S
M
T
W
T
F
S
30
75°
51°
31
76°
52°
1
78°
52°
2
79°
53°
3
78°
51°
4
77°
51°
5
74°
50°
6
74°
49°
7
68°
43°
8
67°
41°
9
73°
48°
10
76°
50°
11
67°
42°
12
66°
44°
13
74°
48°
14
75°
51°
15
75°
49°
16
73°
47°
17
74°
47°
18
75°
49°
19
74°
46°
20
72°
40°
21
68°
46°
22
70°
45°
23
70°
39°
24
66°
37°
25
64°
35°
26
66°
41°
27
68°
41°
28
69°
45°
29
69°
38°
30
66°
32°
1
57°
35°
2
63°
40°
3
66°
43°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Kamloops 3
Kamloops 3's September 2026 forecast shows daily high temperatures ranging from 57° to 79°, with overnight lows between 32° and 53°. The average high for September is 71° 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 Kamloops 3. See also: October | November | December.