August weather forecastPerma, MT
August
Weather in August
The last month of the summer, August, is also a moderately hot month in Perma, Montana, with an average temperature ranging between min 49.5°F (9.7°C) and max 79.3°F (26.3°C).Temperature
Entering August, the average high-temperature is recorded at a still warm 79.3°F (26.3°C), exhibiting a minimal shift from July's 79.7°F (26.5°C). In stark contrast to the day's heat, the temperature dips to an average of 49.5°F (9.7°C) during August nights.Humidity
With an average relative humidity of 49%, August is the least humid month.Rainfall
July and August are months with the least rain in Perma when the rain falls for 7.4 days and typically aggregates up to 0.63" (16mm) of rain.Snowfall
June through August are months without snowfall in Perma, Montana.Daylight
In August, the average length of the day is 14h and 11min.On the first day of the month, sunrise is at 6:17 am and sunset at 9:11 pm. On the last day of August, in Perma, sunrise is at 6:57 am and sunset at 8:19 pm MDT.
Sunshine
In Perma, Montana, the average sunshine in August is 11.7h.UV index
In Perma, the average daily maximum UV index in August is 4. A UV Index estimate of 3 to 5 represents a moderate threat to health from unprotected exposure to Sun's UV rays for average individuals.Note: During August, 4 as the daily maximum UV index converts into the following advice:
Ensure safety - Sun damage prevention is strongly urged. Limiting exposure to the direct Sun during midday hours can help prevent harmful UV radiation effects. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in August
Perma, MT
- Average high temperature in August: 79.3°F
The warmest month (with the highest average high temperature) is July (79.7°F).
The month with the lowest average high temperature is December (28.4°F).
- Average low temperature in August: 49.5°F
The month with the highest average low temperature is August (49.5°F).
The coldest month (with the lowest average low temperature) is December (16.7°F).
Average pressure in August
Perma, MT
- Average pressure in August: 29.95"Hg
The month with the highest atmospheric pressure is January (30.18"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed in August
Perma, MT
- Average wind speed in August: 3.9mph
The windiest month (with the highest average wind speed) is April (4.8mph).
The calmest months (with the lowest average wind speed) are January, August and December (3.9mph).
Average humidity in August
Perma, MT
- Average humidity in August: 49%
The month with the highest relative humidity is January (91%).
The month with the lowest relative humidity is August (49%).
Average rainfall in August
Perma, MT
- Average rainfall in August: 0.63"
The wettest month (with the highest rainfall) is June (2.2").
The driest months (with the least rainfall) are July and August (0.63").
Average rainfall days in August
Perma, MT
- Average rainfall days in August: 7.4 days
The month with the highest number of rainy days is June (15.7 days).
The month with the least rainy days is August (7.4 days).
Average snowfall in August
Perma, MT
- Average snowfall in August: 0"
The month with the highest snowfall is February (6.5").
The months with the least snowfall are June, July and August (0").
Average snowfall days in August
Perma, MT
- Average snowfall days in August: 0 days
The month with the highest number of snowfall days is December (14.5 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in August /
Average sunshine in August
Perma, MT
- Average daylight in August: 14h and 12min
The month with the longest days is June (Average daylight: 15h and 54min).
The month with the shortest days is December (Average daylight: 8h and 30min).
- Average sunshine in August: 11h and 42min
The month with the most sunshine is July (Average sunshine: 11h and 48min).
The month with the least sunshine is January (Average sunshine: 4h and 42min).
Average sunshine days in August
Perma, MT
- Average sunshine days in August: 20.3 days
The month with the most sunshine days is July (20.8 days).
The month with the least sunshine days is February (11 days).
Average UV index in August
Perma, MT
- Average UV index in August: 4
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are February and December (UV index 1).
Average cloud cover in August
Perma, MT
- Average cloud cover in August: 14
The month with the most cloud cover is February (Cloud cover 52).
The month with the least cloud cover is August (Cloud cover 14).
Average visibility in August
Perma, MT
- Average visibility in August: 6mi
The months with the highest visibility are April, May, June, July, August, September and October (6mi).
The months with the lowest visibility are January, February and December (4mi).
