United StatesThe weather in August in Great Falls
It's warm in August in Great Falls with an average temperature of 28°C. Temperatures this month range from a low of 24°C to a high of 34°C. At night, you can expect temperatures between 10°C and 16°C.
Looking for great weather? August is a good time to be in Great Falls. The temperatures are nice, and there’s not too much rain.
Average temperatures and precipitation
This chart shows the average daily maximum and minimum temperatures (in degrees Celsius) and precipitation (in millimeters) in August for Great Falls, Montana. A low precipitation value usually indicates little to no rainfall on that day in recent years, while a higher value suggests more frequent rainfall.
Temperature records
With 39°C in 2018, Great Falls reached the highest temperature in August over the past 10 years. The lowest daytime temperature in this month was 8°C in 2021. The extreme nighttime temperatures ranged from a lowest recorded value of 2°C to a highest value of 22°C.
Rainfall amount
In August, there is an average of 51 mm of precipitation, spread over 7 days. The wind speed is around 4 Bft, mostly coming from the Southwest.
Daily weather in August for Great Falls
Click on any day in August to get detailed info about the usual weather on that day in Great Falls. Check out the historical temperatures and precipitation over the past 10 years on this day.
August weather comparison
| Great Falls | New York | |
|---|---|---|
| Average temperature | 28°C | 30°C |
| Max. temperature | 34°C | 31°C |
| Min. temperature | 10°C | -5°C |
| Total precipitation | 51 mm | 79 mm |
| Rainy days | 7 days | 13 days |
Start of August
The month of August starts in Great Falls with hot temps, averaging around 31°C during the day and nights around 14°C.
Mid August
By mid-August, daytime temps drop to around 29°C, with nights around 14°C. Not much precipitation expected during this period. It’s mostly dry and sunny.
End of August
By the end of August, the average daytime temperature in Great Falls is around 27°C, while nighttime temps are about 12°C. A shower might pop up, but overall, the weather will be dry and sunny.
Find affordable trips to Great Falls
UV index
The UV index is a maximum of 8 this month. That's a very high value on the intensity scale of 1 to 11. Unprotected skin can burn within 10-15 minutes.
Check out the climate of Great Falls for all months and discover the best travel time
Temperature charts
These charts show the average temperatures in August in Great Falls, Montana. The temperatures are shown in degrees Celsius and are calculated based on data from the past 10 years.
Daily Temperature in August in Great Falls
Temperature in August in Great Falls over the years
Precipitation charts
These charts show the average amount of precipitation in August in Great Falls, Montana. Precipitation is always measured as water, even when it falls as snow or hail The amount of precipitation is displayed in millimeters, while snowfall is shown in centimeters.
Daily Precipitation in August in Great Falls
Total precipitation in August in Great Falls over the years
Daily UV index in August in Great Falls
This chart shows the average daily UV index in August in Great Falls, with the UV index ranging from 0 to a maximum of 11. The bottom of the chart shows the days of the month. Based on historical data, this chart provides an idea of the daily UV radiation levels you can expect.
Weather experiences in August in Great Falls
Have you been to Great Falls in August?
Share your weather experience in August in Great Falls.
Average weather in Great Falls by month
Click on a month below to see detailed weather info for Great Falls. Based on historical weather data, you can see the average temperature, precipitation, wind, and UV index for each day of the month.