Roundup Weather in May

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

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

May is in the spring in Roundup and is typically the 5th warmest month of the year. Daytime maximum temperatures average around a cool 20°C (67°F), whilst at night 5°C (41°F) is normal.

Roundup weather averages (imperial / metric)
Daytime temperature 19.5°C 67°F
Nightly temperature 4.8°C 40.6°F
Average temperature 12.1°C 53.8°F
Daily sunshine 10 hrs
Avg rainfall 73 mm 2.9 ins
Rainy days 11 days
Sea temperature 9°C 48.3°F
Humidity 55%
Windspeed 18kph 11 mph

On average May is the wettest month of the year in Roundup with around 73mm 2.9 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 10 hours of sunshine per day.

May temperatures in Roundup

Roundup average temperature in May

May rainfall

Roundup average rain in May

May hourly sunshine

Roundup 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 Roundup 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

Roundup weather stats

Roundup weather statistics
Hottest month: July 29.5°C 85.1°F
Driest month: February 13mm 0.5ins
Sunniest month: July 12.7hrs
Coldest month: January -0.3°C 31.5°F
Wettest month: May 73mm 2.9ins
Map showing location of Roundup (46.44524, -108.5418) Roundup map pin © Google

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