August weather forecastCheyenne, WY
August
Weather in August
August serves as a gentle reminder that summer is not perpetual as the temperature begins to fall slightly, yet it still remains quite warm. In August, Cheyenne boasts the lowest average cloud cover of 19%, proposing clear skies and extended sunshine. Farmers' markets abound, the sunshine complementing the vibrant produce and the cheerful chatter. Residents make the most of the remaining summer days, the weather providing ample opportunities for outdoor adventures.Temperature
With August's arrival, Cheyenne notes an average high-temperature of a still warm 81.1°F (27.3°C), closely following the trend of the preceding month. During August, Cheyenne's temperature records a considerable difference from its daily highs to an average low of 58.5°F (14.7°C).Heat index
The heat index in August is estimated at 80.6°F (27°C). If one persists in activity during exposure, it could induce weariness and subsequently, heat cramps.It is crucial to understand that heat index figures are for shade and gentle wind conditions. A rise in the heat index by 15 Fahrenheit (8 Celsius) degrees may result from direct sunlight exposure.
Note: The heat index, also known as 'apparent temperature' or 'feels like', integrates the air's temperature and its humidity to showcase the felt temperature by people. Elements of metabolic variation, physical activity, and clothing contribute to the effect of temperature on an individual. Direct sun rays have a notable impact on perceived temperature, which can raise the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly meaningful for babies and toddlers. Children regularly disregard the necessity to rest and replenish fluids. Thirst is a late symptom of dehydration - thus, maintaining hydration, particularly during long-lasting physical activities, is essential.
Humidity
The least humid month is August, with an average relative humidity of 43%.Rainfall
In Cheyenne, in August, it is raining for 11.7 days, with typically 0.83" (21mm) of accumulated precipitation. In Cheyenne, during the entire year, the rain falls for 116 days and collects up to 14.57" (370mm) of precipitation.Snowfall
June through September are months without snowfall.Daylight
The average length of the day in August is 13h and 46min.On the first day of August, sunrise is at 5:55 am and sunset at 8:15 pm. On the last day of the month, sunrise is at 6:25 am and sunset at 7:33 pm MDT.
Sunshine
The months with the most sunshine are July and August, with an average of 11.6h of sunshine.UV index
The months with the highest UV index are July and August, with an average maximum UV index of 6. A UV Index estimate of 6 to 7 represents a high health risk from unsafe exposure to UV radiation for average individuals.Note: In August, the UV index of 6 transforms into the following advice:
Persist with precautions and heed sun safety advice. Prevention of sunburn is compulsory. Avoid direct exposure to the Sun between 10 a.m. and 4 p.m., the peak period for UV radiation, noting that objects like parasols or canopies might not offer complete sun protection. It's wise to wear UVA and UVB-blocking sunglasses when the sun shines brightly.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in August
Cheyenne, WY
- Average high temperature in August: 81.1°F
The warmest month (with the highest average high temperature) is July (82.4°F).
The month with the lowest average high temperature is December (34.7°F).
- Average low temperature in August: 58.5°F
The month with the highest average low temperature is July (59.9°F).
The coldest month (with the lowest average low temperature) is December (20.3°F).
Average pressure in August
Cheyenne, WY
- Average pressure in August: 29.95"Hg
The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.87"Hg).
Average wind speed in August
Cheyenne, WY
- Average wind speed in August: 8.7mph
The windiest month (with the highest average wind speed) is January (14.2mph).
The calmest month (with the lowest average wind speed) is August (8.7mph).
Average humidity in August
Cheyenne, WY
- Average humidity in August: 43%
The month with the highest relative humidity is February (64%).
The month with the lowest relative humidity is August (43%).
Average rainfall in August
Cheyenne, WY
- Average rainfall in August: 0.83"
The wettest month (with the highest rainfall) is May (2.95").
The driest month (with the least rainfall) is January (0.43").
Average rainfall days in August
Cheyenne, WY
- Average rainfall days in August: 11.7 days
The month with the highest number of rainy days is May (17.5 days).
The month with the least rainy days is January (4.7 days).
Average snowfall in August
Cheyenne, WY
- Average snowfall in August: 0"
The month with the highest snowfall is March (6.06").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in August
Cheyenne, WY
- Average snowfall days in August: 0 days
The month with the highest number of snowfall days is February (11.3 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in August /
Average sunshine in August
Cheyenne, WY
- Average daylight in August: 13h and 48min
The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 18min).
- Average sunshine in August: 11h and 36min
The months with the most sunshine are July and August (Average sunshine: 11h and 36min).
The month with the least sunshine is February (Average sunshine: 6h and 30min).
Average sunshine days in August
Cheyenne, WY
- Average sunshine days in August: 15.5 days
The month with the most sunshine days is January (20.7 days).
The month with the least sunshine days is April (9.3 days).
Average UV index in August
Cheyenne, WY
- Average UV index in August: 6
The months with the highest UV index are July and August (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in August
Cheyenne, WY
- Average cloud cover in August: 19
The months with the most cloud cover are April and May (Cloud cover 32).
The month with the least cloud cover is September (Cloud cover 18).
Average visibility in August
Cheyenne, WY
- Average visibility in August: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
