S
M
T
W
T
F
S
30
75°
60°
31
75°
58°
1
74°
57°
2
74°
56°
3
71°
54°
4
68°
57°
5
66°
50°
6
67°
56°
7
64°
56°
8
68°
55°
9
72°
57°
10
64°
52°
11
63°
56°
12
64°
55°
13
63°
56°
14
70°
55°
15
71°
50°
16
63°
48°
17
62°
53°
18
65°
50°
19
68°
48°
20
Hist. Avg.
63°
48°
21
Hist. Avg.
63°
48°
22
Hist. Avg.
63°
47°
23
Hist. Avg.
63°
47°
24
Hist. Avg.
62°
47°
25
Hist. Avg.
62°
47°
26
Hist. Avg.
62°
47°
27
Hist. Avg.
61°
46°
28
Hist. Avg.
61°
46°
29
Hist. Avg.
61°
46°
30
Hist. Avg.
60°
46°
1
Hist. Avg.
60°
46°
2
Hist. Avg.
60°
46°
3
Hist. Avg.
60°
45°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Roberts Creek
Roberts Creek's September 2026 forecast shows daily high temperatures ranging from 62° to 75°, with overnight lows between 48° and 60°. The average high for September is 68° with an average low of 54°. 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 Roberts Creek. See also: October | November | December.
