Long Island MacArthur Airport (ISP) Weather 06/23/2026
Overnight
61
Mostly Cloudy
Wednesday
76
Decreasing Clouds
Wednesday Night
62
Mostly Cloudy then Slight Chance Showers
Thursday
84
Chance Showers
Thursday Night
68
Chance Showers then Partly Cloudy
Juneteenth
86
Partly Sunny
Friday Night
65
Mostly Clear
Saturday
84
Sunny
Saturday Night
65
Mostly Clear
Sunday
83
Sunny
Sunday Night
65
Partly Cloudy
Monday
80
Chance Showers
Monday Night
65
Chance Showers
Weekly Forecast
Overnight
Mostly cloudy, with a low around 61. South wind 3 to 6 mph.
Wednesday
Mostly cloudy, then gradually becoming sunny, with a high near 76. South wind 5 to 10 mph.
Wednesday Night
A 20 percent chance of showers after 2am. Increasing clouds, with a low around 62. South wind around 6 mph.
Thursday
A 30 percent chance of showers, mainly after 2pm. Mostly cloudy, with a high near 84. South wind 13 to 18 mph, with gusts as high as 30 mph.
Thursday Night
A 30 percent chance of showers before 8pm. Partly cloudy, with a low around 68. West wind 8 to 15 mph.
Juneteenth
Partly sunny, with a high near 86.
Friday Night
Mostly clear, with a low around 65.
Saturday
Sunny, with a high near 84.
Saturday Night
Mostly clear, with a low around 65.
Sunday
Sunny, with a high near 83.
Sunday Night
Partly cloudy, with a low around 65.
Monday
A 50 percent chance of showers. Partly sunny, with a high near 80.
Monday Night
A 50 percent chance of showers. Mostly cloudy, with a low around 65.