S
M
T
W
T
F
S
30
99°
74°
31
86°
68°
1
96°
62°
2
97°
68°
3
93°
77°
4
93°
72°
5
98°
73°
6
100°
73°
7
99°
72°
8
100°
74°
9
95°
69°
10
91°
66°
11
90°
68°
12
94°
65°
13
90°
66°
14
95°
66°
15
94°
65°
16
94°
64°
17
93°
61°
18
89°
64°
19
91°
63°
20
89°
63°
21
92°
62°
22
94°
64°
23
93°
63°
24
88°
62°
25
88°
61°
26
89°
62°
27
85°
59°
28
85°
59°
29
86°
56°
30
87°
58°
1
89°
60°
2
92°
60°
3
91°
59°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Pima
Pima's September 2026 forecast shows daily high temperatures ranging from 85° to 100°, with overnight lows between 56° and 74°. The average high for September is 92° with an average low of 64°. 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 Pima. See also: October | November | December.