S
M
T
W
T
F
S
28
85°
54°
29
87°
55°
30
86°
54°
1
94°
71°
2
94°
69°
3
90°
70°
4
85°
59°
5
85°
54°
6
85°
57°
7
81°
60°
8
88°
54°
9
87°
61°
10
83°
59°
11
81°
55°
12
85°
53°
13
87°
55°
14
96°
68°
15
86°
57°
16
82°
52°
17
76°
51°
18
80°
59°
19
78°
58°
20
80°
59°
21
79°
59°
22
78°
60°
23
77°
59°
24
79°
62°
25
81°
63°
26
78°
59°
27
81°
56°
28
74°
61°
29
76°
58°
30
74°
56°
31
75°
60°
1
77°
60°
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 96°, with overnight lows between 51° and 68°. The average high for July is 79° with an average low of 59°. 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.