Weather Almanac: Simms, MT 59477

🗓️ Historical norms for December 2025

November January

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

December avg. precipitation

🌧️ 0.40"

December days below freezing

📉 ≈27.3 days

Average December lows 9°F – 24°F

USDA Zone

4b

Annual extreme lows -25°F to -20°F

Last Spring Frost (36°F)

🌷 Always

View full details

First Fall Frost (36°F)

🍂 Always

View full details

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

Sunday

Monday

Tuesday

Wednesday

Thursday

Friday

Saturday

Mon. December 1

🌅 7:55 a.m.

H: 24°F – 50°F

L: 5°F – 32°F

🌇 4:38 p.m.

Tue. December 2

🌅 7:56 a.m.

H: 23°F – 50°F

L: 5°F – 32°F

🌇 4:38 p.m.

Wed. December 3

🌅 7:57 a.m.

H: 23°F – 49°F

L: 5°F – 32°F

🌇 4:38 p.m.

Thu. December 4

🌅 7:58 a.m.

H: 23°F – 49°F

L: 4°F – 31°F

🌇 4:37 p.m.

Fri. December 5

🌅 7:59 a.m.

H: 23°F – 49°F

L: 4°F – 31°F

🌇 4:37 p.m.

Sat. December 6

🌅 8:00 a.m.

H: 22°F – 49°F

L: 4°F – 31°F

🌇 4:37 p.m.

Sun. December 7

🌅 8:01 a.m.

H: 22°F – 49°F

L: 3°F – 31°F

🌇 4:37 p.m.

Mon. December 8

🌅 8:02 a.m.

H: 22°F – 49°F

L: 3°F – 31°F

🌇 4:36 p.m.

Tue. December 9

🌅 8:03 a.m.

H: 22°F – 49°F

L: 3°F – 31°F

🌇 4:36 p.m.

Wed. December 10

🌅 8:04 a.m.

H: 22°F – 49°F

L: 2°F – 31°F

🌇 4:36 p.m.

Thu. December 11

🌅 8:05 a.m.

H: 21°F – 48°F

L: 2°F – 31°F

🌇 4:36 p.m.

Fri. December 12

🌅 8:06 a.m.

H: 21°F – 48°F

L: 2°F – 31°F

🌇 4:36 p.m.

Sat. December 13

🌅 8:07 a.m.

H: 21°F – 48°F

L: 2°F – 31°F

🌇 4:37 p.m.

Sun. December 14

🌅 8:08 a.m.

H: 21°F – 48°F

L: 1°F – 31°F

🌇 4:37 p.m.

Mon. December 15

🌅 8:09 a.m.

H: 21°F – 48°F

L: 1°F – 30°F

🌇 4:37 p.m.

Tue. December 16

🌅 8:09 a.m.

H: 21°F – 49°F

L: 1°F – 31°F

🌇 4:37 p.m.

Wed. December 17

🌅 8:10 a.m.

H: 21°F – 49°F

L: 1°F – 31°F

🌇 4:37 p.m.

Thu. December 18

🌅 8:11 a.m.

H: 21°F – 49°F

L: 0°F – 31°F

🌇 4:38 p.m.

Fri. December 19

🌅 8:11 a.m.

H: 21°F – 49°F

L: 0°F – 31°F

🌇 4:38 p.m.

Sat. December 20

🌅 8:12 a.m.

H: 20°F – 49°F

L: 0°F – 31°F

🌇 4:39 p.m.

Sun. December 21 Winter Solstice

🌅 8:12 a.m.

H: 20°F – 49°F

L: 0°F – 31°F

🌇 4:39 p.m.

Mon. December 22

🌅 8:13 a.m.

H: 20°F – 49°F

L: 0°F – 31°F

🌇 4:40 p.m.

Tue. December 23

🌅 8:13 a.m.

H: 20°F – 49°F

L: -1°F – 31°F

🌇 4:40 p.m.

Wed. December 24 Christmas Eve

🌅 8:14 a.m.

H: 20°F – 50°F

L: -1°F – 31°F

🌇 4:41 p.m.

Thu. December 25 Christmas Day

🌅 8:14 a.m.

H: 20°F – 50°F

L: -1°F – 31°F

🌇 4:42 p.m.

Fri. December 26

🌅 8:14 a.m.

H: 20°F – 50°F

L: -1°F – 31°F

🌇 4:42 p.m.

Sat. December 27

🌅 8:14 a.m.

H: 20°F – 50°F

L: -1°F – 31°F

🌇 4:43 p.m.

Sun. December 28

🌅 8:15 a.m.

H: 20°F – 50°F

L: -1°F – 31°F

🌇 4:44 p.m.

Mon. December 29

🌅 8:15 a.m.

H: 20°F – 50°F

L: -1°F – 32°F

🌇 4:45 p.m.

Tue. December 30

🌅 8:15 a.m.

H: 20°F – 50°F

L: -1°F – 32°F

🌇 4:46 p.m.

Wed. December 31

🌅 8:15 a.m.

H: 20°F – 50°F

L: -1°F – 32°F

🌇 4:46 p.m.

November January

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

Temperature climatic data from weather station: FAIRFIELD (USC00242857)

Precipitation climatic data from weather station: SIMMS 1 NE (USC00247618)

Agricultural climatic data from weather station: SUN RIVER 4 S (USC00248021)