Weather Almanac: Boulder, WY 82923

🗓️ Historical norms for December 2025

November January

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

December avg. precipitation

🌧️ 0.43"

December days below freezing

📉 ≈31.0 days

Average December lows -9°F – 1°F

USDA Zone

Annual extreme lows -30°F to -25°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

🌅 7:28 a.m.

H: 22°F – 41°F

L: -11°F – 12°F

🌇 4:45 p.m.

Tue. December 2

🌅 7:29 a.m.

H: 22°F – 41°F

L: -11°F – 12°F

🌇 4:44 p.m.

Wed. December 3

🌅 7:30 a.m.

H: 21°F – 40°F

L: -12°F – 11°F

🌇 4:44 p.m.

Thu. December 4

🌅 7:31 a.m.

H: 21°F – 40°F

L: -12°F – 11°F

🌇 4:44 p.m.

Fri. December 5

🌅 7:32 a.m.

H: 21°F – 39°F

L: -13°F – 11°F

🌇 4:44 p.m.

Sat. December 6

🌅 7:33 a.m.

H: 20°F – 39°F

L: -13°F – 10°F

🌇 4:44 p.m.

Sun. December 7

🌅 7:34 a.m.

H: 20°F – 39°F

L: -14°F – 10°F

🌇 4:44 p.m.

Mon. December 8

🌅 7:35 a.m.

H: 19°F – 38°F

L: -14°F – 9°F

🌇 4:44 p.m.

Tue. December 9

🌅 7:36 a.m.

H: 19°F – 38°F

L: -15°F – 9°F

🌇 4:44 p.m.

Wed. December 10

🌅 7:36 a.m.

H: 19°F – 38°F

L: -15°F – 9°F

🌇 4:44 p.m.

Thu. December 11

🌅 7:37 a.m.

H: 19°F – 38°F

L: -16°F – 8°F

🌇 4:44 p.m.

Fri. December 12

🌅 7:38 a.m.

H: 18°F – 37°F

L: -16°F – 8°F

🌇 4:44 p.m.

Sat. December 13

🌅 7:39 a.m.

H: 18°F – 37°F

L: -17°F – 8°F

🌇 4:44 p.m.

Sun. December 14

🌅 7:40 a.m.

H: 18°F – 37°F

L: -17°F – 8°F

🌇 4:44 p.m.

Mon. December 15

🌅 7:40 a.m.

H: 18°F – 37°F

L: -17°F – 7°F

🌇 4:44 p.m.

Tue. December 16

🌅 7:41 a.m.

H: 17°F – 37°F

L: -18°F – 7°F

🌇 4:45 p.m.

Wed. December 17

🌅 7:42 a.m.

H: 17°F – 36°F

L: -18°F – 7°F

🌇 4:45 p.m.

Thu. December 18

🌅 7:42 a.m.

H: 17°F – 36°F

L: -18°F – 7°F

🌇 4:46 p.m.

Fri. December 19

🌅 7:43 a.m.

H: 17°F – 36°F

L: -19°F – 7°F

🌇 4:46 p.m.

Sat. December 20

🌅 7:43 a.m.

H: 17°F – 36°F

L: -19°F – 7°F

🌇 4:46 p.m.

Sun. December 21 Winter Solstice

🌅 7:44 a.m.

H: 17°F – 36°F

L: -19°F – 6°F

🌇 4:47 p.m.

Mon. December 22

🌅 7:44 a.m.

H: 17°F – 36°F

L: -19°F – 6°F

🌇 4:47 p.m.

Tue. December 23

🌅 7:45 a.m.

H: 17°F – 36°F

L: -19°F – 6°F

🌇 4:48 p.m.

Wed. December 24 Christmas Eve

🌅 7:45 a.m.

H: 17°F – 36°F

L: -19°F – 6°F

🌇 4:49 p.m.

Thu. December 25 Christmas Day

🌅 7:46 a.m.

H: 17°F – 36°F

L: -19°F – 6°F

🌇 4:49 p.m.

Fri. December 26

🌅 7:46 a.m.

H: 17°F – 36°F

L: -20°F – 6°F

🌇 4:50 p.m.

Sat. December 27

🌅 7:46 a.m.

H: 17°F – 36°F

L: -20°F – 6°F

🌇 4:51 p.m.

Sun. December 28

🌅 7:47 a.m.

H: 16°F – 35°F

L: -20°F – 6°F

🌇 4:51 p.m.

Mon. December 29

🌅 7:47 a.m.

H: 16°F – 35°F

L: -20°F – 6°F

🌇 4:52 p.m.

Tue. December 30

🌅 7:47 a.m.

H: 16°F – 35°F

L: -20°F – 6°F

🌇 4:53 p.m.

Wed. December 31

🌅 7:47 a.m.

H: 16°F – 35°F

L: -20°F – 6°F

🌇 4:54 p.m.

November January

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

Temperature climatic data from weather station: BOULDER REARING STN (USC00480951)

Precipitation climatic data from weather station: BOULDER REARING STN (USC00480951)

Agricultural climatic data from weather station: BOULDER REARING STN (USC00480951)