S
M
T
W
T
F
S
28
86°
61°
29
92°
64°
30
91°
72°
1
98°
72°
2
101°
80°
3
102°
78°
4
100°
74°
5
95°
71°
6
77°
66°
7
80°
67°
8
84°
67°
9
87°
66°
10
89°
65°
11
88°
67°
12
88°
66°
13
87°
67°
14
87°
68°
15
86°
66°
16
82°
62°
17
84°
65°
18
83°
66°
19
87°
68°
20
87°
69°
21
83°
68°
22
82°
68°
23
83°
67°
24
83°
68°
25
84°
68°
26
85°
67°
27
86°
69°
28
86°
68°
29
85°
69°
30
88°
70°
31
88°
70°
1
89°
69°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
July Weather in Jamesburg
Jamesburg's July 2026 forecast shows daily high temperatures ranging from 77° to 102°, with overnight lows between 62° and 80°. The average high for July is 87° with an average low of 68°. 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 Jamesburg. See also: August | September | October.