January Weather in Sunriver, United States

Last updated: February 24, 2025

January in Sunriver, United States, presents a chilly yet captivating blend of winter elements. With maximum temperatures reaching a brisk 12°C (53°F) and plunging to a stark -23°C (-9°F), the average temperature hovers around the freezing mark at 0°C (32°F). Residents and visitors can expect 95 mm (3.7 in) of precipitation spread over approximately 13 days, contributing to a sometimes damp and humid atmosphere, with humidity levels at a notable 87%. This dynamic weather creates a unique backdrop for winter activities and highlights the beauty of the snowy landscape in the heart of winter.

January Temperature in Sunriver

In January, Sunriver experiences a chilly embrace, with temperatures ranging from a brisk -23°C (-9°F) to a more manageable 12°C (53°F). The month settles in with an average temperature of 0°C (32°F), marking a transitional phase where winter is firmly established, yet hints of warmth occasionally peek through. This trend of cold nights paired with mild afternoons continues into February, where the minimum dips even further to -24°C (-11°F) before gradually warming as spring approaches. As the months progress towards March, temperatures begin to shift dramatically, showing a steady increase in daytime warmth. By April, the contrast becomes clearer, with average temperatures rising to 5°C (42°F) and maximums reaching a lively 26°C (79°F). Overall, the January chill sets the stage for a gradual thaw, laying the groundwork for the vibrant warmth that follows in later months.

January Weather in Sunriver: Daily Temperature Highs, Lows, and Averages

The chart illustrates January temperature patterns in Sunriver, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends.
JanFebMarAprMayJunJulAugSepOctNovDec313136415058666657443731
Data source: Temperature data for Sunriver generated using information from the Copernicus Climate Change Service.
Choose your preferred temperature unit
The average of daily temperatures (24 hours) calculated across all days in the month.

January Precipitation in Sunriver

In January, Sunriver experiences a substantial precipitation total of 95 mm (3.7 in), spread over approximately 13 days. This marks a noteworthy start to the year, with moisture levels beginning to taper off into February at 114 mm (4.5 in) and then dropping in subsequent months. The trend reveals that as winter progresses into spring, precipitation generally decreases, reaching a low of 10 mm (0.4 in) in the dry summer months of July and August. Interestingly, November sees a resurgence in rainfall, with 79 mm (3.1 in) recorded, indicating a shift back towards wetter conditions as the year winds down. Overall, while January sets a robust foundation for winter precipitation, the fluctuations throughout the year reveal Sunriver's intriguing climatic rhythm.

January Precipitation Trends in Sunriver

The chart displays monthly precipitation patterns in Sunriver, with values for each month alongside January's data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how January's conditions compare to those of other months.
JanFebMarAprMayJunJulAugSepOctNovDec9511574694629101539467991
Data source: Precipitation data for January generated using information from the Copernicus Climate Change Service.
Choose your preferred precipitation unit

January Humidity in Sunriver

In January, Sunriver experiences a notably high humidity level at 87%, a trend that continues into February and March, where humidity remains constant at the same level. As the seasons transition into April, there is a slight dip to 86%, marking the beginning of a gradual decline as warmer months approach. May and June see humidity levels drop to 79% and 80% respectively, while July enjoys the driest conditions of the summer at 77%. As the heat subsides heading into late summer and fall, we witness a further decrease, reaching 60% in August and 57% in September. However, as autumn progresses, the humidity begins to rise again, culminating at 88% in December. This cyclical pattern highlights how Sunriver's humidity is relatively uniform during winter and spring, but fluctuates significantly during the warmer months, creating a dynamic climate throughout the year.

January Average Humidity in Sunriver

This chart illustrates the average monthly humidity levels in Sunriver, with January's data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, allowing you to see how January's humidity levels compare to other months.
JanFebMarAprMayJunJulAugSepOctNovDec87%87%87%86%79%80%77%60%57%76%87%88%
Data source: Humidity data for January generated using information from the Copernicus Climate Change Service.

January UV Index in Sunriver

In January, Sunriver experiences a moderate UV Index of 3, allowing for a safe exposure time of 30 minutes before risking sunburn. As the year progresses into February, the UV Index climbs to 5, maintaining the moderate category but hinting at a trend of increasing solar strength. By March, the situation shifts considerably as the UV Index reaches 7—classified as high—with a reduced safe burn time of 25 minutes. This upward trajectory continues into April, where the index surges to 8, transitioning to the very high category, and the burn time shortens to just 15 minutes. As summer approaches, May and June bring extreme levels, peaking at 11, necessitating a mere 10-minute exposure before sun damage becomes a concern. This pattern of elevated UV persists through July and August before tapering slightly in September with an index of 8. The cycle starts to descend again in the fall, with October seeing a high index of 6, and finally, November and December return to moderate and low levels, respectively, offering longer burn times. By understanding these trends, residents and visitors can better prepare for sun exposure throughout the year. For more detailed information, check out Sunriver UV Index.

Maximum UV Index Levels in Sunriver for January

The chart shows the monthly maximum UV Index (UVI) for Sunriver in January, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues.
JanFebMarAprMayJunJulAugSepOctNovDec3578111110108642
Data source: Sunriver January UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

  •  Extreme (11+): Avoid the sun, stay in shade.
  •  Very High (8-10): Limit sun exposure.
  •  High (6-7): Use SPF 30+ and protective clothing.
  •  Moderate (3-5): Midday shade recommended.
  •  Low (0-2): No protection needed.

January Sunshine in Sunriver

January in Sunriver, United States, may start with a modest 113 hours of sunshine, but as the year progresses, the days grow longer and brighter. By February, the sun graces the area for 155 hours, heralding the arrival of spring with an increase in warmth and light. The upward trend continues, peaking in the summer months, where July boasts an impressive 409 hours of sunshine, perfect for outdoor adventures and relaxation. As autumn approaches, the hours gradually decline, settling to 246 hours in October. Although the days shorten in November and December, with 175 and 150 hours, respectively, the sunshine experienced throughout the year nurtures Sunriver's vibrant landscapes and inviting atmosphere, making it a delightful retreat for visitors year-round.

Monthly Sunshine Duration in Sunriver: January Highlighted

The January sunshine duration represents the total number of hours Sunriver experiences direct sunlight during the month of January, excluding cloudy or obstructed periods. This chart compares the sunshine duration of January with the other months of the year.
JanFebMarAprMayJunJulAugSepOctNovDec113h155h244h268h340h368h409h367h299h246h175h150h
Data source: Sunriver January Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Sunriver During January

In Sunriver, January typically brings a meager 20% chance of sunny weather, marking the beginning of the year with predominantly cloudy and overcast skies. This trend of low sunshine continues into February, where the likelihood increases slightly to 24%. As we transition into the spring months, the probability of sunny days sharply rises, jumping to nearly 46% in March and peaking at 60% in April. This clear upward trajectory signals the onset of sunnier days ahead, with May and June witnessing robust sunshine levels of 46% and 65%, respectively. As summer approaches, the chances of basking in the sun soar, making the warmer months an ideal time to enjoy outdoor activities in this picturesque location.

Percentage of Sunny Days in January in Sunriver

The chart illustrates the percentage of sunny days in Sunriver throughout the year, with January highlighted. It highlights the variation in sunshine across each month and provides an overview of the typical frequency of sunny days, offering insights into how often Sunriver experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec20%24%46%60%46%65%82%75%70%35%24%15%
Data source: Sunriver January chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Sunriver in January

In Sunriver, United States, January ushers in 9 hours of daylight, setting the stage for longer, brighter days ahead as winter gives way to spring. As February rolls in, daylight extends to 10 hours, gradually hinting at the increasing warmth. This upward trend continues into March with 11 hours, and by April, residents can enjoy a vibrant 13 hours of sun, igniting the spirit of renewal. May and June peak at 14 and 15 hours, respectively, showcasing summer’s full embrace. However, as July and August arrive, daylight levels remain steady at 15 hours, before gradually tapering off in September's 12 hours. The decline continues as October offers 10 hours, leading into November and December, where daylight returns to 9 and later 8 hours. This cyclical rhythm highlights the natural ebb and flow of daylight throughout the year, enhancing Sunriver's charm across the seasons.

Average Daylight Hours in Sunriver for January

The chart illustrates the variation in daylight duration in Sunriver throughout the year, with January highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec9h 19m10h 29m11h 58m13h 28m14h 45m15h 23m15h 2m13h 53m12h 26m10h 56m9h 37m8h 56m
Data source: Sunriver daylight hours, calculated by summing the hours between sunrise and sunset for each day.

January Winds in Sunriver

In Sunriver, United States, January ushers in a gentle breeze with an average wind speed of 3.2 m/s (7 mph), setting the tone for the winter months. Notably, February experiences a slight uptick to 3.5 m/s (8 mph), while March and April see a calming shift, both settling at 2.8 m/s (6 mph). As spring transitions into summer, wind speeds gradually decrease, hitting a seasonal low of 2.0 m/s (4 mph) in July. This trend of dwindling winds continues into August and September, where speeds hover around 2.2 m/s (5 mph). However, come October, the winds pick up again to average 2.9 m/s (7 mph), and November sees a return to the January levels. December’s average winds pick up slightly to 3.4 m/s (8 mph), closing the year with a brisk reminder of the January winds to come. Overall, Sunriver's wind patterns reveal a dynamic interplay between the seasons, characterized by calmness in summer and activity in winter.

Average January Wind Speed in Sunriver

The chart displays monthly wind speed patterns in Sunriver, with values for each month shown alongside January's data, which is highlighted for easy comparison. It illustrates the average wind speed, offering insights into how January's wind conditions compare to the rest of the year.
JanFebMarAprMayJunJulAugSepOctNovDec3.2 m/s3.52.82.82.52.42.02.22.22.93.23.4
Data source: Sunriver January wind data, generated using information from the Copernicus Climate Change Service.

How January Weather in Sunriver Compares to Other Months

The weather in Sunriver changes throughout the year, offering a unique experience in each season. Below is a month-by-month comparison of January's weather with other months, highlighting differences in temperature, precipitation, and other key factors. Click on each section to discover seasonal trends in Sunriver and find detailed weather information for every month.

January and February showcase distinct yet similar winter weather patterns. In January, temperatures range from a chilly minimum of -23°C (-9°F) to a maximum of 12°C (53°F), with an average temperature hovering around 0°C (32°F). The month experiences 95 mm (3.7 in) of precipitation over 13 days, all while maintaining a high humidity level of 87%. February, on the other hand, sees slightly colder minimum temperatures at -24°C (-11°F) and a marginally higher maximum of 16°C (61°F), with an average of -1°C (31°F). Precipitation also increases to 114 mm (4.5 in) across 16 days, but humidity remains constant at 87%. For more detailed insights into February's climate, you can visit Sunriver weather in February.

In January, the weather is significantly colder, with temperatures ranging from a frigid -23°C (-9°F) to a maximum of 12°C (53°F) and an average of 0°C (32°F). This month also sees considerable precipitation, accumulating to 95 mm (3.7 in) over 13 days, while the humidity remains high at 87%. In contrast, March offers a more temperate climate, boasting higher average temperatures of 2°C (36°F) and maximums reaching 18°C (65°F). Precipitation decreases to 74 mm (2.9 in) over 14 days, but humidity levels remain constant at 87%. For a detailed look at weather conditions in March, you can check Sunriver weather in March.

In January, temperatures can plunge to a brisk minimum of -23°C (-9°F), with an average hovering around 0°C (32°F) and a maximum of 12°C (53°F). This frigid month also brings substantial precipitation, totaling 95 mm (3.7 in) over about 13 days, alongside high humidity levels at 87%. In contrast, April experiences a notable warming trend, with temperatures ranging from a minimum of -11°C (12°F) to an average of 5°C (42°F) and peaking at a pleasant 26°C (79°F). Precipitation decreases to 69 mm (2.7 in) over 11 days, maintaining a similar humidity at 86%. This shift from winter to spring allows for a more comfortable and varied climate. For more insights on the pleasant April weather, check out Sunriver weather in April.

In January, the weather can be quite severe, with temperatures plummeting as low as -23°C (-9°F) and averaging around 0°C (32°F). This month sees frequent precipitation, totaling 95 mm (3.7 in) over about 13 days, contributing to a high humidity level of 87%. In stark contrast, May typically brings more temperate conditions, where temperatures range from a minimum of -5°C (24°F) to an average of 10°C (50°F) and can peak at 30°C (86°F). Precipitation is significantly lower at 46 mm (1.8 in) over 10 days and with a reduced humidity of 79%, May offers a much more pleasant climate. For more detailed insights, check out Sunriver weather in May.

In January, the weather is characterized by frigid temperatures, with lows dropping to -23°C (-9°F) and an average around 0°C (32°F), making it a chilly month. Precipitation is relatively high at 95 mm (3.7 in) over 13 days, and humidity remains elevated at 87%. In contrast, June brings a significant warming trend, with temperatures ranging from a minimum of -2°C (29°F) to a maximum of 40°C (104°F) and an average of 15°C (58°F). The month sees much less precipitation, only 29 mm (1.2 in) across 7 days, and slightly lower humidity at 80%. For a more detailed look at what to expect, you can check out Sunriver weather in June.

January and July present a striking contrast in weather. In January, temperatures can plummet as low as -23°C (-9°F), with an average of 0°C (32°F) and a maximum of 12°C (53°F). This cold month also experiences significant precipitation, averaging 95 mm (3.7 in) over 13 days, coupled with high humidity levels at 87%. In stark contrast, July boasts much milder conditions, with minimum temperatures around 0°C (32°F), an average of 19°C (67°F), and highs reaching up to 35°C (95°F). Precipitation in July is scarce at just 10 mm (0.4 in) over only 2 days, and humidity decreases to a more comfortable 77%. For those interested in more information about this summer month, here's a helpful reference: Sunriver weather in July.

January and August showcase stark contrasts in weather patterns. In January, temperatures plunge to a minimum of -23°C (-9°F) and average around 0°C (32°F), while reaching a maximum of 12°C (53°F). This month is characterized by high humidity at 87% and considerable precipitation, with 95 mm (3.7 in) of rain over 13 days. In contrast, August experiences a much milder climate, with temperatures ranging from a minimum of 0°C (32°F) to a maximum of 36°C (98°F) and an average of 19°C (66°F). The month is considerably drier, receiving only 15 mm (0.6 in) of precipitation over just 4 days and boasting a lower humidity level of 60%. For more detailed insights, check out Sunriver weather in August.

January and September present stark contrasts in weather conditions. While January endures frigid temperatures, ranging from a minimum of -23°C (-9°F) to an average of 0°C (32°F), September boasts much milder temperatures, with lows of -3°C (26°F) and an average of 14°C (57°F). The winter month experiences considerable precipitation, totaling 95 mm (3.7 in) over 13 days, accompanied by high humidity levels at 87%. In comparison, September enjoys a drier climate with only 39 mm (1.5 in) of precipitation spread over just 5 days and significantly lower humidity at 57%. For detailed insights on September's weather, you can explore Sunriver weather in September.

January and October exhibit strikingly different weather patterns. In January, temperatures are notably colder, ranging from a minimum of -23°C (-9°F) to a maximum of 12°C (53°F), with an average around freezing at 0°C (32°F). The month is also quite humid, with 87% humidity and precipitation of 95 mm (3.7 in) over 13 days. In contrast, October features a milder climate, with temperatures ranging from a minimum of -10°C (14°F) to a pleasant maximum of 29°C (84°F), averaging 7°C (45°F). Precipitation is reduced to 46 mm (1.8 in) over just 6 days, and the humidity drops to 76%. For more details, you can check Sunriver weather in October.

January and November exhibit distinct weather characteristics, marking a transition from the cold depths of winter to the milder late fall. In January, temperatures range from a chilly minimum of -23°C (-9°F) to a maximum of 12°C (53°F), with an average temperature of around 0°C (32°F). Precipitation is relatively high during this month, with 95 mm (3.7 in) falling over 13 days, accompanied by a high humidity level of 87%.

In contrast, November offers a wider temperature variation, with lows of -17°C (1°F) and highs reaching up to 21°C (70°F), resulting in a more comfortable average of 3°C (37°F). While precipitation is slightly lower at 79 mm (3.1 in), it occurs on fewer days, totaling 11. Despite both months exhibiting the same humidity level of 87%, November’s mild temperatures provide a more temperate experience compared to the harsh cold of January. For more detailed insights about the weather, check out Sunriver weather in November.

January and December in Sunriver feature similar average temperatures, both hovering around 0°C (32°F). However, January tends to be colder overall, with minimum temperatures dipping to -23°C (-9°F), compared to December's milder minimum of -17°C (2°F). Precipitation levels are slightly higher in January at 95 mm (3.7 in) over 13 days, compared to December's 91 mm (3.6 in) across 14 days. Humidity remains relatively constant, with January at 87% and December at 88%. For more detailed weather insights, check out Sunriver weather in December.

Compare Sunriver's Climate with Cities Worldwide

Conclusion: What to Expect From January Weather in Sunriver

In January, Sunriver experiences a significant chill compared to the milder months of the year. With average temperatures hovering around 0°C (32°F) and occasional extremes dipping as low as -23°C (-9°F), this month stands out as one of the coldest. Occasional precipitation, totaling about 95 mm (3.7 in) over 13 days, adds to the wintery ambiance, with humidity levels remaining high at 87%. This unique combination of cold temperatures and dampness paints a contrasting picture to the warmer, sunnier days of late spring and summer. For more detailed insights and comparisons to other months, explore Sunriver Climate.