Missoula Weather in May

The climate in Missoula during May can be summarized as cool and reasonably dry.

May is in the spring in Missoula and is typically the 5th warmest month of the year. Daytime maximum temperatures average around a cool 17°C (63°F), whilst at night 2°C (36°F) is normal.

On average May is the 2nd wettest month of the year in Missoula with around 53mm 2.1 inches of rain making it a reasonably dry time to visit. This rainfall is typically spread over 12 days, although this may vary considerably.

On the flip side this corresponds to an average of 9.4 hours of sunshine per day.

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 Missoula in May 2024.