S
M
T
W
T
F
S
28
83°
69°
29
91°
66°
30
94°
68°
1
95°
70°
2
96°
70°
3
97°
69°
4
95°
68°
5
92°
68°
6
88°
67°
7
85°
68°
8
86°
63°
9
83°
65°
10
84°
64°
11
83°
65°
12
84°
66°
13
82°
64°
14
85°
64°
15
82°
63°
16
82°
62°
17
83°
61°
18
84°
64°
19
87°
65°
20
87°
65°
21
86°
66°
22
85°
66°
23
85°
67°
24
84°
67°
25
83°
66°
26
85°
67°
27
84°
67°
28
82°
66°
29
82°
67°
30
83°
64°
31
82°
61°
1
81°
62°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
July Weather in Jonesborough
Jonesborough's July 2026 forecast shows daily high temperatures ranging from 81° to 97°, with overnight lows between 61° and 70°. The average high for July is 86° 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 Jonesborough. See also: August | September | October.