S
M
T
W
T
F
S
30
63°
51°
31
60°
50°
1
57°
49°
2
66°
51°
3
68°
51°
4
67°
50°
5
66°
51°
6
64°
50°
7
64°
50°
8
62°
49°
9
64°
49°
10
64°
50°
11
53°
41°
12
55°
44°
13
58°
40°
14
57°
41°
15
58°
42°
16
59°
45°
17
61°
46°
18
63°
48°
19
63°
45°
20
64°
42°
21
58°
38°
22
57°
38°
23
55°
37°
24
49°
38°
25
50°
38°
26
52°
42°
27
55°
35°
28
52°
36°
29
52°
30°
30
48°
29°
1
43°
34°
2
48°
37°
3
48°
32°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Hay River
Hay River's September 2026 forecast shows daily high temperatures ranging from 43° to 68°, with overnight lows between 29° and 51°. The average high for September is 58° with an average low of 43°. 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 Hay River. See also: October | November | December.