S
M
T
W
T
F
S
28
63°
50°
29
64°
51°
30
72°
53°
1
78°
55°
2
81°
57°
3
83°
55°
4
84°
56°
5
86°
60°
6
90°
63°
7
90°
63°
8
89°
60°
9
87°
57°
10
85°
56°
11
87°
63°
12
88°
64°
13
79°
62°
14
80°
62°
15
83°
61°
16
87°
63°
17
88°
63°
18
88°
62°
19
89°
64°
20
89°
64°
21
90°
65°
22
91°
64°
23
91°
64°
24
87°
63°
25
90°
64°
26
87°
60°
27
81°
63°
28
90°
64°
29
91°
65°
30
92°
66°
31
91°
65°
1
90°
64°
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 63° to 92°, with overnight lows between 50° and 66°. The average high for July is 85° with an average low of 61°. 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.