Helena Weather in May

What's the weather like in Helena (Montana) in May 2024?

The climate in Helena during May can be summarized as mild and reasonably dry.

May is in the spring in Helena and is typically the 5th warmest month of the year. Daytime maximum temperatures average around a cool 18°C (64°F), whilst at night 3°C (38°F) is normal.

Helena weather averages (imperial / metric)
Daytime temperature 17.6°C 63.7°F
Nightly temperature 3.2°C 37.8°F
Average temperature 10.4°C 50.7°F
Daily sunshine 9.6 hrs
Avg rainfall 51 mm 2 ins
Rainy days 11 days
Sea temperature 9.2°C 48.5°F
Humidity 55%
Windspeed 15.8kph 10 mph

On average May is the 2nd wettest month of the year in Helena with around 51mm 2 inches of rain making it a reasonably dry time to visit. This rainfall is typically spread over 11 days, although this may vary considerably.

On the flip side this corresponds to an average of 9.6 hours of sunshine per day.

May temperatures in Helena

Helena average temperature in May

May rainfall

Helena average rain in May

May hourly sunshine

Helena average rain in May

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 in May 2024.

Other monthly averages

Best places to visit in May

UV index Best time to go?

Beta

Current (hourly) weather 15 day forecast

Helena weather stats

Helena weather statistics
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
Map showing location of Helena (46.59271, -112.03611) Helena map pin © Google

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