August weather forecastGrass Range, MT
August
Weather in August
August, the last month of the summer in Grass Range, is another warm month, with an average temperature varying between 78.1°F (25.6°C) and 54.5°F (12.5°C).Temperature
The onset of August marks an average high-temperature of a still warm 78.1°F (25.6°C), hardly differing from July's 78.8°F (26°C). Grass Range's nighttime temperature in August demonstrates a noticeable plunge to a fresh 54.5°F (12.5°C).Humidity
August is the least humid month in Grass Range, with an average relative humidity of 47%.Rainfall
In Grass Range, in August, during 10.5 rainfall days, 1.34" (34mm) of precipitation is typically accumulated. Throughout the year, there are 126.2 rainfall days, and 17.83" (453mm) of precipitation is accumulated.Snowfall
July and August are months without snowfall in Grass Range.Daylight
In Grass Range, the average length of the day in August is 14h and 10min.On the first day of August in Grass Range, sunrise is at 5:55 am and sunset at 8:47 pm. On the last day of the month, sunrise is at 6:34 am and sunset at 7:56 pm MDT.
Sunshine
In Grass Range, Montana, the average sunshine in August is 11.4h.UV index
The average daily maximum UV index in August is 5. A UV Index reading of 3 to 5 represents a moderate health risk from exposure to the Sun's UV rays for average individuals.Note: During August, 5 as the daily maximum UV index converts into the following advice:
Heed the precautions - Suggestions to avoid sunburn are made. It's recommended to limit sun exposure when its radiation is at its peak during midday. For optimum UV protection, wear sun-resistant attire complemented with a hat and quality shades.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in August
Grass Range, MT
- Average high temperature in August: 78.1°F
The warmest month (with the highest average high temperature) is July (78.8°F).
The months with the lowest average high temperature are February and December (29.1°F).
- Average low temperature in August: 54.5°F
The month with the highest average low temperature is August (54.5°F).
The coldest month (with the lowest average low temperature) is February (15.3°F).
Average pressure in August
Grass Range, MT
- Average pressure in August: 29.9"Hg
The month with the highest atmospheric pressure is January (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.85"Hg).
Average wind speed in August
Grass Range, MT
- Average wind speed in August: 7.4mph
The windiest months (with the highest average wind speed) are January, April and October (9.9mph).
The calmest month (with the lowest average wind speed) is August (7.4mph).
Average humidity in August
Grass Range, MT
- Average humidity in August: 47%
The month with the highest relative humidity is February (79%).
The month with the lowest relative humidity is August (47%).
Average rainfall in August
Grass Range, MT
- Average rainfall in August: 1.34"
The wettest month (with the highest rainfall) is May (3.39").
The driest month (with the least rainfall) is December (0.71").
Average rainfall days in August
Grass Range, MT
- Average rainfall days in August: 10.5 days
The month with the highest number of rainy days is May (19.3 days).
The month with the least rainy days is January (5.4 days).
Average snowfall in August
Grass Range, MT
- Average snowfall in August: 0"
The month with the highest snowfall is April (9.13").
The months with the least snowfall are July and August (0").
Average snowfall days in August
Grass Range, MT
- Average snowfall days in August: 0 days
The month with the highest number of snowfall days is February (15.2 days).
The months with the least snowfall days are July and August (0 days).
Average daylight in August /
Average sunshine in August
Grass Range, MT
- Average daylight in August: 14h and 12min
The month with the longest days is June (Average daylight: 15h and 48min).
The month with the shortest days is December (Average daylight: 8h and 36min).
- Average sunshine in August: 11h and 24min
The month with the most sunshine is July (Average sunshine: 11h and 48min).
The month with the least sunshine is February (Average sunshine: 5h and 30min).
Average sunshine days in August
Grass Range, MT
- Average sunshine days in August: 17.2 days
The month with the most sunshine days is September (19.3 days).
The month with the least sunshine days is April (8.3 days).
Average UV index in August
Grass Range, MT
- 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, October, November and December (UV index 2).
Average cloud cover in August
Grass Range, MT
- Average cloud cover in August: 17
The month with the most cloud cover is February (Cloud cover 45).
The month with the least cloud cover is July (Cloud cover 16).
Average visibility in August
Grass Range, MT
- 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).
