S
M
T
W
T
F
S
27
N/A
28
74°
47°
29
78°
45°
30
82°
48°
1
89°
59°
2
74°
48°
3
69°
44°
4
73°
44°
5
68°
40°
6
67°
44°
7
77°
53°
8
71°
44°
9
74°
48°
10
77°
51°
11
74°
53°
12
77°
56°
13
76°
43°
14
65°
43°
15
66°
42°
16
63°
43°
17
61°
42°
18
70°
47°
19
59°
39°
20
62°
41°
21
60°
45°
22
58°
38°
23
60°
42°
24
58°
39°
25
55°
36°
26
55°
39°
27
54°
35°
28
54°
36°
29
59°
44°
30
64°
45°
31
65°
46°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
October Weather in Irwin
Irwin's October 2026 forecast shows daily high temperatures ranging from 54° to 77°, with overnight lows between 35° and 56°. The average high for October is 65° with an average low of 44°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how October weather will actually feel in Irwin. See also: November | December | January.