S
M
T
W
T
F
S
30
69°
53°
31
75°
53°
1
71°
51°
2
71°
59°
3
74°
50°
4
75°
57°
5
76°
58°
6
72°
55°
7
67°
48°
8
72°
46°
9
74°
51°
10
81°
57°
11
78°
54°
12
84°
63°
13
78°
43°
14
74°
47°
15
70°
51°
16
73°
50°
17
76°
49°
18
75°
48°
19
72°
51°
20
70°
46°
21
68°
43°
22
67°
46°
23
66°
40°
24
62°
42°
25
56°
34°
26
58°
33°
27
67°
43°
28
63°
37°
29
58°
36°
30
58°
32°
1
62°
35°
2
66°
35°
3
66°
39°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Park City
Park City's September 2026 forecast shows daily high temperatures ranging from 56° to 84°, with overnight lows between 32° and 63°. The average high for September is 69° with an average low of 44°. 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 Park City. See also: October | November | December.