S
M
T
W
T
F
S
26
95°
65°
27
95°
66°
28
96°
63°
29
95°
65°
30
93°
63°
31
92°
63°
1
92°
65°
2
93°
66°
3
93°
66°
4
95°
65°
5
96°
67°
6
97°
67°
7
96°
66°
8
96°
66°
9
91°
65°
10
90°
65°
11
90°
63°
12
92°
63°
13
91°
64°
14
92°
62°
15
93°
63°
16
94°
63°
17
93°
66°
18
97°
66°
19
97°
65°
20
98°
66°
21
98°
66°
22
97°
65°
23
97°
63°
24
93°
61°
25
91°
60°
26
92°
62°
27
96°
65°
28
98°
66°
29
99°
67°
30
98°
66°
31
99°
64°
1
97°
63°
2
95°
62°
3
96°
65°
4
97°
63°
5
96°
61°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Norco
Norco's August 2026 forecast shows daily high temperatures ranging from 90° to 99°, with overnight lows between 60° and 67°. The average high for August is 95° with an average low of 64°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how August weather will actually feel in Norco. See also: September | October | November.