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 records an average high-temperature of a still moderately hot 82.8°F (28.2°C), almost echoing the conditions of the previous month. Roundup encounters an average low-temperature of 61.5°F (16.4°C) during August nights.Humidity
The least humid month in Roundup, Montana, is August, with an average relative humidity of 39%.Rainfall
In Roundup, during August, the rain falls for 10.6 days and regularly aggregates up to 0.98" (25mm) of precipitation. Throughout the year, there are 114.3 rainfall days, and 12.13" (308mm) of precipitation is accumulated.Snowfall
June through August are months without snowfall.Daylight
In August, the average length of the day is 14h and 7min.On the first day of the month, sunrise is at 5:56 am and sunset at 8:44 pm. On the last day of August, in Roundup, sunrise is at 6:34 am and sunset at 7:54 pm MDT.
Sunshine
In August, the average sunshine in Roundup is 11.5h.UV index
The average daily maximum UV index in August in Roundup is 6. A UV Index reading of 6 to 7 represents a high threat to health from unprotected exposure to Sun's UV rays for the average person.Note: The maximum UV index of 6 during August translates into these guidelines:
Prevent overexposure. Protection from the sun's harmful effects is needed. UV radiation from the Sun is most intense between 10 a.m. and 4 p.m. Try to avoid direct sunlight during this period. For excellent sun protection for the eyes, ears, face, and neck, consider a wide-brim hat.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How hot is it in Roundup in August?
What is the least humid month in Roundup?
What is the average humidity in August in Roundup?
How many days does it rain in August in Roundup?
When it does not snow in Roundup?
Does it snow in Roundup in August?
How many hours of daylight does Roundup have in August?
When is the sunrise / sunset in August in Roundup?
How long on average sun shines in August in Roundup?
What is the UV index intensity in August in Roundup?
Average temperature in August
Roundup, MT
- Average high temperature in August: 82.8°F
The warmest month (with the highest average high temperature) is July (84.7°F).
The month with the lowest average high temperature is December (31.1°F).
- Average low temperature in August: 61.5°F
The month with the highest average low temperature is July (62.4°F).
The coldest month (with the lowest average low temperature) is February (18°F).
Average pressure in August
Roundup, MT
- Average pressure in August: 29.89"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
Roundup, MT
- Average wind speed in August: 8.5mph
The windiest month (with the highest average wind speed) is January (11.2mph).
The calmest months (with the lowest average wind speed) are July and August (8.5mph).
Average humidity in August
Roundup, MT
- Average humidity in August: 39%
The month with the highest relative humidity is January (77%).
The month with the lowest relative humidity is August (39%).
Average rainfall in August
Roundup, MT
- Average rainfall in August: 0.98"
The wettest month (with the highest rainfall) is May (1.97").
The driest month (with the least rainfall) is January (0.55").
Average rainfall days in August
Roundup, MT
- Average rainfall days in August: 10.6 days
The month with the highest number of rainy days is May (15.6 days).
The month with the least rainy days is February (4.6 days).
Average snowfall in August
Roundup, MT
- Average snowfall in August: 0"
The month with the highest snowfall is February (3.78").
The months with the least snowfall are June, July and August (0").
Average snowfall days in August
Roundup, MT
- Average snowfall days in August: 0 days
The month with the highest number of snowfall days is February (11.1 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in August /
Average sunshine in August
Roundup, MT
- Average daylight in August: 14h and 1min
The month with the longest days is June (Average daylight: 15h and 48min).
The month with the shortest days is December (Average daylight: 8h and 42min).
- Average sunshine in August: 11h and 3min
The month with the most sunshine is July (Average sunshine: 11h and 48min).
The months with the least sunshine are February and December (Average sunshine: 5h and 12min).
Average sunshine days in August
Roundup, MT
- Average sunshine days in August: 15.8 days
The month with the most sunshine days is September (19.5 days).
The month with the least sunshine days is April (12.8 days).
Average UV index in August
Roundup, MT
- Average UV index in August: 6
The month with the highest UV index is July (UV index 7).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in August
Roundup, MT
- Average cloud cover in August: 16
The month with the most cloud cover is February (Cloud cover 47).
The months with the least cloud cover are July and August (Cloud cover 16).
Average visibility in August
Roundup, 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).
Roundup, Montana, USA
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