Last updated: February 24, 2025
In May, Coulee Dam experiences a delightful range of temperatures, with a striking maximum of 31°C (89°F), an average of 15°C (59°F), and a refreshing minimum of 1°C (34°F). This transitional month brings about 37 mm (1.4 in) of precipitation over seven days, contributing to a humidity level of 77% that adds to the region's lush beauty. As spring unfolds, the climate sets the perfect stage for outdoor exploration and appreciation of the natural surroundings.
In May, Coulee Dam, United States, experiences a notable transition toward warmer weather, with temperatures reflecting a significant upward trend from the earlier months. Temperatures begin at a minimum of 1°C (34°F) and can peak at a baking 31°C (89°F), showcasing the shift from the lingering chill of winter. The average temperature in May reaches a comfortable 15°C (59°F), inviting outdoor activities and enjoying nature’s vibrant spring awakening. This month serves as a prelude to summer, bridging the gap between the frigid winter and the approaching heat, making it a delightful time for locals and visitors alike to revel in the burgeoning warmth.
In May, Coulee Dam experiences a notable shift in precipitation trends, receiving 37 mm (1.4 in) of rainfall over 7 days. This slight decline from April's 39 mm suggests a transition into drier conditions as spring gives way to early summer. While May's precipitation remains relatively modest compared to the earlier months of the year, it marks a significant contrast to the wetter January through April stretch. The decrease in both the amount of precipitation and the number of rainy days hints at the drier months ahead, setting the stage for the arid summer climate that Coulee Dam is known for. As the region prepares for June's expected drop to just 13 mm (0.5 in), the shift towards a drier season becomes increasingly evident.
In May, Coulee Dam experiences a notable dip in humidity, with levels averaging around 77%. This decline marks a shift from the higher humidity levels seen in the earlier months of the year, particularly January through April, where figures hovered between 82% and 86%. Following May, humidity begins to rise slightly in June, suggesting a gradual transition into the warmer summer months. Interestingly, this pattern highlights a distinct seasonal trend, with late spring offering a brief reprieve from the consistently high humidity that envelops the region for much of the winter and early spring, making May a refreshing interlude before the heat of summer sets in.
As spring transitions to summer in Coulee Dam, the UV Index experiences a notable surge. In May, the UV Index reaches 8, indicating a very high exposure category, significantly lower than the intense levels seen in the peak summer months of June through August. This rise from April's 6 emphasizes the importance of sun protection, with a reduced burn time of just 15 minutes for fair-skinned individuals. As we move into summer, the UV Index remains at this elevated level, demanding greater attention to skin safety. Understanding these trends is crucial for enjoying the outdoor activities the region has to offer while minimizing the risk of sunburn. For more detailed information on seasonal variations, visit Coulee Dam UV Index.
UV Risk Categories
As spring blossoms into summer in Coulee Dam, the sunshine hours reflect a captivating upward trend. May stands out with an impressive 355 hours of bright skies, paving the way for the sun-drenched days of June and July, which bask in 381 and 418 hours, respectively. The gradual increase from a mere 98 hours in January to the sun's peak during the summer months highlights the area's transition from winter's chill to summer's warmth. However, as the year progresses, the sunlight begins to wane; August still enjoys ample sunshine at 363 hours, but by the time we reach October, it drops to 240 hours, signaling the slow return of winter’s embrace. This rhythmic cycle of sunlight not only paints an idyllic picture of seasonal change but also invites residents and visitors to soak in the beauty of each phase throughout the year.
In Coulee Dam, the chances of sunny weather show a promising trend as we move into May, reaching 59%—a significant increase from the 56% in April. This upward trajectory is part of a broader pattern as the region transitions into summer, where June boasts a 63% likelihood of sunny days, further peaking in July at an impressive 88%. As the year progresses, the chances of sunshine visibly improve, with May serving as a delightful gateway into this sunnier season. Enjoying the outdoors is becoming increasingly feasible as the warm months approach, making May an ideal time to embrace Coulee Dam’s blossoming beauty.
As spring blooms into May in Coulee Dam, the length of daylight reaches its peak, offering 15 hours of vibrant sunshine. This month marks a notable shift, as the community transitions from the shorter, darker days of winter, with just 8 hours of daylight in January. The gradual increase in daylight becomes evident as months progress—starting from 10 hours in February, then 11 in March, and jumping to 13 by April. Following May, daylight begins to gently taper off, with 15 hours sustained through June and July before slightly decreasing in August. This pattern reflects the region's natural rhythm, where the longest days serve as a brilliant backdrop for outdoor activities and the celebration of summer's arrival, gradually giving way to the shorter days of fall and winter.
May brings a gentle breeze to Coulee Dam, with average wind speeds reaching 2.9 m/s (6 mph), marking a slight increase from the previous months. This upward trend in wind velocity becomes particularly noticeable as residents transition from the cooler spring months to the warmer onset of summer. Interestingly, the winds in May not only provide a refreshing atmosphere but also mirror the stability of early summer conditions, maintaining a consistent speed throughout the season. As the days grow longer and warmer, these mild winds enhance outdoor experiences, inviting both residents and visitors to enjoy the natural beauty of the area.
The weather in Coulee Dam changes throughout the year, offering a unique experience in each season. Below is a month-by-month comparison of May'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.
May and January present strikingly contrasting weather conditions. In May, temperatures range from a minimum of 1°C (34°F) to a maximum of 31°C (89°F), with an average of 15°C (59°F). The month also sees about 37 mm (1.4 in) of precipitation over approximately 7 days, accompanied by a humidity level of 77%. In contrast, January features much colder weather, with temperatures dropping as low as -24°C (-11°F) and averaging -2°C (28°F), reaching a high of only 9°C (49°F). The month is wetter, receiving around 67 mm (2.6 in) of precipitation over 11 days, and displays a higher humidity level of 85%. For further details on January's weather, visit Coulee Dam weather in January.
When comparing the weather in May and February, there is a striking contrast in temperature and conditions. May typically enjoys a mild climate with temperatures ranging from a minimum of 1°C (34°F) to a maximum of 31°C (89°F), averaging around 15°C (59°F). In contrast, February is much colder, with temperatures plunging as low as -15°C (4°F) and peaking at 11°C (53°F), giving it an average of -2°C (28°F). Additionally, February experiences more humidity at 86% and higher precipitation of 47 mm (1.9 in) over 9 days compared to May's 37 mm (1.4 in) over 7 days. For more detailed insights on February's climate, visit Coulee Dam weather in February.
Comparing the weather in May and March reveals a significant shift in temperatures and conditions. In March, the minimum temperature can drop to -18°C (0°F), with an average of 4°C (39°F) and a maximum reaching only 18°C (65°F). In contrast, May experiences much warmer conditions with minimums around 1°C (34°F), averaging 15°C (59°F) and peaking at a pleasant 31°C (89°F). While March sees a slightly higher precipitation total at 46 mm (1.8 in) over 8 days, May is drier with 37 mm (1.4 in) falling across 7 days, even though it has a higher average humidity of 77% compared to March's 86%. For more detailed information about the March weather, you can refer to Coulee Dam weather in March.
In comparing the weather between April and May, it is evident that May experiences a notable rise in temperatures, with a minimum of 1°C (34°F) and an average of 15°C (59°F), compared to April's cooler minimum of -4°C (26°F) and average of 9°C (48°F). The maximum temperature in May reaches 31°C (89°F), significantly warmer than April's peak of 26°C (78°F). Precipitation levels are fairly similar, with May receiving 37 mm (1.4 in) over 7 days and April slightly higher at 39 mm (1.6 in) also over 7 days. Humidity remains relatively consistent, with May at 77% and April slightly higher at 82%. For more detailed insights, check out the full analysis here: Coulee Dam weather in April.
In comparing the weather of May and June, we can see a marked increase in average temperatures. May experiences a minimum of 1°C (34°F) and an average of 15°C (59°F), whereas June starts at a higher minimum of 6°C (43°F) and averages around 20°C (68°F). The maximum temperatures also rise significantly, with May peaking at 31°C (89°F) compared to June's scorching high of 43°C (110°F). Additionally, June sees considerably less precipitation, only 13 mm (0.5 in) over about 4 days, compared to May's 37 mm (1.4 in) over 7 days. Humidity levels remain relatively similar, with May at 77% and June slightly higher at 79%. For more detailed weather insights, you can visit Coulee Dam weather in June.
May and July present contrasting weather patterns, showcasing the transition from spring to summer. In May, temperatures range from a chilly 1°C (34°F) at night, climbing to an average of 15°C (59°F) during the day, and peaking at 31°C (89°F). This month experiences more precipitation, with about 37 mm (1.4 in) over 7 days, accompanied by a relatively high humidity of 77%. In stark contrast, July features a much warmer climate, with minimum temperatures of 11°C (51°F) and an impressive daytime average of 24°C (75°F), reaching heights of up to 41°C (107°F). The month is notably drier, receiving just 4 mm (0.1 in) of rain over a single day, while maintaining the same humidity level of 77%. For more specifics, check out Coulee Dam weather in July.
May and August present quite contrasting weather patterns. In May, temperatures range from a cool minimum of 1°C (34°F) to a warm maximum of 31°C (89°F), with an average temperature of 15°C (59°F). The month experiences more precipitation, totaling 37 mm (1.4 in) over about 7 days, contributing to a higher humidity level of 77%. In stark contrast, August boasts more consistent warmth, with temperatures ranging from a minimum of 8°C (46°F) to a scorching maximum of 39°C (102°F), averaging at 23°C (74°F). This month sees significantly less rain, with just 8 mm (0.3 in) falling over only 2 days and lower humidity at 62%. For more details on August weather, check out Coulee Dam weather in August.
May and September offer distinctly different weather experiences. In May, temperatures range from a chilly 1°C (34°F) at night to a warm 31°C (89°F) during the day, while September sees slightly milder conditions with a minimum of 2°C (36°F) and a maximum of 35°C (95°F). Both months feature relatively low precipitation, but May has slightly more rainfall at 37 mm (1.4 in) compared to September's 24 mm (1.0 in) over fewer days. Additionally, May's humidity is higher at 77%, while September enjoys a drier atmosphere with only 60% humidity. For more specific insights, you can check Coulee Dam weather in September.
May and October present contrasting weather patterns, each with its unique characteristics. In May, temperatures range from a chilly 1°C (34°F) to a warm 31°C (89°F), with an average of 15°C (59°F) and relatively low precipitation of 37 mm (1.4 in) over about seven days. Humidity in May averages around 77%, making it feel quite pleasant during warmer days.
In contrast, October features cooler conditions, with temperatures dipping to a minimum of -7°C (20°F) and a maximum of 26°C (78°F), resulting in an average of just 8°C (48°F). Precipitation increases slightly to 42 mm (1.7 in) over the same number of days, while humidity rises to 80%, which can make the air feel crisper and more pronounced. For detailed insights about October weather, you can check this link: Coulee Dam weather in October.
May and November exhibit strikingly different weather patterns. In May, temperatures range from a mild 1°C (34°F) to a warm 31°C (89°F), with an average of 15°C (59°F) and relatively low precipitation at 37 mm (1.4 in) over about 7 days. The humidity is moderate at 77%, making it a pleasant month for outdoor activities. In contrast, November experiences much colder temperatures, with a minimum of -9°C (16°F) and a maximum of 16°C (60°F), averaging just 3°C (37°F). Rainfall increases to 51 mm (2.0 in), spread over 11 days, and the humidity rises to 87%, creating a much more damp and chilly atmosphere. For more specifics on November weather, check out Coulee Dam weather in November.
May and December present starkly contrasting weather conditions. In May, temperatures range from a chilly minimum of 1°C (34°F) to a warm average of 15°C (59°F) and can peak at 31°C (89°F). The month sees moderate precipitation of 37 mm (1.4 in) over about 7 days, accompanied by relatively high humidity at 77%. In contrast, December brings much colder conditions, with temperatures dropping to a minimum of -19°C (-2°F) and an average of -2°C (29°F), peaking at a mild 16°C (60°F). Precipitation in December is higher at 57 mm (2.2 in), spread over about 11 days, and the humidity rises to 86%, creating a much frostier and damp environment overall. For more detailed insights, you can check out the Coulee Dam weather in December.
As May arrives at Coulee Dam, the weather begins to transform, offering a vibrant contrast to the preceding months. With temperatures climbing, residents and visitors can enjoy warmer days while the chilly nights still linger, creating a delightful interplay of cool and warmth. The average humidity, sitting at a relatively high 77%, adds a refreshing touch to the air, while the increased precipitation over a handful of days ensures that the landscape thrives in lush greens. This month acts as a bridge between spring showers and the approaching summer heat, making it a unique time to experience the natural beauty of the area. For more details, check out the full Coulee Dam Climate.