S
M
T
W
T
F
S
27
92°
66°
28
87°
60°
29
86°
61°
30
86°
60°
1
90°
62°
2
90°
64°
3
87°
57°
4
86°
58°
5
91°
63°
6
93°
63°
7
92°
61°
8
93°
62°
9
92°
61°
10
93°
61°
11
92°
62°
12
92°
62°
13
91°
61°
14
90°
60°
15
84°
53°
16
83°
54°
17
84°
56°
18
83°
54°
19
81°
52°
20
80°
51°
21
86°
58°
22
88°
56°
23
88°
56°
24
84°
53°
25
83°
52°
26
85°
52°
27
83°
47°
28
79°
47°
29
80°
43°
30
80°
44°
31
78°
45°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
October Weather in Green Valley
Green Valley's October 2026 forecast shows daily high temperatures ranging from 78° to 93°, with overnight lows between 43° and 66°. The average high for October is 87° 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 October weather will actually feel in Green Valley. See also: November | December | January.