Last updated: February 24, 2025
January in Rainier, United States, is characterized by a cool and damp climate, with temperatures fluctuating between a maximum of 14°C (57°F) and a minimum of -6°C (22°F), averaging around 5°C (42°F). Rainfall is significant, with 185 mm (7.3 in) of precipitation spread over 17 days, contributing to a notably high humidity level of 86%. This period showcases the quintessential winter atmosphere of the region, making it a unique yet challenging time for both residents and visitors.
In Rainier, United States, January temperatures set the stage for a chilly winter, with minimums dipping as low as -6°C (22°F) and an average hovering around 5°C (42°F). As the month progresses, daily highs can reach up to 14°C (57°F), providing brief but welcome warmth during the cold spell. This January chill is part of a broader trend observed in the early months of the year, where temperatures gradually rise into February, echoing a similar pattern that leads into the heart of spring. The transition is palpable; from January’s stark cold, we see a slow but steady increase in both average and maximum temperatures, paving the way for the balmy days of March and April. Overall, January serves as a pivotal month that heralds the change from winter's grip toward the gentle warmth of springtime.
January in Rainier, United States, brings a substantial average precipitation of 185 mm (7.3 in), making it one of the wettest months of the year alongside December and November. With 17 rainy days, January sets the tone for a winter drenched in moisture, significantly higher than the lighter downpours seen in the warmer months. As the year progresses, precipitation levels gradually decline, notably dropping to just 10 mm (0.4 in) in July, indicating a clear seasonal shift. Interestingly, January's rainfall contributes to a robust early-year total, which is vital for local ecosystems and water reserves, while the transition into the drier summer months marks a period of respite from the persistent winter rains.
In January, Rainier experiences a notably high humidity level of 86%, setting the tone for a generally moist winter season. This trend continues into February and November, where humidity remains elevated at 84% and 86%, respectively. As spring approaches, March and April show a slight decrease to 85% and 83%, suggesting a gradual shift towards drier conditions. Moving into the summer months, July and August bring about significant relief, with humidity dropping to 82% and a comfortable 73%. This marks a distinct contrast to the wetter periods of late fall and winter. As the year closes, humidity rises again in December to a high of 87%, indicating that Rainier retains its characteristic dampness throughout the year, with a notable seasonal swing as humidity peaks during the colder months.
In January, Rainier experiences a low UV Index of 2, with a recommended burn time of 45 minutes, making it a relatively safe month for outdoor activities. As winter transitions to spring, the UV Index gradually rises, moving to 3 in February and 5 in March, indicating a moderate risk where shorter exposure times become necessary. By April, the UV Index escalates to 6, entering the high exposure category, with burn times dropping to 25 minutes. This upward trend continues through the late spring and summer months, peaking at a very high UV Index of 9 in both June and July, where protection from the sun becomes crucial, allowing only 15 minutes of exposure. As fall approaches, a slight decline is observed, with the Index falling back to 5 in October and further decreasing to 3 in November. Finally, December sees the UV Index dip to 1, providing a reprieve with a burn time of 45 minutes once more. Overall, the gradual increase in UV exposure from winter to summer underscores the importance of sun safety. For more detailed information, visit Rainier UV Index.
UV Risk Categories
In January, Rainier, United States experiences a modest 81 hours of sunshine, setting the stage for a gradual increase as the year unfolds. By February, sunlight significantly rises to 122 hours, hinting at the approaching warmth of spring. As the days lengthen, March sees a substantial jump to 202 hours, and by April, sunshine flourishes at 227 hours. This upward trend continues into May and June, where residents bask in 299 and 312 hours respectively. The peak arrives in July, with an impressive 364 hours, marking the sunniest month of the year. However, as summer transitions to fall, the hours begin to wane, with August and September witnessing 331 and 254 hours of sunshine. By the end of the year, November and December bring a dip, wrapping up with 116 and 93 hours of light. This cycle of sunshine illustrates the comforting rhythm of seasons in Rainier, offering a reminder that brighter days are always on the horizon.
In Rainier, January ushers in a notably gloomy start to the year, with only a 13% chance of sunny weather. This trend of subdued sunshine carries through to February, which sees a modest uptick to 20%. As the seasons change, the likelihood of sun gradually increases, climbing to 31% in March and reaching a promising 48% by April. The true transition into sunnier days is evident in the summer months, where July boasts a 62% chance of sunshine, followed by a still favorable 50% in August. Overall, as winter wanes, Rainier residents can look forward to a brighter, warmer landscape, with sun-soaked days becoming increasingly frequent by mid-year.
In January, daylight in Rainier, United States, is limited to a modest 8 hours, setting the tone for winter's early darkness. However, as the calendar turns to February, the sunlight begins to increase, offering 10 hours of daylight and hinting at the approaching spring. The trend continues in March with 11 hours, and by April, residents can bask in a generous 13 hours. May ushers in even longer days, reaching 15 hours, a peak that remains steady through June and July, allowing ample time for outdoor activities under the sun. As summer wanes in August, daylight begins to recede slightly, settling at 14 hours before tapering down through September and October. The descent continues into late autumn, with November offering just 9 hours, and finally returning to the 8 hours of daylight by December, completing the cycle and preparing Rainier for the winter's embrace once more.
In January, the winds in Rainier, United States, maintain a gentle pace, averaging 2.7 m/s (6 mph), setting a tranquil tone for the month. As winter transitions to spring, February sees a slight uptick in wind speed to 3.4 m/s (7 mph), hinting at the impending season change. However, by March, the wind calms down again, settling back to 2.6 m/s (6 mph), and this lull continues into April and May. Notably, the summer months bring even quieter breezes, with speeds dropping to 2.3 m/s (5 mph) in July, suggesting a serene atmosphere perfect for outdoor activities. As the year progresses, however, a gradual increase takes place, culminating in December when winds pick up again, reaching 3.3 m/s (7 mph). Overall, the annual wind patterns reflect a gentle rhythm, moving from the briskness of winter to the stillness of summer, before revving up again as the year draws to a close.
The weather in Rainier 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 Rainier and find detailed weather information for every month.
In comparison between January and February, both months exhibit similar temperature ranges, with January showcasing a minimum of -6°C (22°F) and a maximum of 14°C (57°F), while February remains slightly warmer, with a minimum of -5°C (24°F) and a maximum of 14°C (58°F). Precipitation levels are also comparable, with January receiving 185 mm (7.3 in) over 17 days, slightly higher than February’s 163 mm (6.4 in) across the same number of days. Additionally, humidity levels in January are marginally higher at 86%, compared to February’s 84%. Thus, while both months endure chilly weather, February tends to be slightly drier and warmer. For more insights on February conditions, check out Rainier weather in February.
In January, the weather is quite cold, with average temperatures ranging from a min of -6°C (22°F) to a max of 14°C (57°F). The month experiences significant precipitation, totaling 185 mm (7.3 in) over 17 days, contributing to a high humidity level of 86%. In contrast, March brings a noticeable increase in temperatures, with averages from -1°C (31°F) to 23°C (73°F). While precipitation is also frequent in March, totaling 131 mm (5.2 in) over the same number of days, the humidity remains slightly lower at 85%. For more detailed insights about March weather, you can check the following link: Rainier weather in March.
In January, the weather is characterized by colder temperatures, with a minimum of -6°C (22°F) and an average of 5°C (42°F), reaching a maximum of 14°C (57°F). Precipitation is quite frequent during this month, totaling 185 mm (7.3 in) over 17 days, and humidity is relatively high at 86%.
In contrast, April brings milder conditions, with temperatures ranging from a minimum of -1°C (31°F) to an average of 10°C (50°F), and peaking at 24°C (75°F). The month experiences less precipitation, with 116 mm (4.6 in) spread over 15 days, and humidity decreases slightly to 83%. For more details about the weather in April, check out Rainier weather in April.
January and May present strikingly different weather conditions. In January, temperatures can dip as low as -6°C (22°F) and struggle to reach an average of just 5°C (42°F), while May basks in a warmer climate with temperatures ranging from a minimum of 5°C (41°F) to a maximum of 30°C (86°F) and an average of 13°C (56°F). Precipitation also varies significantly; January sees 185 mm (7.3 in) of rain over 17 days, contrasting sharply with May's 62 mm (2.5 in) over just 11 days. Humidity levels are slightly lower in May at 84% compared to January's 86%, making the early summer months feel more pleasant. For more details on the weather during this time, check out Rainier weather in May.
January and June present strikingly contrasting weather conditions. In January, temperatures range from a chilly -6°C (22°F) to a mild 14°C (57°F), with an average of 5°C (42°F). This month is characterized by significant precipitation, with 185 mm (7.3 in) falling over 17 days and a high humidity of 86%. In stark contrast, June boasts a much warmer climate, with temperatures varying from a minimum of 7°C (45°F) to a scorching maximum of 38°C (101°F), and an average of 16°C (61°F). Rainfall is considerably less frequent, totaling just 52 mm (2.1 in) over 8 days, and humidity remains relatively stable at 84%. For further insights on summer conditions, you can explore Rainier weather in June.
January and July present a stark contrast in weather conditions. In January, temperatures can drop to a chilling minimum of -6°C (22°F) and average around 5°C (42°F), with a maximum of 14°C (57°F). The month is characterized by high precipitation levels, totaling 185 mm (7.3 in) over approximately 17 days, coupled with high humidity at 86%. In contrast, July brings much warmer temperatures, with a minimum of 10°C (50°F), an average of 19°C (66°F), and a maximum reaching up to 33°C (91°F). Precipitation is significantly lower in July, totaling just 10 mm (0.4 in) across only 2 days, and the humidity remains relatively comfortable at 82%. For more detailed insights, check out Rainier weather in July.
January weather presents a stark contrast to that of August. In January, temperatures can dip as low as -6°C (22°F), with an average of 5°C (42°F) and highs reaching only 14°C (57°F). The month is characterized by considerable rainfall, totaling 185 mm (7.3 in) over about 17 days, accompanied by high humidity levels averaging 86%. In comparison, August boasts much milder temperatures, with lows around 10°C (50°F), an average of 19°C (66°F), and maximums soaring to 34°C (94°F). Rain is rare in August, with only 13 mm (0.5 in) of precipitation over just 3 days, and humidity levels are significantly lower at 73%. For more insights into August conditions, check out Rainier weather in August.
In January, the weather is quite chilly, with temperatures ranging from a minimum of -6°C (22°F) to a maximum of 14°C (57°F) and an average of 5°C (42°F). The month sees significant precipitation, totaling 185 mm (7.3 in), and the humidity remains high at 86%, making it feel even colder. In contrast, September offers much milder temperatures, with a minimum of 6°C (43°F) and a maximum of 30°C (87°F), averaging 16°C (62°F). Precipitation is also lower in September, at 85 mm (3.4 in) over about 10 days, and humidity decreases to 74%, resulting in a more comfortable and pleasant atmosphere. For more details, you can check Rainier weather in September.
January and October present a noticeable contrast in weather patterns. In January, temperatures can drop to as low as -6°C (22°F), with an average of 5°C (42°F) and highs reaching 14°C (57°F). This month also sees a significant amount of precipitation, averaging 185 mm (7.3 in) over 17 days, coupled with high humidity levels at 86%. In contrast, October is milder, with minimum temperatures around 1°C (34°F), an average of 11°C (52°F), and maximums of 24°C (75°F). Precipitation decreases to an average of 134 mm (5.3 in) across 13 days, while humidity levels remain slightly lower at 83%. For a detailed look at conditions during this month, you can explore Rainier weather in October.
January and November exhibit notable differences in temperature while sharing similar humidity and precipitation patterns. In January, the average temperature hovers around 5°C (42°F) with a minimum dropping to -6°C (22°F), while November is milder, with average temperatures around 8°C (46°F) and a minimum of 0°C (32°F). Precipitation levels are nearly comparable, with January seeing 185 mm (7.3 in) and November slightly lower at 182 mm (7.2 in), both typically spread over 17 days. The consistent humidity of 86% in both months adds to the overall damp feel, characteristic of this region. For a glimpse into the conditions of November, you can check Rainier weather in November.
January and December share similar temperature ranges, with both months experiencing minimums of -6°C (22°F) and average highs around 5°C (42°F). However, January tends to be slightly warmer than December, with a maximum temperature of 14°C (57°F) compared to December's 13°C (56°F). Precipitation is slightly lower in January at 185 mm (7.3 in) over 17 days, while December sees 199 mm (7.8 in) over 18 days, indicating a marginally wetter month. Humidity levels are also close, with January at 86% and December at 87%. For a deeper look at December weather, check out Rainier weather in December.
As January blankets Rainier with its chill, the weather contrasts sharply with the milder months that bookend it. With a maximum temperature peaking at a cool 14°C and a damp average of 5°C, this month embraces its winter persona, delivering substantial precipitation over 17 days. The high humidity levels of 86% further contribute to the chilly atmosphere, making it feel even colder. While other months may usher in warmth and sunshine, January serves as a reminder of winter's grip, creating an enchanting yet stark landscape typical of the season. For a deeper dive into how January stacks up against the rest of the year, check out Rainier Climate.