S
M
T
W
T
F
S
30
91°
71°
31
89°
70°
1
88°
71°
2
88°
71°
3
89°
70°
4
88°
69°
5
89°
69°
6
90°
70°
7
91°
69°
8
92°
70°
9
91°
69°
10
91°
69°
11
90°
70°
12
91°
69°
13
91°
70°
14
90°
71°
15
89°
71°
16
89°
70°
17
88°
69°
18
87°
68°
19
87°
70°
20
88°
70°
21
87°
67°
22
87°
68°
23
88°
69°
24
89°
67°
25
88°
65°
26
87°
66°
27
88°
68°
28
89°
67°
29
88°
67°
30
88°
68°
1
89°
68°
2
Hist. Avg.
88°
65°
3
Hist. Avg.
88°
65°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Saint Catherine
Saint Catherine's September 2026 forecast shows daily high temperatures ranging from 87° to 92°, with overnight lows between 65° and 71°. 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 Saint Catherine. See also: October | November | December.
