August weather forecastBlackfoot, ID
August
Weather in August
Following the highest temperatures in July, August gradually tones down the heat in Blackfoot. The days remain long, but the city begins to experience a slight drop in temperatures. However, the absence of any snowfall in August is a clear indication of the prevalent summer season. Rainfall in August shows a slight increase, bringing some respite from July's dry spell and cooling down the atmosphere. As you prepare to say goodbye to the heated summer, August offers one final summer hurrah.Temperature
The transition from July to August sees average high-temperatures adjusting to a still warm 84.4°F (29.1°C), from a not significantly different 85.6°F (29.8°C). Blackfoot experiences a significant reduction from daytime highs with an average low-temperature of 55.9°F (13.3°C) in August.Humidity
August is the least humid month, with an average relative humidity of 34%.Rainfall
In Blackfoot, in August, during 8.1 rainfall days, 0.63" (16mm) of precipitation is typically accumulated. In Blackfoot, during the entire year, the rain falls for 120.8 days and collects up to 10.67" (271mm) of precipitation.Snowfall
June through August are months without snowfall.Daylight
In Blackfoot, the average length of the day in August is 13h and 53min.On the first day of August, sunrise is at 6:20 am and sunset at 8:50 pm. On the last day of the month, sunrise is at 6:53 am and sunset at 8:05 pm MDT.
Sunshine
In August, the average sunshine is 11.8h.UV index
In August, the average daily maximum UV index is 5. A UV Index value of 3 to 5 symbolizes a moderate threat to health from unsafe exposure to UV radiation for ordinary individuals.Note: A maximum daily UV index of 5 during August morphs into the following directions:
Take precautions - Protection against sun damage is advised. Avoiding direct sunlight during midday hours helps reduce the risk from intense UV radiation. Consider a wide-brim hat essential for effective sun defense covering your face, neck, and eyes.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in August
Blackfoot, ID
- Average high temperature in August: 84.4°F
The warmest month (with the highest average high temperature) is July (85.6°F).
The month with the lowest average high temperature is December (28.6°F).
- Average low temperature in August: 55.9°F
The month with the highest average low temperature is August (55.9°F).
The coldest month (with the lowest average low temperature) is January (16.2°F).
Average pressure in August
Blackfoot, ID
- Average pressure in August: 29.94"Hg
The month with the highest atmospheric pressure is January (30.3"Hg).
The month with the lowest atmospheric pressure is June (29.9"Hg).
Average wind speed in August
Blackfoot, ID
- Average wind speed in August: 7.1mph
The windiest month (with the highest average wind speed) is April (9.1mph).
The calmest month (with the lowest average wind speed) is January (6.3mph).
Average humidity in August
Blackfoot, ID
- Average humidity in August: 34%
The month with the highest relative humidity is January (88%).
The month with the lowest relative humidity is August (34%).
Average rainfall in August
Blackfoot, ID
- Average rainfall in August: 0.63"
The wettest month (with the highest rainfall) is March (1.22").
The driest month (with the least rainfall) is July (0.39").
Average rainfall days in August
Blackfoot, ID
- Average rainfall days in August: 8.1 days
The month with the highest number of rainy days is March (13.8 days).
The month with the least rainy days is July (7.3 days).
Average snowfall in August
Blackfoot, ID
- Average snowfall in August: 0"
The month with the highest snowfall is January (7.83").
The months with the least snowfall are June, July and August (0").
Average snowfall days in August
Blackfoot, ID
- Average snowfall days in August: 0 days
The month with the highest number of snowfall days is December (16.1 days).
The months with the least snowfall days are July and August (0 days).
Average daylight in August /
Average sunshine in August
Blackfoot, ID
- Average daylight in August: 13h and 54min
The month with the longest days is June (Average daylight: 15h and 18min).
The month with the shortest days is December (Average daylight: 9h and 0min).
- Average sunshine in August: 11h and 48min
The months with the most sunshine are June and July (Average sunshine: 11h and 54min).
The month with the least sunshine is January (Average sunshine: 5h and 6min).
Average sunshine days in August
Blackfoot, ID
- Average sunshine days in August: 18.3 days
The month with the most sunshine days is October (19.7 days).
The month with the least sunshine days is February (10.5 days).
Average UV index in August
Blackfoot, ID
- Average UV index in August: 5
The month with the highest UV index is July (UV index 6).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in August
Blackfoot, ID
- Average cloud cover in August: 11
The months with the most cloud cover are January and February (Cloud cover 47).
The months with the least cloud cover are July and August (Cloud cover 11).
Average visibility in August
Blackfoot, ID
- Average visibility in August: 6mi
The months with the highest visibility are March, April, May, June, July, August, September, October and November (6mi).
The month with the lowest visibility is January (4mi).





