Weather Almanac: Hillsboro, OR 97124

🌱 Growing Season

USDA Zone

8b

Annual extreme lows 15°F to 20°F

Last Spring Frost (36°F)

🌷 May 17

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First Fall Frost (36°F)

🍂 Sep 28

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🗓️ Monthly Weather Almanac

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📚 Book Recommendations (ads!)

📚 Pacific Northwest Month-by-Month Gardening: What to Do Each Month to Have a Beautiful Garden All Year

📚 Gardening in the Pacific Northwest: The Complete Homeowner's Guide

📚 Growing Vegetables West of the Cascades, 35th Anniversary Edition: The Complete Guide to Organic Gardening

Temperature climatic data from weather station: PORTLAND-HILLSBORO AP (USW00094261)

Precipitation climatic data from weather station: PORTLAND-HILLSBORO AP (USW00094261)

Agricultural climatic data from weather station: PORTLAND-HILLSBORO AP (USW00094261)