Weather Almanac: Jamestown, CO 80455

🗓️ Historical norms for January 2026

December February

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

January avg. precipitation

🌧️ 2.32"

January days below freezing

📉 ≈31.0 days

Average January lows ≈10.7°F

USDA Zone

Annual extreme lows -15°F to -10°F

Last Spring Frost (36°F)

🌷 May 22

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First Fall Frost (36°F)

🍂 Sep 23

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F: Forecast

H: Normal High Temp

L: Normal Low Temp

Sunday

Monday

Tuesday

Wednesday

Thursday

Friday

Saturday

Thu. January 1 New Year's Day

🌅 7:23 a.m.

H: ≈29.8°F

L: ≈11.0°F

🌇 4:46 p.m.

Fri. January 2

🌅 7:23 a.m.

H: ≈29.9°F

L: ≈11.0°F

🌇 4:47 p.m.

Sat. January 3

🌅 7:23 a.m.

H: ≈29.9°F

L: ≈11.0°F

🌇 4:48 p.m.

Sun. January 4

🌅 7:23 a.m.

H: ≈30.0°F

L: ≈11.0°F

🌇 4:49 p.m.

Mon. January 5

🌅 7:23 a.m.

H: ≈30.0°F

L: ≈11.0°F

🌇 4:50 p.m.

Tue. January 6 Epiphany

🌅 7:23 a.m.

H: ≈30.0°F

L: ≈11.0°F

🌇 4:51 p.m.

Wed. January 7

🌅 7:23 a.m.

H: ≈30.1°F

L: ≈11.0°F

🌇 4:52 p.m.

Thu. January 8

🌅 7:23 a.m.

H: ≈30.1°F

L: ≈11.0°F

🌇 4:53 p.m.

Fri. January 9

🌅 7:23 a.m.

H: ≈30.1°F

L: ≈11.0°F

🌇 4:54 p.m.

Sat. January 10

🌅 7:23 a.m.

H: ≈30.1°F

L: ≈11.0°F

🌇 4:55 p.m.

Sun. January 11

🌅 7:23 a.m.

H: ≈30.1°F

L: ≈11.0°F

🌇 4:56 p.m.

Mon. January 12

🌅 7:22 a.m.

H: ≈30.1°F

L: ≈10.9°F

🌇 4:57 p.m.

Tue. January 13

🌅 7:22 a.m.

H: ≈30.1°F

L: ≈10.9°F

🌇 4:58 p.m.

Wed. January 14

🌅 7:22 a.m.

H: ≈30.0°F

L: ≈10.9°F

🌇 4:59 p.m.

Thu. January 15

🌅 7:21 a.m.

H: ≈30.0°F

L: ≈10.8°F

🌇 5:00 p.m.

Fri. January 16

🌅 7:21 a.m.

H: ≈30.0°F

L: ≈10.8°F

🌇 5:01 p.m.

Sat. January 17

🌅 7:20 a.m.

H: ≈29.9°F

L: ≈10.8°F

🌇 5:02 p.m.

Sun. January 18

🌅 7:20 a.m.

H: ≈29.9°F

L: ≈10.7°F

🌇 5:04 p.m.

Mon. January 19 Martin Luther King Jr. Day

🌅 7:19 a.m.

H: ≈29.8°F

L: ≈10.7°F

🌇 5:05 p.m.

Tue. January 20

🌅 7:19 a.m.

H: ≈29.8°F

L: ≈10.6°F

🌇 5:06 p.m.

Wed. January 21

🌅 7:18 a.m.

H: ≈29.7°F

L: ≈10.6°F

🌇 5:07 p.m.

Thu. January 22

🌅 7:18 a.m.

H: ≈29.7°F

L: ≈10.5°F

🌇 5:08 p.m.

Fri. January 23

🌅 7:17 a.m.

H: ≈29.6°F

L: ≈10.5°F

🌇 5:09 p.m.

Sat. January 24

🌅 7:16 a.m.

H: ≈29.6°F

L: ≈10.4°F

🌇 5:11 p.m.

Sun. January 25

🌅 7:15 a.m.

H: ≈29.5°F

L: ≈10.4°F

🌇 5:12 p.m.

Mon. January 26

🌅 7:15 a.m.

H: ≈29.5°F

L: ≈10.3°F

🌇 5:13 p.m.

Tue. January 27

🌅 7:14 a.m.

H: ≈29.4°F

L: ≈10.3°F

🌇 5:14 p.m.

Wed. January 28

🌅 7:13 a.m.

H: ≈29.4°F

L: ≈10.2°F

🌇 5:15 p.m.

Thu. January 29

🌅 7:12 a.m.

H: ≈29.3°F

L: ≈10.2°F

🌇 5:17 p.m.

Fri. January 30

🌅 7:11 a.m.

H: ≈29.3°F

L: ≈10.1°F

🌇 5:18 p.m.

Sat. January 31

🌅 7:11 a.m.

H: ≈29.2°F

L: ≈10.1°F

🌇 5:19 p.m.

December February

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

Temperature climatic data from weather station: BOULDER 14 W (USW00094075)

Precipitation climatic data from weather station: BOULDER 14 W (USW00094075)

Agricultural climatic data from weather station: BOULDER (USC00050848)