S
M
T
W
T
F
S
26
63°
51°
27
69°
49°
28
77°
47°
29
81°
49°
30
87°
50°
1
83°
53°
2
82°
58°
3
72°
55°
4
66°
54°
5
68°
54°
6
77°
60°
7
82°
58°
8
87°
60°
9
94°
60°
10
90°
58°
11
94°
63°
12
93°
61°
13
83°
53°
14
92°
59°
15
87°
64°
16
78°
59°
17
76°
57°
18
83°
59°
19
88°
55°
20
92°
57°
21
95°
57°
22
96°
62°
23
83°
60°
24
85°
60°
25
82°
53°
26
75°
54°
27
79°
54°
28
84°
60°
29
83°
60°
30
84°
57°
31
85°
59°
1
90°
62°
2
93°
64°
3
91°
65°
4
92°
66°
5
84°
60°
6
88°
64°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Shasta Lake
Shasta Lake's May 2026 forecast shows daily high temperatures ranging from 75° to 93°, with overnight lows between 53° and 66°. The average high for May is 85° with an average low of 60°. 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 Shasta Lake. See also: June | July | August.
