S
M
T
W
T
F
S
30
98°
72°
31
99°
73°
1
90°
73°
2
84°
73°
3
90°
75°
4
95°
73°
5
93°
72°
6
94°
73°
7
97°
73°
8
97°
72°
9
94°
71°
10
92°
73°
11
92°
72°
12
91°
72°
13
94°
71°
14
91°
71°
15
91°
70°
16
93°
70°
17
92°
69°
18
87°
66°
19
89°
69°
20
89°
70°
21
89°
70°
22
90°
70°
23
89°
69°
24
89°
69°
25
88°
68°
26
88°
68°
27
87°
67°
28
87°
68°
29
86°
68°
30
86°
66°
1
81°
58°
2
76°
57°
3
77°
57°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Hemphill
Hemphill's September 2026 forecast shows daily high temperatures ranging from 76° to 97°, with overnight lows between 57° and 73°. The average high for September is 89° with an average low of 69°. 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 Hemphill. See also: October | November | December.