S
M
T
W
T
F
S
30
86°
64°
31
88°
58°
1
88°
55°
2
79°
60°
3
80°
63°
4
87°
62°
5
87°
53°
6
84°
54°
7
79°
61°
8
83°
60°
9
85°
54°
10
79°
58°
11
76°
54°
12
77°
51°
13
75°
50°
14
75°
50°
15
76°
55°
16
76°
58°
17
82°
59°
18
83°
59°
19
83°
55°
20
77°
56°
21
82°
57°
22
79°
48°
23
83°
48°
24
73°
47°
25
71°
47°
26
72°
46°
27
82°
55°
28
81°
56°
29
Hist. Avg.
75°
49°
30
Hist. Avg.
74°
49°
1
Hist. Avg.
74°
49°
2
Hist. Avg.
74°
48°
3
Hist. Avg.
73°
48°
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 71° to 88°, with overnight lows between 46° and 64°. 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 Humboldt. See also: October | November | December.
