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August Weather in Columbia Falls, United States

Last updated: June 24, 2025

In August, the average temperature in Columbia Falls, United States hovers around a pleasant 18°C (66°F). However, be prepared for a wide range, as temperatures can dip to a chilly 5°C (41°F) or soar up to a scorching 37°C (99°F). During this month, expect 27 mm (1.0 in) of precipitation spread over 4 days. The average humidity is a comfortable 69%, making this period a delightful time to experience the region.

August Temperature in Columbia Falls

In August in Columbia Falls, the average temperature is 18°C (66°F). The maximum can reach 37°C (99°F), and the minimum can be as low as 5°C (41°F). Be prepared for a range of temperatures, making it ideal for versatile travel plans.

August Weather in Columbia Falls: Daily Temperature Highs, Lows, and Averages

The chart illustrates August temperature patterns in Columbia Falls, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Columbia Falls, August typically has an average temperature of 18°C (66°F), with highs reaching up to 37°C (99°F) and lows dropping to around 5°C (41°F).
JanFebMarAprMayJunJulAugSepOctNovDec241932395058666555413328
Data source: Temperature data for Columbia Falls generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

August Precipitation in Columbia Falls

In Columbia Falls in August, the precipitation amount is 27 mm (1.0 in) over the course of 4 days.

August Precipitation Trends in Columbia Falls

The chart displays monthly precipitation patterns in Columbia Falls, with values for each month alongside August’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how August’s conditions compare to those of other months. In Columbia Falls, August typically receives around 27 mm (1.0 inches) of precipitation spread over approximately 4 days.
JanFebMarAprMayJunJulAugSepOctNovDec608761887167232750768281
Data source: Precipitation data for August generated using information from the Copernicus Climate Change Service.
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August Humidity in Columbia Falls

In Columbia Falls in August, humidity is 69%. With an average temperature of 18°C (66°F), this humidity feels like a warm mist wrapping around you, making travel pleasant yet slightly sticky, as the air embraces you while you explore the sights.

August Average Humidity in Columbia Falls

This chart illustrates the average monthly humidity levels in Columbia Falls, with August’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In August, average humidity in Columbia Falls is approximately 69%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec93%91%88%84%78%77%79%69%69%78%87%94%
Data source: Humidity data for August generated using information from the Copernicus Climate Change Service.

August UV Index in Columbia Falls

In Columbia Falls in August, the maximum UV index is 9, which corresponds to a very high Exposure Category. The time to burn is just 15 minutes, so it's essential to take precautions. For detailed information, you can check the Hourly UV Index in Columbia Falls.

Maximum UV Index Levels in Columbia Falls for August

The chart shows the monthly maximum UV Index (UVI) for Columbia Falls in August, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues. In August, the maximum UV index in Columbia Falls typically reaches 9, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec246799997532
Data source: Columbia Falls August UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

  •  Extreme (11+): Avoid the sun, stay in shade.
  •  Very High (8-10): Limit sun exposure.
  •  High (6-7): Use SPF 30+ and protective clothing.
  •  Moderate (3-5): Midday shade recommended.
  •  Low (0-2): No protection needed.

How August Weather in Columbia Falls Compares to Other Months

Weather in Columbia Falls varies notably across the year, with each month offering distinct climate conditions. This page compares August’s weather to other months in Columbia Falls, focusing on differences in temperature, rainfall, humidity, and UV levels.

This table compares monthly weather conditions in Columbia Falls, showing how August’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-4°C (24°F)60 mm (2.4 inches)93%low
February Weather-7°C (20°F)87 mm (3.4 inches)91%moderate
March Weather0°C (32°F)61 mm (2.4 inches)88%high
April Weather4°C (39°F)87 mm (3.4 inches)84%high
May Weather10°C (50°F)71 mm (2.8 inches)78%very high
June Weather15°C (59°F)67 mm (2.7 inches)77%very high
July Weather19°C (67°F)23 mm (0.9 inches)79%very high
August Weather18°C (66°F)27 mm (1.0 inches)69%very high
September Weather13°C (56°F)50 mm (2.0 inches)69%high
October Weather5°C (42°F)76 mm (3.0 inches)78%moderate
November Weather1°C (34°F)82 mm (3.2 inches)87%moderate
December Weather-2°C (28°F)81 mm (3.2 inches)94%low

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