S
M
T
W
T
F
S
30
89°
67°
31
87°
63°
1
84°
61°
2
85°
60°
3
83°
60°
4
83°
59°
5
84°
60°
6
84°
63°
7
86°
62°
8
86°
60°
9
85°
64°
10
88°
64°
11
84°
63°
12
85°
64°
13
87°
64°
14
87°
63°
15
88°
63°
16
87°
62°
17
86°
63°
18
86°
62°
19
85°
61°
20
85°
60°
21
84°
54°
22
79°
53°
23
79°
59°
24
81°
60°
25
Hist. Avg.
81°
56°
26
Hist. Avg.
81°
56°
27
Hist. Avg.
80°
55°
28
Hist. Avg.
80°
55°
29
Hist. Avg.
80°
55°
30
Hist. Avg.
79°
54°
1
Hist. Avg.
79°
54°
2
Hist. Avg.
79°
54°
3
Hist. Avg.
78°
53°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Humboldt
Humboldt's September 2026 forecast shows daily high temperatures ranging from 79° to 89°, with overnight lows between 53° and 67°. The average high for September is 85° with an average low of 61°. 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 Humboldt. See also: October | November | December.
