Groton New London Airport

KGON / GON

Groton, US

Last Updated
Jul 4, 09:56Z

Current Weather

Display Units
Recent 35 min ago
09:56Z

☀️ Day
VFR
Flight Rules
23°C
Temperature
Dewpoint: 22°C
0 kt
10 SM
Visibility
Ceiling
Unlimited
1011 hPa
QNH
Altimeter Setting

Raw METAR

METAR KGON 040956Z AUTO 00000KT 10SM CLR 23/22 A2985 RMK AO2 SLP108 T02330222

Weather Briefing

VFR

Groton New London Airport is currently reporting visual flight rules (VFR) conditions with clear skies and 10 SM visibility.

Wind Analysis

Winds are calm, presenting no crosswind concerns for any runway.

Visibility & Ceiling

Visibility is 10 SM. Skies are clear with unlimited ceiling.

Temperature & Moisture

Temperature is 23°C (73°F) with a dewpoint of 22°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 21 hours. Conditions are expected to fluctuate between VFR and MVFR. VFR pilots should be prepared for deteriorating conditions. Expected weather includes: Light Thunderstorm Rain, Light Showers Rain. There is a 30% probability of MVFR conditions with Light Thunderstorm Rain between 20:00Z and 00:00Z. There is a 30% probability of MVFR conditions with Light Showers Rain between 00:00Z and 06:00Z.

Pilot Recommendations

Conditions are favorable for visual flight. 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
1011 hPa
Sea Level Pressure
For altitude above MSL
QFE
1011 hPa
Field Pressure
Height above aerodrome (9 ft)
Pressure Alt
77 ft
QNE Reference
Standard: 1013 hPa
Density Altitude: 1,039 ft
ISA Deviation: +8.0°C

Forecast (TAF)

View Full TAF
Raw TAF
TAF KGON 040831Z 0409/0506 29004KT P6SM SCT050 SCT250 FM041400 26010KT P6SM FEW060 SCT250 PROB30 0420/0424 4SM -TSRA BKN040CB FM050000 29005KT P6SM VCSH BKN060 PROB30 0500/0506 5SM -SHRA BKN040
Upcoming Changes (Next 12 Hours)
10:30Z BASE
+0h
VFR 290° 4 kt
Visibility: >6SM
14:00Z FM041400
+4h
VFR 260° 10 kt
Visibility: >6SM
20:00Z PROB30
+10h
MVFR
Visibility: 4SM
Ceiling: 4,000 ft
Light Thunderstorm Rain

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°
0.0 kt 0.0 kt
34° angle
15/33 4,000 ft 96 ft ASP 135°
0.0 kt 0.0 kt
135° angle
🟢 Active Runway: Best headwind component for current conditions
⬆️ Headwind: Favorable wind component
↔️ Crosswind: ≤10kt Safe, 11-15kt Caution, >15kt Challenging

Weather Statistics - KGON

8,477 observations | Sep 2025 - Jul 2026

Flight Rules Distribution

VFR
74%
MVFR
13%
IFR
8.1%
LIFR
4.9%

Groton New London Airport typically experiences VFR conditions 74% of the time, though instrument-rated pilots will find IFR weather present approximately 13% of observations. Prevailing winds are from the N averaging 8.9 knots, with gusts recorded up to 41 knots. Calm conditions occur 12.4% of the time. Temperature extremes range from -18°C to 31°C, reflecting significant seasonal variation. The best months for VFR flying are July, November, December.

Wind Analysis

Prevailing Direction: N (0°)
Average Speed: 8.9 kt
Maximum Recorded: 41 kt
Calm Winds: 12.4%
Direction Distribution:
E
5.2%
N
16%
S
13.2%
W
14.7%
NE
7.9%
NW
12.2%
SE
4.7%
SW
13.7%

Temperature Range

Average: 7.4°C
Range: -18°C to 31°C
-18°C 31°C

Visibility

Average: 9.1 SM
Below 3 SM: 3.6%
Fog Frequency: 4.3%

Best Months for VFR

July November December

Runway Wind Analysis

Runway 05/23
Favorable wind: 100%
Avg crosswind: 5.5 kt
Runway 15/33
Favorable wind: 100%
Avg crosswind: 5.6 kt

Statistics computed from 8,477 METAR observations (Sep 2025 - Jul 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.