S
M
T
W
T
F
S
28
74°
59°
29
74°
58°
30
73°
57°
1
70°
59°
2
73°
59°
3
74°
55°
4
71°
57°
5
70°
56°
6
71°
57°
7
72°
58°
8
71°
60°
9
71°
61°
10
72°
61°
11
77°
62°
12
77°
62°
13
78°
61°
14
78°
62°
15
77°
63°
16
77°
63°
17
73°
62°
18
73°
63°
19
74°
62°
20
76°
58°
21
75°
59°
22
76°
60°
23
76°
59°
24
77°
60°
25
76°
59°
26
77°
60°
27
76°
60°
28
76°
61°
29
78°
60°
30
77°
62°
31
78°
63°
1
78°
62°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
July Weather in Karuizawa
Karuizawa's July 2026 forecast shows daily high temperatures ranging from 70° to 78°, with overnight lows between 55° and 63°. The average high for July is 75° 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 Karuizawa. See also: August | September | October.