S
M
T
W
T
F
S
30
73°
64°
31
84°
65°
1
80°
50°
2
83°
48°
3
85°
51°
4
80°
61°
5
78°
63°
6
84°
63°
7
78°
65°
8
83°
59°
9
71°
47°
10
82°
44°
11
82°
59°
12
62°
43°
13
64°
36°
14
58°
33°
15
66°
44°
16
69°
35°
17
67°
46°
18
66°
47°
19
68°
55°
20
64°
44°
21
61°
34°
22
64°
36°
23
N/A
24
59°
53°
25
64°
57°
26
62°
57°
27
72°
46°
28
67°
38°
29
72°
53°
30
75°
43°
1
61°
36°
2
58°
45°
3
56°
40°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Itasca State Park
Itasca State Park's September 2026 forecast shows daily high temperatures ranging from 56° to 75°, with overnight lows between 36° and 53°. The average high for September is 64° with an average low of 43°. 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 Itasca State Park. See also: October | November | December.
