S
M
T
W
T
F
S
30
66°
44°
31
68°
45°
1
73°
46°
2
70°
46°
3
72°
48°
4
71°
50°
5
69°
48°
6
70°
45°
7
70°
48°
8
73°
49°
9
72°
51°
10
73°
51°
11
73°
46°
12
72°
48°
13
71°
49°
14
71°
49°
15
70°
45°
16
71°
39°
17
68°
37°
18
60°
38°
19
58°
36°
20
59°
41°
21
61°
43°
22
64°
46°
23
Hist. Avg.
59°
35°
24
Hist. Avg.
59°
34°
25
Hist. Avg.
59°
34°
26
Hist. Avg.
58°
34°
27
Hist. Avg.
58°
33°
28
Hist. Avg.
57°
33°
29
Hist. Avg.
57°
33°
30
Hist. Avg.
57°
32°
1
Hist. Avg.
56°
32°
2
Hist. Avg.
56°
31°
3
Hist. Avg.
56°
31°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Saskatoon
Saskatoon's September 2026 forecast shows daily high temperatures ranging from 58° to 73°, with overnight lows between 36° and 51°. The average high for September is 69° with an average low of 45°. 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 Saskatoon. See also: October | November | December.