S
M
T
W
T
F
S
26
80°
53°
27
83°
62°
28
66°
54°
29
67°
48°
30
66°
41°
1
64°
43°
2
62°
44°
3
75°
42°
4
78°
57°
5
69°
47°
6
64°
44°
7
68°
40°
8
78°
49°
9
82°
56°
10
71°
53°
11
77°
45°
12
82°
51°
13
74°
54°
14
73°
47°
15
82°
54°
16
81°
69°
17
87°
64°
18
79°
65°
19
81°
58°
20
68°
53°
21
73°
58°
22
70°
61°
23
77°
61°
24
78°
61°
25
79°
62°
26
78°
64°
27
80°
63°
28
82°
66°
29
81°
64°
30
83°
64°
31
84°
63°
1
82°
60°
2
84°
64°
3
78°
60°
4
77°
57°
5
80°
64°
6
86°
66°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Pontiac
Pontiac's May 2026 forecast shows daily high temperatures ranging from 68° to 86°, with overnight lows between 53° and 66°. The average high for May is 79° 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 May weather will actually feel in Pontiac. See also: June | July | August.
