S
M
T
W
T
F
S
29
62°
26°
30
71°
51°
31
83°
59°
1
86°
62°
2
65°
48°
3
84°
47°
4
87°
67°
5
74°
49°
6
63°
44°
7
56°
39°
8
55°
32°
9
63°
36°
10
78°
42°
11
71°
46°
12
73°
42°
13
79°
59°
14
87°
54°
15
91°
58°
16
92°
63°
17
80°
56°
18
84°
51°
19
66°
37°
20
56°
38°
21
63°
27°
22
78°
50°
23
83°
52°
24
86°
55°
25
63°
48°
26
58°
44°
27
70°
37°
28
63°
49°
29
60°
54°
30
69°
41°
1
68°
38°
2
60°
45°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
April Weather in Herndon
Herndon's April 2026 forecast shows daily high temperatures ranging from ° to °, with overnight lows between ° and °. The average high for April is ° with an average low of °. 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 Herndon. See also: May | June | July.
