S
M
T
W
T
F
S
30
71°
58°
31
71°
53°
1
70°
51°
2
64°
56°
3
64°
52°
4
68°
50°
5
62°
51°
6
63°
56°
7
68°
56°
8
68°
55°
9
69°
56°
10
68°
55°
11
67°
54°
12
68°
54°
13
67°
55°
14
68°
53°
15
68°
51°
16
66°
48°
17
59°
50°
18
62°
52°
19
65°
51°
20
64°
50°
21
65°
50°
22
58°
48°
23
61°
50°
24
63°
49°
25
60°
48°
26
57°
45°
27
56°
48°
28
62°
44°
29
58°
43°
30
55°
42°
1
56°
46°
2
56°
41°
3
54°
41°
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 54° to 71°, with overnight lows between 41° and 58°. The average high for September is 63° with an average low of 50°. 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.
