WxDecoder

MT41 Weather Jefco Skypark Airport

Whitehall, MontanaElevation 4,510 ftSmall airport
OFF-FIELD REFERENCE
Nearest report: KBTM · 17 NM W · 51 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 · KBTM
WIND
160@12
gust 17 kt
VISIBILITY
10 SM
16.1 km
CEILING
None
no BKN/OVC layer
ACTIVE NWS ALERTS

Active weather alerts

Dense Fog AdvisoryModerate · Expected · Likely
25 1905Z to 26 1800Z
Elkhorn and Boulder Mountains; Canyon Ferry Area; Missouri Headwaters; Madison River Valley; Gallatin Valley; Northwest Beaverhead County; Beaverhead and Western Madison below 6000ft; Gallatin and Madison County Mountains and Centennial Mountains
* WHAT...Variable visibility down to a quarter mile or less in dense fog. * WHERE...Canyon Ferry Area, Elkhorn and Boulder Mountains, Beaverhead and Western Madison below 6000ft, Gallatin Valley, Gallatin and Madison County Mountains and Centennial Mountains, Madison River Valley, Missouri Headwaters, and Northwest Beaverhead County. * WHEN...Until noon MDT Monday. * IMPACTS...Low visibility co…
If driving, slow down, use your headlights, and leave plenty of distance ahead of you.

Alerts from the National Weather Service. For situational awareness only; always confirm against an official briefing.

FORECAST & PILOT NOTES · SUPPLEMENTAL

Extended forecast and pilot notes

No current METAR is available for this airport, so there is no observed aviation report to summarize. Forecast suggests tonight mostly cloudy then areas of fog, low near 18F, 1% chance of precipitation. Key risks: strong winds in the forecast.

PILOT WEATHER NOTES
Strong winds in the forecastWeather.gov
Tuesday: winds up to 31 kt. Re-check crosswind components closer to departure.
DayConditionsTemp FWindGustsPrecipPilot note
Tonight Mostly Cloudy then Areas Of Fog 18 NE 2 kt – 1%
Monday Areas Of Fog then Mostly Cloudy 51/28 E 3 kt – 86%
Tuesday Slight Chance Light Snow then Mostly Sunny 49/21 WSW 17 kt 31 kt 21% Strong winds in the forecast
Wednesday Sunny 50/22 SW 10 kt 22 kt 5%
Thursday Mostly Sunny 50/23 S 3 kt – 16%
Friday Chance Rain And Snow 46/23 E 2 kt – 36%
Saturday Slight Chance Light Snow 49/23 WNW 1 kt – 24%
Sunday Mostly Sunny then Chance Light Rain 50 W 2 kt – 37%

Source: National Weather Service (office TFX). Forecast issued 0143Z.

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 MT41. Enter a runway number or heading to estimate wind components.
RUNWAYS

Runway detail & declared distances

1 runway · longest 3,800 ft

09/27
Dimensions
3,800 x 60 ft
Surface
Turf
Edge lights
LOW
RWY 09
RWY 27

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
4,510 ft MSL

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

DAYLIGHT & NIGHT

Sun & logging windows

Sunset
0025Z 6:25 PM
Sunrise
1400Z 8:00 AM
Loggable night
0056Z (6:56 PM local) → 1329Z (7:29 AM local)
end of evening to start of morning civil twilight
Position lights required
0025Z (6:25 PM local) → 1400Z (8:00 AM local)
sunset to sunrise (91.209)
Night passenger currency
0125Z (7:25 PM local) → 1300Z (7:00 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

Jefco Skypark Airport is in Whitehall, Montana. Field elevation 4,510 ft MSL. Airport facts are drawn from OurAirports and the FAA NASR dataset.

OPERATIONS & CONTACT
OwnershipPrivately owned
UsePrivate use
TypeSmall airport
ManagerTOM SEABASE, VICE PRESIDENT
Manager phone406-201-1789
AttendedDaily, DALGT
CHARTS & AIRSPACE
ICAO / IATAMT41
SectionalGREAT FALLS
Center (ARTCC)SALT LAKE CITY
Flight service (AFSS)GREAT FALLS
RegionMontana
CountryUnited States
Coordinates45.8783, -112.1170
Distance from city1 NM W
SERVICES & LIGHTING
Control towerNon-towered
Field lightingSee remarks
UNICOM122.800
FREQUENCIES

Communications

122.800
UNICOM
UNICOM

Not all tower/ground/approach frequencies are in our datasets. Verify with the FAA Chart Supplement.

AIRCRAFT ACTIVITY

Traffic patterns

Aircraft activity data is not available for this airport yet.

NEARBY AIRPORTS

Weather reference stations

MT41 has no on-field report. Nearest reporting station: KBTM (17 NM W, VFR).

KBTM Bert Mooney Airport
17 NM W
VFR
KBZN Bozeman Yellowstone International Airport
41 NM E
LIFR
KDLN Dillon Airport
42 NM SW
IFR
KHLN Helena Regional Airport
44 NM N
VFR
KLVM Mission Field
71 NM E
VFR
KWYS Yellowstone Airport
83 NM SE
VFR
AIRPORT REMARKS

Operational remarks

›VFR USE ONLY
›ACTVT LIRL RY 09/27 - CTAF.
›FOR CD CTC SALT LAKE ARTCC AT 801-320-2568.
OFFICIAL LINKS & SOURCES
↗Search NOTAMs (official FAA NOTAM Search)
↗MT41 on OurAirports
FREQUENTLY ASKED
Does MT41 have a METAR?
No on-field METAR is issued for MT41. This page uses the nearest reporting station as a reference.
Does MT41 have a TAF?
No TAF is issued directly for MT41. Use the nearest TAF-issuing field as a planning reference.
What is the field elevation at MT41?
MT41 sits at 4,510 ft MSL, which factors into the density-altitude estimate on this page.
Is this an official preflight weather briefing for MT41?
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.