S
M
T
W
T
F
S
30
75°
68°
31
84°
71°
1
94°
74°
2
98°
71°
3
84°
68°
4
78°
68°
5
80°
63°
6
78°
60°
7
78°
59°
8
82°
61°
9
77°
70°
10
82°
61°
11
76°
58°
12
82°
63°
13
80°
59°
14
69°
52°
15
79°
66°
16
72°
62°
17
73°
59°
18
75°
57°
19
68°
59°
20
69°
57°
21
70°
58°
22
70°
59°
23
74°
60°
24
72°
54°
25
70°
54°
26
71°
55°
27
69°
56°
28
68°
49°
29
70°
55°
30
67°
56°
1
71°
55°
2
72°
54°
3
69°
54°
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 67° to 79°, with overnight lows between 49° and 66°. The average high for September is 71° with an average low of 57°. 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.
