S
M
T
W
T
F
S
28
81°
58°
29
79°
59°
30
79°
59°
1
81°
64°
2
83°
67°
3
87°
68°
4
88°
68°
5
90°
66°
6
91°
61°
7
82°
63°
8
86°
66°
9
90°
66°
10
91°
65°
11
88°
59°
12
85°
56°
13
80°
58°
14
79°
58°
15
82°
59°
16
82°
59°
17
87°
60°
18
85°
60°
19
87°
64°
20
84°
66°
21
87°
60°
22
85°
67°
23
87°
60°
24
90°
58°
25
90°
67°
26
92°
66°
27
Hist. Avg.
85°
62°
28
Hist. Avg.
85°
62°
29
Hist. Avg.
85°
62°
30
Hist. Avg.
85°
62°
31
Hist. Avg.
85°
62°
1
Hist. Avg.
85°
62°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
July Weather in Fullerton
Fullerton's July 2026 forecast shows daily high temperatures ranging from 79° to 92°, with overnight lows between 56° and 68°. The average high for July is 85° with an average low of 62°. 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 Fullerton. See also: August | September | October.
