S
M
T
W
T
F
S
28
80°
68°
29
89°
66°
30
92°
68°
1
99°
73°
2
102°
77°
3
101°
78°
4
99°
71°
5
90°
71°
6
78°
70°
7
78°
67°
8
82°
70°
9
82°
70°
10
86°
67°
11
83°
63°
12
79°
61°
13
86°
64°
14
86°
63°
15
88°
65°
16
90°
65°
17
84°
64°
18
81°
64°
19
83°
65°
20
82°
63°
21
78°
59°
22
79°
59°
23
80°
60°
24
80°
62°
25
81°
62°
26
82°
65°
27
82°
65°
28
86°
66°
29
85°
66°
30
83°
65°
31
85°
66°
1
86°
65°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
July Weather in Duncannon
Duncannon's July 2026 forecast shows daily high temperatures ranging from 78° to 90°, with overnight lows between 59° and 70°. The average high for July is 83° with an average low of 64°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how July weather will actually feel in Duncannon. See also: August | September | October.
