Geis Field Private
4WN4 · Fredonia, WI · Non-towered · Print kneeboard · Open on the map
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Weather
METAR observed
TAF forecast
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Sun & FAA night2026-09-21 · night begins 07:20 PM
| Event | Local (CDT) | UTC |
|---|---|---|
| Morning civil twilight Loggable night ends | 06:09 AM | 11:09Z |
| Sunrise | 06:38 AM | 11:38Z |
| Sunset | 06:51 PM | 23:51Z |
| Evening civil twilight Loggable night begins | 07:20 PM | 00:20Z |
Plan a flight from 4WN4
Winds aloft NOAA forecast · 3,000 to 53,000 ft
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Full reports: nearest reporting station
Advisories
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Airspace hazards · Checking SIGMETs and G-AIRMETs…
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Runways
RWY 18RIGHT trafficRP · charted
- Heading
- 179° true
- Dimensions
- 846 × 50 ft
- TPA
- 1,900 ft MSL (≈1,000 AGL) · standard
- Surface
- Turf
- CTAF
- 122.9
Enter the right downwind (heading 359°) on the 45° at 1,900 ft MSL (≈1,000 AGL).
More details — RWY 18
- Threshold elev
- 851 ft
- TDZ elevation
- 851 ft
Pattern side: FAA NASR · TPA standard 1,000 ft AGL (not charted) · layout: FAA runway-end coordinates
Headings shown are true (magnetic variation unavailable).
| Runway | Length | Your margin |
|---|---|---|
| 18/36 | 846 ft | |
| 09/27 | 533 ft |
Prefer one flat page? Full runway details for 4WN4 → · New to pattern entries? The 45° entry, explained → · Teaching here? Print the 4WN4 kneeboard →
Comms & NavAids
Communication frequencies
Taxi & takeoff
Source: FAA NASR (current 28-day cycle).
Nearby navigation aids
BJB 109.80 · BAE 116.40 · OSH 116.75
| NavAid | Type | Freq · ch | Range | Radial / Dist magnetic |
|---|---|---|---|---|
| BJB · West Bend | VOR | 109.80 | Terminal | r058° / 9.7 NM |
| BAE · Badger | VOR/DME | 116.40 · 111X | High | r031° / 28 NM |
| OSH · Oshkosh | VOR/DME | 116.75 · 114Y | Low | r135° / 39.4 NM |
Prefer one flat list? All 4WN4 frequencies →
Charts & procedures
No published instrument procedures or Chart Supplement for 4WN4 — open it on the VFR sectional →
Airport info
Airport information
- FAA LID
- 4WN4
- Coordinates
- 43.5095, -87.9387
- Elevation
- 852 ft MSL
- Sectional chart
- CHICAGO
- Airport use
- Private
- Control tower
- No
- ARTCC
- CHICAGO (ZAU)
- Flight service (FSS)
- GREEN BAY · 122.2 · 1-800-WX-BRIEF
- Segmented circle
- No
- Activated
- 2023/09
- Distance from city
- 2 NNE
Night operations
- Pilot-controlled lighting
- Usually keyed on CTAF 122.9 — confirm the click sequence in the Chart Supplement
FAA night windows (civil twilight, loggable night §1.1, currency §61.57) are under Sun & FAA night in the Weather section.
Ownership & management 2 contacts
Nearby airports
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Also nearby: 35W Port Washington/Didier Field (5 NM) · 2WI8 Davies (private) (9 NM) · 9WN6 Oostburg (private) (10 NM) · WI62 Sss Aerodrome (private) (15 NM)
About 4WN4
Geis Field (4WN4) is an airport in Fredonia, WI, at 852 ft MSL. It has 2 runways, the longest 846 ft, with no control tower (pilot-controlled). This page shows live METAR/TAF weather, runway crosswinds, frequencies, navaids, and FAA charts for 4WN4, refreshed from the Aviation Weather Center and FAA NASR.
Does 4WN4 have a control tower?
No. Geis Field is a non-towered (pilot-controlled) airport; use the published CTAF/UNICOM in the Comms & NavAids section.
What is the longest runway at 4WN4?
Geis Field has 2 runways; the longest is 846 ft. See the Runways section for headings, surface, and lighting.
Where is 4WN4?
Geis Field is in Fredonia, WI, at an elevation of 852 ft MSL. Coordinates: 43.5095, -87.9387.
More about 4WN4
Weather is live from the Aviation Weather Center; airport facility data is from the FAA NASR (28-day cycle). For planning and education only; always verify against official sources. Open 4WN4 in a full tool: METAR/TAF decoder, crosswind calculator, sun & night times, or the density altitude calculator. Planning from here? Find the nearest airport with fuel or an approach, or check whether an IFR alternate is required.
Something here wrong or out of date? Report a data problem.