S
M
T
W
T
F
S
30
89°
62°
31
90°
58°
1
82°
58°
2
80°
62°
3
83°
63°
4
84°
61°
5
85°
59°
6
84°
62°
7
86°
59°
8
85°
57°
9
85°
60°
10
79°
62°
11
85°
57°
12
80°
55°
13
79°
54°
14
79°
55°
15
80°
56°
16
83°
56°
17
83°
55°
18
78°
51°
19
77°
55°
20
77°
57°
21
76°
52°
22
77°
53°
23
81°
55°
24
80°
56°
25
81°
57°
26
80°
51°
27
80°
50°
28
74°
49°
29
75°
48°
30
74°
47°
1
Hist. Avg.
70°
44°
2
Hist. Avg.
69°
44°
3
Hist. Avg.
69°
43°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Hat Creek
Hat Creek's September 2026 forecast shows daily high temperatures ranging from 74° to 90°, with overnight lows between 47° and 63°. The average high for September is 81° with an average low of 56°. 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 Hat Creek. See also: October | November | December.
