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Weather Almanac: San Luis Obispo, CA 93401

🗓️ Historical norms for January

December February
Jan. Feb. Mar. Apr. May. Jun. Jul. Aug. Sep. Oct. Nov. Dec.
January avg. precipitation
🌧️ 3.66"
January days below freezing
📉 ≈2.1 days
Average January lows 38°F – 43°F
USDA Zone
9b
Annual extreme lows 25°F to 30°F
Last Spring Frost (36°F)
🌷 Apr 4
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First Fall Frost (36°F)
🍂 Nov 19
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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: SAN LUIS OBISPO AP (USW00093206)

Precipitation climatic data from weather station: SAN LUIS OBISPO AP (USW00093206)

Agricultural climatic data from weather station: SAN LUIS OBISPO AP (USW00093206)