S
M
T
W
T
F
S
28
84°
51°
29
85°
56°
30
85°
58°
1
73°
56°
2
76°
52°
3
79°
52°
4
79°
53°
5
79°
53°
6
76°
55°
7
76°
55°
8
76°
54°
9
81°
55°
10
79°
54°
11
81°
51°
12
87°
60°
13
92°
60°
14
93°
60°
15
99°
60°
16
90°
57°
17
83°
56°
18
79°
56°
19
79°
53°
20
84°
53°
21
93°
54°
22
94°
53°
23
83°
55°
24
85°
54°
25
87°
53°
26
82°
51°
27
86°
53°
28
84°
54°
29
84°
59°
30
83°
56°
31
87°
55°
1
87°
55°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
July Weather in Napa
Napa's July 2026 forecast shows daily high temperatures ranging from ° to °, with overnight lows between ° and °. The average high for July is ° with an average low of °. 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 Napa. See also: August | September | October.
