S
M
T
W
T
F
S
30
93°
72°
31
96°
73°
1
97°
73°
2
99°
74°
3
100°
76°
4
102°
76°
5
102°
76°
6
97°
74°
7
97°
76°
8
93°
76°
9
96°
73°
10
98°
72°
11
90°
74°
12
93°
74°
13
94°
71°
14
98°
71°
15
97°
72°
16
95°
76°
17
94°
71°
18
99°
71°
19
99°
74°
20
97°
72°
21
97°
71°
22
94°
68°
23
89°
68°
24
81°
66°
25
82°
60°
26
84°
58°
27
85°
55°
28
84°
57°
29
90°
64°
30
90°
68°
1
88°
68°
2
89°
69°
3
82°
65°
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 82° to 90°, with overnight lows between 55° and 69°. The average high for September is 86° with an average low of 63°. 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.