S
M
T
W
T
F
S
29
46°
30°
30
51°
30°
31
59°
31°
1
52°
42°
2
54°
41°
3
58°
39°
4
68°
47°
5
77°
48°
6
72°
43°
7
54°
34°
8
60°
39°
9
62°
40°
10
64°
41°
11
63°
42°
12
59°
41°
13
60°
43°
14
61°
42°
15
60°
44°
16
58°
41°
17
63°
43°
18
62°
41°
19
56°
40°
20
55°
38°
21
55°
37°
22
56°
39°
23
56°
37°
24
57°
36°
25
57°
37°
26
58°
41°
27
57°
40°
28
59°
38°
29
64°
43°
30
63°
42°
1
63°
45°
2
67°
42°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
April Weather in Startup
Startup's April 2026 forecast shows daily high temperatures ranging from 54° to 77°, with overnight lows between 34° and 48°. The average high for April is 61° 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 Startup. See also: May | June | July.