S
M
T
W
T
F
S
28
89°
70°
29
91°
71°
30
N/A
1
94°
70°
2
96°
70°
3
95°
68°
4
94°
68°
5
91°
68°
6
89°
67°
7
88°
66°
8
87°
65°
9
87°
67°
10
85°
67°
11
84°
66°
12
86°
69°
13
85°
68°
14
86°
65°
15
82°
62°
16
83°
63°
17
81°
62°
18
81°
63°
19
86°
68°
20
87°
69°
21
86°
68°
22
83°
68°
23
87°
69°
24
88°
70°
25
88°
69°
26
87°
69°
27
88°
70°
28
87°
69°
29
88°
69°
30
89°
70°
31
88°
69°
1
84°
68°
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 81° to 96°, with overnight lows between 62° and 70°. The average high for July is 87° with an average low of 67°. 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.
