August weather forecastSun River, MT
August
Weather in August
The last month of the summer, August, is another warm month in Sun River, Montana, with an average temperature fluctuating between 81.1°F (27.3°C) and 56.7°F (13.7°C).Temperature
The average high-temperature for August is a still warm 81.1°F (27.3°C), closely aligning with the temperature of the preceding month. In Sun River, the average temperature during the nights of August marks a significant drop from the daily high, settling at a moderate 56.7°F (13.7°C).Heat index
In August, the average heat index is estimated at 80.6°F (27°C). Persistently participating in activities during exposure may lead to fatigue and induce heat cramps.Heat index details are generally centered around shaded locations and a mild breeze. Exposure to the direct sun could elevate the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'real feel', is what the temperature feels like to the human body when the air temperature is combined with the relative humidity. The impact of weather on an individual can be subjective, affected by the person's activity and heat perception, which can vary due to elements including wind, clothing, and metabolic differences. When directly under the sun, the weather's impact can intensify, possibly boosting the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially vital to children. Children typically face more danger than adults as their sweat production is usually lower. Additionally, the bigger skin surface compared to their small size and the increased heat due to their activeness exacerbate the risk.
Humidity
The least humid month in Sun River is August, with an average relative humidity of 41%.Rainfall
In August, the rain falls for 8.8 days. Throughout August, 0.79" (20mm) of precipitation is accumulated. Throughout the year, in Sun River, there are 112.8 rainfall days, and 12.95" (329mm) of precipitation is accumulated.Snowfall
In Sun River, snow does not fall in June through August.Daylight
In August, the average length of the day is 14h and 12min.On the first day of August in Sun River, sunrise is at 6:05 am and sunset at 9:00 pm. On the last day of the month, sunrise is at 6:45 am and sunset at 8:08 pm MDT.
Sunshine
In Sun River, the average sunshine in August is 11.4h.UV index
The average daily maximum UV index in August is 5. A UV Index estimate of 3 to 5 represents a moderate threat to health from unprotected exposure to Sun's UV rays for ordinary individuals.Note: In August, the UV index of 5 transforms into the following advice:
Put precautions into practice - Ensuring skin and eye safety is a necessity. Avoiding direct sun during mid-day hours can prevent harmful UV radiation exposure. Loose clothes with a tight weave are optimal for safeguarding yourself against the Sun's rays.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in August
Sun River, MT
- Average high temperature in August: 81.1°F
The warmest month (with the highest average high temperature) is July (82.2°F).
The month with the lowest average high temperature is December (29.5°F).
- Average low temperature in August: 56.7°F
The month with the highest average low temperature is August (56.7°F).
The coldest month (with the lowest average low temperature) is December (17.4°F).
Average pressure in August
Sun River, MT
- Average pressure in August: 29.92"Hg
The months with the highest atmospheric pressure are January and December (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.87"Hg).
Average wind speed in August
Sun River, MT
- Average wind speed in August: 7.3mph
The windiest months (with the highest average wind speed) are January and November (10.7mph).
The calmest month (with the lowest average wind speed) is August (7.3mph).
Average humidity in August
Sun River, MT
- Average humidity in August: 41%
The month with the highest relative humidity is January (78%).
The month with the lowest relative humidity is August (41%).
Average rainfall in August
Sun River, MT
- Average rainfall in August: 0.79"
The wettest month (with the highest rainfall) is June (2.05").
The driest months (with the least rainfall) are January and July (0.63").
Average rainfall days in August
Sun River, MT
- Average rainfall days in August: 8.8 days
The month with the highest number of rainy days is May (15.2 days).
The month with the least rainy days is January (4.8 days).
Average snowfall in August
Sun River, MT
- Average snowfall in August: 0"
The month with the highest snowfall is February (6.34").
The months with the least snowfall are June, July and August (0").
Average snowfall days in August
Sun River, MT
- Average snowfall days in August: 0 days
The month with the highest number of snowfall days is February (14.4 days).
The months with the least snowfall days are July and August (0 days).
Average daylight in August /
Average sunshine in August
Sun River, 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 24min
The month with the most sunshine is July (Average sunshine: 11h and 54min).
The months with the least sunshine are January and December (Average sunshine: 5h and 24min).
Average sunshine days in August
Sun River, MT
- Average sunshine days in August: 18.2 days
The month with the most sunshine days is September (18.8 days).
The month with the least sunshine days is April (10.3 days).
Average UV index in August
Sun River, 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, October, November and December (UV index 2).
Average cloud cover in August
Sun River, MT
- Average cloud cover in August: 16
The month with the most cloud cover is February (Cloud cover 47).
The month with the least cloud cover is July (Cloud cover 14).
Average visibility in August
Sun River, 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).
