🌷 Your Ultimate Garden Calendar!

Weather Almanac: Hillsboro, OR 97123

🗓️ Historical norms for December 2025

November January
Jan. Feb. Mar. Apr. May. Jun. Jul. Aug. Sep. Oct. Nov. Dec.
December avg. precipitation
🌧️ 6.63"
December days below freezing
📉 ≈8.4 days
Average December lows 34°F – 39°F
USDA Zone
8b
Annual extreme lows 15°F to 20°F
Last Spring Frost (36°F)
🌷 Apr 27
View full details
First Fall Frost (36°F)
🍂 Oct 18
View full details

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
Mon. December 1  

🌅 7:31 a.m.

H: 44°F – 56°F

L: 31°F – 45°F

🌇 4:30 p.m.

Tue. December 2  

🌅 7:33 a.m.

H: 43°F – 56°F

L: 31°F – 45°F

🌇 4:29 p.m.

Wed. December 3  

🌅 7:34 a.m.

H: 43°F – 56°F

L: 31°F – 45°F

🌇 4:29 p.m.

Thu. December 4 🌕

🌅 7:35 a.m.

H: 43°F – 55°F

L: 30°F – 45°F

🌇 4:29 p.m.

Fri. December 5  

🌅 7:36 a.m.

H: 43°F – 55°F

L: 30°F – 45°F

🌇 4:29 p.m.

Sat. December 6  

🌅 7:37 a.m.

H: 42°F – 55°F

L: 30°F – 45°F

🌇 4:28 p.m.

Sun. December 7  

🌅 7:38 a.m.

H: 42°F – 55°F

L: 30°F – 44°F

🌇 4:28 p.m.

Mon. December 8  

🌅 7:39 a.m.

H: 42°F – 55°F

L: 30°F – 44°F

🌇 4:28 p.m.

Tue. December 9  

🌅 7:40 a.m.

H: 42°F – 55°F

L: 30°F – 44°F

🌇 4:28 p.m.

Wed. December 10  

🌅 7:41 a.m.

H: 41°F – 54°F

L: 29°F – 44°F

🌇 4:28 p.m.

Thu. December 11 🌗

🌅 7:42 a.m.

H: 41°F – 54°F

L: 29°F – 44°F

🌇 4:28 p.m.

Fri. December 12  

🌅 7:42 a.m.

H: 41°F – 54°F

L: 29°F – 44°F

🌇 4:28 p.m.

Sat. December 13  

🌅 7:43 a.m.

H: 41°F – 54°F

L: 29°F – 44°F

🌇 4:28 p.m.

Sun. December 14  

🌅 7:44 a.m.

H: 41°F – 54°F

L: 29°F – 44°F

🌇 4:29 p.m.

Mon. December 15  

🌅 7:45 a.m.

H: 40°F – 54°F

L: 29°F – 44°F

🌇 4:29 p.m.

Tue. December 16  

🌅 7:45 a.m.

H: 40°F – 54°F

L: 29°F – 44°F

🌇 4:29 p.m.

Wed. December 17  

🌅 7:46 a.m.

H: 40°F – 54°F

L: 29°F – 44°F

🌇 4:29 p.m.

Thu. December 18  

🌅 7:47 a.m.

H: 40°F – 53°F

L: 29°F – 44°F

🌇 4:30 p.m.

Fri. December 19 🌑

🌅 7:47 a.m.

H: 40°F – 53°F

L: 29°F – 44°F

🌇 4:30 p.m.

Sat. December 20  

🌅 7:48 a.m.

H: 40°F – 53°F

L: 28°F – 43°F

🌇 4:31 p.m.

Sun. December 21 Winter Solstice  

🌅 7:48 a.m.

H: 40°F – 53°F

L: 28°F – 44°F

🌇 4:31 p.m.

Mon. December 22  

🌅 7:49 a.m.

H: 40°F – 53°F

L: 28°F – 44°F

🌇 4:32 p.m.

Tue. December 23  

🌅 7:49 a.m.

H: 40°F – 53°F

L: 28°F – 44°F

🌇 4:32 p.m.

Wed. December 24 Christmas Eve  

🌅 7:50 a.m.

H: 39°F – 53°F

L: 28°F – 44°F

🌇 4:33 p.m.

Thu. December 25 Christmas Day  

🌅 7:50 a.m.

H: 39°F – 53°F

L: 28°F – 44°F

🌇 4:34 p.m.

Fri. December 26  

🌅 7:50 a.m.

H: 39°F – 53°F

L: 28°F – 44°F

🌇 4:34 p.m.

Sat. December 27 🌓

🌅 7:51 a.m.

H: 39°F – 53°F

L: 28°F – 44°F

🌇 4:35 p.m.

Sun. December 28  

🌅 7:51 a.m.

H: 39°F – 53°F

L: 28°F – 44°F

🌇 4:36 p.m.

Mon. December 29  

🌅 7:51 a.m.

H: 39°F – 53°F

L: 29°F – 44°F

🌇 4:37 p.m.

Tue. December 30  

🌅 7:51 a.m.

H: 39°F – 53°F

L: 29°F – 44°F

🌇 4:37 p.m.

Wed. December 31  

🌅 7:51 a.m.

H: 40°F – 53°F

L: 29°F – 44°F

🌇 4:38 p.m.

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

Temperature climatic data from weather station: HILLSBORO (USC00353908)

Precipitation climatic data from weather station: HILLSBORO (USC00353908)

Agricultural climatic data from weather station: HILLSBORO (USC00353908)