🌷 Your Ultimate Garden Calendar!

Weather Almanac: Heron, MT 59844

🗓️ Historical norms for December 2025

November January
Jan. Feb. Mar. Apr. May. Jun. Jul. Aug. Sep. Oct. Nov. Dec.
December avg. precipitation
🌧️ 4.15"
December days below freezing
📉 ≈28.4 days
Average December lows 17°F – 26°F
USDA Zone
6b
Annual extreme lows -5°F to 0°F
Last Spring Frost (36°F)
🌷 Always
View full details
First Fall Frost (36°F)
🍂 Always
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Book Recommendations (ads!)

📚 Rocky Mountain Month-By-Month Gardening: What to Do Each Month to Have A Beautiful Garden All Year - Colorado, Idaho, Montana, Utah, Wyoming

F: Forecast
H: Normal High Temp
L: Normal Low Temp
Mon. December 1  

🌅 8:13 a.m.

H: 28°F – 40°F

L: 16°F – 34°F

🌇 4:52 p.m.

Tue. December 2  

🌅 8:14 a.m.

H: 28°F – 40°F

L: 15°F – 33°F

🌇 4:52 p.m.

Wed. December 3  

🌅 8:15 a.m.

H: 27°F – 40°F

L: 15°F – 33°F

🌇 4:51 p.m.

Thu. December 4 🌕

🌅 8:16 a.m.

H: 27°F – 40°F

L: 15°F – 33°F

🌇 4:51 p.m.

Fri. December 5  

🌅 8:17 a.m.

H: 27°F – 40°F

L: 14°F – 33°F

🌇 4:51 p.m.

Sat. December 6  

🌅 8:18 a.m.

H: 26°F – 39°F

L: 14°F – 32°F

🌇 4:51 p.m.

Sun. December 7  

🌅 8:20 a.m.

H: 26°F – 39°F

L: 14°F – 32°F

🌇 4:50 p.m.

Mon. December 8  

🌅 8:21 a.m.

H: 26°F – 39°F

L: 13°F – 32°F

🌇 4:50 p.m.

Tue. December 9  

🌅 8:22 a.m.

H: 26°F – 39°F

L: 13°F – 32°F

🌇 4:50 p.m.

Wed. December 10  

🌅 8:23 a.m.

H: 26°F – 39°F

L: 13°F – 32°F

🌇 4:50 p.m.

Thu. December 11 🌗

🌅 8:24 a.m.

H: 25°F – 38°F

L: 12°F – 32°F

🌇 4:50 p.m.

Fri. December 12  

🌅 8:24 a.m.

H: 25°F – 38°F

L: 12°F – 32°F

🌇 4:50 p.m.

Sat. December 13  

🌅 8:25 a.m.

H: 25°F – 38°F

L: 12°F – 31°F

🌇 4:50 p.m.

Sun. December 14  

🌅 8:26 a.m.

H: 25°F – 38°F

L: 12°F – 31°F

🌇 4:50 p.m.

Mon. December 15  

🌅 8:27 a.m.

H: 25°F – 38°F

L: 11°F – 31°F

🌇 4:51 p.m.

Tue. December 16  

🌅 8:28 a.m.

H: 25°F – 38°F

L: 11°F – 31°F

🌇 4:51 p.m.

Wed. December 17  

🌅 8:28 a.m.

H: 24°F – 38°F

L: 11°F – 31°F

🌇 4:51 p.m.

Thu. December 18  

🌅 8:29 a.m.

H: 24°F – 38°F

L: 11°F – 31°F

🌇 4:51 p.m.

Fri. December 19 🌑

🌅 8:30 a.m.

H: 24°F – 38°F

L: 11°F – 31°F

🌇 4:52 p.m.

Sat. December 20  

🌅 8:30 a.m.

H: 24°F – 38°F

L: 11°F – 31°F

🌇 4:52 p.m.

Sun. December 21 Winter Solstice  

🌅 8:31 a.m.

H: 24°F – 38°F

L: 10°F – 31°F

🌇 4:53 p.m.

Mon. December 22  

🌅 8:31 a.m.

H: 24°F – 38°F

L: 10°F – 31°F

🌇 4:53 p.m.

Tue. December 23  

🌅 8:32 a.m.

H: 24°F – 38°F

L: 10°F – 31°F

🌇 4:54 p.m.

Wed. December 24 Christmas Eve  

🌅 8:32 a.m.

H: 24°F – 38°F

L: 10°F – 31°F

🌇 4:55 p.m.

Thu. December 25 Christmas Day  

🌅 8:32 a.m.

H: 24°F – 38°F

L: 10°F – 31°F

🌇 4:55 p.m.

Fri. December 26  

🌅 8:33 a.m.

H: 24°F – 38°F

L: 10°F – 31°F

🌇 4:56 p.m.

Sat. December 27 🌓

🌅 8:33 a.m.

H: 24°F – 38°F

L: 10°F – 31°F

🌇 4:57 p.m.

Sun. December 28  

🌅 8:33 a.m.

H: 24°F – 38°F

L: 10°F – 31°F

🌇 4:58 p.m.

Mon. December 29  

🌅 8:33 a.m.

H: 24°F – 38°F

L: 10°F – 31°F

🌇 4:58 p.m.

Tue. December 30  

🌅 8:33 a.m.

H: 24°F – 38°F

L: 10°F – 31°F

🌇 4:59 p.m.

Wed. December 31  

🌅 8:33 a.m.

H: 24°F – 38°F

L: 10°F – 31°F

🌇 5:00 p.m.

November January
Jan. Feb. Mar. Apr. May. Jun. Jul. Aug. Sep. Oct. Nov. Dec.

Temperature climatic data from weather station: HERON 2 NW (USC00244084)

Precipitation climatic data from weather station: HERON 2 NW (USC00244084)

Agricultural climatic data from weather station: HERON 2 NW (USC00244084)