S
M
T
W
T
F
S
29
68°
53°
30
78°
56°
31
84°
61°
1
85°
61°
2
83°
63°
3
85°
63°
4
84°
64°
5
82°
64°
6
67°
56°
7
76°
54°
8
72°
55°
9
75°
53°
10
80°
52°
11
84°
52°
12
85°
53°
13
83°
57°
14
88°
57°
15
89°
58°
16
89°
60°
17
89°
62°
18
88°
60°
19
71°
53°
20
77°
49°
21
82°
48°
22
81°
59°
23
84°
54°
24
86°
57°
25
82°
63°
26
85°
65°
27
83°
59°
28
85°
66°
29
84°
63°
30
80°
54°
1
77°
54°
2
71°
52°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
April Weather in Ashburn-Sycamore
Ashburn-Sycamore's April 2026 forecast shows daily high temperatures ranging from 71° to 85°, with overnight lows between 52° and 66°. The average high for April is 81° with an average low of 60°. 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 Ashburn-Sycamore. See also: May | June | July.