S
M
T
W
T
F
S
29
59°
30°
30
73°
51°
31
72°
50°
1
50°
34°
2
68°
34°
3
67°
51°
4
64°
36°
5
41°
34°
6
45°
20°
7
41°
27°
8
59°
48°
9
65°
45°
10
61°
44°
11
64°
51°
12
61°
50°
13
61°
48°
14
63°
41°
15
62°
44°
16
62°
42°
17
61°
36°
18
63°
44°
19
64°
43°
20
64°
43°
21
65°
46°
22
64°
46°
23
66°
44°
24
63°
39°
25
55°
37°
26
55°
41°
27
56°
37°
28
64°
39°
29
56°
36°
30
57°
41°
1
64°
43°
2
59°
39°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
April Weather in Summit
Summit's April 2026 forecast shows daily high temperatures ranging from 41° to 66°, with overnight lows between 20° and 51°. The average high for April is 59° with an average low of 41°. 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 Summit. See also: May | June | July.