Which is the hottest month in Helena?

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

Which month has the most rain in Helena?

In terms of rainfall, June is usually the wettest month in Helena with 55mm on average. There are normally 10 days in June with some rain.

When is it sunniest in Helena?

The sunniest time of year in Helena is normally July with bright sunshine on average for 77% of daylight hours; that's 12 hours of sunshine per day.

Best time to visit Helena

Q: When is the best time to visit Helena?

The best times to visit Helena, Montana are in June, July and August Maximum daytime temperature = 22 - 30°C. Daily hours of sunshine = 8 hours or more.

The best times to visit Helena, Montana are in June, July and August based on our default weather conditions. Update your weather preferences to see which months best match.

Helena 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 Helena?

The best times to visit Helena, Montana are in June, July and August based on the following average weather conditions.

Maximum daytime temperature = 22 - 30°C [remove]
Daily hours of sunshine = 8 hours or more [remove]

Change the criteria to reflect your weather preferences.

1.5
Jan
1.5
Feb
2.5
Mar
2.5
Apr
3.5
May
5
Jun
5
Jul
5
Aug
4
Sep
2
Oct
1.5
Nov
1
Dec

Change criteria

Max Day Temperature (°C)

-1
Jan
3
Feb
6
Mar
12
Apr
18
May
23
Jun
28
Jul
28
Aug
20
Sep
14
Oct
5
Nov
0
Dec

Hours of Sunshine (daily)

4
Jan
5
Feb
7
Mar
8
Apr
9
May
10
Jun
12
Jul
10
Aug
8
Sep
7
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 (Helena) 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)