S
M
T
W
T
F
S
30
85°
56°
31
84°
55°
1
85°
56°
2
84°
55°
3
85°
56°
4
79°
53°
5
80°
54°
6
80°
56°
7
81°
58°
8
80°
58°
9
86°
59°
10
86°
58°
11
84°
57°
12
81°
55°
13
78°
55°
14
77°
54°
15
76°
54°
16
77°
52°
17
76°
52°
18
77°
51°
19
78°
52°
20
76°
55°
21
77°
55°
22
83°
54°
23
83°
55°
24
81°
54°
25
82°
54°
26
82°
56°
27
81°
56°
28
76°
55°
29
77°
55°
30
79°
54°
1
79°
54°
2
81°
52°
3
79°
51°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Big Basin Redwoods State Park Headquarters
Big Basin Redwoods State Park Headquarters's September 2026 forecast shows daily high temperatures ranging from 76° to 86°, with overnight lows between 51° and 59°. The average high for September is 80° with an average low of 55°. 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 Big Basin Redwoods State Park Headquarters. See also: October | November | December.
