Weather Almanac: Pasco, WA 99301

🗓️ Historical norms for December

December avg. precipitation
🌧️ 1.39"
December days below freezing
📉 ≈19.9 days
Average December lows 23°F – 33°F
USDA Zone
7a
Annual extreme lows 0°F to 5°F
Last Spring Frost (36°F)
🌷 May 1
First Fall Frost (36°F)
🍂 Oct 2

Temperature climatic data from weather station: ICE HARBOR DAM (USC00453883)

Precipitation climatic data from weather station: ICE HARBOR DAM (USC00453883)

Agricultural climatic data from weather station: ICE HARBOR DAM (USC00453883)