S
M
T
W
T
F
S
30
84°
60°
31
85°
59°
1
86°
61°
2
87°
57°
3
83°
56°
4
83°
56°
5
84°
57°
6
84°
57°
7
86°
56°
8
88°
56°
9
87°
58°
10
87°
58°
11
86°
57°
12
86°
60°
13
87°
59°
14
88°
55°
15
85°
58°
16
84°
58°
17
81°
55°
18
80°
55°
19
80°
54°
20
79°
53°
21
77°
53°
22
79°
54°
23
80°
55°
24
79°
56°
25
84°
53°
26
83°
54°
27
83°
53°
28
82°
50°
29
78°
50°
30
78°
54°
1
81°
55°
2
84°
56°
3
85°
54°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Humboldt
Humboldt's September 2026 forecast shows daily high temperatures ranging from 77° to 88°, with overnight lows between 50° and 61°. The average high for September is 83° 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 Humboldt. See also: October | November | December.
