S
M
T
W
T
F
S
28
93°
75°
29
93°
75°
30
91°
73°
1
95°
73°
2
90°
73°
3
93°
73°
4
95°
73°
5
95°
73°
6
95°
72°
7
91°
72°
8
92°
73°
9
94°
74°
10
91°
73°
11
90°
74°
12
87°
72°
13
81°
69°
14
85°
69°
15
88°
71°
16
90°
70°
17
91°
72°
18
93°
72°
19
95°
72°
20
92°
73°
21
93°
70°
22
92°
72°
23
93°
73°
24
93°
73°
25
92°
73°
26
93°
72°
27
93°
73°
28
92°
73°
29
93°
72°
30
93°
73°
31
92°
73°
1
94°
74°
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 95°, with overnight lows between 69° and 74°. The average high for July is 91° with an average low of 72°. 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.