S
M
T
W
T
F
S
30
68°
63°
31
75°
64°
1
86°
67°
2
84°
65°
3
81°
62°
4
72°
58°
5
76°
56°
6
75°
54°
7
76°
50°
8
77°
51°
9
74°
63°
10
76°
50°
11
72°
46°
12
79°
48°
13
79°
53°
14
67°
45°
15
72°
45°
16
78°
59°
17
74°
52°
18
70°
48°
19
64°
53°
20
65°
46°
21
62°
45°
22
59°
51°
23
61°
51°
24
65°
50°
25
66°
49°
26
65°
47°
27
68°
52°
28
70°
51°
29
68°
49°
30
65°
42°
1
64°
49°
2
59°
47°
3
57°
48°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Roseville
Roseville's September 2026 forecast shows daily high temperatures ranging from 57° to 74°, with overnight lows between 42° and 53°. The average high for September is 65° with an average low of 49°. 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 Roseville. See also: October | November | December.
