S
M
T
W
T
F
S
28
89°
70°
29
91°
71°
30
93°
70°
1
94°
69°
2
93°
69°
3
93°
68°
4
89°
67°
5
90°
69°
6
83°
69°
7
80°
67°
8
86°
67°
9
85°
68°
10
83°
66°
11
76°
65°
12
79°
63°
13
80°
62°
14
81°
63°
15
79°
64°
16
80°
66°
17
83°
65°
18
84°
66°
19
82°
65°
20
86°
67°
21
84°
66°
22
84°
66°
23
83°
67°
24
84°
67°
25
79°
66°
26
79°
65°
27
80°
67°
28
80°
66°
29
81°
67°
30
81°
67°
31
82°
66°
1
83°
67°
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 76° to 86°, with overnight lows between 62° and 69°. The average high for July is 82° with an average low of 66°. 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.
