August Weather in Thermopolis, United States

Last updated: February 24, 2025

In August, Thermopolis, Wyoming experiences a warm and inviting climate, with maximum temperatures soaring up to a sizzling 38°C (100°F) and a comfortable average of 22°C (72°F). The coolest nights dip down to 7°C (44°F), offering a refreshing reprieve. Rainfall is modest, with a total of 18 mm (0.7 in) spread across a mere 3 days, contributing to the region's lush landscape. Additionally, humidity levels hover around 59%, enhancing the warm summer ambiance. Whether basking in the sun or exploring the scenic outdoors, August in Thermopolis promises enjoyable weather for all.

August Temperature in Thermopolis

In August, Thermopolis, United States, experiences a delightful summer heat, showcasing minimum temperatures of 7°C (44°F) and an average of 22°C (72°F). With maximums reaching a sizzling 38°C (100°F), this month marks a peak in warmth, easily outshining the cooler winter months. As the summer progresses from June to August, average temperatures rise significantly, a trend underscored by the extreme highs of July. August not only maintains these elevated temperatures but also offers pleasant evenings, creating an inviting atmosphere for outdoor activities and exploration. As summer wanes, the early signs of fall begin to appear, yet for now, the heat still reigns, making August a memorable highlight in Thermopolis’s annual climate.

August Weather in Thermopolis: Daily Temperature Highs, Lows, and Averages

The chart illustrates August temperature patterns in Thermopolis, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends.
JanFebMarAprMayJunJulAugSepOctNovDec212137445467767262443424
Data source: Temperature data for Thermopolis generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

August Precipitation in Thermopolis

August in Thermopolis sees a moderate precipitation level of 18 mm (0.7 in), marking a slight uptick compared to the drier summer months of July, which recorded only 13 mm (0.5 in). The 3 days of rainfall in August contribute to a trend of increased moisture as the region transitions towards fall. This pattern complements the wetter conditions observed in the spring months, especially April and May, which experience significantly higher precipitation. Overall, August serves as a bridge between the warm summer and the cooler autumn, bringing a refreshing respite to the arid landscape.

August Precipitation Trends in Thermopolis

The chart displays monthly precipitation patterns in Thermopolis, with values for each month alongside August's data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how August's conditions compare to those of other months.
JanFebMarAprMayJunJulAugSepOctNovDec112122536727131827271714
Data source: Precipitation data for August generated using information from the Copernicus Climate Change Service.
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August Humidity in Thermopolis

August in Thermopolis marks a notable turning point in humidity levels, with the average dropping to 59%, the lowest of the year. This decrease follows a steady decline from the summer months, where humidity hovered around 65% in July. As the warmth of summer gives way to the onset of fall, August experiences a refreshing drop, aligning with a trend of decreasing humidity from the late spring peak of 69% in May. The transition is a precursor to the cooler months ahead, as humidity rises again with the arrival of autumn, peaking at 83% in November. This cyclical pattern not only underscores Thermopolis's seasonal shifts but also offers a glimpse into the region's diverse climatic character.

August Average Humidity in Thermopolis

This chart illustrates the average monthly humidity levels in Thermopolis, with August's data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, allowing you to see how August's humidity levels compare to other months.
JanFebMarAprMayJunJulAugSepOctNovDec90%89%82%72%69%67%65%59%59%69%83%89%
Data source: Humidity data for August generated using information from the Copernicus Climate Change Service.

August UV Index in Thermopolis

In August, Thermopolis experiences a very high UV Index of 10, necessitating caution during outdoor activities, with a burn time of just 15 minutes. This peak in UV radiation follows the extreme conditions of June and July, where the UV Index reached a maximum of 11. As summer progresses, residents and visitors should be particularly vigilant about sun protection, as the risk remains elevated through September. With the UV Index steadily declining into the fall months, it's clear that late summer continues to pose significant sun exposure risks in this region. For more detailed information on the UV Index throughout the year, visit Thermopolis UV Index.

Maximum UV Index Levels in Thermopolis for August

The chart shows the monthly maximum UV Index (UVI) for Thermopolis in August, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues.
JanFebMarAprMayJunJulAugSepOctNovDec3569101111109643
Data source: Thermopolis August UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

  •  Extreme (11+): Avoid the sun, stay in shade.
  •  Very High (8-10): Limit sun exposure.
  •  High (6-7): Use SPF 30+ and protective clothing.
  •  Moderate (3-5): Midday shade recommended.
  •  Low (0-2): No protection needed.

August Sunshine in Thermopolis

August in Thermopolis basks in an impressive 356 hours of sunshine, marking it as the perfect time for outdoor adventures and relaxation. Following the sun-soaked peak of July, which boasts the highest sunshine hours at 391, August maintains a robust brightness, even as the days begin to shorten. This month is a stunning prelude to fall, holding on to the warmth of summer, while September sees a gentle decline to 301 hours. The sunshine trend clearly showcases the vibrant summer months from May through August, where hours consistently rise, creating an inviting atmosphere for both residents and visitors to enjoy the great outdoors.

Monthly Sunshine Duration in Thermopolis: August Highlighted

The August sunshine duration represents the total number of hours Thermopolis experiences direct sunlight during the month of August, excluding cloudy or obstructed periods. This chart compares the sunshine duration of August with the other months of the year.
JanFebMarAprMayJunJulAugSepOctNovDec169h219h283h293h325h384h391h356h301h260h227h216h
Data source: Thermopolis August Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Thermopolis During August

In Thermopolis, August shines as one of the sunniest months of the year, boasting a 65% chance of clear skies. This reflects a positive trend in sunshine hours as summer progresses, following closely on the heels of July’s similar likelihood of sun. Notably, as the seasons shift from the cooler grasp of spring—where the odds hover below 50%—the warmth of summer brings a welcomed increase in sunshine. This upward trajectory continues into September, which presents even brighter prospects at 74%, making late summer an ideal time for outdoor adventures in this charming town.

Percentage of Sunny Days in August in Thermopolis

The chart illustrates the percentage of sunny days in Thermopolis throughout the year, with August highlighted. It highlights the variation in sunshine across each month and provides an overview of the typical frequency of sunny days, offering insights into how often Thermopolis experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec53%45%50%49%45%68%65%65%74%52%44%51%
Data source: Thermopolis August chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Thermopolis in August

In Thermopolis, United States, the August daylight duration marks a transition in the summer's leisurely embrace, offering approximately 13 hours of sunlight. This is a slight decline from the peak of 15 hours experienced in June and July, signaling the gradual approach of autumn. As days start to shorten, the trend from earlier in the year shifts from the burgeoning light of spring—where March brings 11 hours, and April stretches it to 13—toward the cozy, candle-lit evenings of fall. Notable is the seasonal rhythm where daylight peaks in mid-summer before tapering off; September will see a further reduction to 12 hours, hinting at the cooler months ahead. The ebb and flow of sunlight throughout the year not only shapes the days but also the essence of life in Thermopolis, painting a vivid picture of nature's cyclical dance.

Average Daylight Hours in Thermopolis for August

The chart illustrates the variation in daylight duration in Thermopolis throughout the year, with August highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec9h 20m10h 30m11h 58m13h 27m14h 44m15h 22m15h 1m13h 52m12h 26m10h 57m9h 38m8h 58m
Data source: Thermopolis daylight hours, calculated by summing the hours between sunrise and sunset for each day.

August Winds in Thermopolis

In August, the winds in Thermopolis maintain a gentle hum, with an average speed of 2.6 m/s (6 mph), mirroring the breeziness found in the preceding summer months. This consistency in wind patterns from July and September suggests a stable climatic rhythm as summer transitions into early fall. Observing the year as a whole, one can see that wind speeds generally peak in the spring and early winter, with April and December experiencing the strongest gusts. Overall, the moderate wind speeds in August contribute to the region's pleasant summer atmosphere, making it an ideal backdrop for outdoor activities and leisurely pursuits.

Average August Wind Speed in Thermopolis

The chart displays monthly wind speed patterns in Thermopolis, with values for each month shown alongside August's data, which is highlighted for easy comparison. It illustrates the average wind speed, offering insights into how August's wind conditions compare to the rest of the year.
JanFebMarAprMayJunJulAugSepOctNovDec2.42.62.83.22.83.02.52.6 m/s2.62.62.43.1
Data source: Thermopolis August wind data, generated using information from the Copernicus Climate Change Service.

How August Weather in Thermopolis Compares to Other Months

The weather in Thermopolis 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 Thermopolis and find detailed weather information for every month.

August and January present stark contrasts in weather conditions. In August, temperatures range from a mild 7°C (44°F) at night to a scorching 38°C (100°F) during the day, complemented by an average of 22°C (72°F). The month typically sees minimal precipitation, averaging 18 mm (0.7 in) over about three days, with a moderate humidity of 59%. In contrast, January faces a harsh winter chill, where temperatures plummet as low as -29°C (-20°F), with highs only reaching 11°C (52°F) and an average of -6°C (21°F). This month experiences slightly less precipitation, totaling 11 mm (0.4 in) over just two days, but the humidity is significantly higher at 90%. To get more details about the frigid conditions, you can check Thermopolis weather in January.

August and February present stark contrasts in weather conditions. August typically experiences warmer temperatures, with minimums around 7°C (44°F), averages reaching 22°C (72°F), and maximums soaring up to 38°C (100°F). The month also experiences relatively low precipitation, averaging just 18 mm (0.7 in) over about 3 days, and maintaining a moderate humidity of 59%. In contrast, February is characterized by much colder temperatures, with minimums plunging to -25°C (-13°F) and average highs being only 14°C (57°F). This month sees slightly higher precipitation at 21 mm (0.8 in) spread over 6 days, alongside significantly higher humidity levels of 89%. For a closer look at February weather patterns, you can check Thermopolis weather in February.

August and March display starkly contrasting weather characteristics. In August, temperatures range from a mild 7°C (44°F) to a scorching maximum of 38°C (100°F), with an average of 22°C (72°F). The month typically sees minimal precipitation, only about 18 mm (0.7 in) over three days and a moderate humidity level of 59%. Conversely, March experiences much colder temperatures, with a minimum of -27°C (-16°F) and a maximum of 24°C (76°F), averaging just 3°C (37°F). This month tends to be wetter, with 22 mm (0.9 in) of precipitation spread over five days and higher humidity at 82%. For a detailed look at the weather conditions in March, check out Thermopolis weather in March.

When comparing the weather in August and April, there are notable differences in temperature and precipitation patterns. August boasts a much warmer climate, with average temperatures reaching 22°C (72°F) and highs soaring up to 38°C (100°F), while April's temperatures range from a chilly -15°C (5°F) at night to an average of just 7°C (44°F) during the day. Additionally, April experiences significantly higher precipitation, averaging 53 mm (2.1 in) over 9 days, compared to August’s lighter rainfall of 18 mm (0.7 in) over just 3 days. Humidity levels also tend to be higher in April at 72%, compared to 59% in August, illustrating the stark contrast between these two months. For a more detailed look at April's weather, you can explore Thermopolis weather in April.

When comparing the weather in August and May, notable differences emerge. August typically experiences warmer temperatures, ranging from a chilly minimum of 7°C (44°F) to a sizzling maximum of 38°C (100°F), with an average of 22°C (72°F). In contrast, May starts off quite cool, with temperatures ranging from a minimum of -4°C (25°F) to a pleasant max of 31°C (88°F), averaging only 12°C (54°F). Additionally, August is relatively dry, receiving only 18 mm (0.7 in) of precipitation over three days, while May sees significantly more rain, with 67 mm (2.6 in) spread over ten days. Humidity levels are also slightly higher in May at 69% compared to August's 59%. For more detailed information, you can check out Thermopolis weather in May.

When comparing the weather in August and June, we can see notable differences. In August, the temperatures range from a minimum of 7°C (44°F) to a maximum of 38°C (100°F), with an average temperature of 22°C (72°F). The month experiences lower precipitation, with only 18 mm (0.7 in) falling over just 3 days and a humidity level of 59%. In contrast, June boasts a slightly colder minimum temperature of 1°C (35°F), but can reach up to 39°C (103°F), with an average of 20°C (68°F). June also sees more precipitation, amounting to 27 mm (1.1 in) over 6 days, accompanied by higher humidity at 67%. For a deeper insight into the weather patterns during June, you can check Thermopolis weather in June.

In comparing the weather of August and July, August displays a slightly cooler average temperature of 22°C (72°F) compared to July's warmer 24°C (76°F). Both months experience similar minimum temperatures of 7°C (44°F), but August's maximum temperature reaches up to 38°C (100°F), slightly lower than July's peak at 40°C (104°F). Precipitation in August is marginally higher at 18 mm (0.7 in) over three days, compared to July's 13 mm (0.5 in) over two days, while humidity levels are also lower in August at 59% compared to July's 65%. For a more detailed look into July's weather patterns, visit Thermopolis weather in July.

In August, the weather showcases a warmer profile with temperatures ranging from a minimum of 7°C (44°F) to a maximum of 38°C (100°F), while September sees a notable drop in the minimum temperature to -4°C (24°F) and an average of 17°C (62°F). Despite both months experiencing a similar number of precipitation days at three, September tends to have a slightly higher rainfall, totaling 27 mm (1.0 in) compared to August's 18 mm (0.7 in). Humidity levels remain constant at 59% for both months, contributing to a persistent feel of moisture in the air. For more detailed information about September weather patterns, you can check out Thermopolis weather in September.

August and October present stark contrasts in weather conditions. In August, temperatures range significantly, with a minimum of 7°C (44°F) and highs soaring up to 38°C (100°F), resulting in an average of 22°C (72°F). The month experiences relatively low precipitation, with only 18 mm (0.7 in) falling over just three days and average humidity at 59%. In contrast, October sees much cooler temperatures, with a minimum of -22°C (-8°F) and a modest maximum of 28°C (83°F), averaging 7°C (44°F). Precipitation increases to 27 mm (1.1 in) spread over six days, accompanied by higher humidity at 69%. For more details on October weather, you can check Thermopolis weather in October.

August and November present strikingly different weather patterns. In August, temperatures range from a mild 7°C (44°F) at night to a scorching 38°C (100°F) during the day, with an average of 22°C (72°F), allowing for plenty of outdoor activities in pleasantly warm conditions. Rainfall is minimal, averaging just 18 mm (0.7 in) over three days, and the humidity sits at a comfortable 59%. In contrast, November brings a much chillier atmosphere, with temperatures plummeting to a minimum of -16°C (4°F) and an average of just 1°C (35°F), despite a maximum reach of 21°C (70°F) during warmer spells. Precipitation is slightly higher at 17 mm (0.7 in) over four days, and the humidity increases significantly to 83%, creating a damp, cold environment. For more details about November weather specifically, you can visit Thermopolis weather in November.

August and December present stark contrasts in weather. In August, temperatures can swing from a mild 7°C (44°F) at night to a blistering 38°C (100°F) during the day, with an average of 22°C (72°F). The humidity stands at a comfortable 59%, and there’s relatively little precipitation, totaling 18 mm (0.7 in) over just three days. In contrast, December brings a chilling drop as temperatures plummet, with a minimum of -25°C (-12°F) and an average of -4°C (24°F). The maximum temperature reaches only 18°C (65°F), accompanied by much higher humidity levels at 89%. Although December receives slightly lower precipitation (14 mm or 0.6 in) spread over four days, the cold is palpable. For more detailed insights into December's weather, you can check Thermopolis weather in December.

Compare Thermopolis's Climate with Cities Worldwide

Conclusion: What to Expect From August Weather in Thermopolis

August in Thermopolis stands out as a month of warmth and vibrancy, marked by long sunny days that invite outdoor adventures. With higher temperatures compared to the preceding months, it provides a perfect backdrop for exploring the stunning natural landscapes. While there are occasional days of light precipitation, they are infrequent, allowing for more time under the bright Wyoming sun. The humidity level adds a touch of comfort to the warm days, creating an energizing atmosphere. Overall, August serves as a delightful peak of summer, differentiating itself from the cooler temperatures and higher precipitation that characterize the spring and early summer months. For a deeper insight into the unique weather patterns of this charming town, visit Thermopolis Climate.