Jackson Hole Airport

KJAC / JAC

Jackson, US

Last Updated
Apr 23, 10:28Z

Current Weather

Display Units
Fresh 26 min ago
10:28Z

☀️ Day
VFR
Flight Rules
-1°C
Temperature
Dewpoint: -1°C
8 kt
180°
9 SM
Visibility
4,900 ft
Ceiling
Above Ground Level
1009 hPa
QNH
Altimeter Setting

Raw METAR

SPECI KJAC 231028Z AUTO 18008KT 9SM -SN SCT029 SCT037 OVC049 M01/M01 A2981 RMK AO2 P0000

Clouds - Visual Profile

12,000ft
9,000ft
6,000ft
3,000ft
Ground
Field Elev: 6,451 ft
SCT 2,900 ft AGL
SCT 3,700 ft AGL
OVC 4,900 ft AGL
SCT
Scattered (3/8-4/8 sky coverage)
2,900 ft
AGL (Above Ground)
9,351 ft AMSL
SCT
Scattered (3/8-4/8 sky coverage)
3,700 ft
AGL (Above Ground)
10,151 ft AMSL
☁️
OVC
Overcast (8/8 sky coverage)
4,900 ft
AGL (Above Ground)
11,351 ft AMSL

Weather Briefing

VFR

Jackson Hole Airport is currently reporting visual flight rules (VFR) conditions with overcast skies at 4,900 feet and 9 SM visibility.

Wind Analysis

Winds are from the south (180°) at 8 knots. Runway 19 is favored with a 8-knot headwind and 1-knot crosswind component.

Visibility & Ceiling

Visibility is 9 SM. The ceiling is 4900 feet AGL (overcast), well above standard VFR minimums.

Temperature & Moisture

Temperature is -1°C (30°F) with a dewpoint of -1°C. The temperature-dewpoint spread is very narrow, indicating saturated or near-saturated air. Fog formation or low cloud development is likely. Temperatures are at or below freezing. Check for icing conditions and ensure aircraft anti-ice/de-ice systems are operational if required.

Forecast Outlook

The TAF forecast covers the next 20 hours. Conditions are expected to fluctuate between VFR and MVFR. VFR pilots should be prepared for deteriorating conditions. Expected weather includes: Light Snow, Light Showers Snow. There is a 30% probability of MVFR conditions with Light Snow between 10:00Z and 16:00Z. There is a 30% probability of MVFR conditions with Light Showers Snow between 20:00Z and 00:00Z.

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
1009 hPa
Sea Level Pressure
For altitude above MSL
QFE
794 hPa
Field Pressure
Height above aerodrome (6,451 ft)
Pressure Alt
6,579 ft
QNE Reference
Standard: 1013 hPa
Density Altitude: 6,207 ft
ISA Deviation: -3.1°C

Forecast (TAF)

View Full TAF
Raw TAF
TAF KJAC 231000Z 2310/2406 19010KT 6SM -SN SCT015 BKN025 OVC040 PROB30 2310/2316 3SM -SN BKN015 FM231600 22010KT P6SM SCT025 BKN040 FM232000 22015G25KT 6SM -SHSN SCT020 BKN035 PROB30 2320/2324 3SM -SHSN BKN025 FM240200 30010KT P6SM SCT025 BKN040 FM240500 21008KT P6SM SCT025 BKN040
Upcoming Changes (Next 12 Hours)
10:54Z BASE
+0h
MVFR 190° 10 kt
Visibility: 6SM
Ceiling: 2,500 ft
Light Snow
16:00Z FM231600
+6h
VFR 220° 10 kt
Visibility: >6SM
Ceiling: 4,000 ft
20:00Z FM232000
+10h
VFR 220° 15 kt
Visibility: 6SM
Ceiling: 3,500 ft
Light Showers Snow
20:00Z PROB30
+10h
MVFR
Visibility: 3SM
Ceiling: 2,500 ft
Light Showers Snow

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
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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
JAC
01
19 ✈️

Runway Information

Runway Length Width Surface Heading Wind Component
✈️ 01/19
Active: 19
6,300 ft 150 ft ASP 19°
7.9 kt 1.4 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 - KJAC

6,404 observations | Sep 2025 - Apr 2026

Flight Rules Distribution

VFR
72.3%
MVFR
15.6%
IFR
8.7%
LIFR
3.3%

Jackson Hole Airport typically experiences VFR conditions 72.3% of the time, though instrument-rated pilots will find IFR weather present approximately 12% of observations. Prevailing winds are from the S averaging 8.4 knots, with gusts recorded up to 35 knots. Calm conditions occur 15.8% of the time. Temperature extremes range from -26°C to 25°C, reflecting significant seasonal variation. The best months for VFR flying are September, October, November.

Wind Analysis

Prevailing Direction: S (180°)
Average Speed: 8.4 kt
Maximum Recorded: 35 kt
Calm Winds: 15.8%
Direction Distribution:
N
15.3%
NE
7.9%
E
2.2%
SE
2.4%
S
24.3%
SW
22.8%
W
7.6%
NW
1.7%

Temperature Range

Average: 0.4°C
Range: -26°C to 25°C
-26°C 25°C

Visibility

Average: 9 SM
Below 3 SM: 4.9%
Fog Frequency: 1.2%

Best Months for VFR

September October November

Runway Wind Analysis

Runway 01/19
Favorable wind: 100%
Avg crosswind: 3.3 kt

Statistics computed from 6,404 METAR observations (Sep 2025 - Apr 2026). Data sourced from official aviation weather services. Updated daily.

Jackson Hole Airport - Airport Information

Airport Details

ICAO Code: KJAC
IATA Code: JAC
Type: medium airport
Status: active
Elevation: 6,451 ft MSL

Location

City: Jackson
Country: US
Latitude: 43.607300°
Longitude: -110.737999°
Time Zone: Etc/GMT+7

Runway Information

Runway 01/19
Length: 6,300 ft
Width: 150 ft
Surface: ASP
ILS: No

About Jackson Hole Airport

Overview

Jackson Hole Airport serves the Jackson Hole valley in western Wyoming, situated at a high elevation of 6,451 feet MSL. The airport supports regional and tourism-related air traffic in a mountainous environment, providing critical transportation access to Grand Teton National Park and surrounding wilderness areas.

Flying Conditions

Weather conditions at KJAC demonstrate significant variability, with Visual Flight Rules (VFR) conditions predominating at 73.2% of observed periods. Temperature ranges from -23°C to 25°C, creating potential challenges for aircraft performance, while prevailing winds from the south average 8.2 knots with occasional gusts up to 31 knots.

Notable Features

The airport's high elevation and surrounding mountainous terrain present critical considerations for pilot navigation and aircraft performance. Runway 01/19 is 6,300 feet long with an asphalt surface, and wind conditions are favorable for this runway orientation 100% of the time, with an average crosswind component of only 3.1 knots.

Approach Considerations

Pilots should anticipate generally stable approach conditions, with excellent visibility averaging 9 statute miles and minimal fog occurrence (0.4%). September through November represent the most consistently favorable VFR months, offering the most predictable flying conditions for arrivals and departures at this alpine 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.