S
M
T
W
T
F
S
29
24°
-18°
30
32°
-7°
31
25°
-1°
1
20°
-3°
2
25°
-15°
3
29°
-6°
4
31°
3°
5
29°
2°
6
33°
21°
7
24°
3°
8
28°
-3°
9
34°
27°
10
36°
26°
11
35°
27°
12
39°
12°
13
33°
24°
14
38°
27°
15
38°
26°
16
34°
28°
17
38°
30°
18
39°
28°
19
40°
27°
20
42°
28°
21
41°
31°
22
42°
30°
23
40°
33°
24
40°
34°
25
39°
35°
26
41°
35°
27
40°
34°
28
40°
32°
29
41°
31°
30
41°
33°
1
42°
35°
2
41°
36°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
April Weather in Harrington Harbour
Harrington Harbour's April 2026 forecast shows daily high temperatures ranging from 33° to 42°, with overnight lows between 12° and 36°. The average high for April is 39° with an average low of 30°. 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 Harrington Harbour. See also: May | June | July.