S
M
T
W
T
F
S
28
69°
54°
29
73°
49°
30
72°
54°
1
80°
55°
2
80°
55°
3
84°
58°
4
89°
61°
5
87°
57°
6
80°
59°
7
71°
54°
8
83°
60°
9
84°
56°
10
84°
58°
11
83°
56°
12
89°
61°
13
91°
59°
14
86°
56°
15
85°
58°
16
87°
57°
17
81°
61°
18
81°
59°
19
83°
62°
20
87°
63°
21
88°
63°
22
85°
62°
23
86°
63°
24
81°
63°
25
81°
62°
26
82°
63°
27
83°
63°
28
81°
62°
29
81°
62°
30
80°
60°
31
79°
56°
1
80°
62°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
July Weather in St. Marie
St. Marie's July 2026 forecast shows daily high temperatures ranging from 71° to 91°, with overnight lows between 54° and 63°. The average high for July is 83° with an average low of 60°. 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. Marie. See also: August | September | October.