S
M
T
W
T
F
S
28
75°
52°
29
76°
54°
30
77°
49°
1
76°
49°
2
75°
50°
3
74°
49°
4
77°
50°
5
77°
50°
6
76°
51°
7
77°
57°
8
78°
58°
9
79°
59°
10
80°
62°
11
81°
51°
12
78°
51°
13
76°
52°
14
76°
52°
15
72°
51°
16
71°
52°
17
Hist. Avg.
78°
48°
18
Hist. Avg.
78°
48°
19
Hist. Avg.
78°
48°
20
Hist. Avg.
78°
48°
21
Hist. Avg.
78°
48°
22
Hist. Avg.
78°
48°
23
Hist. Avg.
78°
48°
24
Hist. Avg.
79°
48°
25
Hist. Avg.
79°
48°
26
Hist. Avg.
79°
48°
27
Hist. Avg.
79°
48°
28
Hist. Avg.
79°
48°
29
Hist. Avg.
79°
48°
30
Hist. Avg.
79°
48°
31
Hist. Avg.
79°
48°
1
Hist. Avg.
79°
48°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
July Weather in John Sam Lake
John Sam Lake's July 2026 forecast shows daily high temperatures ranging from 71° to 81°, with overnight lows between 49° and 62°. The average high for July is 76° with an average low of 53°. 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 John Sam Lake. See also: August | September | October.