S
M
T
W
T
F
S
30
92°
60°
31
92°
53°
1
88°
58°
2
80°
61°
3
89°
60°
4
88°
54°
5
89°
52°
6
81°
58°
7
88°
59°
8
89°
56°
9
88°
54°
10
79°
52°
11
78°
52°
12
81°
51°
13
77°
49°
14
77°
53°
15
79°
55°
16
85°
56°
17
86°
54°
18
86°
47°
19
78°
50°
20
79°
52°
21
84°
54°
22
82°
44°
23
83°
42°
24
72°
43°
25
74°
46°
26
77°
45°
27
Hist. Avg.
76°
44°
28
Hist. Avg.
75°
43°
29
Hist. Avg.
75°
43°
30
Hist. Avg.
74°
42°
1
Hist. Avg.
74°
42°
2
Hist. Avg.
74°
41°
3
Hist. Avg.
73°
41°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in St. Francis
St. Francis's September 2026 forecast shows daily high temperatures ranging from 72° to 92°, with overnight lows between 42° and 61°. The average high for September is 83° with an average low of 53°. 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 St. Francis. See also: October | November | December.
