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
Joliet starts August with an average high-temperature of a still warm 81.1°F (27.3°C), hinting at a minimal fluctuation from July. Joliet's average nighttime temperature descends significantly from the day's peak in August, settling at a refreshing 57.2°F (14°C).Heat index
In August, the heat index is estimated at 80.6°F (27°C). Uninterrupted activity during exposure could lead to a sense of exhaustion, possibly causing heat cramps.Evaluating the heat index requires understanding its values in the shade and with gentle winds. Under direct sunshine, the heat index values might be elevated by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'felt air temperature', is a measure that combines air temperature and relative humidity into a single value that indicates how hot the weather feels. The influence of weather can be personal, changing with an individual's body mass, height, and level of physical exertion. Understand that direct sun rays can influence the weather's impact, leading to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially vital to children. Juveniles are regularly less conscious of the need to recuperate and rehydrate. Thirst is a tardy symptom of dehydration - hydration, especially during lengthy physical activities, should be maintained.
Humidity
August is the least humid month, with an average relative humidity of 41%.Rainfall
In Joliet, during August, the rain falls for 10.8 days and regularly aggregates up to 0.75" (19mm) of precipitation. Throughout the year, there are 108.1 rainfall days, and 12.83" (326mm) of precipitation is accumulated.Snowfall
July and August are months without snowfall.Daylight
The average length of the day in August is 14h and 3min.On the first day of the month, sunrise is at 6:00 am and sunset at 8:43 pm. On the last day of August, sunrise is at 6:37 am and sunset at 7:54 pm MDT.
Sunshine
The average sunshine in August is 11.7h.UV index
In August, the average daily maximum UV index is 5. A UV Index estimate of 3 to 5 represents a moderate health risk from unsafe exposure to UV radiation for the ordinary person.Note: The maximum UV index of 5 during August leads to these instructions:
Be mindful. Individuals with a lighter skin tone may suffer burns in less than 30 minutes. The solar radiation around mid-day is intense; avoid the Sun and stay safe. 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?
How many days does it rain in August?
When it does not snow?
Does it snow in August?
What is the average length of the day in August?
What time are sunrise and sunset in August?
How many hours of sunshine does Joliet have in August?
What is the UV index intensity in August?
Average temperature in August
Joliet, MT
- Average high temperature in August: 81.1°F
The warmest month (with the highest average high temperature) is July (82.9°F).
The month with the lowest average high temperature is December (30.7°F).
- Average low temperature in August: 57.2°F
The months with the highest average low temperature are July and August (57.2°F).
The coldest month (with the lowest average low temperature) is February (16.7°F).
Average pressure in August
Joliet, MT
- Average pressure in August: 29.94"Hg
The months with the highest atmospheric pressure are January and December (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.88"Hg).
Average wind speed in August
Joliet, MT
- Average wind speed in August: 6mph
The windiest month (with the highest average wind speed) is January (8.7mph).
The calmest month (with the lowest average wind speed) is August (6mph).
Average humidity in August
Joliet, MT
- Average humidity in August: 41%
The month with the highest relative humidity is January (76%).
The month with the lowest relative humidity is August (41%).
Average rainfall in August
Joliet, MT
- Average rainfall in August: 0.75"
The wettest month (with the highest rainfall) is May (2.09").
The driest month (with the least rainfall) is January (0.51").
Average rainfall days in August
Joliet, MT
- Average rainfall days in August: 10.8 days
The month with the highest number of rainy days is May (16.3 days).
The month with the least rainy days is February (4 days).
Average snowfall in August
Joliet, MT
- Average snowfall in August: 0"
The month with the highest snowfall is February (6.81").
The months with the least snowfall are July and August (0").
Average snowfall days in August
Joliet, MT
- Average snowfall days in August: 0 days
The month with the highest number of snowfall days is February (10.8 days).
The months with the least snowfall days are July and August (0 days).
Average daylight in August /
Average sunshine in August
Joliet, MT
- Average daylight in August: 14h and 1min
The month with the longest days is June (Average daylight: 15h and 36min).
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 54min).
The month with the least sunshine is February (Average sunshine: 6h and 12min).
Average sunshine days in August
Joliet, MT
- Average sunshine days in August: 12.3 days
The month with the most sunshine days is December (19.7 days).
The month with the least sunshine days is May (10.5 days).
Average UV index in August
Joliet, 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, November and December (UV index 2).
Average cloud cover in August
Joliet, MT
- Average cloud cover in August: 15
The month with the most cloud cover is February (Cloud cover 38).
The months with the least cloud cover are July and August (Cloud cover 15).
Average visibility in August
Joliet, 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).
Joliet, Montana, USA
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