WxDecoder
MT45

Castleberry Airport

Ekalaka, MontanaElevation 3,373 ftSmall airport
OFF-FIELD REFERENCE
Nearest report: KBHK · 29 NM NE · 44 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 · KBHK
WIND
Calm
no steady wind
VISIBILITY
10 SM
16.1 km
CEILING
None
no BKN/OVC layer
ACTIVE NWS ALERTS

Active weather alerts

Red Flag WarningSevere · Expected · Likely
10 1800Z to 11 0200Z
Sioux Ranger District Custer National Forest
* IMPACTS: Low humidities, unseasonably warm temperatures, and strong gusty winds, will create erratic fire behavior. * AFFECTED AREA: In Southeast MT and Northwest SD Fire Zone...133. * COUNTIES AFFECTED: In Northwest SD...Harding. In Southeast MT...Carter...Fallon. * WIND: West 10 to 20 mph with gusts up to 35 mph. * HUMIDITY: As low as 12 percent. * TEMPERATURES: Up to 90.
A Red Flag Warning means that critical fire weather conditions are either occurring now, or will shortly. A combination of strong winds, low relative humidity, and warm temperatures can contribute to extreme fire behavior.

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 aviation METAR is published for this airport. The nearest National Weather Service station reports wind from 205° at 4 kt, gusting 5 kt, temperature 12.22C. Treat this as supplemental, not an aviation observation. Forecast suggests thursday sunny, high near 87F, low near 57F, 0% chance of precipitation. Key risks: thunderstorms in the forecast.

PILOT WEATHER NOTES
Thunderstorms in the forecastWeather.gov
Sunday: Chance Rain Showers. Watch for developing convection and plan alternates.
DayConditionsTemp FWindGustsPrecipPilot note
Thursday Sunny 87/57 WSW 18 kt – 0%
Friday Mostly Sunny 73/46 N 15 kt – 25%
Saturday Mostly Cloudy 66/46 NE 9 kt – 66%
Sunday Chance Rain Showers 66/45 E 23 kt – 71% Thunderstorms in the forecast
Monday Slight Chance Rain Showers then Partly Sunny 62/41 WNW 18 kt – 17%
Tuesday Sunny 72/47 SE 9 kt – 19%
Wednesday Mostly Sunny 72 ESE 9 kt – 8%

Source: National Weather Service (office BYZ). Forecast issued 0635Z.

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 MT45. Enter a runway number or heading to estimate wind components.
RUNWAYS

Runway detail & declared distances

1 runway · longest 1,100 ft

11/29
Dimensions
1,100 x 40 ft
Surface
Turf
RWY 11
RWY 29

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
3,373 ft MSL

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

DAYLIGHT & NIGHT

Sun & logging windows

Sunset
0121Z 7:21 PM
Sunrise
1230Z 6:30 AM
Loggable night
0151Z (7:51 PM local) → 1159Z (5:59 AM local)
end of evening to start of morning civil twilight
Position lights required
0121Z (7:21 PM local) → 1230Z (6:30 AM local)
sunset to sunrise (91.209)
Night passenger currency
0221Z (8:21 PM local) → 1130Z (5:30 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

Castleberry Airport is in Ekalaka, Montana. Field elevation 3,373 ft MSL. Airport facts are drawn from OurAirports and the FAA NASR dataset.

OPERATIONS & CONTACT
OwnershipPrivately owned
UsePrivate use
TypeSmall airport
ManagerDANE CASTLEBERRY
Manager phone406-775-6837
AttendedUNATNDD
CHARTS & AIRSPACE
ICAO / IATAMT45
SectionalBILLINGS
Center (ARTCC)SALT LAKE CITY
Flight service (AFSS)GREAT FALLS
RegionMontana
CountryUnited States
Coordinates45.9089, -104.5760
Distance from city2 NM NW
SERVICES & LIGHTING
Fuel100
Control towerNon-towered
AIRCRAFT ACTIVITY

Traffic patterns

Aircraft activity data is not available for this airport yet.

NEARBY AIRPORTS

Weather reference stations

MT45 has no on-field report. Nearest reporting station: KBHK (29 NM NE, VFR).

KBHK Baker Municipal Airport
29 NM NE
VFR
KMLS Miles City Airport - Frank Wiley Field
63 NM NW
VFR
KGDV Dawson Community Airport
74 NM N
VFR
KDIK Dickinson Theodore Roosevelt Regional Airport
91 NM NE
VFR
KSPF Black Hills Airport-Clyde Ice Field
92 NM S
VFR
KGCC Northeast Wyoming Regional Airport
102 NM SW
VFR
AIRPORT REMARKS

Operational remarks

›4' FENCE 100 FEET FROM RWY.
›FOR CD CTC SALT LAKE ARTCC AT 801-320-2568.
OFFICIAL LINKS & SOURCES
↗Search NOTAMs (official FAA NOTAM Search)
↗MT45 on OurAirports
FREQUENTLY ASKED
Does MT45 have a METAR?
No on-field METAR is issued for MT45. This page uses the nearest reporting station as a reference.
Does MT45 have a TAF?
No TAF is issued directly for MT45. Use the nearest TAF-issuing field as a planning reference.
What is the field elevation at MT45?
MT45 sits at 3,373 ft MSL, which factors into the density-altitude estimate on this page.
Is this an official preflight weather briefing for MT45?
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.