S
M
T
W
T
F
S
30
79°
53°
31
75°
50°
1
72°
53°
2
73°
51°
3
73°
52°
4
74°
51°
5
72°
52°
6
72°
56°
7
73°
56°
8
73°
53°
9
74°
50°
10
72°
50°
11
71°
51°
12
71°
53°
13
70°
52°
14
71°
49°
15
72°
55°
16
76°
48°
17
75°
49°
18
74°
49°
19
76°
53°
20
Hist. Avg.
71°
49°
21
Hist. Avg.
71°
49°
22
Hist. Avg.
70°
48°
23
Hist. Avg.
70°
48°
24
Hist. Avg.
69°
47°
25
Hist. Avg.
69°
47°
26
Hist. Avg.
68°
47°
27
Hist. Avg.
68°
46°
28
Hist. Avg.
68°
46°
29
Hist. Avg.
67°
45°
30
Hist. Avg.
67°
45°
1
Hist. Avg.
66°
45°
2
Hist. Avg.
66°
44°
3
Hist. Avg.
65°
44°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Corunna
Corunna's September 2026 forecast shows daily high temperatures ranging from 70° to 79°, with overnight lows between 48° and 56°. The average high for September is 73° with an average low of 52°. 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 Corunna. See also: October | November | December.