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Weather Almanac: Harlingen, TX 78550

🗓️ Historical norms for September

August October
Jan. Feb. Mar. Apr. May. Jun. Jul. Aug. Sep. Oct. Nov. Dec.
September avg. precipitation
🌧️ 5.22"
September days below freezing
📉 ≈0.0 days
Average September lows 71°F – 74°F
USDA Zone
10a
Annual extreme lows 30°F to 35°F
Last Spring Frost (36°F)
🌷 Feb 19
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First Fall Frost (36°F)
🍂 Dec 5
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Book Recommendations (ads!)

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

📚 Grow Great Vegetables in Texas

📚 Southwest Gardener's Handbook: Your Complete Guide: Select, Plan, Plant, Maintain, Problem-Solve - Texas, Arizona, New Mexico, Oklahoma, Southern Nevada, Utah

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: HARLINGEN RIO GRANDE AP (USW00012904)

Precipitation climatic data from weather station: HARLINGEN RIO GRANDE AP (USW00012904)

Agricultural climatic data from weather station: HARLINGEN RIO GRANDE AP (USW00012904)