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Weather in Montana for May 2027

Your guide to Montana weather in May - trends and predictions

    Snow Forecast ❄️

  • Snowfall in Montana during May is quite rare, with fewer than 2 snowy days on average.

    • Temperatures

  • In general, the average temperature in Montana at the beginning of May is 14.6 °C. As the month progressed, temperatures tended to significantly warm up, reaching an average of 21.3 °C by the end of May.

    • Rain 🌧️

  • The climate of Montana in May is notably wet, with an average of 11 rainy days, and a total of 49.6 mm of precipitation.

    • More

  • New! Chat with our AI weatherman - it’s amazing and free.

Average dry days
19
Dry days
Average rainy days
11
Rainy days
Average snowy days
1
Snow days
Average temperatures
17°/4°
Temperatures
Average wind speed
15 km/h
Avg max wind
Average humidity
60 %
Avg humidity

Montana Weather May

Move between months or click on a day
April
June
Mon.Tue.Wed.Thu.Fri.Sat.Sun.
1
Sunny
15°
2
Sunny
18°
3
Partly cloudy
19°
4
Moderate or heavy rain shower
14°
5
Moderate or heavy rain shower
7°
6
Cloudy
12°
7
Overcast
17°
8
Sunny
19°
9
Sunny
18°
10
Sunny
24°
11
Patchy rain possible
22°
12
Overcast
22°
13
Moderate rain at times
18°
14
Patchy rain possible
11°
15
Patchy rain possible
11°
16
Patchy rain possible
11°
17
Moderate or heavy rain shower
11°
18
Heavy rain at times
8°
19
Overcast
12°
20
Patchy rain possible
12°
21
Patchy rain possible
12°
22
Heavy rain at times
15°
23
Moderate rain at times
18°
24
Partly cloudy
20°
25
Mist
21°
26
Sunny
23°
27
Thundery outbreaks possible
21°
28
Sunny
24°
29
Partly cloudy
25°
30
Mist
16°
31
Sunny
19°

What’s the Weather Like in Montana This May?

Discover the average temperatures and weather trends across Montana’s cities this May.
Patchy rain possibleBozeman17 °C / 4 °CPatchy rain possibleGlacier National Park18 °C / 6 °CPatchy rain possibleBillings21 °C / 6 °CPatchy rain possibleMissoula20 °C / 6 °CPatchy rain possibleHelena19 °C / 4 °CPatchy rain possibleGreat Falls20 °C / 6 °CPatchy rain possibleButte16 °C / 2 °CMore Locations

Temperatures trend during May in Montana

See the weather trend as well as the moving average line

May weather in Montana day by day

Click on a date for more information
April June
Date Weather Temperatures Rain Snow More
May 1 Sunny
Sunny
 15° /1° 0 mm 0 cm
May 2 Sunny
Sunny
 18° /2° 0 mm 0 cm
May 3 Partly cloudy
Partly cloudy
 19° /5° 0 mm 0 cm
May 4 Moderate or heavy rain shower
Moderate or heavy rain shower
 14° /4° 4.8 mm 0 cm
May 5 Moderate or heavy rain shower
Moderate or heavy rain shower
 7° /0° 10.8 mm 0 cm
May 6 Cloudy
Cloudy
 12° /-2° 1.2 mm 0 cm
May 7 Overcast
Overcast
 17° /2° 1.5 mm 0 cm
May 8 Sunny
Sunny
 19° /5° 0 mm 0 cm
May 9 Sunny
Sunny
 18° /5° 0 mm 0 cm
May 10 Sunny
Sunny
 24° /6° 0 mm 0 cm
May 11 Patchy rain possible
Patchy rain possible
 22° /10° 0.3 mm 0 cm
May 12 Overcast
Overcast
 22° /5° 0.2 mm 0 cm
May 13 Moderate rain at times
Moderate rain at times
 18° /6° 5.2 mm 0 cm
May 14 Patchy rain possible
Patchy rain possible
 11° /3° 3.2 mm 0 cm
May 15 Patchy rain possible
Patchy rain possible
 11° /3° 1.2 mm 0 cm
May 16 Patchy rain possible
Patchy rain possible
 11° /1° 4.5 mm 0 cm
May 17 Moderate or heavy rain shower
Moderate or heavy rain shower
 11° /1° 2.9 mm 0 cm
May 18 Heavy rain at times
Heavy rain at times
 8° /0° 7.8 mm 0.4 cm
May 19 Overcast
Overcast
 12° /-1° 0.2 mm 0 cm
May 20 Patchy rain possible
Patchy rain possible
 12° /1° 3.3 mm 0 cm
May 21 Patchy rain possible
Patchy rain possible
 12° /0° 0.7 mm 0 cm
May 22 Heavy rain at times
Heavy rain at times
 15° /1° 1.4 mm 0 cm
May 23 Moderate rain at times
Moderate rain at times
 18° /2° 0.5 mm 0 cm
May 24 Partly cloudy
Partly cloudy
 20° /6° 0 mm 0 cm
May 25 Mist
Mist
 21° /5° 0 mm 0 cm
May 26 Sunny
Sunny
 23° /6° 1.6 mm 0 cm
May 27 Thundery outbreaks possible
Thundery outbreaks possible
 21° /9° 1.5 mm 0 cm
May 28 Sunny
Sunny
 24° /8° 0.1 mm 0 cm
May 29 Partly cloudy
Partly cloudy
 25° /7° 0.4 mm 0 cm
May 30 Mist
Mist
 16° /8° 11.7 mm 0 cm
May 31 Sunny
Sunny
 19° /6° 4 mm 0 cm
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Important Notice
Our weather forecast for Montana 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 Montana forecast closer to your planned date for the most up-to-date weather information.
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Montana in May - FAQ

What are the expected maximum and minimum temperatures in Montana during May?

During May, expect a variety of temperatures with highs around 17° and lows near 4°, suitable for diverse activities and preferences.

How much rainfall should be expected in Montana during May?

In May, Montana can expect light to moderate rainfall, totaling 49.6 mm across approximately 11 days. Occasional showers are possible, and planning ahead for them could be helpful.

Will it snow in Montana in May 2027?

Montana typically sees 0.435 cm of snowfall during May.

What are the typical wind conditions in Montana during May?

The average wind speed in Montana during May is 15 km/h, suggesting breezy to windy conditions, depending on your activities.

Montana snow forecast May 2027

Track daily snowfall levels and discover Montana’s snowy potential this May ❄️
On average, Montana sees 1 snowy days during May, with approximately 0.4 cm of total snowfall.

May rainfall patterns in Montana

Explore the daily rainfall trends and prepare for Montanas May weather 💧
Typically, Montana has 11 rainy days in May with a total of 49.6 mm of rainfall.

UV exposure in Montana during May

Stay informed about UV levels for safe outdoor activities throughout the month of May ☀️
Counties in Montana
Select a county for an accurate weather forecast
Cascade CountyFlathead CountyGallatin CountyLewis and Clark CountyMissoula CountySilver Bow CountyYellowstone County
Top locations in Montana
Select a location for an accurate weather forecast
BillingsBozemanButteGlacier National ParkGreat FallsHelenaMissoula
More Locations

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Location coordinates Where is Montana?

Get accurate weather forecasts for Montana, located at latitude 45.68 and longitude -111.039. Stay updated with localized weather information tailored for Montana.

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