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°
50°
22
74°
51°
23
78°
52°
24
84°
52°
25
69°
50°
26
64°
47°
27
65°
51°
28
67°
52°
29
69°
50°
30
64°
48°
1
64°
50°
2
65°
47°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
April Weather in Chantilly
Chantilly's April 2026 forecast shows daily high temperatures ranging from 63° to 84°, with overnight lows between 47° and 52°. The average high for April is 69° with an average low of 50°. 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 Chantilly. See also: May | June | July.