August weather forecastLake McDonald, MT
August
Weather in August
August, the last month of the summer in Lake McDonald, is also a moderately hot month, with an average temperature fluctuating between 76.8°F (24.9°C) and 45.5°F (7.5°C).Temperature
During August, the average high-temperature is a still warm 76.8°F (24.9°C), maintaining a close resemblance to that of the preceding month. Despite soaring daytime temperatures, Lake McDonald registers a consistent average low-temperature of 45.5°F (7.5°C) in August.Humidity
August is the least humid month, with an average relative humidity of 55%.Rainfall
The month with the least rainfall is August, when the rain falls for 6.3 days and typically collects 0.43" (11mm) of precipitation.Snowfall
June through August are months without snowfall.Daylight
In Lake McDonald, the average length of the day in August is 14h and 17min.On the first day of the month, sunrise is at 6:11 am and sunset at 9:12 pm. On the last day of August, sunrise is at 6:52 am and sunset at 8:18 pm MDT.
Sunshine
In August, the average sunshine is 11.7h.UV index
The average daily maximum UV index in August is 4. A UV Index estimate of 3 to 5 represents a medium health hazard from unsafe exposure to UV radiation for the ordinary person.Note: The daily high UV index of 4 during August translates into the following recommendations:
Heed the precautions - It is counselled to guard against solar damage. The solar radiation around mid-day is intense; avoid the Sun and stay safe. Equip yourself with UVA and UVB-filtering sunglasses on clear, sunny days.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in August
Lake McDonald, 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
Lake McDonald, 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
Lake McDonald, 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
Lake McDonald, 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
Lake McDonald, 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
Lake McDonald, 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
Lake McDonald, 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
Lake McDonald, 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
Lake McDonald, MT
- Average daylight in August: 14h and 18min
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 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
Lake McDonald, 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
Lake McDonald, 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
Lake McDonald, 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
Lake McDonald, 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).
