Weather Almanac: San Lorenzo, CA 94580

🗓️ Historical norms for December

December avg. precipitation
🌧️ 3.12"
December days below freezing
📉 ≈0.5 days
Average December lows 40°F – 46°F
USDA Zone
10a
Annual extreme lows 30°F to 35°F
Last Spring Frost (36°F)
🌷 Feb 4
First Fall Frost (36°F)
🍂 Dec 9

Temperature climatic data from weather station: HAYWARD AIR TERMINAL (USW00093228)

Precipitation climatic data from weather station: HAYWARD AIR TERMINAL (USW00093228)

Agricultural climatic data from weather station: HAYWARD AIR TERMINAL (USW00093228)