S
M
T
W
T
F
S
26
92°
66°
27
95°
65°
28
95°
64°
29
90°
65°
30
93°
64°
31
95°
66°
1
94°
65°
2
93°
66°
3
94°
66°
4
95°
67°
5
95°
66°
6
94°
66°
7
95°
65°
8
95°
66°
9
94°
65°
10
95°
64°
11
89°
64°
12
91°
63°
13
91°
61°
14
89°
62°
15
89°
64°
16
91°
65°
17
94°
64°
18
94°
65°
19
93°
64°
20
95°
66°
21
91°
65°
22
89°
65°
23
91°
64°
24
90°
65°
25
89°
62°
26
88°
60°
27
87°
59°
28
88°
65°
29
89°
65°
30
89°
64°
31
91°
63°
1
91°
62°
2
92°
61°
3
91°
60°
4
89°
58°
5
89°
58°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Upland
Upland's August 2026 forecast shows daily high temperatures ranging from 87° to 95°, with overnight lows between 58° and 67°. The average high for August is 92° 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 Upland. See also: September | October | November.
