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7 Days
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Monthly
Precipitation
Temperature
Wind
Temperature Unit Selection
°Celsius
°Fahrenheit
Monthly Historical Averages
McAllen, TX
Content continues below
September
Average Temperature
High
34°
Feels 37
Low
24°
Feels 26
Average Precipitation
13 Days
Rain amount
88.4mm
Snow amount
0cm
Content continues below
Daily Historical Averages
September 2026
S
M
T
W
T
F
S
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
37°
24
37°
25
38°
26
38°
27
38°
28
39°
29
39°
30
38°
Forecast
Wednesday, September 23, 2026
Day
37°
Feels 41
Wind
33 km/h E
Gust
50 km/h
Humidity
37%
P.O.P
40%
Rain
~1 mm
Night
27°
Feels 30
Wind
34 km/h E
Gust
50 km/h
Humidity
81%
P.O.P
0%
Historical Averages
Sep 23
High
Feels
Low
Feels
Precip Frequency
Total Daylight
Humidity
Historical Averages are based on data recorded from 2000 onwards.