WxDecoder

2MT8 Weather South Boulder Airport

Cardwell, MontanaElevation 4,560 ftSmall airport
OFF-FIELD REFERENCE
Nearest report: KBTM · 25 NM W · 14 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 21F, 0% 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 21 ESE 2 kt – 0%
Monday Areas Of Fog then Mostly Cloudy 50/29 NNE 1 kt – 87%
Tuesday Chance Rain And Snow then Partly Sunny 48/24 WSW 17 kt 31 kt 29% Strong winds in the forecast
Wednesday Sunny 50/24 SW 7 kt 18 kt 6%
Thursday Mostly Sunny 50/24 ENE 2 kt – 19%
Friday Chance Light Snow 45/24 ENE 1 kt – 38%
Saturday Chance Light Snow 47/24 0 kt – 26%
Sunday Chance Rain And Snow 49 WSW 1 kt – 38%

Source: National Weather Service (office TFX). Forecast issued 0107Z.

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 2MT8. Enter a runway number or heading to estimate wind components.
RUNWAYS

Runway detail & declared distances

1 runway · longest 3,000 ft

18/36
Dimensions
3,000 x 100 ft
Surface
Turf
RWY 18
Traffic patternRight
RWY 36

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
4,560 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
1359Z 7:59 AM
Loggable night
0055Z (6:55 PM local) → 1328Z (7:28 AM local)
end of evening to start of morning civil twilight
Position lights required
0025Z (6:25 PM local) → 1359Z (7:59 AM local)
sunset to sunrise (91.209)
Night passenger currency
0125Z (7:25 PM local) → 1259Z (6:59 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

South Boulder Airport is in Cardwell, Montana. Field elevation 4,560 ft MSL. Airport facts are drawn from OurAirports and the FAA NASR dataset.

OPERATIONS & CONTACT
OwnershipPrivately owned
UsePrivate use
TypeSmall airport
ManagerJEAN E. DEMING
Manager phone406-490-5799
AttendedUNATNDD
CHARTS & AIRSPACE
ICAO / IATA2MT8
SectionalGREAT FALLS
Center (ARTCC)KANSAS CITY
Flight service (AFSS)COLUMBIA
RegionMontana
CountryUnited States
Coordinates45.8151, -111.9259
Distance from city4 NM S
SERVICES & LIGHTING
Control towerNon-towered
AIRCRAFT ACTIVITY

Traffic patterns

Aircraft activity data is not available for this airport yet.

NEARBY AIRPORTS

Weather reference stations

2MT8 has no on-field report. Nearest reporting station: KBTM (25 NM W, VFR).

KBTM Bert Mooney Airport
25 NM W
VFR
KBZN Bozeman Yellowstone International Airport
32 NM E
LIFR
KDLN Dillon Airport
43 NM SW
IFR
KHLN Helena Regional Airport
48 NM N
VFR
KLVM Mission Field
62 NM E
VFR
KWYS Yellowstone Airport
76 NM SE
VFR
AIRPORT REMARKS

Operational remarks

›PRVDD VFR PVT USE.
›FOR CD CTC SALT LAKE ARTCC AT 801-320-2568.
OFFICIAL LINKS & SOURCES
↗Search NOTAMs (official FAA NOTAM Search)
↗2MT8 on OurAirports
FREQUENTLY ASKED
Does 2MT8 have a METAR?
No on-field METAR is issued for 2MT8. This page uses the nearest reporting station as a reference.
Does 2MT8 have a TAF?
No TAF is issued directly for 2MT8. Use the nearest TAF-issuing field as a planning reference.
What is the field elevation at 2MT8?
2MT8 sits at 4,560 ft MSL, which factors into the density-altitude estimate on this page.
Is this an official preflight weather briefing for 2MT8?
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.