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°
57°
31
87°
55°
1
91°
59°
2
92°
59°
3
92°
66°
4
95°
63°
5
95°
65°
6
84°
63°
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 ° to °, with overnight lows between ° and °. The average high for May is ° with an average low of °. 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.
