August weather forecast
Thermopolis, WY

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Weather in August

August in Thermopolis continues the warm trend observed in July but cools down slightly as the month progresses. August records limited rainfall, with only 1.02" (26mm) falling on average over a span of 14.5 days. Higher UV levels calls for increased precautions during outdoor activities. Nevertheless, the combination of clear skies and warm temperatures creates a summer atmosphere that's hard to resist. As one of the warmest months of the year, August successfully prolongs the enthusiasm of summer before opening door to the upcoming fall season.

Temperature

The arrival of August marks a slight shift to an average high-temperature of a still moderately hot 81.9°F (27.7°C) from July's 84.9°F (29.4°C). Despite the stark contrast with daytime temperatures, Thermopolis's August nights average at a moderate 60.3°F (15.7°C).

Humidity

The months with the lowest humidity are July and August, with an average relative humidity of 35%.

Rainfall

In Thermopolis, during August, the rain falls for 14.5 days and regularly aggregates up to 1.02" (26mm) of precipitation. Throughout the year, in Thermopolis, Wyoming, there are 117.2 rainfall days, and 11.14" (283mm) of precipitation is accumulated.

Snowfall

In Thermopolis, Wyoming, snow does not fall in June through August.

Daylight

In August, the average length of the day in Thermopolis is 13h and 55min.
On the first day of August in Thermopolis, Wyoming, sunrise is at 6:02 am and sunset at 8:35 pm. On the last day of the month, sunrise is at 6:36 am and sunset at 7:49 pm MDT.

Sunshine

The average sunshine in August in Thermopolis, Wyoming, is 11.8h.

UV index

In August, the average daily maximum UV index in Thermopolis is 5. A UV Index reading of 3 to 5 represents a medium health hazard from unprotected exposure to Sun's UV rays for the average person.
Note: A daily maximum UV index of 5 in August translates into the following instructions:
Take care. Persons with lighter skin might suffer burns in less than 30 minutes. Considering the harmful UV rays from the Sun during midday, it's essential to reduce exposure. On sunny days, it's ideal to wear sunglasses that filter out UVA and UVB rays.
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Frequently asked questions

What are the temperatures in Thermopolis in August?

In Thermopolis, in August, the average high-temperature is 81.9°F (27.7°C), and the average low-temperature is 60.3°F (15.7°C).

What are the least humid months in Thermopolis?

July and August, with an average relative humidity of 35%, are the least humid months.

What is the average humidity in August in Thermopolis?

The average relative humidity in August in Thermopolis, Wyoming, is 35%.

How many days does it rain in August in Thermopolis?

In Thermopolis, in August, it is raining for 14.5 days, with typically 1.02" (26mm) of accumulated precipitation.

When it does not snow in Thermopolis?

June through August are months without snowfall in Thermopolis, Wyoming.

Does it snow in Thermopolis in August?

In Thermopolis, Wyoming, in August, it doesn't snow. In September, it regularly snows.

How many hours of daylight does Thermopolis have in August?

The average day length in August is 13h and 55min.

When are sunrise and sunset in August in Thermopolis?

In August, on the first day of the month, sunrise is at 6:02 am and sunset at 8:35 pm. On the last day of the month, in Thermopolis, Wyoming, sunrise is at 6:36 am and sunset at 7:49 pm MDT.

How many hours of sunshine does Thermopolis have in August?

In Thermopolis, Wyoming, the average sunshine duration in August is 11.8h.

How high is the UV index in August in Thermopolis?

The average daily maximum UV index in August in Thermopolis, Wyoming, is 5. A UV Index estimate of 3 to 5 represents a moderate health threat from unprotected exposure to UV radiation.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in August
Thermopolis, WY

Average temperature in August - Thermopolis, WY
  • Average high temperature in August: 81.9°F

The warmest month (with the highest average high temperature) is July (84.9°F).
The month with the lowest average high temperature is December (28.2°F).

  • Average low temperature in August: 60.3°F

The month with the highest average low temperature is July (61.3°F).
The coldest month (with the lowest average low temperature) is January (12.6°F).

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Average pressure in August
Thermopolis, WY

Average pressure in August - Thermopolis, WY
  • Average pressure in August: 29.95"Hg

The month with the highest atmospheric pressure is January (30.19"Hg).
The month with the lowest atmospheric pressure is June (29.88"Hg).

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Average wind speed in August
Thermopolis, WY

Average wind speed in August - Thermopolis, WY
  • Average wind speed in August: 5.5mph

The windiest month (with the highest average wind speed) is April (7.1mph).
The calmest month (with the lowest average wind speed) is January (5mph).

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Average humidity in August
Thermopolis, WY

Average humidity in August - Thermopolis, WY
  • Average humidity in August: 35%

The month with the highest relative humidity is January (81%).
The months with the lowest relative humidity are July and August (35%).

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Average rainfall in August
Thermopolis, WY

Average rainfall in August - Thermopolis, WY
  • Average rainfall in August: 1.02"

The wettest month (with the highest rainfall) is May (1.93").
The driest month (with the least rainfall) is January (0.43").

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Average rainfall days in August
Thermopolis, WY

Average rainfall days in August - Thermopolis, WY
  • Average rainfall days in August: 14.5 days

The month with the highest number of rainy days is May (17 days).
The months with the least rainy days are January and December (4.3 days).

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Average snowfall in August
Thermopolis, WY

Average snowfall in August - Thermopolis, WY
  • Average snowfall in August: 0"

The month with the highest snowfall is February (4.57").
The months with the least snowfall are June, July and August (0").

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Average snowfall days in August
Thermopolis, WY

Average snowfall days in August - Thermopolis, WY
  • Average snowfall days in August: 0 days

The month with the highest number of snowfall days is February (11.1 days).
The months with the least snowfall days are June, July and August (0 days).

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Average daylight in August /
Average sunshine in August
Thermopolis, WY

Average daylight in August / Average sunshine in August - Thermopolis, WY
  • Average daylight in August: 13h and 5min

The month with the longest days is June (Average daylight: 15h and 24min).
The month with the shortest days is December (Average daylight: 9h and 0min).

  • Average sunshine in August: 11h and 5min

The month with the most sunshine is July (Average sunshine: 11h and 54min).
The month with the least sunshine is February (Average sunshine: 6h and 12min).

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Average sunshine days in August
Thermopolis, WY

Average sunshine days in August - Thermopolis, WY
  • Average sunshine days in August: 11.7 days

The month with the most sunshine days is January (20.2 days).
The month with the least sunshine days is May (10.1 days).

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Average UV index in August
Thermopolis, WY

Average UV index in August - Thermopolis, WY
  • Average UV index in August: 5

The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January, February, March, April, November and December (UV index 2).

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Average cloud cover in August
Thermopolis, WY

Average cloud cover in August - Thermopolis, WY
  • Average cloud cover in August: 14

The month with the most cloud cover is February (Cloud cover 35).
The months with the least cloud cover are July and August (Cloud cover 14).

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Average visibility in August
Thermopolis, WY

Average visibility in August - Thermopolis, WY
  • Average visibility in August: 6mi

The months with the highest visibility are February, March, April, May, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is January (5mi).

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Thermopolis, Wyoming, USA

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