Weather Almanac: Mcallen, TX 78504

🗓️ Historical norms for September 2026

September avg. precipitation
🌧️ 3.87"
September days below freezing
📉 ≈0.0 days
Average September lows ≈72.7°F
USDA Zone
10a
Annual extreme lows 30°F to 35°F
Last Spring Frost (36°F)
🌷 Feb 11
First Fall Frost (36°F)
🍂 Dec 11
Tue. September 1  

🌅 7:12 a.m.

H: ≈95.8°F

L: ≈75.1°F

🌇 7:52 p.m.

Wed. September 2  

🌅 7:13 a.m.

H: ≈95.6°F

L: ≈75.0°F

🌇 7:51 p.m.

Thu. September 3  

🌅 7:13 a.m.

H: ≈95.4°F

L: ≈74.9°F

🌇 7:50 p.m.

Fri. September 4  

🌅 7:14 a.m.

H: ≈95.2°F

L: ≈74.8°F

🌇 7:49 p.m.

Sat. September 5  

🌅 7:14 a.m.

H: ≈95.0°F

L: ≈74.6°F

🌇 7:48 p.m.

Sun. September 6  

🌅 7:15 a.m.

H: ≈94.8°F

L: ≈74.5°F

🌇 7:47 p.m.

Mon. September 7 Labor Day  

🌅 7:15 a.m.

H: ≈94.6°F

L: ≈74.4°F

🌇 7:45 p.m.

Tue. September 8  

🌅 7:15 a.m.

H: ≈94.3°F

L: ≈74.2°F

🌇 7:44 p.m.

Wed. September 9  

🌅 7:16 a.m.

H: ≈94.1°F

L: ≈74.1°F

🌇 7:43 p.m.

Thu. September 10  

🌅 7:16 a.m.

H: ≈93.9°F

L: ≈73.9°F

🌇 7:42 p.m.

Fri. September 11  

🌅 7:17 a.m.

H: ≈93.7°F

L: ≈73.7°F

🌇 7:41 p.m.

Sat. September 12  

🌅 7:17 a.m.

H: ≈93.4°F

L: ≈73.6°F

🌇 7:40 p.m.

Sun. September 13  

🌅 7:17 a.m.

H: ≈93.2°F

L: ≈73.4°F

🌇 7:39 p.m.

Mon. September 14 Holy Cross  

🌅 7:18 a.m.

H: ≈92.9°F

L: ≈73.2°F

🌇 7:38 p.m.

Tue. September 15  

🌅 7:18 a.m.

H: ≈92.7°F

L: ≈73.0°F

🌇 7:37 p.m.

Wed. September 16  

🌅 7:19 a.m.

H: ≈92.5°F

L: ≈72.8°F

🌇 7:35 p.m.

Thu. September 17  

🌅 7:19 a.m.

H: ≈92.2°F

L: ≈72.6°F

🌇 7:34 p.m.

Fri. September 18  

🌅 7:19 a.m.

H: ≈92.0°F

L: ≈72.4°F

🌇 7:33 p.m.

Sat. September 19  

🌅 7:20 a.m.

H: ≈91.8°F

L: ≈72.2°F

🌇 7:32 p.m.

Sun. September 20  

🌅 7:20 a.m.

H: ≈91.5°F

L: ≈72.0°F

🌇 7:31 p.m.

Mon. September 21  

🌅 7:21 a.m.

H: ≈91.3°F

L: ≈71.7°F

🌇 7:30 p.m.

Tue. September 22 Autumn Equinox  

🌅 7:21 a.m.

H: ≈91.1°F

L: ≈71.5°F

🌇 7:29 p.m.

Wed. September 23  

🌅 7:22 a.m.

H: ≈90.9°F

L: ≈71.3°F

🌇 7:28 p.m.

Thu. September 24  

🌅 7:22 a.m.

H: ≈90.7°F

L: ≈71.0°F

🌇 7:26 p.m.

Fri. September 25  

🌅 7:22 a.m.

H: ≈90.4°F

L: ≈70.8°F

🌇 7:25 p.m.

Sat. September 26 🌕

🌅 7:23 a.m.

H: ≈90.2°F

L: ≈70.6°F

🌇 7:24 p.m.

Sun. September 27  

🌅 7:23 a.m.

H: ≈90.0°F

L: ≈70.3°F

🌇 7:23 p.m.

Mon. September 28  

🌅 7:24 a.m.

H: ≈89.8°F

L: ≈70.1°F

🌇 7:22 p.m.

Tue. September 29  

🌅 7:24 a.m.

H: ≈89.6°F

L: ≈69.9°F

🌇 7:21 p.m.

Wed. September 30  

🌅 7:24 a.m.

H: ≈89.5°F

L: ≈69.6°F

🌇 7:20 p.m.


Temperature climatic data from weather station: EDINBURG (USC00412758)

Precipitation climatic data from weather station: EDINBURG (USC00412758)

Agricultural climatic data from weather station: MCALLEN MILLER INTL AP (USW00012959)