S
M
T
W
T
F
S
30
102°
69°
31
101°
67°
1
100°
68°
2
99°
72°
3
100°
68°
4
94°
69°
5
93°
70°
6
92°
68°
7
90°
72°
8
90°
64°
9
89°
69°
10
90°
65°
11
90°
64°
12
91°
63°
13
90°
62°
14
88°
62°
15
88°
61°
16
89°
60°
17
86°
61°
18
87°
60°
19
88°
61°
20
87°
60°
21
90°
62°
22
91°
63°
23
91°
65°
24
86°
64°
25
Hist. Avg.
90°
64°
26
Hist. Avg.
90°
63°
27
Hist. Avg.
89°
63°
28
Hist. Avg.
89°
62°
29
Hist. Avg.
88°
62°
30
Hist. Avg.
88°
62°
1
Hist. Avg.
87°
61°
2
Hist. Avg.
87°
61°
3
Hist. Avg.
86°
60°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Primm
Primm's September 2026 forecast shows daily high temperatures ranging from 86° to 102°, with overnight lows between 60° and 72°. The average high for September is 92° with an average low of 65°. 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 Primm. See also: October | November | December.