S
M
T
W
T
F
S
30
84°
58°
31
84°
61°
1
85°
62°
2
84°
57°
3
86°
54°
4
82°
54°
5
81°
53°
6
81°
55°
7
84°
58°
8
81°
53°
9
81°
57°
10
82°
56°
11
81°
54°
12
84°
59°
13
83°
53°
14
84°
48°
15
78°
50°
16
77°
53°
17
79°
55°
18
78°
50°
19
76°
48°
20
75°
47°
21
76°
46°
22
76°
51°
23
81°
54°
24
82°
50°
25
81°
49°
26
81°
51°
27
78°
45°
28
80°
41°
29
70°
43°
30
70°
52°
1
75°
50°
2
79°
54°
3
78°
40°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Pleasant Grove
Pleasant Grove's September 2026 forecast shows daily high temperatures ranging from 70° to 86°, with overnight lows between 40° and 62°. The average high for September is 80° with an average low of 52°. 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 Pleasant Grove. See also: October | November | December.