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 advent of August brings an average high-temperature of a still warm 79.9°F (26.6°C), exhibiting minor difference from the previous month. Shelby sees a major change from daytime highs, with the nighttime temperature dipping to a refreshing 58.3°F (14.6°C) on average during August.Humidity
The least humid month is August, with an average relative humidity of 40%.Rainfall
In Shelby, in August, it is raining for 6.9 days, with typically 0.59" (15mm) of accumulated precipitation. In Shelby, during the entire year, the rain falls for 84.2 days and collects up to 9.29" (236mm) of precipitation.Snowfall
June through August are months without snowfall.Daylight
In August, the average length of the day is 14h and 17min.On the first day of the month, sunrise is at 6:03 am and sunset at 9:04 pm. On the last day of August, sunrise is at 6:44 am and sunset at 8:10 pm MDT.
Sunshine
In Shelby, the average sunshine in August is 11.3h.UV index
The average daily maximum UV index in August is 5. A UV Index of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV rays for ordinary individuals.Note: The maximum daily UV index of 5 in August converts into the following recommendations:
Ensure safety - Imperative it is to shield skin and eyes from damage. Avoiding the Sun during its peak radiation time around midday is a healthy practice. Employ a wide-brim hat for potent defense against up to 50% of UV rays.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the usual temperature for Shelby in August?
What is the least humid month?
What is the average humidity in August?
How much does it rain in Shelby in August?
When it does not snow?
Does it snow in August?
What is the average length of the day in August?
When is the sunrise / sunset in August?
How many hours of sunshine does Shelby have in August?
How high is the UV index in August?
Average temperature in August
Shelby, MT
- Average high temperature in August: 79.9°F
The warmest month (with the highest average high temperature) is July (80.8°F).
The month with the lowest average high temperature is December (27.7°F).
- Average low temperature in August: 58.3°F
The month with the highest average low temperature is August (58.3°F).
The coldest month (with the lowest average low temperature) is December (15.4°F).
Average pressure in August
Shelby, MT
- Average pressure in August: 29.91"Hg
The month with the highest atmospheric pressure is January (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.86"Hg).
Average wind speed in August
Shelby, MT
- Average wind speed in August: 8.7mph
The windiest month (with the highest average wind speed) is April (11mph).
The calmest month (with the lowest average wind speed) is August (8.7mph).
Average humidity in August
Shelby, MT
- Average humidity in August: 40%
The month with the highest relative humidity is January (80%).
The month with the lowest relative humidity is August (40%).
Average rainfall in August
Shelby, MT
- Average rainfall in August: 0.59"
The wettest month (with the highest rainfall) is June (2.01").
The driest months (with the least rainfall) are January and December (0.39").
Average rainfall days in August
Shelby, MT
- Average rainfall days in August: 6.9 days
The month with the highest number of rainy days is May (13.9 days).
The month with the least rainy days is February (3.1 days).
Average snowfall in August
Shelby, MT
- Average snowfall in August: 0"
The month with the highest snowfall is February (4.17").
The months with the least snowfall are June, July and August (0").
Average snowfall days in August
Shelby, MT
- Average snowfall days in August: 0 days
The month with the highest number of snowfall days is February (10.3 days).
The months with the least snowfall days are July and August (0 days).
Average daylight in August /
Average sunshine in August
Shelby, MT
- Average daylight in August: 14h and 2min
The month with the longest days is June (Average daylight: 16h and 6min).
The month with the shortest days is December (Average daylight: 8h and 24min).
- Average sunshine in August: 11h and 2min
The month with the most sunshine is July (Average sunshine: 11h and 54min).
The month with the least sunshine is January (Average sunshine: 5h and 24min).
Average sunshine days in August
Shelby, MT
- Average sunshine days in August: 22 days
The month with the most sunshine days is September (22.2 days).
The month with the least sunshine days is April (14.7 days).
Average UV index in August
Shelby, 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
Shelby, MT
- Average cloud cover in August: 17
The month with the most cloud cover is February (Cloud cover 46).
The month with the least cloud cover is July (Cloud cover 15).
Average visibility in August
Shelby, 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).
Shelby, Montana, USA
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