S
M
T
W
T
F
S
31
74°
51°
1
75°
50°
2
75°
51°
3
77°
53°
4
81°
56°
5
79°
53°
6
77°
53°
7
82°
54°
8
83°
54°
9
83°
53°
10
77°
53°
11
78°
54°
12
78°
53°
13
80°
53°
14
84°
55°
15
85°
56°
16
86°
55°
17
85°
53°
18
85°
52°
19
82°
57°
20
84°
57°
21
81°
54°
22
80°
52°
23
83°
52°
24
80°
55°
25
80°
55°
26
84°
54°
27
86°
54°
28
87°
53°
29
85°
55°
30
82°
54°
1
85°
55°
2
87°
58°
3
88°
57°
4
87°
53°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
June Weather in Napa
Napa's June 2026 forecast shows daily high temperatures ranging from 74° to 88°, with overnight lows between 50° and 58°. The average high for June is 82° with an average low of 54°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how June weather will actually feel in Napa. See also: July | August | September.
