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
The beginning of August reveals an average high-temperature of a still moderately hot 81.9°F (27.7°C), showing minimal deviation from the previous month. In August, Harrison experiences a significant drop from daily zeniths to an average nighttime temperature of 50.5°F (10.3°C).Heat index
Throughout August, the heat index is appraised at 82.4°F (28°C). Unrelenting activity during exposure could cause fatigue and potentially lead to heat cramps.Heat index determinations are made taking into account the shade and light air movements. The heat index could experience an increase of 15 Fahrenheit (8 Celsius) degrees due to direct sunlight.
Note: The heat index, also known as 'apparent temperature' or 'real feel', determines the feeling of heat when you account for the relative humidity. The effect is experienced differently by individuals, hinging on unique characteristics such as body mass, stature, and level of activity. Recognize that direct exposure to the sun can escalate the heat effect, potentially adding 15 Fahrenheit (8 Celsius) degrees to the heat index. Heat index values are especially vital to children. Young ones are generally more prone to risk than adults due to their reduced ability to sweat. Their large skin surface area relative to their diminutive bodies and elevated heat production from their activities further enhance this risk.
Humidity
August is the least humid month in Harrison, with an average relative humidity of 44%.Rainfall
The month with the least rainfall is August, when the rain falls for 7.6 days and typically collects 0.51" (13mm) of precipitation.Snowfall
In Harrison, snow does not fall in July and August.Daylight
In August, the average length of the day is 14h and 4min.On the first day of the month, sunrise is at 6:11 am and sunset at 8:55 pm. On the last day of August, sunrise is at 6:48 am and sunset at 8:06 pm MDT.
Sunshine
In August, the average sunshine is 11.7h.UV index
In August, the average daily maximum UV index is 5. A UV Index of 3 to 5 symbolizes a moderate health risk from unprotected exposure to Sun's UV rays for the ordinary person.Note: In August, the maximum UV index of 5 translates into these guidelines:
Preventative actions are necessary - Recommendations to ward off sunburn are given. Sun exposure should be minimized, especially during midday, to avoid harmful UV radiation. By wearing a generously brimmed hat, you can cut UV radiation exposure significantly.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are August temperatures?
What is the least humid month?
What is the average humidity in August?
What is the driest month?
How much does it rain in Harrison in August?
When it does not snow?
Does it snow in Harrison in August?
How many hours of daylight does Harrison have in August?
When is the sunrise / sunset in August?
How many hours of sunshine does Harrison have in August?
What is the UV index intensity in August?
Average temperature in August
Harrison, MT
- Average high temperature in August: 81.9°F
The warmest month (with the highest average high temperature) is July (83.5°F).
The month with the lowest average high temperature is December (28°F).
- Average low temperature in August: 50.5°F
The month with the highest average low temperature is August (50.5°F).
The coldest month (with the lowest average low temperature) is December (12.7°F).
Average pressure in August
Harrison, MT
- Average pressure in August: 29.96"Hg
The months with the highest atmospheric pressure are January and December (30.19"Hg).
The month with the lowest atmospheric pressure is June (29.9"Hg).
Average wind speed in August
Harrison, MT
- Average wind speed in August: 4.2mph
The windiest month (with the highest average wind speed) is April (5.5mph).
The calmest month (with the lowest average wind speed) is August (4.2mph).
Average humidity in August
Harrison, MT
- Average humidity in August: 44%
The month with the highest relative humidity is January (85%).
The month with the lowest relative humidity is August (44%).
Average rainfall in August
Harrison, MT
- Average rainfall in August: 0.51"
The wettest month (with the highest rainfall) is June (1.57").
The driest month (with the least rainfall) is August (0.51").
Average rainfall days in August
Harrison, MT
- Average rainfall days in August: 7.6 days
The month with the highest number of rainy days is April (16.5 days).
The month with the least rainy days is August (7.6 days).
Average snowfall in August
Harrison, MT
- Average snowfall in August: 0"
The month with the highest snowfall is February (6.02").
The months with the least snowfall are July and August (0").
Average snowfall days in August
Harrison, MT
- Average snowfall days in August: 0 days
The month with the highest number of snowfall days is February (16.5 days).
The months with the least snowfall days are July and August (0 days).
Average daylight in August /
Average sunshine in August
Harrison, 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 48min).
- Average sunshine in August: 11h and 4min
The month with the most sunshine is July (Average sunshine: 11h and 48min).
The month with the least sunshine is January (Average sunshine: 5h and 54min).
Average sunshine days in August
Harrison, MT
- Average sunshine days in August: 17.6 days
The month with the most sunshine days is September (18.7 days).
The month with the least sunshine days is April (9.3 days).
Average UV index in August
Harrison, MT
- 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
Harrison, MT
- Average cloud cover in August: 13
The month with the most cloud cover is February (Cloud cover 43).
The month with the least cloud cover is August (Cloud cover 13).
Average visibility in August
Harrison, MT
- 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).
Harrison, Montana, USA
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