S
M
T
W
T
F
S
30
98°
77°
31
98°
77°
1
98°
78°
2
97°
79°
3
98°
79°
4
98°
78°
5
97°
78°
6
94°
77°
7
96°
78°
8
97°
78°
9
97°
76°
10
96°
77°
11
96°
77°
12
95°
76°
13
95°
77°
14
94°
76°
15
96°
77°
16
96°
78°
17
Hist. Avg.
94°
76°
18
Hist. Avg.
94°
75°
19
Hist. Avg.
94°
75°
20
Hist. Avg.
93°
75°
21
Hist. Avg.
93°
75°
22
Hist. Avg.
93°
75°
23
Hist. Avg.
93°
74°
24
Hist. Avg.
93°
74°
25
Hist. Avg.
93°
74°
26
Hist. Avg.
93°
74°
27
Hist. Avg.
93°
74°
28
Hist. Avg.
92°
73°
29
Hist. Avg.
92°
73°
30
Hist. Avg.
92°
73°
1
Hist. Avg.
92°
73°
2
Hist. Avg.
92°
72°
3
Hist. Avg.
92°
72°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Mcallen-Pharr
Mcallen-Pharr's September 2026 forecast shows daily high temperatures ranging from 94° to 98°, with overnight lows between 76° and 79°. The average high for September is 96° with an average low of 77°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how September weather will actually feel in Mcallen-Pharr. See also: October | November | December.
