S
M
T
W
T
F
S
28
59°
29°
29
61°
35°
30
63°
32°
1
59°
35°
2
61°
33°
3
61°
33°
4
59°
30°
5
61°
33°
6
62°
32°
7
59°
36°
8
65°
35°
9
64°
35°
10
62°
36°
11
66°
37°
12
65°
36°
13
64°
37°
14
65°
36°
15
62°
37°
16
58°
35°
17
56°
34°
18
56°
31°
19
Hist. Avg.
69°
37°
20
Hist. Avg.
69°
37°
21
Hist. Avg.
69°
37°
22
Hist. Avg.
69°
37°
23
Hist. Avg.
69°
37°
24
Hist. Avg.
69°
37°
25
Hist. Avg.
69°
37°
26
Hist. Avg.
68°
37°
27
Hist. Avg.
68°
37°
28
Hist. Avg.
68°
37°
29
Hist. Avg.
68°
37°
30
Hist. Avg.
68°
37°
31
Hist. Avg.
68°
37°
1
Hist. Avg.
68°
37°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
July Weather in St. Mary's
St. Mary's's July 2026 forecast shows daily high temperatures ranging from 56° to 66°, with overnight lows between 29° and 37°. The average high for July is 61° with an average low of 34°. 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. Mary's. See also: August | September | October.