S
M
T
W
T
F
S
26
63°
36°
27
65°
43°
28
65°
45°
29
71°
45°
30
76°
43°
1
81°
47°
2
85°
53°
3
84°
50°
4
83°
55°
5
80°
59°
6
82°
56°
7
76°
54°
8
76°
51°
9
76°
51°
10
74°
50°
11
76°
45°
12
81°
48°
13
69°
52°
14
67°
49°
15
60°
47°
16
58°
45°
17
63°
42°
18
70°
43°
19
73°
50°
20
73°
51°
21
76°
49°
22
83°
52°
23
87°
56°
24
86°
56°
25
80°
50°
26
67°
47°
27
73°
45°
28
79°
47°
29
80°
48°
30
77°
46°
31
78°
45°
1
80°
49°
2
82°
51°
3
77°
48°
4
77°
52°
5
72°
50°
6
72°
46°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Palouse Falls State Park
Palouse Falls State Park's May 2026 forecast shows daily high temperatures ranging from 67° to 87°, with overnight lows between 45° and 56°. The average high for May is 78° with an average low of 49°. 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 Palouse Falls State Park. See also: June | July | August.