August weather forecastColumbia Falls, MT
August
Weather in August
August in Columbia Falls retains the high temperature averages witnessed in July, providing a prolonged warm and sunny period for outdoor enjoyment. However, there is a slight dip in the average temperature high from 77.9°F (25.5°C) in July to 76.8°F (24.9°C). Despite shorter daylight hours compared to July, Columbia Falls still receives a substantial amount of sunshine during August. Rainfall is less likely in September and the days are projected to become shorter. Yet, the warm and sunny weather in August continues to make it a desirable moment for vacationers and residents to explore the city's magnificent outdoors.Temperature
Entering August, the average high-temperature is recorded at a still warm 76.8°F (24.9°C), exhibiting a minimal shift from July's 77.9°F (25.5°C). Columbia Falls's average low-temperature of 45.5°F (7.5°C) in August reflects a significant disparity from the daytime highs.Humidity
With an average relative humidity of 55%, August is the least humid month.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
In Columbia Falls, snow does not fall in June through August.Daylight
In August, the average length of the day is 14h and 16min.On the first day of the month, sunrise is at 6:12 am and sunset at 9:13 pm. On the last day of August, sunrise is at 6:54 am and sunset at 8:19 pm MDT.
Sunshine
The average sunshine in August is 11.7h.UV index
In August, the average daily maximum UV index is 4. A UV Index reading of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV radiation for average individuals.Note: The daily high UV index of 4 during August translates into the following recommendations:
Prioritize safety - Recommendations to avert sunburn are shared. Stay safe from the Sun's strongest UV rays by limiting exposure during midday. Using UVA and UVB-protective sunglasses and sun-protective clothing is effective against UV radiation.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in August
Columbia Falls, 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
Columbia Falls, 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
Columbia Falls, 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
Columbia Falls, 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
Columbia Falls, 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
Columbia Falls, 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
Columbia Falls, 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
Columbia Falls, 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
Columbia Falls, 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
Columbia Falls, 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
Columbia Falls, 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
Columbia Falls, 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
Columbia Falls, 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).
