S
M
T
W
T
F
S
26
65°
51°
27
68°
44°
28
74°
49°
29
80°
50°
30
85°
53°
1
83°
56°
2
80°
58°
3
66°
54°
4
61°
54°
5
67°
54°
6
75°
60°
7
83°
57°
8
86°
58°
9
89°
61°
10
89°
61°
11
94°
63°
12
92°
62°
13
82°
57°
14
88°
54°
15
88°
57°
16
81°
62°
17
76°
59°
18
80°
56°
19
85°
56°
20
91°
56°
21
92°
59°
22
92°
61°
23
87°
58°
24
87°
56°
25
79°
56°
26
70°
52°
27
70°
50°
28
73°
56°
29
72°
57°
30
80°
56°
31
87°
60°
1
91°
61°
2
91°
61°
3
88°
63°
4
96°
64°
5
93°
61°
6
88°
60°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Thermalito
Thermalito's May 2026 forecast shows daily high temperatures ranging from 80° to 96°, with overnight lows between 56° and 64°. The average high for May is 89° with an average low of 61°. 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 Thermalito. See also: June | July | August.
