Weather Almanac: Umatilla, OR 97882

🗓️ Historical norms for December 2025

November January

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

December avg. precipitation

🌧️ 1.34"

December days below freezing

📉 ≈18.3 days

Average December lows ≈28.8°F

USDA Zone

Annual extreme lows 5°F to 10°F

Last Spring Frost (36°F)

🌷 May 9

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First Fall Frost (36°F)

🍂 Sep 23

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Book Recommendations (ads!)

📚 Pacific Northwest Month-by-Month Gardening: What to Do Each Month to Have a Beautiful Garden All Year

📚 Gardening in the Pacific Northwest: The Complete Homeowner's Guide

📚 Growing Vegetables West of the Cascades, 35th Anniversary Edition: The Complete Guide to Organic Gardening

F: Forecast

H: Normal High Temp

L: Normal Low Temp

Sunday

Monday

Tuesday

Wednesday

Thursday

Friday

Saturday

Mon. December 1

🌅 7:18 a.m.

H: ≈42.2°F

L: ≈30.8°F

🌇 4:13 p.m.

Tue. December 2

🌅 7:20 a.m.

H: ≈41.9°F

L: ≈30.6°F

🌇 4:13 p.m.

Wed. December 3

🌅 7:21 a.m.

H: ≈41.5°F

L: ≈30.4°F

🌇 4:13 p.m.

Thu. December 4

🌅 7:22 a.m.

H: ≈41.1°F

L: ≈30.1°F

🌇 4:13 p.m.

Fri. December 5

🌅 7:23 a.m.

H: ≈40.8°F

L: ≈29.9°F

🌇 4:12 p.m.

Sat. December 6

🌅 7:24 a.m.

H: ≈40.5°F

L: ≈29.8°F

🌇 4:12 p.m.

Sun. December 7

🌅 7:25 a.m.

H: ≈40.3°F

L: ≈29.6°F

🌇 4:12 p.m.

Mon. December 8

🌅 7:26 a.m.

H: ≈40.0°F

L: ≈29.4°F

🌇 4:12 p.m.

Tue. December 9

🌅 7:27 a.m.

H: ≈39.8°F

L: ≈29.2°F

🌇 4:12 p.m.

Wed. December 10

🌅 7:28 a.m.

H: ≈39.6°F

L: ≈29.1°F

🌇 4:12 p.m.

Thu. December 11

🌅 7:29 a.m.

H: ≈39.5°F

L: ≈28.9°F

🌇 4:12 p.m.

Fri. December 12

🌅 7:30 a.m.

H: ≈39.3°F

L: ≈28.8°F

🌇 4:12 p.m.

Sat. December 13

🌅 7:30 a.m.

H: ≈39.2°F

L: ≈28.7°F

🌇 4:12 p.m.

Sun. December 14

🌅 7:31 a.m.

H: ≈39.1°F

L: ≈28.6°F

🌇 4:12 p.m.

Mon. December 15

🌅 7:32 a.m.

H: ≈39.0°F

L: ≈28.5°F

🌇 4:13 p.m.

Tue. December 16

🌅 7:33 a.m.

H: ≈39.0°F

L: ≈28.4°F

🌇 4:13 p.m.

Wed. December 17

🌅 7:33 a.m.

H: ≈39.0°F

L: ≈28.3°F

🌇 4:13 p.m.

Thu. December 18

🌅 7:34 a.m.

H: ≈39.0°F

L: ≈28.2°F

🌇 4:13 p.m.

Fri. December 19

🌅 7:35 a.m.

H: ≈39.0°F

L: ≈28.2°F

🌇 4:14 p.m.

Sat. December 20

🌅 7:35 a.m.

H: ≈39.0°F

L: ≈28.1°F

🌇 4:14 p.m.

Sun. December 21 Winter Solstice

🌅 7:36 a.m.

H: ≈39.1°F

L: ≈28.1°F

🌇 4:15 p.m.

Mon. December 22

🌅 7:36 a.m.

H: ≈39.1°F

L: ≈28.1°F

🌇 4:15 p.m.

Tue. December 23

🌅 7:37 a.m.

H: ≈39.2°F

L: ≈28.1°F

🌇 4:16 p.m.

Wed. December 24 Christmas Eve

🌅 7:37 a.m.

H: ≈39.3°F

L: ≈28.1°F

🌇 4:17 p.m.

Thu. December 25 Christmas Day

🌅 7:37 a.m.

H: ≈39.4°F

L: ≈28.1°F

🌇 4:17 p.m.

Fri. December 26

🌅 7:38 a.m.

H: ≈39.5°F

L: ≈28.1°F

🌇 4:18 p.m.

Sat. December 27

🌅 7:38 a.m.

H: ≈39.6°F

L: ≈28.1°F

🌇 4:19 p.m.

Sun. December 28

🌅 7:38 a.m.

H: ≈39.7°F

L: ≈28.1°F

🌇 4:19 p.m.

Mon. December 29

🌅 7:38 a.m.

H: ≈39.9°F

L: ≈28.1°F

🌇 4:20 p.m.

Tue. December 30

🌅 7:38 a.m.

H: ≈40.0°F

L: ≈28.2°F

🌇 4:21 p.m.

Wed. December 31

🌅 7:38 a.m.

H: ≈40.1°F

L: ≈28.2°F

🌇 4:22 p.m.

November January

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

Temperature climatic data from weather station: MCNARY DAM NO 2 (USC00355392)

Precipitation climatic data from weather station: MCNARY DAM NO 2 (USC00355392)

Agricultural climatic data from weather station: HERMISTON 2 NW (USC00353818)