S
M
T
W
T
F
S
26
52°
37°
27
56°
31°
28
62°
27°
29
68°
26°
30
71°
27°
1
71°
43°
2
69°
44°
3
69°
44°
4
62°
40°
5
71°
41°
6
76°
47°
7
76°
47°
8
68°
46°
9
67°
44°
10
77°
45°
11
74°
45°
12
75°
45°
13
76°
46°
14
68°
40°
15
62°
42°
16
64°
43°
17
63°
44°
18
62°
44°
19
61°
41°
20
63°
43°
21
67°
43°
22
67°
46°
23
65°
44°
24
67°
46°
25
71°
48°
26
75°
49°
27
76°
48°
28
75°
49°
29
73°
49°
30
74°
48°
31
68°
47°
1
68°
47°
2
73°
50°
3
75°
50°
4
71°
49°
5
73°
51°
6
69°
50°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Surprise Valley
Surprise Valley's May 2026 forecast shows daily high temperatures ranging from 61° to 77°, with overnight lows between 40° and 51°. The average high for May is 70° with an average low of 46°. 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 Surprise Valley. See also: June | July | August.
