Morristown Municipal Airport

KMMU / MMU

Morristown, US

Last Updated
Apr 18, 05:55Z

Current Weather

Display Units
Fresh 23 min ago
05:55Z

☀️ Day
MVFR
Flight Rules
12°C
Temperature
Dewpoint: 12°C
0 kt
5 SM
Visibility
Ceiling
Unlimited
1018 hPa
QNH
Altimeter Setting

Raw METAR

METAR KMMU 180555Z AUTO 00000KT 5SM BR CLR 12/12 A3005 RMK AO2

Weather Briefing

MVFR

Morristown Municipal Airport is currently reporting marginal VFR (MVFR) conditions with clear skies and 5 SM visibility.

Wind Analysis

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

Visibility & Ceiling

Visibility is 5 SM. Skies are clear with unlimited ceiling.

Temperature & Moisture

Temperature is 12°C (54°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.

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.

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

QNH
1018 hPa
Sea Level Pressure
For altitude above MSL
QFE
1012 hPa
Field Pressure
Height above aerodrome (187 ft)
Pressure Alt
45 ft
QNE Reference
Standard: 1013 hPa
Density Altitude: -270 ft
ISA Deviation: -2.6°C

24-Hour Weather Evolution

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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
MMU
05
23
13
31

Runway Information

Runway Length Width Surface Heading Wind Component
05/23 5,999 ft 150 ft ASP 36°
0.0 kt 0.0 kt
36° angle
13/31 3,998 ft 150 ft ASP 113°
0.0 kt 0.0 kt
113° angle
🟢 Active Runway: Best headwind component for current conditions
⬆️ Headwind: Favorable wind component
↔️ Crosswind: ≤10kt Safe, 11-15kt Caution, >15kt Challenging

Weather Statistics - KMMU

8,417 observations | Sep 2025 - Apr 2026

Flight Rules Distribution

VFR
79.9%
MVFR
10.9%
IFR
6.2%
LIFR
3%

Morristown Municipal Airport typically experiences VFR conditions 79.9% of the time, though instrument-rated pilots will find IFR weather present approximately 9.2% of observations. Prevailing winds are from the W averaging 7 knots. Calm conditions occur 40% of the time. Temperature extremes range from -24°C to 32°C, reflecting significant seasonal variation. The best months for VFR flying are November, January, September.

Wind Analysis

Prevailing Direction: W (270°)
Average Speed: 7 kt
Maximum Recorded: 29 kt
Calm Winds: 40%
Direction Distribution:
N
10.4%
NE
5.2%
E
2.3%
SE
1.7%
S
6.3%
SW
9.4%
W
14.4%
NW
10.4%

Temperature Range

Average: 3.9°C
Range: -24°C to 32°C
-24°C 32°C

Visibility

Average: 9.3 SM
Below 3 SM: 2%
Fog Frequency: 1.6%

Best Months for VFR

November January September

Runway Wind Analysis

Runway 05/23
Favorable wind: 100%
Avg crosswind: 4.5 kt
Runway 13/31
Favorable wind: 100%
Avg crosswind: 4.3 kt

Statistics computed from 8,417 METAR observations (Sep 2025 - Apr 2026). Data sourced from official aviation weather services. Updated daily.

Morristown Municipal Airport - Airport Information

Airport Details

ICAO Code: KMMU
IATA Code: MMU
Type: medium airport
Status: active
Elevation: 187 ft MSL

Location

City: Morristown
Country: US
Latitude: 40.799062°
Longitude: -74.414949°
Time Zone: Etc/GMT+5

Runway Information

Runway 05/23
Length: 5,999 ft
Width: 150 ft
Surface: ASP
ILS: No
Runway 13/31
Length: 3,998 ft
Width: 150 ft
Surface: ASP
ILS: No

About Morristown Municipal Airport

Overview

Morristown Municipal Airport serves as a critical medium-sized airport located in northern New Jersey, situated at 40.799062, -74.414949 with an elevation of 187 feet MSL. The airport features two asphalt runways: Runway 05/23 at 5,999 feet and Runway 13/31 at 3,998 feet, supporting diverse general aviation and regional aviation operations.

Flying Conditions

Weather conditions at KMMU demonstrate excellent overall flyability, with VFR conditions prevailing 82.5% of the time. Wind patterns are predominantly westerly at 270° with an average speed of 7 knots, though pilots should be prepared for occasional gusts up to 28 knots. Temperature variations range from -19°C to 30°C, with November, January, and September offering the most consistently favorable flying conditions.

Notable Features

Both runways at Morristown Municipal Airport offer 100% favorable wind alignments, with minimal average crosswind components of 4.3-4.4 knots. The airport's moderate elevation and geographic location provide relatively stable meteorological conditions, with low occurrences of reduced visibility (only 1.8% of observations showing less than 3 statute miles) and minimal fog events (1.7% of observations).

Approach Considerations

Pilots can expect consistent approach conditions with high predictability given the airport's weather profile. Both runways demonstrate balanced wind characteristics, allowing flexible operational planning. The statistically low occurrence of instrument meteorological conditions (IFR at 4.5%, LIFR at 2.9%) suggests generally reliable visual approach opportunities throughout the year.

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.