Last updated: February 24, 2025
January in Sun Valley, United States, is characterized by chilly temperatures and abundant precipitation. The month grapples with an average temperature of -8°C (17°F), with maximums barely reaching 2°C (36°F) and plunging to a brisk minimum of -27°C (-16°F). With 56 mm (2.2 in) of rain or snow spread over 10 days, the area experiences notable humidity levels, peaking at a brisk 91%. This combination of cold and moisture creates a winter wonderland, perfect for snow enthusiasts and those looking to embrace the beauty of Sun Valley's frosty landscape.
January in Sun Valley, United States, presents a striking winter chill, with temperatures dipping to a minimum of -27°C (-16°F) and an average around -8°C (17°F). The month reaches a maximum of 2°C (36°F), providing a stark contrast to the snow-covered landscapes. As the season progresses into February and March, temperatures gradually rise, with February seeing a slight increase in both minimum and maximum values, while March brings average temperatures up to -3°C (26°F). This upward trend continues into April, where temperatures hover around 0°C (31°F), indicating a transition towards spring. The coldest winter days give way to milder conditions, setting the stage for a vibrant seasonal change as Sun Valley moves from the depths of winter into a refreshing spring thaw.
In January, Sun Valley experiences relatively modest precipitation, with 56 mm (2.2 in) spread over an average of 10 days. This sets the stage for a winter landscape that is both serene and enchanting without being overly drenched. As the month transitions into February, the region sees a significant uptick in moisture, rising to 86 mm (3.4 in) across 13 days, suggesting a more dynamic weather pattern. Interestingly, while March offers a slight reduction in total precipitation to 60 mm (2.4 in) over 12 days, the overall trend for the early year indicates a robust winter season interspersed with milder conditions. This fluctuation hints at the diverse climate that characterizes Sun Valley, allowing for a range of outdoor activities from snow sports to early spring explorations as the winter slowly gives way to spring.
January in Sun Valley experiences a notable humidity level of 91%, setting a trend for the winter months that keeps the air feeling quite damp. This high humidity gradually increases to 92% in February, before a significant drop emerges in March, where it falls to 85%. As spring approaches, the trend continues downward, dropping to 76% in April and reaching a more comfortable 66% in May. The summer months bring even drier air, with humidity plummeting to its lowest at 42% in August, which provides a refreshing respite. As fall sets in, humidity levels begin to rise again, peaking at 87% in December, reminding residents that the moisture-laden atmosphere is a cyclical part of life in Sun Valley. Overall, January's humidity serves as a precursor to the seasonal shifts, illustrating the area's climatic variety throughout the year.
In January, Sun Valley experiences a UV Index of 3, falling into the moderate exposure category with a burn time of around 30 minutes. As winter progresses into February, the UV Index rises slightly to 5, but the potential for UV exposure remains moderate and manageable. However, as spring approaches, the UV Index sees a significant jump, reaching 8 in March and peaking at 9 in April, indicating very high exposure levels where burn time decreases to just 15 minutes. This upward trend continues into the warmer months, with a peak UV Index of 11 in May and July, categorized as extreme, where skin can burn in as little as 10 minutes. Even in late summer, the UV Index remains high, tapering slightly to 9 in September and then down to 6 by October. By the end of the year, both November and December revert to a moderate UV Index of 4 and 3, respectively, bringing back a safer exposure level of 30 minutes. For more detailed and up-to-date UV information, you can visit Sun Valley UV Index.
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In Sun Valley, January marks the beginning of the year with a modest 142 hours of sunshine, setting the stage for a gradual increase in daylight as winter progresses. February brings a noticeable leap to 188 hours, hinting at the approaching spring. By March, the sun shines brighter and longer with 274 hours, revealing a trend of growing sunshine that continues into the spring months. April and May delight residents and visitors alike, boasting 307 and 352 hours of sunshine, respectively, as nature awakens in vibrant colors. The real peak arrives in the heart of summer: June and July bask in 384 and 402 hours of sunshine, creating a perfect backdrop for outdoor adventures. As August transitions to September, the golden days slightly taper off but still deliver 364 and 307 hours of joy, making the region a sun lovers' paradise. The year draws to a close with 264 hours in October and a cozy 178 hours in December, encapsulating the cyclical beauty of Sun Valley's sunlit seasons.
In Sun Valley, United States, January brings a 35% chance of sunny weather, making it one of the cloudier months of the year. While the likelihood of clear skies begins to rise in February with a 40% chance, it's the arrival of spring that truly elevates the sun's presence, peaking at 57% in March and 56% in April. As the seasons transition into summer, the sunny days dramatically increase, reaching an impressive 78% in June. This trend highlights a significant shift in weather patterns, with September enjoying the highest likelihood of sunshine at 82%. Overall, if you're dreaming of basking in the sun, planning your visit for the warmer months will yield the highest reward!
In Sun Valley, United States, the journey through daylight duration in January reveals a gradual transition from the depths of winter into the vibrancy of spring. With 9 hours of daylight, January marks the beginning of a slow ascent, which continues through February and March as the sun lingers a bit longer, reaching 11 hours by the end of March. The pace quickens into spring, soaring to 13 hours in April and peaking at 15 hours in both June and July, summer's zenith. As autumn approaches, daylight begins to wane, descending back to 10 hours in October, and finally returning to 9 hours by November, before closing the year with just 8 hours in December. This cyclical pattern not only dictates the rhythm of life in Sun Valley but also provides a beautiful reminder of nature's ever-changing canvas.
In Sun Valley, January greets residents and visitors with a gentle average wind speed of just 1.7 m/s (4 mph), signaling the calm start to the year. This tranquil breeze sets a cozy tone, but as winter transitions into spring, winds gradually increase, peaking in June at 2.4 m/s (5 mph). After June, the winds moderate slightly, maintaining a consistent 2.0 m/s (4-5 mph) for the remainder of the summer and into early autumn. Interestingly, November dips to a low of 1.8 m/s (4 mph) before December's winds pick up again. Overall, while January may be the calmest month, the data suggests a rising trend in wind speeds as the seasons progress, offering a dynamic backdrop to Sun Valley’s breathtaking scenery.
The weather in Sun Valley 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 Sun Valley and find detailed weather information for every month.
January and February share similar chilling temperatures, with January experiencing a minimum of -27°C (-16°F) and February slightly warmer at a minimum of -22°C (-8°F). Both months have an average temperature around -8°C (17°F in January and 18°F in February), but February boasts a higher maximum temperature of 6°C (42°F) compared to January's 2°C (36°F). Precipitation increases in February, totaling 86 mm (3.4 in) over 13 days, while January records 56 mm (2.2 in) over 10 days. Humidity remains high in both months, with January at 91% and February at 92%. For more details, check out Sun Valley weather in February.
In January, temperatures are notably colder, with a minimum of -27°C (-16°F) and an average of -8°C (17°F), while the maximum reaches only 2°C (36°F). The month experiences significant humidity at 91% and moderate precipitation of 56 mm (2.2 in) over approximately 10 days. In contrast, March brings a slight warming trend, with minimum temperatures around -22°C (-7°F) and an average of -3°C (26°F), peaking at 10°C (50°F). Although March sees a similar amount of precipitation at 60 mm (2.4 in), it occurs across 12 days, and humidity decreases to 85%. For a more detailed look at the weather in this timeframe, check Sun Valley weather in March.
In January, temperatures are significantly colder, with minimums plummeting to -27°C (-16°F) and an average temperature of -8°C (17°F), while the maximum barely reaches 2°C (36°F). The weather is also quite humid, with a humidity level of 91% and around 56 mm of precipitation over 10 days. In contrast, April sees a notable rise in temperatures, with minimums around -16°C (3°F) and an average of 0°C (31°F), peaking at a more pleasant 14°C (57°F). Although precipitation is similar, at 52 mm over 11 days, the humidity drops significantly to 76%, making April generally more comfortable. For more details, check Sun Valley weather in April.
In January, the weather is harsh and frigid, with temperatures plummeting to a minimum of -27°C (-16°F) and averaging around -8°C (17°F), reaching a maximum of just 2°C (36°F). With an average humidity of 91% and 56 mm (2.2 in) of precipitation spread over 10 days, the month feels particularly cold and damp. In stark contrast, May brings a significant warming, with minimum temperatures around -12°C (10°F), an average of 4°C (40°F), and highs peaking at 24°C (75°F). Although precipitation slightly increases to 61 mm (2.4 in) over 13 days, the humidity drops to 66%, resulting in a more pleasant and energizing atmosphere. For more detailed information, check out Sun Valley weather in May.
In January, the weather is starkly frigid, with temperatures plummeting to a minimum of -27°C (-16°F) and averaging around -8°C (17°F). Snow and ice dominate the scene, with an average precipitation of 56 mm (2.2 in) over 10 days, and humidity levels reaching a chilly 91%. In contrast, June brings a significant warming trend, with temperatures rising to a minimum of -4°C (24°F) and an average of 11°C (52°F), peaking at 28°C (82°F). The month sees slightly less precipitation at 46 mm (1.8 in) over 9 days and a drop in humidity to 62%. For more insights on the June weather, you can check out Sun Valley weather in June.
The weather in January and July presents a stark contrast, highlighting the seasonal extremes. In January, temperatures can plummet to a minimum of -27°C (-16°F), with an average of -8°C (17°F) and a maximum of just 2°C (36°F). This winter month also sees considerable precipitation, averaging 56 mm (2.2 in) over approximately 10 days, accompanied by high humidity levels at 91%.
In contrast, July enjoys much milder temperatures, with a minimum of 0°C (32°F), an average of 16°C (62°F), and a maximum reaching 28°C (83°F). Precipitation is significantly lower, at just 15 mm (0.6 in) over 4 days, alongside reduced humidity levels at 53%. For those interested in experiencing the warmth, Sun Valley weather in July offers a refreshing summer escape.
January and August exhibit striking contrasts in weather. In January, temperatures can plummet to a harsh minimum of -27°C (-16°F), with an average of -8°C (17°F) and occasional peaks up to 2°C (36°F). The month is marked by high humidity at 91% and approximately 56 mm (2.2 in) of precipitation over 10 days, creating a frigid and damp environment. In contrast, August sees a more temperate climate, where the minimum temperature is a mild -3°C (27°F) and averages around 15°C (60°F). The month can reach a maximum of 30°C (86°F) with significantly lower humidity at 42%, and it experiences less precipitation, only about 33 mm (1.3 in) over 6 days. For those interested in specifics, additional details about Sun Valley weather in August can provide more insights into the summery conditions.
January and September present starkly contrasting weather conditions. In January, temperatures plummet, with a chilling minimum of -27°C (-16°F) and an average of -8°C (17°F), while the maximum barely reaches 2°C (36°F). The month also sees significant precipitation, with around 56 mm (2.2 in) over about 10 days, accompanied by high humidity at 91%. In contrast, September brings a much milder climate, with temperatures ranging from a minimum of -13°C (10°F) to an average of 10°C (51°F), and a maximum that can soar to 29°C (84°F). With only 30 mm (1.2 in) of precipitation over just 5 days and a lower humidity level of 46%, September is markedly drier and more temperate. For more details on the specific conditions, check out Sun Valley weather in September.
In January, the weather is characterized by frigid temperatures, with a minimum of -27°C (-16°F) and an average of -8°C (17°F), making it one of the coldest months of the year. The precipitation is relatively high at 56 mm (2.2 in) over about 10 days, combined with high humidity levels of 91%, contributing to a chilly and damp atmosphere.
In contrast, October features a much milder climate, with temperatures ranging from a minimum of -24°C (-11°F) to a pleasant maximum of 22°C (71°F). With an average temperature of 2°C (35°F) and lower precipitation at 42 mm (1.6 in) over just 7 days, October offers a more comfortable experience, accompanied by a significantly lower humidity of 64%. For more details on weather specific to this month, you can visit Sun Valley weather in October.
In comparing January and November weather, both months experience frigid temperatures, but January is typically colder overall. January sees average temperatures around -8°C (17°F), with a minimum plunging to -27°C (-16°F), while November's average is slightly milder at -4°C (26°F), with a minimum of -23°C (-10°F). Precipitation is fairly consistent, with January receiving 56 mm (2.2 in) over 10 days compared to November's 46 mm (1.8 in) over 9 days. Additionally, January maintains a higher humidity level at 91%, compared to November's 83%. For more details on November weather, you can visit Sun Valley weather in November.
January and December weather in Sun Valley exhibit some notable differences. January tends to be slightly colder, with average temperatures ranging from a minimum of -27°C (-16°F) to a maximum of 2°C (36°F), compared to December's range of -25°C (-12°F) to 8°C (46°F). Additionally, January has a higher average humidity of 91% versus December's 87%, contributing to a chillier atmosphere. Precipitation remains similar in both months, with January receiving 56 mm (2.2 in) over 10 days, while December records 49 mm (1.9 in) also in 10 days. For more detailed insights on December weather, you can check Sun Valley weather in December.
January in Sun Valley presents a stark contrast to the more temperate months of the year, with its chilly temperatures and notable precipitation. With an average of -8°C (17°F), the cold sets the stage for a picturesque winter landscape, where outdoor enthusiasts flock to enjoy snow-covered adventures. The 56 mm of precipitation over about 10 days enhances the serene beauty, though it also contributes to the winter chill, making January one of the coldest months in this vibrant resort area. Despite the low temperatures and high humidity of 91%, this month offers a unique charm that draws visitors to experience the breathtaking scenery and winter sports. For a deeper dive into the seasonal variations, explore the full details at Sun Valley Climate.