S
M
T
W
T
F
S
28
64°
47°
29
65°
47°
30
62°
45°
1
61°
47°
2
63°
47°
3
59°
49°
4
61°
49°
5
66°
48°
6
63°
49°
7
64°
48°
8
64°
48°
9
63°
47°
10
67°
51°
11
68°
50°
12
63°
48°
13
61°
53°
14
61°
54°
15
Hist. Avg.
64°
50°
16
Hist. Avg.
64°
50°
17
Hist. Avg.
64°
50°
18
Hist. Avg.
65°
51°
19
Hist. Avg.
65°
51°
20
Hist. Avg.
65°
51°
21
Hist. Avg.
65°
51°
22
Hist. Avg.
65°
51°
23
Hist. Avg.
65°
51°
24
Hist. Avg.
65°
52°
25
Hist. Avg.
66°
52°
26
Hist. Avg.
66°
52°
27
Hist. Avg.
66°
52°
28
Hist. Avg.
66°
52°
29
Hist. Avg.
66°
52°
30
Hist. Avg.
66°
52°
31
Hist. Avg.
66°
52°
1
Hist. Avg.
66°
52°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
July Weather in St. John's Bay
St. John's Bay's July 2026 forecast shows daily high temperatures ranging from 59° to 68°, with overnight lows between 45° and 54°. The average high for July is 63° with an average low of 49°. 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. John's Bay. See also: August | September | October.