Last updated: February 24, 2025
In August, Coulee Dam, United States, experiences a dynamic climate, characterized by a striking maximum temperature of 39°C (102°F) and an average of 23°C (74°F). The nights bring a refreshing touch, with temperatures dropping to a minimum of 8°C (46°F). Despite the warmth, the region sees only 8 mm (0.3 in) of precipitation over just 2 days, resulting in a relatively dry month. The humidity level hovers around 62%, adding to the summer atmosphere and making for a vibrant, albeit hot, experience for locals and visitors alike.
In August, Coulee Dam experiences warm temperatures, marking a significant shift from the frigid depths of winter. The month features a minimum temperature of 8°C (46°F), an average of 23°C (74°F), and peaks at a maximum of 39°C (102°F), showcasing the summer's arrival and its impact on the region. This trend of increasing warmth culminates in July's extremes, where temperatures can soar as high as 41°C (107°F). As August unfolds, the average temperature remains robust, yet it gently begins to transition into the cooler months ahead. This blend of warm summer days and cooler nights makes August an ideal time for outdoor activities, as residents and visitors alike enjoy the remaining warmth before the crispness of fall takes hold.
August in Coulee Dam, United States, marks a notable shift in precipitation patterns, with a total of 8 mm (0.3 in) recorded over just 2 days. This modest amount is a stark contrast to the heavier rainfall at the start of the year, where January peaks at 67 mm (2.6 in) across 11 days. As summer progresses, precipitation dwindles significantly, with July experiencing a mere 4 mm (0.1 in) on just 1 day. The trend indicates a dry spell typical for the mid-year months, culminating in August, where the dry conditions begin to shift as fall approaches, foreshadowing an uptick in rainfall that resumes with 24 mm (1.0 in) in September. Overall, August reflects the climatic transition in Coulee Dam, characterized by a significant reduction in precipitation compared to the wetter months earlier in the year.
August in Coulee Dam, United States, marks a notable shift in humidity levels, dipping to 62%—the lowest point of the year. This decrease follows the warm, humid months of July and June, which maintained levels of 77% and 79%, respectively. The transition to August signifies the beginning of a decline in overall humidity, as the region heads towards the cooler months of September, which continues the trend with 60% humidity. This pattern highlights a significant drop compared to the high humidity of the winter months, where figures frequently reach above 80%. As summer gives way to fall, Coulee Dam experiences a refreshing reduction in moisture, making August a uniquely pleasant month in the annual climate cycle.
In August, Coulee Dam experiences a consistently high UV Index of 9, categorized as very high, which corresponds to a burn time of just 15 minutes. This trend mirrors the intense conditions seen in both June and July, highlighting a peak in solar exposure during the summer months. As the year transitions to fall, the UV Index begins to decline, dropping to 7 in September and further down to 5 by October, indicating a more moderate exposure. With these significant variations throughout the year, it's essential for residents and visitors to stay vigilant about sun protection during the intense summer days. For more detailed information, check the Coulee Dam UV Index.
UV Risk Categories
August in Coulee Dam, United States, is a time when the sun continues to shine brightly, contributing 363 hours of dazzling light. This reflects a slight decline from the peak sunshine enjoyed in July, which boasted a remarkable 418 hours. However, August maintains its status as one of the sunniest months of the year, nestled comfortably in the midst of a summer that started with a gradual increase in sunlight since January's 98 hours. This upward trend reaches its zenith in June and July, before the gradual tapering off begins in August and continues through the fall months. As summer transitions into autumn, the warm, sunlit days of August invite residents and visitors alike to savor the lingering warmth before the cooler seasons set in.
In Coulee Dam, August enjoys a 63% chance of sunny weather, making it one of the more radiant months of the year. This figure reflects a dip from the striking peak of 88% recorded in July, yet it remains significantly higher than earlier months like January and November, which barely reach 25%. As spring yields to summer, the probability of sunshine steadily rises, hitting a high note in July, then gracefully settling in August. This trend underscores the warm, sunny character of late summer in Coulee Dam, inviting both residents and visitors to soak up the sun before the cooler autumn days arrive.
In August, Coulee Dam enjoys approximately 14 hours of daylight, marking a slight decline from the peak of 15 hours reached during the summer months of June and July. This gradual decrease signals the transition from the long, sun-soaked days of summer to the shorter days of autumn. As the year progresses, the daylight duration experiences a rhythmic ebb and flow, beginning at 8 hours in January, escalating through spring into summer, before starting to wane again in September. This trend highlights the natural cycle of seasons, encapsulating the essence of change and the passage of time in this beautiful region.
In Coulee Dam, August experiences a consistent breeze with an average wind speed of 2.5 m/s (6 mph), paralleling the gentle winds seen in July. This stability hints at a calmness that permeates the summer months, as wind speeds generally reflect a gradual increase leading up to the summer peak in May before settling down slightly in August. The prevailing trends indicate that while spring's winds fluctuate more noticeably, the summer months embrace a harmonious and moderate wind pattern, ideal for outdoor activities and enjoying the picturesque landscapes of the region. As September approaches, a subtle decline is anticipated, with wind speeds dropping to 2.3 m/s (5 mph), marking the transition into the autumn season.
The weather in Coulee Dam changes throughout the year, offering a unique experience in each season. Below is a month-by-month comparison of August'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.
August and January present stark contrasts in weather conditions. In August, temperatures can soar from a minimum of 8°C (46°F) to a scorching maximum of 39°C (102°F), with an average of 23°C (74°F). The month is relatively dry, with just 8 mm (0.3 in) of precipitation across two days and a moderate humidity of 62%. In contrast, January experiences chillier temperatures, ranging from a minimum of -24°C (-11°F) to a maximum of 9°C (49°F), averaging at -2°C (28°F). This winter month is considerably wetter, receiving 67 mm (2.6 in) of precipitation over 11 days, accompanied by higher humidity levels of 85%. For a detailed look at January conditions, check out Coulee Dam weather in January.
August and February present starkly contrasting weather conditions. In August, temperatures range from a mild 8°C (46°F) to a blistering high of 39°C (102°F), with an average of 23°C (74°F). The humidity sits comfortably at 62%, alongside minimal precipitation of just 8 mm (0.3 in) across 2 days, making it a typically dry and warm month. In contrast, February brings chillier conditions, with temperatures dipping as low as -15°C (4°F) and averaging -2°C (28°F), peaking at 11°C (53°F). The month is significantly wetter, with 47 mm (1.9 in) of precipitation spread over 9 days and higher humidity levels at 86%. For more detailed insights, check out the Coulee Dam weather in February.
When comparing the weather in August and March, the differences are stark and profound. August typically boasts a much warmer climate with average temperatures around 23°C (74°F) and peaks reaching as high as 39°C (102°F). In contrast, March tends to be much cooler, with average temperatures hovering around 4°C (39°F) and maximums of only 18°C (65°F). Additionally, while August sees minimal precipitation and lower humidity at 62%, March experiences significantly higher rainfall—averaging 46 mm (1.8 in) over about 8 days—and a humidity level of 86%. For more detailed information on March weather specifically, check out Coulee Dam weather in March.
When comparing the weather in August and April, a stark contrast in temperatures and precipitation is evident. August boasts a much warmer range, with temperatures averaging 23°C (74°F), reaching a maximum of 39°C (102°F), while April sees much cooler conditions, with average temperatures around 9°C (48°F) and a maximum of only 26°C (78°F). Additionally, April experiences significantly more rainfall, recording 39 mm (1.6 in) over 7 days, compared to August's minimal 8 mm (0.3 in) over just 2 days. The humidity is also higher in April at 82%, compared to August’s 62%. For more detailed information, you can explore the Coulee Dam weather in April.
Comparing the weather in August and May reveals distinct seasonal differences. August typically experiences warmer temperatures, with daily averages around 23°C (74°F) and a maximum reaching up to 39°C (102°F), whereas May has cooler averages at 15°C (59°F) and max temperatures of 31°C (89°F). In terms of precipitation, May tends to be wetter, with an average of 37 mm (1.4 in) spread over seven days, compared to August's lighter rainfall of only 8 mm (0.3 in) over two days. Additionally, humidity levels are higher in May at 77%, compared to 62% in August, making May feel more humid despite the overall milder temperatures. For a closer look at the weather specifics for May, you can visit Coulee Dam weather in May.
In comparing the weather between June and August, August tends to be warmer overall, with an average temperature of 23°C (74°F) compared to June's average of 20°C (68°F). August also has a lower minimum temperature of 8°C (46°F) compared to June's 6°C (43°F), but it features a significant maximum temperature of 39°C (102°F), while June peaks at 43°C (110°F). Precipitation is less frequent in August with only 8 mm (0.3 in) over 2 days, compared to June's 13 mm (0.5 in) over 4 days, and August boasts a lower humidity level of 62% versus June's 79%. For a closer look at June's weather specifics, you can explore Coulee Dam weather in June.
In comparing the weather in August and July, we see a slight decrease in minimum temperatures, with August starting at a low of 8°C (46°F) compared to July's 11°C (51°F). The average temperature also dips marginally from 24°C (75°F) in July to 23°C (74°F) in August, while the maximum temperatures are still quite high, reaching up to 39°C (102°F) in August versus 41°C (107°F) in July. Precipitation is slightly higher in August, with 8 mm (0.3 in) over two days compared to only 4 mm (0.1 in) across one day in July, indicating that August may bring a touch more moisture to the atmosphere. Lastly, humidity levels are noticeably lower in August at 62% compared to July's higher 77%. For a more detailed look at July's weather in this area, you can visit Coulee Dam weather in July.
August and September show distinct differences in weather conditions. In August, temperatures soar with a minimum of 8°C (46°F) and an average high of 39°C (102°F), while September presents cooler temperatures, ranging from a minimum of 2°C (36°F) to a maximum of 35°C (95°F), with an average of 17°C (62°F). Precipitation increases notably in September, reaching 24 mm (1.0 in) over 3 days, while August experiences only 8 mm (0.3 in) over 2 days. Humidity remains relatively steady, at 62% in August and slightly lower at 60% in September. For more detailed weather patterns, visit Coulee Dam weather in September.
August and October present starkly contrasting weather conditions. August typically experiences mild nights with temperatures as low as 8°C (46°F) and scorching daytime highs reaching up to 39°C (102°F), along with relatively low humidity levels of 62% and minimal rainfall. In contrast, October sees a significant drop in temperatures, with minimums dipping to -7°C (20°F) and average highs around 8°C (48°F). The month is characterized by increased precipitation at 42 mm (1.7 in) over 7 days, and higher humidity at 80%. For more detailed insights on this month's weather patterns, you can check out Coulee Dam weather in October.
August and November exhibit strikingly different weather patterns. In August, temperatures range from a mild 8°C (46°F) at night to a scorching 39°C (102°F) during the day, with an average of 23°C (74°F). The month sees minimal precipitation, totaling only 8 mm (0.3 in) over just two days, while humidity sits at a comfortable 62%. In contrast, November brings a significant drop in temperatures, with a minimum of -9°C (16°F) and a maximum of 16°C (60°F), resulting in an average of just 3°C (37°F). This month experiences considerably more moisture, with 51 mm (2.0 in) of precipitation spread over 11 days and higher humidity at 87%. For more details on November conditions, visit Coulee Dam weather in November.
August and December present a stark contrast in weather conditions. August features a warmer climate, with average temperatures around 23°C (74°F) and maximums soaring to 39°C (102°F), accompanied by minimal precipitation of just 8 mm (0.3 in) over only 2 days. In contrast, December brings frigid temperatures, with averages dropping to -2°C (29°F) and minimums plunging as low as -19°C (-2°F). Additionally, December is significantly wetter, experiencing 57 mm (2.2 in) of precipitation over 11 days, and higher humidity at 86%. For a closer look at what to expect, check out Coulee Dam weather in December.
As summer peaks, August in Coulee Dam stands out with its sweltering temperatures, offering a stark contrast to the cooler months. With a maximum of 39°C (102°F) and an average of 23°C (74°F), this month basks in warmth, inviting outdoor activities under the sun. Despite the heat, precipitation is minimal, typically falling only a couple of days, which enhances the dry, warm atmosphere. The modest humidity of 62% adds a slight heaviness to the air, making the summer feel even more pronounced. For a more detailed look into the weather patterns throughout the year, visit Coulee Dam Climate.