S
M
T
W
T
F
S
30
88°
68°
31
94°
68°
1
88°
65°
2
83°
67°
3
90°
71°
4
89°
71°
5
87°
69°
6
85°
62°
7
78°
63°
8
77°
61°
9
76°
60°
10
77°
55°
11
73°
56°
12
72°
55°
13
73°
56°
14
72°
53°
15
77°
58°
16
74°
54°
17
74°
58°
18
76°
58°
19
73°
55°
20
73°
57°
21
75°
58°
22
76°
58°
23
76°
57°
24
75°
58°
25
75°
57°
26
74°
55°
27
75°
56°
28
75°
55°
29
74°
54°
30
74°
56°
1
73°
56°
2
74°
54°
3
72°
53°
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 72° to 90°, with overnight lows between 53° and 71°. The average high for September is 77° with an average low of 59°. 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.
