S
M
T
W
T
F
S
28
81°
65°
29
85°
64°
30
87°
66°
1
93°
70°
2
98°
79°
3
97°
76°
4
91°
68°
5
78°
66°
6
68°
64°
7
71°
63°
8
80°
64°
9
84°
68°
10
86°
67°
11
85°
62°
12
79°
64°
13
82°
63°
14
82°
62°
15
85°
63°
16
86°
63°
17
87°
61°
18
80°
61°
19
85°
63°
20
81°
59°
21
79°
60°
22
79°
59°
23
82°
59°
24
84°
60°
25
84°
61°
26
86°
62°
27
85°
65°
28
87°
66°
29
87°
66°
30
86°
65°
31
85°
66°
1
86°
66°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
July Weather in Jefferson Valley-Yorktown
Jefferson Valley-Yorktown's July 2026 forecast shows daily high temperatures ranging from 68° to 91°, with overnight lows between 59° and 68°. The average high for July is 83° with an average low of 63°. 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 Jefferson Valley-Yorktown. See also: August | September | October.