Groton New London Airport

KGON / GON

Groton, US

Last Updated
May 15, 00:56Z

Current Weather

Display Units
Recent 34 min ago
00:56Z

🌙 Night
MVFR
Flight Rules
13°C
Temperature
Dewpoint: 12°C
3 kt
320°
4 SM
Visibility
4,800 ft
Ceiling
Above Ground Level
1006 hPa
QNH
Altimeter Setting

Raw METAR

METAR KGON 150056Z 32003KT 4SM -RA BR FEW003 BKN048 OVC060 13/12 A2970 RMK AO2 RAB26 SLP058 P0001 T01280122

Clouds - Visual Profile

12,000ft
9,000ft
6,000ft
3,000ft
Ground
Field Elev: 9 ft
FEW 300 ft AGL
BKN 4,800 ft AGL
OVC 6,000 ft AGL
🌤️
FEW
Few (1/8-2/8 sky coverage)
300 ft
AGL (Above Ground)
309 ft AMSL
☁️
BKN
Broken (5/8-7/8 sky coverage)
4,800 ft
AGL (Above Ground)
4,809 ft AMSL
☁️
OVC
Overcast (8/8 sky coverage)
6,000 ft
AGL (Above Ground)
6,009 ft AMSL

Weather Briefing

MVFR

Groton New London Airport is currently reporting marginal VFR (MVFR) conditions with overcast skies at 6,000 feet and 4 SM visibility.

Wind Analysis

Winds are from the northwest (320°) at 3 knots.

Visibility & Ceiling

Visibility is 4 SM, below VFR minimums in some airspace classifications. Check local requirements before departing VFR. The ceiling is 4800 feet AGL (broken), well above standard VFR minimums.

Temperature & Moisture

Temperature is 13°C (55°F) with a dewpoint of 12°C. The temperature-dewpoint spread is very narrow, indicating saturated or near-saturated air. Fog formation or low cloud development is likely.

Forecast Outlook

The TAF forecast covers the next 23 hours. The forecast shows a transition between VFR and IFR conditions. Pilots should monitor the forecast closely and have an alternate airport plan. Expected weather includes: Light Showers Rain, Mist, Fog, Mist. Expect variable wind speeds ranging from 3 to 14 knots. Temporary IFR conditions are forecast with Fog between 03:00Z and 07:00Z.

Pilot Recommendations

VFR pilots should exercise caution. Consider filing IFR if instrument rated, or postponing the flight if conditions are expected to deteriorate further. The narrow temperature-dewpoint spread creates risk of fog formation, particularly during evening and early morning hours. The forecast indicates conditions may deteriorate. Ensure you have fuel reserves and a viable alternate airport.

This briefing is generated from real-time METAR and TAF data. Always verify with official sources before flight.

QNH
1006 hPa
Sea Level Pressure
For altitude above MSL
QFE
1006 hPa
Field Pressure
Height above aerodrome (9 ft)
Pressure Alt
227 ft
QNE Reference
Standard: 1013 hPa
Density Altitude: -11 ft
ISA Deviation: -2.0°C

Forecast (TAF)

View Full TAF
Raw TAF
TAF KGON 150044Z 1501/1524 VRB04KT 2SM -SHRA BR OVC002 FM150200 VRB03KT 1/2SM FG VCSH BKN002 OVC008 FM150300 34004KT 1SM BR BKN004 OVC008 TEMPO 1503/1507 1/2SM FG FM151200 33008KT P6SM SCT006 BKN020 FM151500 31012KT P6SM VCSH FEW006 SCT020 BKN030 FM152200 34014KT P6SM BKN020 OVC030
Upcoming Changes (Next 12 Hours)
01:29Z BASE
+0h
LIFR VRB 4 kt
Visibility: 2SM
Ceiling: 200 ft
Light Showers Rain, Mist
02:00Z FM150200
+1h
LIFR VRB 3 kt
Visibility: 1/2SM
Ceiling: 200 ft
Fog
03:00Z FM150300
+2h
LIFR 340° 4 kt
Visibility: 1SM
Ceiling: 400 ft
Mist
03:00Z TEMPO
+2h
IFR
Visibility: 1/2SM
Fog

24-Hour Weather Evolution

Loading weather data...
Data Sources
  • • Current conditions from METAR observations
  • • Historical data from past 24 hours
  • • No forecast or predicted data included
  • • Data updated with each new METAR report
Chart Features
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Note: Future values beyond current TAF validity are estimates based on climatological data and trends. Always verify with current forecasts before flight operations.

Airport Runway Layout

N
GON
05
23
15
33 ✈️

Runway Information

Runway Length Width Surface Heading Wind Component
05/23 5,000 ft 150 ft ASP 34°
0.8 kt 2.9 kt
74° angle
✈️ 15/33
Active: 33
4,000 ft 96 ft ASP 135°
3.0 kt 0.5 kt
10° angle
🟢 Active Runway: Best headwind component for current conditions
⬆️ Headwind: Favorable wind component
↔️ Crosswind: ≤10kt Safe, 11-15kt Caution, >15kt Challenging

Weather Statistics - KGON

6,965 observations | Sep 2025 - May 2026

Flight Rules Distribution

VFR
73.3%
MVFR
14.4%
IFR
7.9%
LIFR
4.4%

Groton New London Airport typically experiences VFR conditions 73.3% of the time, though instrument-rated pilots will find IFR weather present approximately 12.3% of observations. Prevailing winds are from the N averaging 9.1 knots, with gusts recorded up to 41 knots. Calm conditions occur 10.4% of the time. Temperature extremes range from -18°C to 25°C, reflecting significant seasonal variation. The best months for VFR flying are November, December, September.

Wind Analysis

Prevailing Direction: N (0°)
Average Speed: 9.1 kt
Maximum Recorded: 41 kt
Calm Winds: 10.4%
Direction Distribution:
N
17.1%
NE
8.3%
E
5.2%
SE
4.7%
S
12%
SW
12.6%
W
16.1%
NW
13.5%

Temperature Range

Average: 5°C
Range: -18°C to 25°C
-18°C 25°C

Visibility

Average: 9.1 SM
Below 3 SM: 3.6%
Fog Frequency: 4.1%

Best Months for VFR

November December September

Runway Wind Analysis

Runway 05/23
Favorable wind: 100%
Avg crosswind: 5.8 kt
Runway 15/33
Favorable wind: 100%
Avg crosswind: 5.7 kt

Statistics computed from 6,965 METAR observations (Sep 2025 - May 2026). Data sourced from official aviation weather services. Updated daily.

Groton New London Airport - Airport Information

Airport Details

ICAO Code: KGON
IATA Code: GON
Type: medium airport
Status: active
Elevation: 9 ft MSL

Location

City: Groton
Country: US
Latitude: 41.330101°
Longitude: -72.045097°
Time Zone: Etc/GMT+5

Runway Information

Runway 05/23
Length: 5,000 ft
Width: 150 ft
Surface: ASP
ILS: No
Runway 15/33
Length: 4,000 ft
Width: 96 ft
Surface: ASP
ILS: No

About Groton New London Airport

Overview

Groton New London Airport serves southeastern Connecticut as a medium-sized airport located near the coastal region. Situated at a low elevation of 9 feet MSL, the airport provides critical aviation infrastructure for the Groton and New London metropolitan areas, supporting both general aviation and potential regional commercial operations.

Flying Conditions

The airport experiences predominantly VFR conditions, with 75.7% of observed weather periods suitable for visual flight rules. Wind patterns are consistently westerly at 270 degrees, averaging 9.3 knots with occasional gusts up to 41 knots. Temperature variations are significant, ranging from -14°C to 25°C, which pilots should consider for performance planning.

Notable Features

Both runways are asphalt-surfaced with substantial lengths: Runway 05/23 at 5000 feet and Runway 15/33 at 4000 feet. The coastal location suggests potential for rapidly changing weather conditions, with an average visibility of 9.3 statute miles and occasional periods of reduced visibility or fog affecting approximately 2% of observations.

Approach Considerations

Both runways demonstrate favorable wind alignment, with 100% wind compatibility for approaches. Average crosswind components are moderate, at 5.5 knots for Runway 05/23 and 6.3 knots for Runway 15/33. November, December, and September statistically offer the most consistent VFR flying conditions for pilots planning operations at this airport.

Data Sources & Accuracy: Airport information sourced from OurAirports.com, a collaborative database of worldwide airport data. Weather data from official aviation weather services including NOAA Aviation Weather Center and international METAR/TAF providers. Information is updated regularly but pilots should always verify current conditions and NOTAMs through official channels before flight operations.

Official Data Sources

Weather NOAA Aviation Weather Center • International METAR/TAF Network
Airports OurAirports.com • Public domain airport database
NOTAMs FAA NOTAM System • ICAO NOTAM Distribution
Last updated: Jan 1, 1970 12:00 AM UTC

Disclaimer: Data is provided for informational purposes only. Pilots must verify all information through official sources before flight operations. Weather conditions change rapidly; always obtain a current briefing from approved weather services.