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Weather Almanac: Potrero, CA 91963

🗓️ Historical norms for April

March May
Jan. Feb. Mar. Apr. May. Jun. Jul. Aug. Sep. Oct. Nov. Dec.
April avg. precipitation
🌧️ 0.96"
April days below freezing
📉 ≈4.6 days
Average April lows 36°F – 40°F
USDA Zone
9a
Annual extreme lows 20°F to 25°F
Last Spring Frost (36°F)
🌷 Always
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First Fall Frost (36°F)
🍂 Always
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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: CAMPO (USW00003164)

Precipitation climatic data from weather station: CAMPO (USW00003164)

Agricultural climatic data from weather station: CAMPO (USW00003164)