🌷 Your Ultimate Garden Calendar!

Weather Almanac: Helmville, MT 59843

🗓️ Historical norms for December 2025

November January
Jan. Feb. Mar. Apr. May. Jun. Jul. Aug. Sep. Oct. Nov. Dec.
December avg. precipitation
🌧️ 0.86"
December days below freezing
📉 ≈30.7 days
Average December lows 0°F – 12°F
USDA Zone
5a
Annual extreme lows -20°F to -15°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  

🌅 7:56 a.m.

H: 21°F – 41°F

L: -3°F – 22°F

🌇 4:45 p.m.

Tue. December 2  

🌅 7:58 a.m.

H: 21°F – 41°F

L: -3°F – 22°F

🌇 4:44 p.m.

Wed. December 3  

🌅 7:59 a.m.

H: 20°F – 40°F

L: -4°F – 22°F

🌇 4:44 p.m.

Thu. December 4 🌕

🌅 8:00 a.m.

H: 20°F – 40°F

L: -4°F – 22°F

🌇 4:44 p.m.

Fri. December 5  

🌅 8:01 a.m.

H: 20°F – 40°F

L: -5°F – 21°F

🌇 4:43 p.m.

Sat. December 6  

🌅 8:02 a.m.

H: 19°F – 39°F

L: -5°F – 21°F

🌇 4:43 p.m.

Sun. December 7  

🌅 8:03 a.m.

H: 19°F – 39°F

L: -6°F – 21°F

🌇 4:43 p.m.

Mon. December 8  

🌅 8:04 a.m.

H: 18°F – 39°F

L: -6°F – 20°F

🌇 4:43 p.m.

Tue. December 9  

🌅 8:05 a.m.

H: 18°F – 39°F

L: -6°F – 20°F

🌇 4:43 p.m.

Wed. December 10  

🌅 8:06 a.m.

H: 18°F – 39°F

L: -7°F – 20°F

🌇 4:43 p.m.

Thu. December 11 🌗

🌅 8:07 a.m.

H: 18°F – 39°F

L: -7°F – 20°F

🌇 4:43 p.m.

Fri. December 12  

🌅 8:08 a.m.

H: 17°F – 39°F

L: -8°F – 20°F

🌇 4:43 p.m.

Sat. December 13  

🌅 8:09 a.m.

H: 17°F – 38°F

L: -8°F – 20°F

🌇 4:43 p.m.

Sun. December 14  

🌅 8:10 a.m.

H: 17°F – 38°F

L: -8°F – 19°F

🌇 4:43 p.m.

Mon. December 15  

🌅 8:10 a.m.

H: 17°F – 38°F

L: -8°F – 19°F

🌇 4:43 p.m.

Tue. December 16  

🌅 8:11 a.m.

H: 17°F – 38°F

L: -9°F – 19°F

🌇 4:44 p.m.

Wed. December 17  

🌅 8:12 a.m.

H: 16°F – 38°F

L: -9°F – 19°F

🌇 4:44 p.m.

Thu. December 18  

🌅 8:12 a.m.

H: 16°F – 38°F

L: -9°F – 19°F

🌇 4:44 p.m.

Fri. December 19 🌑

🌅 8:13 a.m.

H: 16°F – 38°F

L: -9°F – 19°F

🌇 4:45 p.m.

Sat. December 20  

🌅 8:13 a.m.

H: 16°F – 38°F

L: -9°F – 19°F

🌇 4:45 p.m.

Sun. December 21 Winter Solstice  

🌅 8:14 a.m.

H: 16°F – 38°F

L: -9°F – 19°F

🌇 4:46 p.m.

Mon. December 22  

🌅 8:14 a.m.

H: 16°F – 39°F

L: -10°F – 19°F

🌇 4:46 p.m.

Tue. December 23  

🌅 8:15 a.m.

H: 16°F – 39°F

L: -10°F – 19°F

🌇 4:47 p.m.

Wed. December 24 Christmas Eve  

🌅 8:15 a.m.

H: 16°F – 39°F

L: -10°F – 19°F

🌇 4:47 p.m.

Thu. December 25 Christmas Day  

🌅 8:16 a.m.

H: 16°F – 39°F

L: -10°F – 20°F

🌇 4:48 p.m.

Fri. December 26  

🌅 8:16 a.m.

H: 16°F – 39°F

L: -10°F – 20°F

🌇 4:49 p.m.

Sat. December 27 🌓

🌅 8:16 a.m.

H: 16°F – 39°F

L: -10°F – 20°F

🌇 4:50 p.m.

Sun. December 28  

🌅 8:16 a.m.

H: 16°F – 39°F

L: -10°F – 20°F

🌇 4:50 p.m.

Mon. December 29  

🌅 8:17 a.m.

H: 16°F – 40°F

L: -10°F – 20°F

🌇 4:51 p.m.

Tue. December 30  

🌅 8:17 a.m.

H: 16°F – 40°F

L: -10°F – 20°F

🌇 4:52 p.m.

Wed. December 31  

🌅 8:17 a.m.

H: 17°F – 40°F

L: -9°F – 20°F

🌇 4:53 p.m.

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

Temperature climatic data from weather station: OVANDO 9 SSE (USC00246304)

Precipitation climatic data from weather station: OVANDO 9 SSE (USC00246304)

Agricultural climatic data from weather station: OVANDO 9 SSE (USC00246304)