S
M
T
W
T
F
S
31
63°
49°
1
63°
48°
2
62°
48°
3
63°
47°
4
64°
49°
5
64°
49°
6
63°
48°
7
61°
47°
8
65°
49°
9
65°
47°
10
63°
44°
11
62°
48°
12
64°
49°
13
63°
50°
14
65°
51°
15
65°
50°
16
64°
50°
17
65°
49°
18
65°
50°
19
64°
50°
20
66°
48°
21
64°
49°
22
64°
48°
23
65°
46°
24
63°
49°
25
64°
46°
26
64°
48°
27
65°
50°
28
66°
50°
29
65°
49°
30
66°
51°
1
67°
51°
2
67°
48°
3
66°
50°
4
68°
52°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
June Weather in Castlebar
Castlebar's June 2026 forecast shows daily high temperatures ranging from 61° to 68°, with overnight lows between 44° and 52°. The average high for June is 64° with an average low of 49°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how June weather will actually feel in Castlebar. See also: July | August | September.
