Weather Almanac: Irwin, IA 51446

🌱 Growing Season

USDA Zone

5a

Annual extreme lows -20°F to -15°F

Last Spring Frost (36°F)

🌷 May 9

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First Fall Frost (36°F)

🍂 Sep 21

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📚 Book Recommendations (ads!)

📚 Prairie & Plains States Month-by-Month Gardening: What to Do Each Month to Have a Beautiful Garden All Year

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

📚 The Timber Press Guide to Vegetable Gardening in the Midwest

📍 Zip Codes

51446 (Irwin, IA)

Temperature climatic data from weather station: HARLAN 1N (USC00133632)

Precipitation climatic data from weather station: HARLAN 1N (USC00133632)

Agricultural climatic data from weather station: HARLAN 1N (USC00133632)