S
M
T
W
T
F
S
30
88°
60°
31
86°
59°
1
75°
57°
2
76°
57°
3
81°
58°
4
83°
51°
5
84°
50°
6
82°
55°
7
84°
58°
8
82°
51°
9
81°
50°
10
80°
51°
11
80°
53°
12
81°
54°
13
80°
51°
14
81°
53°
15
80°
49°
16
79°
49°
17
79°
48°
18
76°
49°
19
78°
49°
20
78°
51°
21
77°
50°
22
79°
50°
23
78°
47°
24
73°
41°
25
70°
37°
26
66°
37°
27
64°
42°
28
71°
46°
29
74°
47°
30
74°
41°
1
68°
33°
2
60°
38°
3
60°
41°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Thunder Hawk
Thunder Hawk's September 2026 forecast shows daily high temperatures ranging from 60° to 88°, with overnight lows between 33° and 60°. The average high for September is 77° with an average low of 49°. 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 Thunder Hawk. See also: October | November | December.
