Weather Almanac: Heart Butte, MT 59448

🗓️ Historical norms for May 2026

May avg. precipitation
🌧️ 2.34"
May days below freezing
📉 ≈11.8 days
Average May lows 32°F – 36°F
USDA Zone
4b
Annual extreme lows -25°F to -20°F
Last Spring Frost (36°F)
🌷 Always
First Fall Frost (36°F)
🍂 Always
Fri. May 1 🌕

🌅 6:12 a.m.

H: 43°F – 63°F

L: 24°F – 37°F

🌇 8:45 p.m.

Sat. May 2  

🌅 6:10 a.m.

H: 43°F – 64°F

L: 24°F – 38°F

🌇 8:47 p.m.

Sun. May 3  

🌅 6:09 a.m.

H: 44°F – 64°F

L: 25°F – 38°F

🌇 8:48 p.m.

Mon. May 4  

🌅 6:07 a.m.

H: 44°F – 65°F

L: 25°F – 38°F

🌇 8:49 p.m.

Tue. May 5  

🌅 6:05 a.m.

H: 44°F – 65°F

L: 25°F – 38°F

🌇 8:51 p.m.

Wed. May 6  

🌅 6:04 a.m.

H: 45°F – 65°F

L: 26°F – 38°F

🌇 8:52 p.m.

Thu. May 7  

🌅 6:02 a.m.

H: 45°F – 66°F

L: 26°F – 39°F

🌇 8:54 p.m.

Fri. May 8  

🌅 6:01 a.m.

H: 45°F – 66°F

L: 26°F – 39°F

🌇 8:55 p.m.

Sat. May 9 🌗

🌅 5:59 a.m.

H: 46°F – 66°F

L: 26°F – 39°F

🌇 8:56 p.m.

Sun. May 10  

🌅 5:58 a.m.

H: 46°F – 67°F

L: 27°F – 39°F

🌇 8:58 p.m.

Mon. May 11  

🌅 5:56 a.m.

H: 46°F – 67°F

L: 27°F – 39°F

🌇 8:59 p.m.

Tue. May 12  

🌅 5:55 a.m.

H: 47°F – 67°F

L: 27°F – 40°F

🌇 9:00 p.m.

Wed. May 13  

🌅 5:54 a.m.

H: 47°F – 68°F

L: 27°F – 40°F

🌇 9:02 p.m.

Thu. May 14 Ascension  

🌅 5:52 a.m.

H: 47°F – 68°F

L: 28°F – 40°F

🌇 9:03 p.m.

Fri. May 15  

🌅 5:51 a.m.

H: 48°F – 68°F

L: 28°F – 40°F

🌇 9:04 p.m.

Sat. May 16 🌑

🌅 5:50 a.m.

H: 48°F – 69°F

L: 28°F – 41°F

🌇 9:06 p.m.

Sun. May 17  

🌅 5:49 a.m.

H: 48°F – 69°F

L: 28°F – 41°F

🌇 9:07 p.m.

Mon. May 18  

🌅 5:47 a.m.

H: 49°F – 69°F

L: 29°F – 41°F

🌇 9:08 p.m.

Tue. May 19  

🌅 5:46 a.m.

H: 49°F – 69°F

L: 29°F – 41°F

🌇 9:09 p.m.

Wed. May 20  

🌅 5:45 a.m.

H: 50°F – 70°F

L: 29°F – 42°F

🌇 9:11 p.m.

Thu. May 21  

🌅 5:44 a.m.

H: 50°F – 70°F

L: 29°F – 42°F

🌇 9:12 p.m.

Fri. May 22  

🌅 5:43 a.m.

H: 50°F – 70°F

L: 30°F – 42°F

🌇 9:13 p.m.

Sat. May 23 🌓

🌅 5:42 a.m.

H: 51°F – 71°F

L: 30°F – 42°F

🌇 9:14 p.m.

Sun. May 24 Pentecost  

🌅 5:41 a.m.

H: 51°F – 71°F

L: 30°F – 43°F

🌇 9:15 p.m.

Mon. May 25 Memorial Day  

🌅 5:40 a.m.

H: 51°F – 71°F

L: 30°F – 43°F

🌇 9:16 p.m.

Tue. May 26  

🌅 5:39 a.m.

H: 52°F – 71°F

L: 30°F – 43°F

🌇 9:18 p.m.

Wed. May 27  

🌅 5:38 a.m.

H: 52°F – 72°F

L: 31°F – 43°F

🌇 9:19 p.m.

Thu. May 28  

🌅 5:37 a.m.

H: 52°F – 72°F

L: 31°F – 43°F

🌇 9:20 p.m.

Fri. May 29  

🌅 5:37 a.m.

H: 53°F – 72°F

L: 31°F – 44°F

🌇 9:21 p.m.

Sat. May 30  

🌅 5:36 a.m.

H: 53°F – 72°F

L: 31°F – 44°F

🌇 9:22 p.m.

Sun. May 31 🌕

🌅 5:35 a.m.

H: 53°F – 72°F

L: 32°F – 44°F

🌇 9:23 p.m.


Temperature climatic data from weather station: EAST GLACIER (USC00242629)

Precipitation climatic data from weather station: EAST GLACIER (USC00242629)

Agricultural climatic data from weather station: EAST GLACIER (USC00242629)