S
M
T
W
T
F
S
30
63°
44°
31
74°
45°
1
81°
40°
2
78°
53°
3
64°
43°
4
64°
42°
5
54°
45°
6
57°
47°
7
52°
48°
8
65°
49°
9
69°
49°
10
71°
48°
11
55°
45°
12
54°
40°
13
53°
35°
14
56°
42°
15
48°
41°
16
64°
39°
17
71°
37°
18
69°
37°
19
71°
39°
20
74°
41°
21
74°
47°
22
73°
46°
23
N/A
24
73°
48°
25
75°
45°
26
53°
35°
27
54°
38°
28
59°
41°
29
60°
45°
30
58°
40°
1
61°
38°
2
56°
38°
3
59°
44°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Waterton Park
Waterton Park's September 2026 forecast shows daily high temperatures ranging from 53° to 75°, with overnight lows between 35° and 48°. The average high for September is 61° with an average low of 41°. 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 Waterton Park. See also: October | November | December.
