S
M
T
W
T
F
S
29
63°
42°
30
65°
54°
31
77°
57°
1
79°
51°
2
80°
52°
3
75°
60°
4
76°
62°
5
64°
50°
6
64°
41°
7
70°
37°
8
65°
44°
9
71°
45°
10
76°
36°
11
81°
50°
12
83°
53°
13
80°
54°
14
84°
57°
15
83°
58°
16
85°
55°
17
85°
56°
18
87°
59°
19
80°
44°
20
74°
41°
21
78°
51°
22
77°
52°
23
77°
55°
24
78°
43°
25
74°
49°
26
75°
48°
27
69°
44°
28
73°
49°
29
69°
49°
30
74°
48°
1
72°
48°
2
74°
51°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
April Weather in Three Sisters Mountain
Three Sisters Mountain's April 2026 forecast shows daily high temperatures ranging from 69° to 87°, with overnight lows between 41° and 59°. The average high for April is 78° with an average low of 51°. 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 Three Sisters Mountain. See also: May | June | July.