WxDecoder

CT21 Weather Sunnyvale Field

North Stonington, ConnecticutElevation 213 ftSmall airport
OFF-FIELD REFERENCE
Nearest report: KWST · 7 NM S · 49 min old
No ceiling, visibility 10 SM.
No on-field report, so no field flight category. Conditions at the field may differ.
OFF-FIELD REFERENCE · KWST
WIND
Calm
no steady wind
VISIBILITY
10 SM
16.1 km
CEILING
None
no BKN/OVC layer
FORECAST & PILOT NOTES · SUPPLEMENTAL

Extended forecast and pilot notes

No aviation METAR is published for this airport. The nearest National Weather Service station reports wind calm, visibility 10 SM, temperature -1C. Treat this as supplemental, not an aviation observation. Forecast suggests today areas of frost then sunny, high near 64F, low near 32F, 0% chance of precipitation. Key risks: no significant hazards are highlighted right now, but always confirm against an official briefing.

DayConditionsTemp FWindGustsPrecipPilot note
Today Areas Of Frost then Sunny 64/32 W 3 kt – 0%
Monday Areas Of Frost then Sunny 66/45 W 6 kt – 0%
Tuesday Sunny 58/33 N 7 kt – 0%
Wednesday Widespread Frost then Sunny 56/40 E 3 kt – 0%
Thursday Mostly Sunny 64/49 SW 10 kt – 1%
Friday Sunny 69/46 W 6 kt – 1%
Saturday Mostly Sunny 65/48 NE 5 kt – 5%

Source: National Weather Service (office OKX). Forecast issued 1041Z.

Radar

Radar data: NOAA/NWS MRMS composite reflectivity. For situational awareness only, not a substitute for an official weather briefing.

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RUNWAYS & WIND
Crosswind calculator
No runway layout is available for CT21. Enter a runway number or heading to estimate wind components.
RUNWAYS

Runway detail & declared distances

1 runway · longest 2,004 ft

01/19
Dimensions
2,004 x 50 ft
Surface
Dirt
RWY 01
Traffic patternRight
RWY 19

Runway data from the FAA NASR dataset (effective 2026-06-11). Verify with the current Chart Supplement and NOTAMs.

FIELD CONDITIONS

Field elevation

Field elevation
213 ft MSL

Density and pressure altitude need a current temperature and altimeter from the METAR.

DAYLIGHT & NIGHT

Sun & logging windows

Sunset
2153Z 5:53 PM
Sunrise
1110Z 7:10 AM
Loggable night
2221Z (6:21 PM local) → 1042Z (6:42 AM local)
end of evening to start of morning civil twilight
Position lights required
2153Z (5:53 PM local) → 1110Z (7:10 AM local)
sunset to sunrise (91.209)
Night passenger currency
2253Z (6:53 PM local) → 1010Z (6:10 AM local)
1 hr after sunset to 1 hr before sunrise (61.57(b))

FAA definitions, shown in Zulu with airport-local time. Verify for your operation.

AIRPORT INFORMATION

Facility & services

Sunnyvale Field is in North Stonington, Connecticut. Field elevation 213 ft MSL. Airport facts are drawn from OurAirports and the FAA NASR dataset.

OPERATIONS & CONTACT
OwnershipPrivately owned
UsePrivate use
TypeSmall airport
ManagerCLARKS FALLS LAND TRUST
Manager phone860-602-8450
CHARTS & AIRSPACE
ICAO / IATACT21
SectionalNEW YORK
Center (ARTCC)BOSTON
Flight service (AFSS)BRIDGEPORT
RegionConnecticut
CountryUnited States
Coordinates41.4606, -71.8300
Distance from city3 NM ENE
SERVICES & LIGHTING
Control towerNon-towered
AIRCRAFT ACTIVITY

Traffic patterns

Aircraft activity data is not available for this airport yet.

NEARBY AIRPORTS

Weather reference stations

CT21 has no on-field report. Nearest reporting station: KWST (7 NM S, VFR).

KWST Westerly State Airport
7 NM S
VFR
KGON Groton New London Airport
12 NM SW
VFR
KOQU Quonset State Airport
20 NM NE
UNKNOWN
KBID Block Island State Airport
21 NM SE
VFR
KMTP Montauk Airport
23 NM S
UNKNOWN
KPVD Rhode Island T. F. Green International Airport
24 NM NE
VFR
AIRPORT REMARKS

Operational remarks

›DAY VFR ONLY.
OFFICIAL LINKS & SOURCES
↗Search NOTAMs (official FAA NOTAM Search)
↗CT21 on OurAirports
FREQUENTLY ASKED
Does CT21 have a METAR?
No on-field METAR is issued for CT21. This page uses the nearest reporting station as a reference.
Does CT21 have a TAF?
No TAF is issued directly for CT21. Use the nearest TAF-issuing field as a planning reference.
What is the field elevation at CT21?
CT21 sits at 213 ft MSL, which factors into the density-altitude estimate on this page.
Is this an official preflight weather briefing for CT21?
No. wxdecoder.com is for education and situational awareness only. It is not an official weather briefing or a substitute for official sources, NOTAM review, and pilot judgment.
This app is for aviation weather education, training, and situational awareness only. It is not a substitute for an official weather briefing, approved flight-planning software, flight service, dispatch procedures, current FAA regulations, or pilot judgment. Always verify weather with official sources before flight.