Which is the hottest month in Great Falls?

The hottest time of year in Great Falls is normally July. Expect maximum daytime temperatures to reach 28°C with low heat and humidity.

Which month has the most rain in Great Falls?

In terms of rainfall, June is usually the wettest month in Great Falls with 71mm on average. There are normally 11 days in June with some rain.

When is it sunniest in Great Falls?

The sunniest time of year in Great Falls is normally July with bright sunshine on average for 79% of daylight hours; that's 12 hours of sunshine per day.

Best time to visit Great Falls

Q: When is the best time to visit Great Falls?

The best time to visit Great Falls is June, July and August based on the following average weather conditions. Maximum daytime temperature = 22 - 30°C. Daily hours of sunshine = 10 hours or more.

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Great Falls by month

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

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When is the best time to visit Great Falls?

The best time to visit Great Falls is June, July and August based on the following average weather conditions.

Maximum daytime temperature = 22 - 30°C [remove]
Daily hours of sunshine = 10 hours or more [remove]

Change the criteria to reflect your weather preferences.

0.5
Jan
1
Feb
2
Mar
2
Apr
3.5
May
5
Jun
5
Jul
5
Aug
4
Sep
1.5
Oct
0.5
Nov
0
Dec

Change criteria

Max Day Temperature (°C)

-2
Jan
3
Feb
6
Mar
13
Apr
18
May
23
Jun
28
Jul
28
Aug
21
Sep
15
Oct
7
Nov
0
Dec

Hours of Sunshine (daily)

4
Jan
5
Feb
8
Mar
8
Apr
9
May
11
Jun
12
Jul
11
Aug
8
Sep
6
Oct
4
Nov
3
Dec

Best time to visit

Destination

Daytime temperature

Sunshine hours

Sea temperature

Monthly rainfall

Days with some rain

Heat & humidity

The weather guide for Montana (Great Falls) shows long term weather averages processed from data supplied by CRU (University of East Anglia) & today's weather forecast provided by meteoblue. Find out more about our data sources.

Metric (°C / mm) | Imperial (°F / inches)