Philipsburg Weather in September

What's the weather like in Philipsburg (Montana) in September 2025?

The climate in Philipsburg during September can be summarized as mild and reasonably dry.

September is in the fall / autumn in Philipsburg and is typically the 4th warmest month of the year. Daytime maximum temperatures average around a cool 19°C (66°F), whilst at night 2°C (35°F) is normal.

Philipsburg weather averages (imperial / metric)
Daytime temperature 19.1°C 66.3°F
Nightly temperature 1.6°C 34.8°F
Average temperature 10.3°C 50.5°F
Daily sunshine 9.1 hrs
Avg rainfall 34 mm 1.3 ins
Rainy days 9 days
Sea temperature 13.6°C 56.5°F
Humidity 58%
Windspeed 13.3kph 8 mph

On average September is the 4th wettest month of the year in Philipsburg with around 34mm 1.3 inches of rain making it a reasonably dry time to visit. This rainfall is typically spread over 9 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 Philipsburg

Philipsburg average temperature in September

September rainfall

Philipsburg average rain in September

September hourly sunshine

Philipsburg average rain in September

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 Philipsburg in September 2025.

Other monthly averages

Best places to visit in September

UV index Best time to go?

Beta

Current (hourly) weather 15 day forecast

Philipsburg weather stats

Philipsburg weather statistics
Hottest month: July 25.5°C 77.9°F
Driest month: February 18mm 0.7ins
Sunniest month: July 12.6hrs
Coldest month: January -1.1°C 30°F
Wettest month: June 59mm 2.3ins
Map showing location of Philipsburg (46.33215, -113.29423) Philipsburg map pin © Google

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