Missoula (MT)
May
Weather in Missoula, Montana for May 2026
Your guide to Missoula weather in May - trends and predictions
In general, the average temperature in Missoula at the beginning of May is 19.1 °F. As the month progressed, temperatures tended to significantly warm up, reaching an average of 25.9 °F by the end of May.
With an average of 5 rainy days, Missoula experiences minimal rainfall in May.
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Temperatures
Rain 🌧️
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26
Dry days
5
Rainy days
0
Snow days
19°/7°
Temperatures
12 km/h
Avg max wind
54 %
Avg humidity
Missoula Weather May
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Temperatures trend during May in Missoula
See the weather trend as well as the moving average line
May weather in Missoula day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| May 1 |  Sunny | 19° /2° | 0 mm | 5 | |
| May 2 | Sunny | 24° /4° | 0 mm | 6 | |
| May 3 | Sunny | 25° /8° | 0 mm | 7 | |
| May 4 |  Patchy rain possible | 12° /6° | 0.3 mm | 3 | |
| May 5 | Patchy rain possible | 13° /5° | 1 mm | 3 | |
| May 6 | Sunny | 18° /0° | 0 mm | 5 | |
| May 7 |  Partly cloudy | 23° /2° | 0 mm | 6 | |
| May 8 |  Overcast | 20° /9° | 0 mm | 5 | |
| May 9 | Overcast | 24° /6° | 0 mm | 5 | |
| May 10 | Patchy rain possible | 27° /10° | 0.3 mm | 6 | |
| May 11 | Patchy rain possible | 22° /10° | 0.4 mm | 5 | |
| May 12 |  Moderate or heavy rain shower | 13° /8° | 3.5 mm | 3 | |
| May 13 | Patchy rain possible | 14° /6° | 0.2 mm | 3 | |
| May 14 | Moderate rain at times | 11° /6° | 2.3 mm | 3 | |
| May 15 | Patchy rain possible | 12° /6° | 0.8 mm | 3 | |
| May 16 | Patchy rain possible | 13° /3° | 0.9 mm | 3 | |
| May 17 | Overcast | 17° /6° | 0 mm | 4 | |
| May 18 |  Heavy rain at times | 10° /5° | 5.4 mm | 3 | |
| May 19 |  Cloudy | 14° /2° | 0 mm | 3 | |
| May 20 | Patchy rain possible | 12° /5° | 2.9 mm | 3 | |
| May 21 | Patchy rain possible | 14° /4° | 0.7 mm | 3 | |
| May 22 | Patchy rain possible | 16° /5° | 0.1 mm | 4 | |
| May 23 | Patchy rain possible | 16° /6° | 0.1 mm | 4 | |
| May 24 | Sunny | 21° /6° | 0 mm | 6 | |
| May 25 | Sunny | 26° /8° | 0 mm | 7 | |
| May 26 |  Thundery outbreaks possible | 23° /11° | 0 mm | 5 | |
| May 27 | Partly cloudy | 21° /11° | 0 mm | 6 | |
| May 28 | Overcast | 26° /10° | 0 mm | 6 | |
| May 29 | Thundery outbreaks possible | 28° /13° | 0 mm | 6 | |
| May 30 | Partly cloudy | 25° /13° | 0 mm | 7 | |
| May 31 | Sunny | 32° /13° | 0 mm | 8 | |
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Important Notice
Our weather forecast for Missoula in May is based on the analysis of historical data rather than real-time forecast models. While this provides a general overview, weather conditions can change. We recommend that you check the Missoula forecast closer to your planned date for the most up-to-date weather information.
Change Month
Missoula in May - FAQ
What are the expected maximum and minimum temperatures in Missoula during May?
Enjoy moderate daytime temperatures of up to 19° and cooler nights around 7°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in Missoula during May?
Expect minimal rainfall in Missoula during May, with a total of 18.9 mm over approximately 5 days. This minimal precipitation is unlikely to significantly impact plans.
What are the typical wind conditions in Missoula during May?
The average wind speed in Missoula during May is 12 km/h, suggesting breezy to windy conditions, depending on your activities.
May rainfall patterns in Missoula
Explore the daily rainfall trends and prepare for Missoulas May weather 💧
UV exposure in Missoula during May
Stay informed about UV levels for safe outdoor activities throughout the month of May ☀️
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