August weather forecastHalfmoon, MT
August
Weather in August
The last month of the summer, August, is another warm month in Halfmoon, Montana, with an average temperature varying between 45.5°F (7.5°C) and 76.8°F (24.9°C).Temperature
In the transition from July to August, Halfmoon reports an average high-temperature of a still warm 76.8°F (24.9°C), indicating a close resemblance to the prior month. Nightly average temperatures in August reveal a significant dip from daytime highs, registering a consistent a frosty 45.5°F (7.5°C).Humidity
August is the least humid month, with an average relative humidity of 55%.Rainfall
August is the month with the least rainfall. Rain falls for 6.3 days and accumulates 0.43" (11mm) of precipitation.Snowfall
In Halfmoon, snow does not fall in June through August.Daylight
In Halfmoon, the average length of the day in August is 14h and 16min.On the first day of August, sunrise is at 6:13 am and sunset at 9:13 pm. On the last day of the month, sunrise is at 6:54 am and sunset at 8:19 pm MDT.
Sunshine
In Halfmoon, Montana, the average sunshine in August is 11.7h.UV index
In Halfmoon, the average daily maximum UV index in August is 4. A UV Index estimate of 3 to 5 represents a moderate threat to health from unprotected exposure to Sun's UV rays for ordinary individuals.Note: A maximum high UV index of 4 in August translates into the following recommendations:
Exercise prevention - Warding off sunburn is urged. To protect against the Sun's most potent rays, avoid direct exposure around midday. For holistic sun protection encompassing the eyes, ears, face, and neck, a wide-brim hat is key.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in August
Halfmoon, MT
- Average high temperature in August: 76.8°F
The warmest month (with the highest average high temperature) is July (77.9°F).
The month with the lowest average high temperature is December (25.7°F).
- Average low temperature in August: 45.5°F
The month with the highest average low temperature is August (45.5°F).
The coldest month (with the lowest average low temperature) is February (13.5°F).
Average pressure in August
Halfmoon, MT
- Average pressure in August: 29.94"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in August
Halfmoon, MT
- Average wind speed in August: 3.7mph
The windiest month (with the highest average wind speed) is April (4.6mph).
The calmest months (with the lowest average wind speed) are August and December (3.7mph).
Average humidity in August
Halfmoon, MT
- Average humidity in August: 55%
The month with the highest relative humidity is January (93%).
The month with the lowest relative humidity is August (55%).
Average rainfall in August
Halfmoon, MT
- Average rainfall in August: 0.43"
The wettest month (with the highest rainfall) is June (1.42").
The driest month (with the least rainfall) is August (0.43").
Average rainfall days in August
Halfmoon, MT
- Average rainfall days in August: 6.3 days
The month with the highest number of rainy days is April (15.8 days).
The month with the least rainy days is August (6.3 days).
Average snowfall in August
Halfmoon, MT
- Average snowfall in August: 0"
The month with the highest snowfall is January (7.72").
The months with the least snowfall are June, July and August (0").
Average snowfall days in August
Halfmoon, MT
- Average snowfall days in August: 0 days
The month with the highest number of snowfall days is December (19.1 days).
The months with the least snowfall days are July and August (0 days).
Average daylight in August /
Average sunshine in August
Halfmoon, MT
- Average daylight in August: 14h and 18min
The month with the longest days is June (Average daylight: 16h and 0min).
The month with the shortest days is December (Average daylight: 8h and 24min).
- Average sunshine in August: 11h and 42min
The month with the most sunshine is July (Average sunshine: 11h and 54min).
The month with the least sunshine is January (Average sunshine: 3h and 30min).
Average sunshine days in August
Halfmoon, MT
- Average sunshine days in August: 21.4 days
The month with the most sunshine days is July (21.5 days).
The month with the least sunshine days is March (7.7 days).
Average UV index in August
Halfmoon, MT
- Average UV index in August: 4
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 1).
Average cloud cover in August
Halfmoon, MT
- Average cloud cover in August: 15
The month with the most cloud cover is January (Cloud cover 65).
The months with the least cloud cover are July and August (Cloud cover 15).
Average visibility in August
Halfmoon, MT
- Average visibility in August: 6mi
The months with the highest visibility are May, June, July, August, September and October (6mi).
The month with the lowest visibility is January (3mi).
