S
M
T
W
T
F
S
30
90°
59°
31
75°
59°
1
77°
57°
2
77°
59°
3
73°
61°
4
79°
59°
5
82°
54°
6
84°
57°
7
88°
55°
8
95°
55°
9
102°
63°
10
104°
72°
11
91°
63°
12
90°
63°
13
81°
55°
14
86°
54°
15
88°
59°
16
79°
59°
17
75°
57°
18
84°
55°
19
90°
57°
20
82°
59°
21
82°
56°
22
84°
54°
23
93°
62°
24
96°
62°
25
86°
58°
26
84°
57°
27
81°
55°
28
84°
59°
29
87°
58°
30
84°
57°
1
85°
58°
2
83°
56°
3
87°
59°
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 81° to 96°, with overnight lows between 54° and 62°. The average high for September is 86° with an average low of 58°. 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.
