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
August's advent notes a subtle adjustment in average high-temperature to a still warm 78.1°F (25.6°C) from July. Roy, amid August nights, sees a noteworthy disparity from daily highs with an average temperature of 54.5°F (12.5°C).Humidity
August is the least humid month in Roy, with an average relative humidity of 47%.Rainfall
In Roy, during August, the rain falls for 10.5 days and regularly aggregates up to 1.34" (34mm) of precipitation. Throughout the year, there are 126.2 rainfall days, and 17.83" (453mm) of precipitation is accumulated.Snowfall
In Roy, snow does not fall in July and August.Daylight
In August, the average length of the day is 14h and 11min.On the first day of the month, sunrise is at 5:55 am and sunset at 8:48 pm. On the last day of August, sunrise is at 6:34 am and sunset at 7:57 pm MDT.
Sunshine
The average sunshine in August in Roy is 11.4h.UV index
In Roy, the average daily maximum UV index in August is 5. A UV Index reading of 3 to 5 represents a medium health hazard from exposure to the Sun's UV rays for ordinary individuals.Note: The daily maximum UV index of 5 in August interprets into the following advice:
Take measures. Individuals with light skin might experience burns in under 30 minutes. It's recommended to limit sun exposure when its radiation is at its peak during midday. Enhance your sun protection with tightly woven, yet airy clothing.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the usual temperature for Roy in August?
What is the least humid month in Roy?
What is the average humidity in August in Roy?
How much does it rain in Roy in August?
When it does not snow in Roy?
Does it snow in Roy in August?
What is the average length of the day in August in Roy?
What time are sunrise and sunset in August in Roy?
How many hours of sunshine does Roy have in August?
What is the UV index reading in August in Roy?
Average temperature in August
Roy, MT
- Average high temperature in August: 78.1°F
The warmest month (with the highest average high temperature) is July (78.8°F).
The months with the lowest average high temperature are February and December (29.1°F).
- Average low temperature in August: 54.5°F
The month with the highest average low temperature is August (54.5°F).
The coldest month (with the lowest average low temperature) is February (15.3°F).
Average pressure in August
Roy, MT
- Average pressure in August: 29.9"Hg
The month with the highest atmospheric pressure is January (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.85"Hg).
Average wind speed in August
Roy, MT
- Average wind speed in August: 7.4mph
The windiest months (with the highest average wind speed) are January, April and October (9.9mph).
The calmest month (with the lowest average wind speed) is August (7.4mph).
Average humidity in August
Roy, MT
- Average humidity in August: 47%
The month with the highest relative humidity is February (79%).
The month with the lowest relative humidity is August (47%).
Average rainfall in August
Roy, MT
- Average rainfall in August: 1.34"
The wettest month (with the highest rainfall) is May (3.39").
The driest month (with the least rainfall) is December (0.71").
Average rainfall days in August
Roy, MT
- Average rainfall days in August: 10.5 days
The month with the highest number of rainy days is May (19.3 days).
The month with the least rainy days is January (5.4 days).
Average snowfall in August
Roy, MT
- Average snowfall in August: 0"
The month with the highest snowfall is April (9.13").
The months with the least snowfall are July and August (0").
Average snowfall days in August
Roy, MT
- Average snowfall days in August: 0 days
The month with the highest number of snowfall days is February (15.2 days).
The months with the least snowfall days are July and August (0 days).
Average daylight in August /
Average sunshine in August
Roy, MT
- Average daylight in August: 14h and 1min
The month with the longest days is June (Average daylight: 15h and 54min).
The month with the shortest days is December (Average daylight: 8h and 30min).
- Average sunshine in August: 11h and 2min
The month with the most sunshine is July (Average sunshine: 11h and 48min).
The month with the least sunshine is February (Average sunshine: 5h and 30min).
Average sunshine days in August
Roy, MT
- Average sunshine days in August: 17.2 days
The month with the most sunshine days is September (19.3 days).
The month with the least sunshine days is April (8.3 days).
Average UV index in August
Roy, 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, April, October, November and December (UV index 2).
Average cloud cover in August
Roy, MT
- Average cloud cover in August: 17
The month with the most cloud cover is February (Cloud cover 45).
The month with the least cloud cover is July (Cloud cover 16).
Average visibility in August
Roy, 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).
Roy, Montana, USA
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