S
M
T
W
T
F
S
30
91°
70°
31
90°
71°
1
94°
70°
2
92°
70°
3
89°
69°
4
88°
67°
5
88°
64°
6
89°
63°
7
91°
69°
8
93°
68°
9
91°
69°
10
92°
70°
11
91°
67°
12
90°
66°
13
91°
67°
14
90°
66°
15
91°
67°
16
Hist. Avg.
87°
65°
17
Hist. Avg.
86°
65°
18
Hist. Avg.
86°
64°
19
Hist. Avg.
86°
64°
20
Hist. Avg.
85°
64°
21
Hist. Avg.
85°
63°
22
Hist. Avg.
85°
63°
23
Hist. Avg.
84°
62°
24
Hist. Avg.
84°
62°
25
Hist. Avg.
84°
61°
26
Hist. Avg.
83°
61°
27
Hist. Avg.
83°
60°
28
Hist. Avg.
82°
60°
29
Hist. Avg.
82°
60°
30
Hist. Avg.
82°
59°
1
Hist. Avg.
81°
59°
2
Hist. Avg.
81°
58°
3
Hist. Avg.
81°
58°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Uncertain
Uncertain's September 2026 forecast shows daily high temperatures ranging from 88° to 94°, with overnight lows between 63° and 71°. The average high for September is 91° with an average low of 68°. 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 Uncertain. See also: October | November | December.
