August weather forecastHeron, MT
August
Weather in August
August, the last month of the summer in Heron, is also a moderately hot month, with temperature in the range of an average low of 49.1°F (9.5°C) and an average high of 78.3°F (25.7°C).Temperature
August, recognised by an average high temperature of 78.3°F (25.7°C) and a low of 49.1°F (9.5°C), is Heron's warmest month.Humidity
With an average relative humidity of 52%, August is the least humid month.Rainfall
August is the month with the least rainfall. Rain falls for 6.9 days and accumulates 0.55" (14mm) of precipitation.Snowfall
June through August are months without snowfall in Heron, Montana.Daylight
In August, the average length of the day is 14h and 14min.On the first day of August in Heron, sunrise is at 6:21 am and sunset at 9:19 pm. On the last day of the month, sunrise is at 7:01 am and sunset at 8:26 pm MDT.
Sunshine
With an average of 11.8h of sunshine, August has the most sunshine of the year.UV index
In August, the average daily maximum UV index is 4. A UV Index estimate of 3 to 5 represents a moderate health risk from unprotected exposure to Sun's UV rays for average individuals.Note: In August, the maximum UV index of 4 translates into these guidelines:
Put precautions into practice - Protective measures against sun-induced damage are advised. Solar radiation peaks around mid-day, so it's wise to limit exposure to the Sun at this time. A hat with a generous brim can prevent nearly 50% of UV rays from reaching your eyes.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in August
Heron, MT
- Average high temperature in August: 78.3°F
The warmest month (with the highest average high temperature) is August (78.3°F).
The month with the lowest average high temperature is December (29.3°F).
- Average low temperature in August: 49.1°F
The month with the highest average low temperature is August (49.1°F).
The coldest month (with the lowest average low temperature) is December (18.7°F).
Average pressure in August
Heron, MT
- Average pressure in August: 29.92"Hg
The month with the highest atmospheric pressure is January (30.19"Hg).
The months with the lowest atmospheric pressure are June and August (29.92"Hg).
Average wind speed in August
Heron, MT
- Average wind speed in August: 3.9mph
The windiest month (with the highest average wind speed) is April (4.5mph).
The calmest month (with the lowest average wind speed) is December (3.5mph).
Average humidity in August
Heron, MT
- Average humidity in August: 52%
The month with the highest relative humidity is January (94%).
The month with the lowest relative humidity is August (52%).
Average rainfall in August
Heron, MT
- Average rainfall in August: 0.55"
The wettest month (with the highest rainfall) is December (3.66").
The driest month (with the least rainfall) is August (0.55").
Average rainfall days in August
Heron, MT
- Average rainfall days in August: 6.9 days
The month with the highest number of rainy days is April (19.3 days).
The month with the least rainy days is August (6.9 days).
Average snowfall in August
Heron, MT
- Average snowfall in August: 0"
The month with the highest snowfall is January (15.87").
The months with the least snowfall are June, July and August (0").
Average snowfall days in August
Heron, MT
- Average snowfall days in August: 0 days
The month with the highest number of snowfall days is December (19.5 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in August /
Average sunshine in August
Heron, MT
- Average daylight in August: 14h and 12min
The month with the longest days is June (Average daylight: 16h and 0min).
The month with the shortest days is December (Average daylight: 8h and 24min).
- Average sunshine in August: 11h and 48min
The month with the most sunshine is August (Average sunshine: 11h and 48min).
The month with the least sunshine is January (Average sunshine: 3h and 12min).
Average sunshine days in August
Heron, MT
- Average sunshine days in August: 20.8 days
The month with the most sunshine days is July (20.9 days).
The month with the least sunshine days is March (7.1 days).
Average UV index in August
Heron, 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 January, February, November and December (UV index 1).
Average cloud cover in August
Heron, MT
- Average cloud cover in August: 14
The month with the most cloud cover is January (Cloud cover 67).
The month with the least cloud cover is August (Cloud cover 14).
Average visibility in August
Heron, MT
- Average visibility in August: 6mi
The months with the highest visibility are May, June, July, August and September (6mi).
The months with the lowest visibility are January, February and December (3mi).
