S
M
T
W
T
F
S
28
82°
56°
29
83°
55°
30
81°
60°
1
91°
66°
2
90°
66°
3
87°
71°
4
80°
66°
5
81°
63°
6
71°
62°
7
76°
55°
8
84°
63°
9
86°
67°
10
80°
59°
11
83°
57°
12
82°
58°
13
84°
62°
14
84°
58°
15
80°
59°
16
82°
55°
17
79°
58°
18
82°
59°
19
79°
59°
20
80°
58°
21
75°
53°
22
76°
54°
23
76°
54°
24
78°
55°
25
81°
61°
26
83°
61°
27
82°
60°
28
81°
61°
29
83°
62°
30
80°
62°
31
81°
61°
1
80°
61°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
July Weather in St. Johnsville
St. Johnsville's July 2026 forecast shows daily high temperatures ranging from 75° to 86°, with overnight lows between 53° and 67°. The average high for July is 81° 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. Johnsville. See also: August | September | October.