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Weather Almanac: Mount Olive, IL 62069

🗓️ Historical norms for December

November January
Jan. Feb. Mar. Apr. May. Jun. Jul. Aug. Sep. Oct. Nov. Dec.
December avg. precipitation
🌧️ 2.74"
December days below freezing
📉 ≈24.3 days
Average December lows 17°F – 29°F
USDA Zone
6b
Annual extreme lows -5°F to 0°F
Last Spring Frost (36°F)
🌷 May 4
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First Fall Frost (36°F)
🍂 Sep 28
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Book Recommendations (ads!)

📚 Illinois, Indiana & Ohio Month-by-Month Gardening: What to Do Each Month to Have a Beautiful Garden All Year

📚 Grow Great Vegetables Illinois

📚 Midwest Gardener's Handbook, 2nd Edition: All You Need to Know to Plan, Plant & Maintain a Midwest Garden

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: CARLINVILLE (USC00111280)

Precipitation climatic data from weather station: CARLINVILLE (USC00111280)

Agricultural climatic data from weather station: CARLINVILLE (USC00111280)