Current Weather
Raw METAR
Weather Briefing
VFRGrissom Air Reserve Base is currently reporting visual flight rules (VFR) conditions with clear skies and 10 SM visibility. Note: This observation is 10.8 hours old and conditions may have changed.
Wind Analysis
Winds are from the south-southeast (160°) at 5 knots. Runway 23 is favored with a 2-knot headwind and 5-knot crosswind component.
Visibility & Ceiling
Visibility is 10 SM. Skies are clear with unlimited ceiling.
Temperature & Moisture
Temperature is 6°C (43°F) with a dewpoint of -2°C, indicating moderate moisture conditions.
Forecast Outlook
The TAF forecast covers the next 30 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 Showers Rain, Light Thunderstorm Rain, Mist. Winds are forecast to reach up to 20 knots during the period. Expect variable wind speeds ranging from 6 to 20 knots. Temporary MVFR conditions are forecast with Light Thunderstorm Rain between 00:00Z and 04:00Z.
Pilot Recommendations
Conditions are favorable for visual flight. 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.
Forecast (TAF)
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Airport Runway Layout
Runway Information
| Runway | Length | Width | Surface | Heading | Wind Component |
|---|---|---|---|---|---|
|
✈️ 05/23
Active: 23
|
12,501 ft | 200 ft | ASP | 44° |
↑ 1.7 kt
•
↔ 4.7 kt
70° angle
|
Weather Statistics - KGUS
8,254 observations | Sep 2025 - Apr 2026Flight Rules Distribution
Grissom Air Reserve Base is frequently affected by reduced visibility conditions, with VFR weather only 53.4% of the time and IFR/LIFR conditions occurring in 18.9% of observations. Prevailing winds are from the W averaging 10.2 knots, with gusts recorded up to 110 knots. Temperature extremes range from -22°C to 32°C, reflecting significant seasonal variation. The best months for VFR flying are September, October, April.
Wind Analysis
Temperature Range
Visibility
Best Months for VFR
Runway Wind Analysis
Statistics computed from 8,254 METAR observations (Sep 2025 - Apr 2026). Data sourced from official aviation weather services. Updated daily.
Grissom Air Reserve Base - Airport Information
Airport Details
Location
Runway Information
Flight Planning Tools
Nearby Airports
About Grissom Air Reserve Base
Overview
Grissom Air Reserve Base is located in Peru, Indiana, serving as a medium-sized military airfield. The base sits at an elevation of 812 feet MSL and supports critical air mobility and reserve operations in the midwest region. Its strategic location and substantial 12,501-foot runway make it a significant regional aviation facility.
Flying Conditions
Pilots can expect predominantly favorable flying conditions, with 53.4% of observations reporting VFR weather. The base experiences moderate wind conditions, with a prevailing westerly wind at an average of 10.1 knots. Temperature variations are significant, ranging from -19°C to 32°C, which can impact aircraft performance and flight planning.
Notable Features
The airport features a single runway (05/23) with an asphalt surface, capable of handling substantial aircraft operations. Wind analysis shows 100% runway favorability, with an average crosswind of 6.3 knots. Visibility is generally excellent, averaging 9 statute miles, with only 1.9% of observations reporting visibility below 3 miles.
Approach Considerations
September through November represent the most consistent VFR months for operations. Pilots should anticipate westerly winds and prepare for potential temperature-related performance considerations. The long runway provides substantial operational flexibility, and the low percentage of IFR conditions (14.5%) suggests generally reliable approach and landing environments.
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
Recommended guides based on current conditions at KGUS
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.