S
M
T
W
T
F
S
26
57°
41°
27
69°
38°
28
58°
42°
29
59°
47°
30
63°
47°
1
62°
37°
2
59°
44°
3
59°
38°
4
70°
44°
5
79°
57°
6
67°
54°
7
63°
49°
8
67°
40°
9
60°
49°
10
74°
46°
11
60°
47°
12
65°
42°
13
69°
51°
14
60°
45°
15
67°
48°
16
78°
61°
17
85°
62°
18
88°
66°
19
92°
64°
20
85°
61°
21
71°
53°
22
67°
51°
23
69°
51°
24
74°
55°
25
75°
57°
26
79°
60°
27
81°
54°
28
75°
55°
29
69°
56°
30
71°
58°
31
75°
56°
1
71°
54°
2
71°
52°
3
70°
52°
4
71°
53°
5
73°
60°
6
80°
61°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Upland
Upland's May 2026 forecast shows daily high temperatures ranging from 60° to 92°, with overnight lows between 45° and 66°. The average high for May is 75° with an average low of 56°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how May weather will actually feel in Upland. See also: June | July | August.
