S
M
T
W
T
F
S
31
83°
49°
1
86°
52°
2
86°
52°
3
85°
51°
4
81°
55°
5
83°
55°
6
77°
53°
7
78°
48°
8
81°
52°
9
82°
57°
10
89°
50°
11
98°
56°
12
92°
57°
13
87°
57°
14
87°
57°
15
86°
56°
16
78°
55°
17
76°
57°
18
74°
58°
19
75°
59°
20
79°
59°
21
79°
54°
22
75°
54°
23
76°
53°
24
76°
53°
25
75°
55°
26
77°
55°
27
77°
57°
28
84°
51°
29
85°
56°
30
85°
58°
1
73°
56°
2
76°
52°
3
84°
52°
4
82°
54°
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 82° to 84°, with overnight lows between 52° and 54°. The average high for June is 83° with an average low of 53°. 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.
