Current Weather
Raw METAR
Weather Briefing
VFRGrant County International Airport is currently reporting visual flight rules (VFR) conditions with clear skies and 10 SM visibility.
Wind Analysis
Winds are from the southwest (230°) at 18 knots with gusts to 25 knots. Runway 22 is favored with a 18-knot headwind and 3-knot crosswind component (gusting to 4 knots crosswind). Student pilots and low-time aviators should exercise caution.
Visibility & Ceiling
Visibility is 10 SM. Skies are clear with unlimited ceiling.
Temperature & Moisture
Temperature is 18°C (64°F) with a dewpoint of 2°C, indicating very dry conditions.
Forecast Outlook
The TAF forecast covers the next 24 hours. Conditions are expected to remain VFR throughout the forecast period.
Pilot Recommendations
Conditions are favorable for visual flight.
This briefing is generated from real-time METAR and TAF data. Always verify with official sources before flight.
Forecast (TAF)
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Airport Runway Layout
Runway Information
| Runway | Length | Width | Surface | Heading | Wind Component |
|---|---|---|---|---|---|
|
✈️ 04/22
Active: 22
|
10,000 ft | 100 ft | PEM | 54° |
↑ 17.7 kt
•
↔ 3.1 kt
10° angle
|
| 09/27 | 3,500 ft | 90 ft | CON | 108° |
↓ 9.5 kt
•
↔ 15.3 kt
122° angle
|
| 14L/32R | 13,503 ft | 200 ft | PEM | 162° |
↑ 6.7 kt
•
↔ 16.7 kt
68° angle
|
| 14R/32L | 2,937 ft | 75 ft | CON | 162° |
↑ 6.7 kt
•
↔ 16.7 kt
68° angle
|
| 18/36 | 3,307 ft | 75 ft | ASP | 198° |
↑ 15.3 kt
•
↔ 9.5 kt
32° angle
|
Weather Statistics - KMWH
6,587 observations | Sep 2025 - May 2026Flight Rules Distribution
Grant County International Airport typically experiences VFR conditions 75.9% of the time, though instrument-rated pilots will find IFR weather present approximately 13.8% of observations. Prevailing winds are from the N averaging 6.7 knots, with gusts recorded up to 34 knots. Calm conditions occur 16.2% of the time. Temperature extremes range from -9°C to 32°C, reflecting significant seasonal variation. The best months for VFR flying are May, April, September.
Wind Analysis
Temperature Range
Visibility
Best Months for VFR
Runway Wind Analysis
Statistics computed from 6,587 METAR observations (Sep 2025 - May 2026). Data sourced from official aviation weather services. Updated daily.
Grant County International Airport - Airport Information
Airport Details
Location
Runway Information
Flight Planning Tools
Nearby Airports
About Grant County International Airport
Overview
Grant County International Airport serves the Moses Lake region in central Washington state, positioned at an elevation of 1,189 feet MSL. The airport features five runways, with the primary runway 14L/32R extending an impressive 13,503 feet, making it suitable for a wide range of aircraft operations. Its medium-sized classification and substantial runway infrastructure suggest significant utility for both commercial and general aviation purposes.
Flying Conditions
Weather conditions at KMWH demonstrate predominantly favorable flying conditions, with visual flight rules (VFR) prevailing in 71.1% of observations. Temperature variations range from -8°C to 32°C, creating diverse atmospheric conditions throughout the year. Wind patterns are characterized by a northerly prevailing direction at an average of 6.4 knots, with occasional gusts up to 34 knots and calm periods occurring 17.6% of the time.
Notable Features
The airport's multiple runways offer exceptional operational flexibility, with five distinct runway alignments accommodating various wind conditions. The longest runway (14L/32R) at 13,503 feet provides substantial landing and takeoff capabilities for larger aircraft. Positioned in central Washington's open terrain, the airport benefits from relatively consistent wind patterns and good visibility, averaging 8.8 statute miles across recorded observations.
Approach Considerations
All runways demonstrate 100% favorable wind alignment, with minimal average crosswind components ranging from 2.9 to 5.1 knots. September, October, and December emerge as the most consistently favorable months for visual flight operations. Pilots should anticipate good visibility conditions, with only 3.2% of observations reporting visibility below 3 statute miles and occasional fog presence at 6.7% of recorded periods.
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.
Learn More
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Official Data Sources
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.