🌷 Your Ultimate Garden Calendar!

Weather Almanac: Portland, OR 97231

🗓️ Historical norms for December

November January
Jan. Feb. Mar. Apr. May. Jun. Jul. Aug. Sep. Oct. Nov. Dec.
December avg. precipitation
🌧️ 7.40"
December days below freezing
📉 ≈13.6 days
Average December lows 29°F – 35°F
USDA Zone
8b
Annual extreme lows 15°F to 20°F
Last Spring Frost (36°F)
🌷 May 13
View full details
First Fall Frost (36°F)
🍂 Oct 4
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
Jan. Feb. Mar. Apr. May. Jun. Jul. Aug. Sep. Oct. Nov. Dec.

Temperature climatic data from weather station: SCAPPOOSE IND AP (USW00004201)

Precipitation climatic data from weather station: SCAPPOOSE IND AP (USW00004201)

Agricultural climatic data from weather station: SCAPPOOSE IND AP (USW00004201)