S
M
T
W
T
F
S
28
80°
59°
29
84°
63°
30
88°
67°
1
90°
72°
2
89°
71°
3
88°
72°
4
81°
67°
5
76°
66°
6
74°
66°
7
78°
66°
8
78°
65°
9
82°
61°
10
78°
65°
11
82°
55°
12
84°
62°
13
86°
63°
14
90°
68°
15
90°
67°
16
85°
63°
17
82°
61°
18
81°
63°
19
80°
59°
20
79°
59°
21
78°
60°
22
80°
61°
23
82°
63°
24
81°
57°
25
83°
62°
26
83°
63°
27
76°
58°
28
78°
58°
29
76°
56°
30
75°
60°
31
76°
60°
1
78°
59°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
July Weather in Jamestown
Jamestown's July 2026 forecast shows daily high temperatures ranging from 75° to 90°, with overnight lows between 55° and 68°. The average high for July is 81° with an average low of 61°. 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 Jamestown. See also: August | September | October.
