Contents
- Weather in August
- Frequently asked questions
- Average temperature in August
- Average pressure in August
- Average wind speed in August
- Average humidity in August
- Average rainfall in August
- Average rainfall days in August
- Average snowfall in August
- Average snowfall days in August
- Average daylight in August
- Average sunshine in August
- Average sunshine days in August
- Average UV index in August
- Average cloud cover in August
- Average visibility in August
Weather in August
Temperature
Shifting into August, Grantsdale records an average high-temperature of a still moderately hot 76.3°F (24.6°C), presenting minor fluctuations compared to the previous month. August's nights exhibit a sharp contrast from day highs, with an average temperature of 46.9°F (8.3°C).Humidity
August is the least humid month in Grantsdale, with an average relative humidity of 50%.Rainfall
August is the month with the least rainfall. Rain falls for 8.7 days and accumulates 0.75" (19mm) of precipitation.Snowfall
June through August are months without snowfall.Daylight
In Grantsdale, the average length of the day in August is 14h and 6min.On the first day of August, sunrise is at 6:19 am and sunset at 9:06 pm. On the last day of the month, sunrise is at 6:56 am and sunset at 8:16 pm MDT.
Sunshine
July and August, with an average of 11.7h of sunshine, are months with the most sunshine.UV index
The average daily maximum UV index in August is 4. A UV Index value of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV rays for the ordinary person.Note: An average maximum UV index of 4 in August leads to these recommendations:
Take precautions - Protection against skin and eye damage is obliged. The best time to avoid the Sun's harmful UV radiation is during midday when it's most potent. During bright days, sunglasses that offer UVA and UVB defense are recommended.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures in August?
What is the least humid month in Grantsdale?
What is the average humidity in August?
What is the driest month?
How much does it rain in August?
When it does not snow?
Does it snow in Grantsdale in August?
What is the average length of the day in August?
What time are sunrise and sunset in August?
What is the month with the most sunshine?
How long on average sun shines in August in Grantsdale?
How high is the UV index in August?
Average temperature in August
Grantsdale, MT
- Average high temperature in August: 76.3°F
The warmest month (with the highest average high temperature) is July (77°F).
The month with the lowest average high temperature is December (26.8°F).
- Average low temperature in August: 46.9°F
The month with the highest average low temperature is August (46.9°F).
The coldest month (with the lowest average low temperature) is December (14°F).
Average pressure in August
Grantsdale, MT
- Average pressure in August: 29.97"Hg
The month with the highest atmospheric pressure is January (30.21"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in August
Grantsdale, MT
- Average wind speed in August: 4.1mph
The windiest month (with the highest average wind speed) is January (5.3mph).
The calmest month (with the lowest average wind speed) is August (4.1mph).
Average humidity in August
Grantsdale, MT
- Average humidity in August: 50%
The month with the highest relative humidity is January (89%).
The month with the lowest relative humidity is August (50%).
Average rainfall in August
Grantsdale, MT
- Average rainfall in August: 0.75"
The wettest months (with the highest rainfall) are February and April (2.36").
The driest month (with the least rainfall) is August (0.75").
Average rainfall days in August
Grantsdale, MT
- Average rainfall days in August: 8.7 days
The month with the highest number of rainy days is May (19.5 days).
The month with the least rainy days is July (8 days).
Average snowfall in August
Grantsdale, MT
- Average snowfall in August: 0"
The month with the highest snowfall is February (13.03").
The months with the least snowfall are June, July and August (0").
Average snowfall days in August
Grantsdale, MT
- Average snowfall days in August: 0 days
The month with the highest number of snowfall days is February (19.3 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in August /
Average sunshine in August
Grantsdale, MT
- Average daylight in August: 14h and 1min
The month with the longest days is June (Average daylight: 15h and 42min).
The month with the shortest days is December (Average daylight: 8h and 42min).
- Average sunshine in August: 11h and 4min
The months with the most sunshine are July and August (Average sunshine: 11h and 42min).
The months with the least sunshine are January and December (Average sunshine: 5h and 24min).
Average sunshine days in August
Grantsdale, MT
- Average sunshine days in August: 17.4 days
The month with the most sunshine days is July (18.9 days).
The month with the least sunshine days is February (5.6 days).
Average UV index in August
Grantsdale, MT
- Average UV index in August: 4
The month with the highest UV index is July (UV index 5).
The months with the lowest UV index are February and December (UV index 1).
Average cloud cover in August
Grantsdale, MT
- Average cloud cover in August: 13
The month with the most cloud cover is February (Cloud cover 51).
The month with the least cloud cover is August (Cloud cover 13).
Average visibility in August
Grantsdale, MT
- Average visibility in August: 6mi
The months with the highest visibility are May, June, July, August, September and October (6mi).
The months with the lowest visibility are January, February, March and December (4mi).
Grantsdale, Montana, USA
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