S
M
T
W
T
F
S
26
55°
35°
27
59°
34°
28
62°
39°
29
66°
37°
30
71°
37°
1
75°
37°
2
78°
45°
3
77°
42°
4
76°
47°
5
72°
48°
6
77°
43°
7
72°
47°
8
69°
49°
9
71°
46°
10
72°
43°
11
73°
46°
12
81°
44°
13
66°
46°
14
60°
43°
15
57°
37°
16
51°
39°
17
59°
36°
18
63°
41°
19
67°
44°
20
72°
47°
21
71°
42°
22
75°
47°
23
80°
44°
24
76°
52°
25
81°
47°
26
59°
49°
27
77°
52°
28
90°
58°
29
75°
50°
30
68°
49°
31
68°
46°
1
71°
47°
2
71°
50°
3
75°
51°
4
72°
50°
5
73°
49°
6
64°
44°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Post Falls-Rathdrum
Post Falls-Rathdrum's May 2026 forecast shows daily high temperatures ranging from 64° to 75°, with overnight lows between 44° and 51°. The average high for May is 71° with an average low of 48°. 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 Post Falls-Rathdrum. See also: June | July | August.
