Weather Almanac: Mcallen, TX 78504

🗓️ Historical norms for May 2026

May avg. precipitation
🌧️ 2.69"
May days below freezing
📉 ≈0.0 days
Average May lows ≈70.1°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
Fri. May 1 🌕

🌅 6:55 a.m.

H: ≈87.5°F

L: ≈67.4°F

🌇 8:04 p.m.

Sat. May 2  

🌅 6:54 a.m.

H: ≈87.7°F

L: ≈67.6°F

🌇 8:05 p.m.

Sun. May 3  

🌅 6:53 a.m.

H: ≈87.8°F

L: ≈67.8°F

🌇 8:06 p.m.

Mon. May 4  

🌅 6:53 a.m.

H: ≈88.0°F

L: ≈67.9°F

🌇 8:06 p.m.

Tue. May 5  

🌅 6:52 a.m.

H: ≈88.1°F

L: ≈68.1°F

🌇 8:07 p.m.

Wed. May 6  

🌅 6:51 a.m.

H: ≈88.3°F

L: ≈68.3°F

🌇 8:07 p.m.

Thu. May 7  

🌅 6:51 a.m.

H: ≈88.4°F

L: ≈68.5°F

🌇 8:08 p.m.

Fri. May 8  

🌅 6:50 a.m.

H: ≈88.6°F

L: ≈68.6°F

🌇 8:08 p.m.

Sat. May 9 🌗

🌅 6:49 a.m.

H: ≈88.7°F

L: ≈68.8°F

🌇 8:09 p.m.

Sun. May 10  

🌅 6:49 a.m.

H: ≈88.9°F

L: ≈69.0°F

🌇 8:09 p.m.

Mon. May 11  

🌅 6:48 a.m.

H: ≈89.0°F

L: ≈69.2°F

🌇 8:10 p.m.

Tue. May 12  

🌅 6:47 a.m.

H: ≈89.2°F

L: ≈69.4°F

🌇 8:10 p.m.

Wed. May 13  

🌅 6:47 a.m.

H: ≈89.4°F

L: ≈69.5°F

🌇 8:11 p.m.

Thu. May 14 Ascension  

🌅 6:46 a.m.

H: ≈89.5°F

L: ≈69.7°F

🌇 8:12 p.m.

Fri. May 15  

🌅 6:46 a.m.

H: ≈89.7°F

L: ≈69.9°F

🌇 8:12 p.m.

Sat. May 16 🌑

🌅 6:45 a.m.

H: ≈89.9°F

L: ≈70.1°F

🌇 8:13 p.m.

Sun. May 17  

🌅 6:45 a.m.

H: ≈90.0°F

L: ≈70.3°F

🌇 8:13 p.m.

Mon. May 18  

🌅 6:44 a.m.

H: ≈90.2°F

L: ≈70.5°F

🌇 8:14 p.m.

Tue. May 19  

🌅 6:44 a.m.

H: ≈90.4°F

L: ≈70.6°F

🌇 8:14 p.m.

Wed. May 20  

🌅 6:43 a.m.

H: ≈90.5°F

L: ≈70.8°F

🌇 8:15 p.m.

Thu. May 21  

🌅 6:43 a.m.

H: ≈90.7°F

L: ≈71.0°F

🌇 8:15 p.m.

Fri. May 22  

🌅 6:43 a.m.

H: ≈90.9°F

L: ≈71.2°F

🌇 8:16 p.m.

Sat. May 23 🌓

🌅 6:42 a.m.

H: ≈91.0°F

L: ≈71.4°F

🌇 8:16 p.m.

Sun. May 24 Pentecost  

🌅 6:42 a.m.

H: ≈91.2°F

L: ≈71.6°F

🌇 8:17 p.m.

Mon. May 25 Memorial Day  

🌅 6:42 a.m.

H: ≈91.4°F

L: ≈71.7°F

🌇 8:17 p.m.

Tue. May 26  

🌅 6:41 a.m.

H: ≈91.6°F

L: ≈71.9°F

🌇 8:18 p.m.

Wed. May 27  

🌅 6:41 a.m.

H: ≈91.7°F

L: ≈72.1°F

🌇 8:18 p.m.

Thu. May 28  

🌅 6:41 a.m.

H: ≈91.9°F

L: ≈72.3°F

🌇 8:19 p.m.

Fri. May 29  

🌅 6:41 a.m.

H: ≈92.1°F

L: ≈72.5°F

🌇 8:19 p.m.

Sat. May 30  

🌅 6:40 a.m.

H: ≈92.2°F

L: ≈72.6°F

🌇 8:20 p.m.

Sun. May 31 🌕

🌅 6:40 a.m.

H: ≈92.4°F

L: ≈72.8°F

🌇 8:20 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)