S
M
T
W
T
F
S
30
82°
55°
31
77°
61°
1
76°
57°
2
80°
62°
3
83°
64°
4
86°
59°
5
84°
55°
6
78°
53°
7
77°
52°
8
77°
59°
9
79°
56°
10
75°
53°
11
73°
49°
12
72°
48°
13
74°
54°
14
73°
48°
15
72°
47°
16
71°
47°
17
70°
48°
18
70°
47°
19
69°
46°
20
69°
46°
21
70°
47°
22
71°
49°
23
72°
53°
24
74°
53°
25
77°
52°
26
76°
45°
27
73°
48°
28
68°
53°
29
67°
49°
30
74°
49°
1
69°
50°
2
66°
44°
3
64°
49°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Deer Grove
Deer Grove's September 2026 forecast shows daily high temperatures ranging from 64° to 86°, with overnight lows between 44° and 64°. The average high for September is 74° 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 Deer Grove. See also: October | November | December.
