S
M
T
W
T
F
S
29
45°
37°
30
47°
27°
31
51°
26°
1
43°
36°
2
44°
37°
3
53°
31°
4
61°
29°
5
67°
37°
6
72°
41°
7
62°
32°
8
63°
35°
9
66°
36°
10
70°
47°
11
62°
42°
12
54°
42°
13
54°
42°
14
56°
37°
15
60°
41°
16
60°
40°
17
64°
42°
18
64°
41°
19
61°
39°
20
58°
37°
21
52°
36°
22
52°
33°
23
51°
33°
24
54°
35°
25
54°
36°
26
58°
37°
27
62°
38°
28
64°
42°
29
65°
44°
30
65°
44°
1
67°
45°
2
66°
44°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
April Weather in Post Falls
Post Falls's April 2026 forecast shows daily high temperatures ranging from 51° to 70°, with overnight lows between 32° and 47°. The average high for April is 60° with an average low of 39°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how April weather will actually feel in Post Falls. See also: May | June | July.