S
M
T
W
T
F
S
30
66°
47°
31
66°
46°
1
67°
45°
2
66°
53°
3
68°
49°
4
68°
44°
5
64°
45°
6
68°
52°
7
67°
53°
8
73°
51°
9
71°
49°
10
64°
48°
11
64°
51°
12
65°
50°
13
71°
50°
14
61°
44°
15
60°
44°
16
Hist. Avg.
61°
44°
17
Hist. Avg.
61°
44°
18
Hist. Avg.
61°
44°
19
Hist. Avg.
60°
43°
20
Hist. Avg.
60°
43°
21
Hist. Avg.
60°
43°
22
Hist. Avg.
59°
43°
23
Hist. Avg.
59°
42°
24
Hist. Avg.
59°
42°
25
Hist. Avg.
58°
42°
26
Hist. Avg.
58°
41°
27
Hist. Avg.
58°
41°
28
Hist. Avg.
57°
41°
29
Hist. Avg.
57°
41°
30
Hist. Avg.
57°
40°
1
Hist. Avg.
56°
40°
2
Hist. Avg.
56°
40°
3
Hist. Avg.
56°
39°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Nipissing
Nipissing's September 2026 forecast shows daily high temperatures ranging from 60° to 73°, with overnight lows between 44° and 53°. The average high for September is 66° with an average low of 48°. 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 Nipissing. See also: October | November | December.
