Helena Valley West Central Weather in September
What's the weather like in Helena Valley West Central (Montana) in September 2024?
The climate in Helena Valley West Central during September can be summarized as mild and dry.
September is in the fall / autumn in Helena Valley West Central and is typically the 4th warmest month of the year. Daytime maximum temperatures average around a cool 20°C (69°F), whilst at night 4°C (39°F) is normal.
| Daytime temperature | 20.4°C 68.6°F |
|---|---|
| Nightly temperature | 4.1°C 39.3°F |
| Average temperature | 12.2°C 54°F |
| Daily sunshine | 9.1 hrs |
| Avg rainfall | 30 mm 1.2 ins |
| Rainy days | 8 days |
| Sea temperature | 13.7°C 56.7°F |
| Humidity | 55% |
| Windspeed | 13.7kph 9 mph |
On average September is the 5th wettest month of the year in Helena Valley West Central with around 30mm 1.2 inches of rain making it a dry time to visit. This rainfall is typically spread over 8 days, although this may vary considerably.
On the flip side this corresponds to an average of 9.1 hours of sunshine per day.
September temperatures in Helena Valley West Central
September rainfall
September hourly sunshine
The data used in these monthly averages covers a period of over 100 years right up until last year. As such they are a valid prediction of what to expect for the weather in Helena Valley West Central in September 2024.
Other monthly averages
Best places to visit in September
Helena Valley West Central weather stats
| Hottest month: | July | 27.9°C 82.2°F |
|---|---|---|
| Driest month: | February | 12mm 0.5ins |
| Sunniest month: | July | 12.8hrs |
| Coldest month: | January | -1.3°C 29.7°F |
| Wettest month: | June | 55mm 2.2ins |
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