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
81°
67°
8
84°
69°
9
81°
70°
10
86°
67°
11
86°
63°
12
84°
63°
13
84°
61°
14
90°
66°
15
88°
65°
16
90°
64°
17
87°
64°
18
86°
64°
19
85°
63°
20
85°
64°
21
84°
63°
22
79°
59°
23
80°
60°
24
87°
66°
25
86°
65°
26
85°
66°
27
87°
66°
28
86°
66°
29
87°
66°
30
86°
65°
31
82°
64°
1
82°
64°
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 79° to 90°, with overnight lows between 59° and 70°. The average high for July is 85° with an average low of 65°. 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.
