S
M
T
W
T
F
S
30
61°
49°
31
64°
49°
1
67°
50°
2
66°
49°
3
66°
48°
4
70°
49°
5
67°
47°
6
59°
46°
7
60°
48°
8
61°
46°
9
66°
48°
10
65°
46°
11
61°
44°
12
57°
39°
13
58°
42°
14
63°
45°
15
67°
44°
16
67°
46°
17
68°
45°
18
69°
46°
19
68°
44°
20
68°
39°
21
62°
40°
22
62°
44°
23
65°
42°
24
66°
41°
25
63°
41°
26
63°
42°
27
64°
44°
28
63°
42°
29
63°
40°
30
61°
40°
1
55°
31°
2
52°
29°
3
49°
30°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Lake Saskatoon
Lake Saskatoon's September 2026 forecast shows daily high temperatures ranging from 49° to 70°, with overnight lows between 29° and 50°. The average high for September is 63° 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 Lake Saskatoon. See also: October | November | December.