🌷 Your Ultimate Garden Calendar!

Weather Almanac: Ontario, WI 54651

🗓️ Historical norms for May

April June
Jan. Feb. Mar. Apr. May. Jun. Jul. Aug. Sep. Oct. Nov. Dec.
May avg. precipitation
🌧️ 3.93"
May days below freezing
📉 ≈0.6 days
Average May lows 45°F – 51°F
USDA Zone
4b
Annual extreme lows -25°F to -20°F
Last Spring Frost (36°F)
🌷 May 13
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First Fall Frost (36°F)
🍂 Sep 27
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Book Recommendations (ads!)

📚 Minnesota & Wisconsin Month-by-Month Gardening: What to Do Each Month to Have A Beautiful Garden All Year

📚 Grow Great Vegetables Minnesota and Wisconsin

📚 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: CASHTON (USC00471280)

Precipitation climatic data from weather station: ONTARIO 3E (USC00476280)

Agricultural climatic data from weather station: CASHTON (USC00471280)