Last updated: February 24, 2025
December in Coulee Dam, United States showcases a chilly landscape where the maximum temperature reaches a brisk 16°C (60°F) and the average temperature hovers around a biting -2°C (29°F). Residents and visitors brace for minimum temperatures plunging to an icy -19°C (-2°F). The month sees 57 mm (2.2 in) of precipitation spread across 11 days, creating a damp atmosphere with a high humidity level of 86%. This combination of cold and moisture contributes to the unique winter conditions that define December in this picturesque region.
In December, Coulee Dam experiences a stark chill as temperatures plummet, with minimums dipping to -19°C (-2°F). The month stands out with an average temperature of -2°C (29°F), marking a steady progression into the winter months. While the maximum temperature can reach a relatively mild 16°C (60°F), it contrasts sharply with the frigid lows, illustrating the region's significant temperature swings. This month acts as a prelude to the colder depths of winter, further highlighted by notably lower averages compared to the preceding months of November and October. Overall, December captures the essence of winter in Coulee Dam, merging icy averages with occasional milder bursts, inviting both the beauty and challenges of the season.
In Coulee Dam, December brings a notable dip in temperatures along with a modest yet consistent precipitation pattern, recording 57 mm (2.2 in) over the month. This aligns with the generally wet winter months, as December shares the spotlight with November, both featuring 11 days of rainfall. Interestingly, while early winter tends to see higher precipitation, the amount in December is slightly lower than January's 67 mm but maintains an overall trend of increasing moisture as the year draws to a close. This sustained rainfall supports the region's transition from the dry summer months, heralding the onset of colder, wetter weather. As 2023 ends, Coulee Dam enjoys a robust December, blending the chill of winter with essential seasonal rainfall.
In December, Coulee Dam experiences a notable humidity level of 86%, maintaining a trend evident from previous months. As the year closes, humidity levels rebound slightly from November's 87%, showcasing a pattern of elevated moisture that characterizes the winter months. This increase from the drier summer months, where humidity dipped to a low of 62% in August, highlights the significant seasonal shift in Coulee Dam's atmospheric conditions. The humidity consistently remains high from late fall through early spring, indicating the region's propensity for moist air, which may provide a cozy, albeit chilly, ambiance as the year draws to a close.
In December, Coulee Dam experiences a low UV Index of 2, indicating minimal sun exposure risks with a burn time of 45 minutes. This trend marks a return to safer levels after the high peaks in the summer months, where the UV Index soared to 9 in June, July, and August. As winter settles in, sunlight becomes less intense, allowing for longer periods outdoors without significant sunburn risk. This seasonal fluctuation highlights the importance of awareness regarding UV exposure throughout the year. For more detailed information on UV levels, check out Coulee Dam UV Index.
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In Coulee Dam, December greets residents with a gentle retreat from the vibrant sunshine of summer, offering a modest 121 hours of sunlight. This marks a sharp decline from the sun-drenched peak of 418 hours in July, encapsulating the essence of winter’s shorter days. As the months progress, a discernible trend emerges: the year begins with a humble 98 hours in January, gradually climbing to a sunny crescendo in June and July. However, as autumn sets in, sunlight hours dwindle, leading to December's subdued glow. This cyclical pattern highlights the stark contrast between the abundant brightness of summer and the tranquility of the colder months, inviting reflection and warmth amid the winter chill.
In Coulee Dam, December brings a cooling reprieve as daylight shortens, and the chance of sunny weather hovers at a modest 25%. This figure is consistent with the previous month, November, which also sees limited sunshine. Observing a broader trend, it's notable that sunny days begin to increase significantly from late winter; for instance, March offers 44%, and this climbs to a robust 88% by the height of summer in July. The gradual ascent in sunshine from early spring to summer highlights a distinct climatic transition, making December one of the less favorable months for sun enthusiasts in this region.
As December rolls into Coulee Dam, the days retreat to their shortest span, offering just 8 hours of daylight. This shift marks a continuation of the gradual decline from the brisk 15 hours seen in the peak of summer. Following a steady decrease from the bright days of May and June, which both offered ample sunlight, December's daylight mirrors January’s, signaling the onset of winter and a time for cozy indoor gatherings. As the year progresses from the vibrant long days of spring and summer, to the shorter, quieter days of fall and winter, the rhythm of daylight illuminates life's seasonal transitions, inviting reflection on the year gone by and the longer days yet to come.
In Coulee Dam, the December winds settle into a gentle rhythm, echoing the tranquil patterns seen throughout the year. With an average wind speed of 2.3 m/s (5 mph), December mirrors the lighter breezes of previous late autumn months, showing a consistent trend of mild wind conditions from mid-fall to winter. The data reveals that while each month bookends with slightly varied gusts, the overall average remains steady, hinting at the area's calm climatic characteristics. This continuity in wind speed invites residents and visitors alike to appreciate the serene, breezy days that December brings, wrapping up the year in a soft, soothing manner.
The weather in Coulee Dam changes throughout the year, offering a unique experience in each season. Below is a month-by-month comparison of December's weather with other months, highlighting differences in temperature, precipitation, and other key factors. Click on each section to discover seasonal trends in Coulee Dam and find detailed weather information for every month.
December and January present a notable shift in weather patterns. In December, temperatures range from a minimum of -19°C (-2°F) to a maximum of 16°C (60°F), with an average temperature of -2°C (29°F) and 57 mm of precipitation over 11 days, while humidity remains high at 86%. In contrast, January sees a drop in minimum temperatures to -24°C (-11°F) with a lower maximum of 9°C (49°F). The average temperature stays around -2°C (28°F), and precipitation increases slightly to 67 mm over the same number of wet days, keeping humidity steady at 85%. For more details on January weather, you can visit Coulee Dam weather in January.
December and February exhibit similar average temperatures, with December ranging from a minimum of -19°C (-2°F) to a maximum of 16°C (60°F), while February's temperatures peak at 11°C (53°F) and dip to a minimum of -15°C (4°F). Precipitation is slightly higher in December, totaling 57 mm (2.2 in) over 11 days, compared to February's 47 mm (1.9 in) over 9 days. Notably, both months maintain a consistent humidity level of 86%, contributing to a chilly and damp atmosphere. For a more detailed overview of February’s conditions, you can check out Coulee Dam weather in February.
In December, temperatures range from a frigid minimum of -19°C (-2°F) to a maximum of 16°C (60°F), with an average temperature of -2°C (29°F), while March sees slightly milder conditions with a minimum of -18°C (0°F) and a maximum of 18°C (65°F) and an average temperature rising to 4°C (39°F). Precipitation is somewhat higher in December at 57 mm (2.2 in) over 11 days compared to March's 46 mm (1.8 in) over 8 days, suggesting that while both months experience significant snowfall or rain, December tends to be wetter. Humidity levels remain consistent at 86% for both months, reflecting the damp chill typical of winter. For a closer look at the specifics of March weather, check out Coulee Dam weather in March.
December weather is characterized by significantly colder temperatures, with minimums plunging to -19°C (-2°F) and an average around -2°C (29°F). In contrast, April sees a noticeable warming trend, where even the minimum temperatures are more moderate at -4°C (26°F), and the average climbs to a more comfortable 9°C (48°F). While December experiences more persistent precipitation over 11 days, accumulating 57 mm (2.2 in), April offers a milder average of 39 mm (1.6 in) across just 7 days. Humidity levels are relatively high in both months, but December slightly edges out with 86% compared to April's 82%. For more details about the weather specifics in April, you can check Coulee Dam weather in April.
December and May present stark contrasts in weather conditions. December typically experiences colder temperatures, with average highs around -2°C (29°F) and occasional dips to as low as -19°C (-2°F), while May warms up significantly, showcasing average temperatures around 15°C (59°F) and highs reaching up to 31°C (89°F). Precipitation in December is more frequent, occurring over 11 days with a total of 57 mm (2.2 in), compared to May's 37 mm (1.4 in) over just 7 days. Humidity levels also differ, with December averaging 86%, creating a damp chill, whereas May's humidity at 77% feels more comfortable. For a closer look at May weather specifics, check out Coulee Dam weather in May.
When comparing the weather in December and June, the differences are striking. December experiences much colder temperatures with a minimum of -19°C (−2°F) and an average of -2°C (29°F), while June sees much milder conditions with a minimum of 6°C (43°F) and an average of 20°C (68°F). Precipitation is more frequent in December, with 57 mm (2.2 in) falling over 11 days, compared to just 13 mm (0.5 in) over 4 days in June. Additionally, December has a higher humidity level at 86%, while humidity in June is lower at 79%. For more detailed information, you can check Coulee Dam weather in June.
December and July present starkly contrasting weather conditions. In December, temperatures can plunge as low as -19°C (-2°F), with an average of -2°C (29°F) and occasional highs reaching 16°C (60°F). The month is characterized by high humidity at 86% and considerable precipitation, averaging 57 mm (2.2 in) over about 11 days. In contrast, July boasts a much warmer climate, with minimum temperatures around 11°C (51°F) and averages soaring to 24°C (75°F), peaking at a sweltering 41°C (107°F). July is also significantly drier, receiving only 4 mm (0.1 in) of rain over just one day, coupled with lower humidity levels at 77%. For more specific details on the warm July weather, you can check the information here: Coulee Dam weather in July.
December and August present strikingly different weather conditions. In December, temperatures drop significantly, with a minimum of -19°C (−2°F) and an average of -2°C (29°F), while precipitation occurs on 11 days, resulting in a damp and chilly atmosphere with high humidity at 86%. Conversely, August boasts a much warmer climate, featuring a minimum temperature of 8°C (46°F) and an average of 23°C (74°F), with the mercury sometimes reaching as high as 39°C (102°F). It remains largely dry during this month, with only 8 mm (0.3 in) of precipitation falling over just 2 days and humidity levels at a more comfortable 62%. For more details on the weather during this summer month, visit Coulee Dam weather in August.
When comparing the weather in December and September, it is evident that these two months present strikingly different conditions. December features much colder temperatures, with a minimum of -19°C (-2°F) and an average around -2°C (29°F), while September enjoys milder weather with a minimum of 2°C (36°F) and an average of 17°C (62°F). Precipitation is more frequent in December, occurring on 11 days with a total of 57 mm (2.2 in), compared to just 3 days of rain totaling 24 mm (1.0 in) in September. Additionally, December's higher humidity at 86% contrasts with September's more comfortable 60%, highlighting the more contrasting and harsher climate experienced in winter. For more detailed information about September weather, you can visit Coulee Dam weather in September.
Comparing the weather in December and October reveals notable differences. In December, temperatures can plummet to a minimum of -19°C (-2°F), with an average of -2°C (29°F) and a maximum reaching 16°C (60°F). The month sees more precipitation, totaling 57 mm (2.2 in) over approximately 11 days, with humidity levels high at 86%. In contrast, October offers milder conditions, featuring a minimum temperature of -7°C (20°F), an average of 8°C (48°F), and a maximum of 26°C (78°F). The precipitation is slightly less at 42 mm (1.7 in) over 7 days, and humidity is lower at 80%. For more details about the conditions, check out Coulee Dam weather in October.
December weather exhibits a more significant chill compared to November, with average temperatures dropping from 3°C (37°F) in November to -2°C (29°F) in December. The minimum temperatures also reflect this shift, plunging from -9°C (16°F) in November to a frosty -19°C (-2°F) in December. Both months experience similar maximum temperatures, peaking at 16°C (60°F). Additionally, while December sees slightly more precipitation at 57 mm (2.2 in) compared to 51 mm (2.0 in) in November, both months have the same number of rainy days, at 11. Humidity levels remain relatively consistent, with December at 86% and November at 87%. For a closer look at November’s climate, check out Coulee Dam weather in November.
December weather in Coulee Dam brings a distinct chill, contrasting sharply with the milder months that precede it. With average temperatures dipping significantly, residents experience a much colder atmosphere alongside heightened humidity levels. The month is also marked by an increase in precipitation, teasing the arrival of winter with snow and rain spread across several days. This shift transforms the landscape into a wintry wonderland, inviting both adventure and reflection. To learn more about the overall climate patterns, visit Coulee Dam Climate.