S
M
T
W
T
F
S
28
58°
43°
29
59°
44°
30
60°
48°
1
65°
45°
2
66°
44°
3
60°
48°
4
65°
47°
5
66°
50°
6
68°
51°
7
68°
50°
8
67°
50°
9
Hist. Avg.
63°
49°
10
Hist. Avg.
63°
49°
11
Hist. Avg.
63°
49°
12
Hist. Avg.
63°
49°
13
Hist. Avg.
64°
50°
14
Hist. Avg.
64°
50°
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 58° to 68°, with overnight lows between 43° and 51°. The average high for July is 64° with an average low of 47°. 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.