🌷 Your Ultimate Garden Calendar!

Weather Almanac: Harrisburg, PA 17104

🗓️ Historical norms for September

August October
Jan. Feb. Mar. Apr. May. Jun. Jul. Aug. Sep. Oct. Nov. Dec.
September avg. precipitation
🌧️ 3.64"
September days below freezing
📉 ≈0.0 days
Average September lows 54°F – 58°F
USDA Zone
7a
Annual extreme lows 0°F to 5°F
Last Spring Frost (36°F)
🌷 May 3
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First Fall Frost (36°F)
🍂 Oct 8
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Book Recommendations (ads!)

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

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

📚 The Timber Press Guide to Vegetable Gardening in the Northeast

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: HARRISBURG CPTL CY AP (USW00014751)

Precipitation climatic data from weather station: HARRISBURG CPTL CY AP (USW00014751)

Agricultural climatic data from weather station: HARRISBURG CPTL CY AP (USW00014751)