Weather at Long Island MacArthur Airport (ISP)
Islip, New York KISP #116 US airport by passengers
Official aviation observations and forecasts for ISP.
- FAA status
- No delays reported Updated 3 min ago
- Weather now
- VFR 41°F Observed 7 min ago
- Late departures
- 23.4%May 2026 to July 2026
- Security line
- No recent reportsAdd yours
Current conditions at ISP
VFR
41°F5°C
Good visibility and high cloud base. Normal operations are typical.
- Wind
- Calm
- Visibility
- 10+ mi
- Clouds
- Clear
- Ceiling
- None
- Pressure
- 30.41 inHg
METARMETAR KISP 020956Z AUTO 00000KT 10SM CLR 05/03 A3041 RMK AO2 SLP297 T00500033
TAFTAF KISP 020834Z 0209/0306 24005KT P6SM FEW250 FM021500 23008KT P6SM FEW250 FM021800 22011KT P6SM FEW150 FEW250 FM030200 22004KT P6SM SCT150
Source: NOAA Aviation Weather Center. Observed 7 min ago.
Forecast for the ISP area
This Afternoon61°F
Partly Sunny
8 mph S · 2% rain
Partly Sunny
8 mph S · 2% rain
Tonight47°F
Partly Cloudy
0 to 7 mph S · 2% rain
Partly Cloudy
0 to 7 mph S · 2% rain
Thursday66°F
Sunny
0 to 12 mph SW · 0% rain
Sunny
0 to 12 mph SW · 0% rain
Thursday Night53°F
Mostly Clear
10 mph SW · 0% rain
Mostly Clear
10 mph SW · 0% rain
Friday70°F
Sunny
9 to 13 mph W · 0% rain
Sunny
9 to 13 mph W · 0% rain
Friday Night43°F
Mostly Clear
9 to 13 mph NW · 0% rain
Mostly Clear
9 to 13 mph NW · 0% rain
Saturday60°F
Sunny
7 to 10 mph NW · 0% rain
Sunny
7 to 10 mph NW · 0% rain
Saturday Night43°F
Partly Cloudy
0 to 5 mph E · 0% rain
Partly Cloudy
0 to 5 mph E · 0% rain
Source: National Weather Service. Updated 4 d ago.
Runways
| Runway | Length |
|---|---|
| 06/24 | 7,006 ft |
| 15R/33L | 5,186 ft |
| 15L/33R | 3,175 ft |
Source: OurAirports (public domain). Runway data can lag behind construction closures.
Air traffic frequencies
| Service | Description | MHz |
|---|---|---|
| ATIS | ATIS | 120.725 |
| CLD | CLNC DEL | 121.850 |
| GND | GND | 135.300 |
| TWR | TWR | 119.300 |