S
M
T
W
T
F
S
28
85°
54°
29
87°
55°
30
86°
54°
1
94°
71°
2
95°
70°
3
94°
67°
4
85°
57°
5
84°
58°
6
79°
59°
7
81°
59°
8
88°
60°
9
86°
61°
10
83°
60°
11
84°
60°
12
84°
59°
13
83°
59°
14
83°
62°
15
84°
61°
16
74°
55°
17
76°
59°
18
76°
57°
19
78°
58°
20
78°
62°
21
75°
62°
22
76°
61°
23
77°
62°
24
76°
62°
25
76°
61°
26
77°
60°
27
79°
60°
28
81°
61°
29
82°
62°
30
81°
63°
31
82°
62°
1
81°
61°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
July Weather in St. Johnsbury
St. Johnsbury's July 2026 forecast shows daily high temperatures ranging from 74° to 95°, with overnight lows between 55° and 70°. The average high for July is 81° with an average low of 61°. 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 St. Johnsbury. See also: August | September | October.