🌷 Your Ultimate Garden Calendar!

Weather Almanac: Rialto, CA 92376

🗓️ Historical norms for December

November January
Jan. Feb. Mar. Apr. May. Jun. Jul. Aug. Sep. Oct. Nov. Dec.
December avg. precipitation
🌧️ 2.41"
December days below freezing
📉 ≈1.8 days
Average December lows 39°F – 44°F
USDA Zone
10a
Annual extreme lows 30°F to 35°F
Last Spring Frost (36°F)
🌷 Mar 15
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First Fall Frost (36°F)
🍂 Nov 24
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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 BERNARDINO F S 226 (USC00047723)

Precipitation climatic data from weather station: SAN BERNARDINO F S 226 (USC00047723)

Agricultural climatic data from weather station: SAN BERNARDINO F S 226 (USC00047723)