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Weather Almanac: El Cajon, CA 92021

🗓️ Historical norms for May

April June
Jan. Feb. Mar. Apr. May. Jun. Jul. Aug. Sep. Oct. Nov. Dec.
May avg. precipitation
🌧️ 0.25"
May days below freezing
📉 ≈0.3 days
Average May lows 47°F – 53°F
USDA Zone
10a
Annual extreme lows 30°F to 35°F
Last Spring Frost (36°F)
🌷 Mar 22
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First Fall Frost (36°F)
🍂 Dec 6
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Book Recommendations (ads!)

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

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

📚 California Gardener's Handbook: Your Complete Guide: Select - Plan - Plant - Maintain - Problem-solve

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: EL CAPITAN DAM (USC00042709)

Precipitation climatic data from weather station: LAKESIDE 2 E (USC00044710)

Agricultural climatic data from weather station: ALPINE (USC00040136)