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Glacier National Park (MT)
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United States weather

Weather in Glacier National Park, Montana for May 2027

Your guide to Glacier National Park weather in May - trends and predictions

    Temperatures

  • In general, the average temperature in Glacier National Park at the beginning of May is 17.6 °C. As the month progressed, temperatures tended to significantly warm up, reaching an average of 23.2 °C by the end of May.

    • Rain 🌧️

  • The climate of Glacier National Park in May is notably wet, with an average of 15 rainy days, and a total of 76.3 mm of precipitation.

    • More

  • Is May a good time to visit Glacier National Park? check out the best time to travel to Glacier National Park page.

  • ✨ Is May a good time to visit Glacier National Park? – Ask the AI Weatherman

Average dry days
16
Dry days
Average rainy days
15
Rainy days
Average snowy days
0
Snow days
Average temperatures
18°/6°
Temperatures
Average wind speed
12 km/h
Avg max wind
Average humidity
62 %
Avg humidity

Glacier National Park Weather May

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

Temperatures trend during May in Glacier National Park

See the weather trend as well as the moving average line

May weather in Glacier National Park day by day

Click on a date for more information
April June
Date Weather Temperatures Rain Snow More
May 1 Partly cloudy
Partly cloudy
 19° /2° 0 mm 0 cm
May 2 Sunny
Sunny
 21° /4° 0 mm 0 cm
May 3 Sunny
Sunny
 23° /5° 0 mm 0 cm
May 4 Patchy rain possible
Patchy rain possible
 13° /6° 1.6 mm 0 cm
May 5 Patchy rain possible
Patchy rain possible
 14° /3° 0.4 mm 0 cm
May 6 Sunny
Sunny
 17° /0° 0.8 mm 0 cm
May 7 Partly cloudy
Partly cloudy
 18° /6° 0.8 mm 0 cm
May 8 Patchy rain possible
Patchy rain possible
 19° /7° 0.6 mm 0 cm
May 9 Cloudy
Cloudy
 20° /6° 0 mm 0 cm
May 10 Overcast
Overcast
 22° /8° 0 mm 0 cm
May 11 Light rain
Light rain
 19° /8° 3.4 mm 0 cm
May 12 Moderate or heavy rain shower
Moderate or heavy rain shower
 18° /5° 5.6 mm 0 cm
May 13 Moderate or heavy rain shower
Moderate or heavy rain shower
 16° /6° 5.2 mm 0 cm
May 14 Light rain
Light rain
 13° /5° 4.8 mm 0 cm
May 15 Light rain
Light rain
 12° /6° 3.2 mm 0 cm
May 16 Moderate rain at times
Moderate rain at times
 12° /2° 7.9 mm 0.2 cm
May 17 Light rain
Light rain
 14° /3° 2.5 mm 0 cm
May 18 Light rain
Light rain
 12° /3° 3.5 mm 0 cm
May 19 Light rain
Light rain
 13° /3° 4 mm 0 cm
May 20 Light rain
Light rain
 12° /4° 2.7 mm 0 cm
May 21 Moderate or heavy rain shower
Moderate or heavy rain shower
 12° /4° 7.1 mm 0 cm
May 22 Overcast
Overcast
 17° /5° 0.4 mm 0 cm
May 23 Patchy rain possible
Patchy rain possible
 19° /6° 2 mm 0 cm
May 24 Sunny
Sunny
 21° /7° 0 mm 0 cm
May 25 Sunny
Sunny
 25° /8° 0.2 mm 0 cm
May 26 Light rain
Light rain
 24° /11° 3.2 mm 0 cm
May 27 Partly cloudy
Partly cloudy
 22° /11° 0.1 mm 0 cm
May 28 Sunny
Sunny
 27° /11° 0.9 mm 0 cm
May 29 Thundery outbreaks possible
Thundery outbreaks possible
 26° /12° 3.8 mm 0 cm
May 30 Patchy rain possible
Patchy rain possible
 19° /8° 1 mm 0 cm
May 31 Moderate rain
Moderate rain
 20° /6° 10.8 mm 0 cm
Next
Important Notice
Our weather forecast for Glacier National Park 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 Glacier National Park forecast closer to your planned date for the most up-to-date weather information.
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Glacier National Park in May - FAQ

What are the expected maximum and minimum temperatures in Glacier National Park during May?
Enjoy moderate daytime temperatures of up to 18° and cooler nights around 6°. Ideal for a range of outdoor activities, from hiking to city tours.

How much rainfall should be expected in Glacier National Park during May?
Moderate rainfall is anticipated in Glacier National Park during May, with a total of 76.3 mm spread over approximately 15 days. Considering plans for rainy days is advisable.

Will it snow in Glacier National Park in May 2027?
Glacier National Park typically sees 0.2 cm of snowfall during May.

What are the typical wind conditions in Glacier National Park during May?
The average wind speed in Glacier National Park during May is 12 km/h, suggesting breezy to windy conditions, depending on your activities.

Glacier National Park snow forecast May 2027

Track daily snowfall levels and discover Glacier National Park’s snowy potential this May ❄️

May rainfall patterns in Glacier National Park

Explore the daily rainfall trends and prepare for Glacier National Parks May weather 💧
Typically, Glacier National Park has 15 rainy days in May with a total of 76.3 mm of rainfall.

UV exposure in Glacier National Park during May

Stay informed about UV levels for safe outdoor activities throughout the month of May ☀️
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Location coordinates Where is Glacier National Park?

Get accurate weather forecasts for Glacier National Park, located at latitude 48.683 and longitude -113.8. Stay updated with localized weather information tailored for Glacier National Park.

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