S
M
T
W
T
F
S
29
69°
38°
30
68°
38°
31
61°
43°
1
53°
38°
2
55°
30°
3
52°
27°
4
59°
29°
5
67°
25°
6
57°
39°
7
68°
31°
8
69°
29°
9
68°
33°
10
63°
34°
11
60°
32°
12
58°
28°
13
55°
32°
14
50°
29°
15
60°
24°
16
60°
27°
17
58°
24°
18
61°
32°
19
68°
36°
20
68°
39°
21
67°
36°
22
60°
35°
23
56°
31°
24
54°
33°
25
57°
32°
26
60°
36°
27
57°
34°
28
63°
35°
29
64°
36°
30
63°
31°
1
66°
37°
2
67°
38°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
April Weather in Flagstaff
Flagstaff's April 2026 forecast shows daily high temperatures ranging from 54° to 68°, with overnight lows between 24° and 39°. The average high for April is 62° with an average low of 34°. 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 Flagstaff. See also: May | June | July.