August weather forecast and climate
Columbia Falls, MT

August, the last month of the summer, in Columbia Falls, is another warm month, with average temperature fluctuating between 76.8°F (24.9°C) and 45.5°F (7.5°C).

Temperature

In August, the average high-temperature is essentially the same as in July - a still moderately hot 76.8°F (24.9°C). In August, in Columbia Falls, the average low-temperature is 45.5°F (7.5°C).

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 Columbia Falls, the average length of the day is 14.3h.

Sunshine

In August, the average sunshine in Columbia Falls is 11.7h.

UV index

In August, the average daily maximum UV index is 4. A UV Index estimate of 3 to 5 represents a moderate threat to health from the exposure to the Sun's UV radiation for the ordinary person.
Note: The average daily UV index of 4 in August transform into the following instructions:
Take precautions - Protection against the skin and eye damage is obliged. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes.

What is the temperature in August in Columbia Falls?

In Columbia Falls, Montana, in August, the average high-temperature is 76.8°F (24.9°C), and the average low-temperature is 45.5°F (7.5°C).

What is the least humid month in Columbia Falls?

The least humid month in Columbia Falls, Montana, is August, with an average relative humidity of 55%.

What is the average humidity in August in Columbia Falls?

In August, the average relative humidity in Columbia Falls, Montana, is 55%.

How much does it rain in Columbia Falls in August?

In Columbia Falls, Montana, in August, during 6.3 rainfall days, 0.43" (11mm) of precipitation is typically accumulated.

What is the driest month in Columbia Falls?

August is the month with the least rainfall in Columbia Falls. Rain falls for 6.3 days and accumulates 0.43" (11mm) of precipitation.

Does it snow in Columbia Falls in August?

In Columbia Falls, in August, it doesn't snow. In September, it regularly snows.

When it does not snow in Columbia Falls?

In Columbia Falls, Montana, snow does not fall in June through August.

What is the average length of the day in August in Columbia Falls?

In August, the average length of the day in Columbia Falls, Montana, is 14.3h.

How long on average sun shines in August in Columbia Falls?

In August, the average sunshine in Columbia Falls, Montana, is 11.7h.

What is the UV index reading in August in Columbia Falls?

In Columbia Falls, the average daily maximum UV index in August is 4. A UV Index of 3 to 5 symbolizes a moderate health threat from unsafe exposure to the Sun's UV rays.
Average temperature in August - Columbia Falls, MT
  • Average high temperature in August: 24.9°C

The warmest month (with the highest average high temperature) is July (25.5°C).
The month with the lowest average high temperature is December (-3.5°C).

  • Average low temperature in August: 7.5°C

The month with the highest average low temperature is August (7.5°C).
The coldest month (with the lowest average low temperature) is February (-10.3°C).

Average pressure in August - Columbia Falls, MT
  • Average pressure in August: 1013.8mbar

The month with the highest atmospheric pressure is January (1021.4mbar).
The month with the lowest atmospheric pressure is June (1012.7mbar).

Average wind speed in August - Columbia Falls, MT
  • Average wind speed in August: 6km/h

The windiest month (with the highest average wind speed) is April (7.4km/h).
The calmest month (with the lowest average wind speed) is December (5.9km/h).

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: 11mm

The wettest month (with the highest rainfall) is June (36mm).
The driest month (with the least rainfall) is August (11mm).

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: 0mm

The month with the highest snowfall is January (196mm).
Months with the least snowfall are June, July and August (0mm).

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).
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: 14.3h

The month with the longest days is June (Average daylight: 16h).
The month with the shortest days is December (Average daylight: 8.4h).

  • Average sunshine in August: 11.7h

The month with the most sunshine is July (Average sunshine: 11.9h).
The month with the least sunshine is January (Average sunshine: 3.5h).

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).
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).
Months with the least cloud cover are July and August (Cloud cover 15).

Average visibility in August - Columbia Falls, MT
  • Average visibility in August: 10km

Months with the highest visibility are July and August (10km).
The month with the lowest visibility is January (5km).