Bert Mooney Airport

KBTM / BTM

Butte, US

Last Updated
Apr 23, 06:53Z

Current Weather

Display Units
Recent 52 min ago
06:53Z

☀️ Day
VFR
Flight Rules
2°C
Temperature
Dewpoint: -1°C
8 kt
350°
6 SM
Visibility
4,400 ft
Ceiling
Above Ground Level
1008 hPa
QNH
Altimeter Setting

Raw METAR

METAR KBTM 230653Z AUTO 35008KT 6SM -SN SCT034 OVC044 02/M01 A2977 RMK AO2 SNB46 SLP066 P0000 T00221006 401390011

Clouds - Visual Profile

12,000ft
9,000ft
6,000ft
3,000ft
Ground
Field Elev: 5,550 ft
SCT 3,400 ft AGL
OVC 4,400 ft AGL
SCT
Scattered (3/8-4/8 sky coverage)
3,400 ft
AGL (Above Ground)
8,950 ft AMSL
☁️
OVC
Overcast (8/8 sky coverage)
4,400 ft
AGL (Above Ground)
9,950 ft AMSL

Weather Briefing

VFR

Bert Mooney Airport is currently reporting visual flight rules (VFR) conditions with overcast skies at 4,400 feet and 6 SM visibility.

Wind Analysis

Winds are from the north (350°) at 8 knots. Runway 33 is favored with a 8-knot headwind and 3-knot crosswind component.

Visibility & Ceiling

Visibility is 6 SM. The ceiling is 4400 feet AGL (overcast), well above standard VFR minimums.

Temperature & Moisture

Temperature is 2°C (36°F) with a dewpoint of -1°C. The narrow temperature-dewpoint spread suggests high humidity and potential for visibility restrictions, especially during cooling periods.

Forecast Outlook

The TAF forecast covers the next 23 hours. The forecast shows a transition between VFR and IFR conditions. Pilots should monitor the forecast closely and have an alternate airport plan. Expected weather includes: Light Snow, Mist, Light Showers Snow. Expect variable wind speeds ranging from 5 to 19 knots.

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
1008 hPa
Sea Level Pressure
For altitude above MSL
QFE
823 hPa
Field Pressure
Height above aerodrome (5,550 ft)
Pressure Alt
5,708 ft
QNE Reference
Standard: 1013 hPa
Density Altitude: 5,480 ft
ISA Deviation: -1.9°C

Forecast (TAF)

View Full TAF
Raw TAF
TAF KBTM 230634Z 2307/2406 33005KT P6SM OVC040 FM230730 31007KT 1SM -SN BR OVC010 FM231000 30008KT P6SM VCSH SCT015 OVC025 FM231900 30019G30KT 3SM -SHSN OVC020 FM240000 33012KT P6SM BKN050
Upcoming Changes (Next 12 Hours)
07:45Z BASE
+0h
VFR 330° 5 kt
Visibility: >6SM
Ceiling: 4,000 ft
10:00Z FM231000
+3h
MVFR 300° 8 kt
Visibility: >6SM
Ceiling: 2,500 ft
19:00Z FM231900
+12h
MVFR 300° 19 kt
Visibility: 3SM
Ceiling: 2,000 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
BTM
02
20
11
29
15
33 ✈️

Runway Information

Runway Length Width Surface Heading Wind Component
02/20 5,545 ft 75 ft ASP 38°
5.4 kt 5.9 kt
48° angle
11/29 5,100 ft 75 ft ASP 129°
6.0 kt 5.2 kt
139° angle
✈️ 15/33
Active: 33
9,001 ft 150 ft ASP 167°
7.5 kt 2.7 kt
20° angle
🟢 Active Runway: Best headwind component for current conditions
⬆️ Headwind: Favorable wind component
↔️ Crosswind: ≤10kt Safe, 11-15kt Caution, >15kt Challenging

Weather Statistics - KBTM

5,618 observations | Sep 2025 - Apr 2026

Flight Rules Distribution

VFR
86.5%
MVFR
8.9%
IFR
3.6%
LIFR
1%

Bert Mooney Airport enjoys predominantly VFR conditions, with visual flight rules prevailing 86.5% of the time. Prevailing winds are from the NW averaging 7.1 knots, with gusts recorded up to 31 knots. Calm conditions occur 28.1% of the time. Temperature extremes range from -22°C to 26°C, reflecting significant seasonal variation. The best months for VFR flying are September, March, January.

Wind Analysis

Prevailing Direction: NW (315°)
Average Speed: 7.1 kt
Maximum Recorded: 31 kt
Calm Winds: 28.1%
Direction Distribution:
N
9.9%
NE
3.2%
E
2.6%
SE
9.2%
S
11%
SW
5.9%
W
12.4%
NW
17.6%

Temperature Range

Average: 2.4°C
Range: -22°C to 26°C
-22°C 26°C

Visibility

Average: 9.5 SM
Below 3 SM: 1.8%
Fog Frequency: 1.8%

Best Months for VFR

September March January

Runway Wind Analysis

Runway 02/20
Favorable wind: 100%
Avg crosswind: 5.1 kt
Runway 11/29
Favorable wind: 100%
Avg crosswind: 4 kt
Runway 15/33
Favorable wind: 100%
Avg crosswind: 3.8 kt

Statistics computed from 5,618 METAR observations (Sep 2025 - Apr 2026). Data sourced from official aviation weather services. Updated daily.

Bert Mooney Airport - Airport Information

Airport Details

ICAO Code: KBTM
IATA Code: BTM
Type: medium airport
Status: active
Elevation: 5,550 ft MSL

Location

City: Butte
Country: US
Latitude: 45.954800°
Longitude: -112.497002°
Time Zone: Etc/GMT+7

Runway Information

Runway 02/20
Length: 5,545 ft
Width: 75 ft
Surface: ASP
ILS: No
Runway 11/29
Length: 5,100 ft
Width: 75 ft
Surface: ASP
ILS: No
Runway 15/33
Length: 9,001 ft
Width: 150 ft
Surface: ASP
ILS: No

About Bert Mooney Airport

Overview

Bert Mooney Airport serves the Butte, Montana region as a medium-sized airport situated at a high elevation of 5,550 feet MSL. Located at coordinates 45.954800, -112.497002, the airport provides critical aviation infrastructure for southwestern Montana, supporting regional transportation and local aviation needs.

Flying Conditions

Pilots can expect predominantly VFR conditions 86% of the time, with marginal and instrument conditions occurring less frequently. The airport experiences significant temperature variation, ranging from -18°C to 26°C, with an average temperature of 2.7°C. Prevailing winds from the northwest at an average of 6.6 knots, with occasional gusts up to 31 knots, characterize the local wind environment.

Notable Features

The airport features three asphalted runways with substantial length, offering multiple landing options. Runway 15/33 is the longest at 9,001 feet, providing excellent operational flexibility for various aircraft types. The high elevation and surrounding terrain suggest potential density altitude considerations, particularly during warmer months.

Approach Considerations

All three runways demonstrate 100% favorable wind alignment, with modest average crosswind components (4.5kt, 4kt, and 3.5kt respectively). Visibility averages 9.5 statute miles, with minimal instances of reduced visibility (below 3SM occurring only 1.8% of the time). September, January, and November represent the most consistently favorable VFR months for operations.

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.