KMVN TAF

Terminal aerodrome forecast for Mount Vernon (MVN · KMVN), Mount Vernon, IL. Issued 20 Sep 2026 2320Z, valid 0000Z to 0000Z, decoded period by period below. · Open on the map

All of Mount Vernon — runways, frequencies, charts and live weather

TAF issued 20 Sep 2026 2320Z

valid 0000Z to 0000Z

TAF KMVN 202320Z 2100/2124 32003KT P6SM BKN250 FM210600 03007KT P6SM BKN014 TEMPO 2106/2109 4SM -TSRA OVC012CB FM210900 04006KT P6SM -SHRA BKN012 FM211600 02006KT P6SM SCT080

Times are UTC (Zulu), as they appear in the bulletin.

Period by period

Period (UTC)	Change	Wind	Vis	Ceiling	Sky	Cat
0000Z to 0600Z	Initial	320° at 3 kt	6+ SM	25,000 ft BKN	Broken at 25,000 ft AGL	VFR
0600Z to 0900Z	FM	030° at 7 kt	6+ SM	1,400 ft BKN	Broken at 1,400 ft AGL	MVFR
0600Z to 0900Z	TEMPO	Calm	4 SM	1,200 ft OVC	Overcast at 1,200 ft AGL	MVFR
0900Z to 1600Z	FM	040° at 6 kt	6+ SM	1,200 ft BKN	Broken at 1,200 ft AGL	MVFR
1600Z to 0000Z	FM	020° at 6 kt	6+ SM	Clear	Scattered at 8,000 ft AGL	VFR

What the change groups mean

FM: From — a rapid, permanent change to the conditions that follow.
TEMPO: Temporary — expected for less than half the period, in spells under an hour.

What the categories mean

VFR: Visual flight rules — ceiling above 3,000 ft and visibility greater than 5 SM.
MVFR: Marginal VFR — ceiling 1,000 to 3,000 ft and/or visibility 3 to 5 SM.

Frequently asked

What is the current TAF for KMVN?

The forecast issued 20 Sep 2026 2320Z for Mount Vernon reads: TAF KMVN 202320Z 2100/2124 32003KT P6SM BKN250 FM210600 03007KT P6SM BKN014 TEMPO 2106/2109 4SM -TSRA OVC012CB FM210900 04006KT P6SM -SHRA BKN012 FM211600 02006KT P6SM SCT080

How far ahead does a TAF forecast?

A TAF covers a 24-hour period at most airports and 30 hours at larger ones, issued four times a day at 0000Z, 0600Z, 1200Z and 1800Z. It describes conditions within roughly 5 statute miles of the airport, not the surrounding area.

What do FM, BECMG and TEMPO mean?

FM (from) marks a rapid, permanent change at the stated time. BECMG (becoming) marks a gradual change over the stated window. TEMPO marks conditions expected for less than half the period, in spells of under an hour each. PROB30 and PROB40 give the probability of the conditions that follow.

More about KMVN

Forecasts from the US National Weather Service Aviation Weather Center. Times are UTC (Zulu). For planning and education only — always confirm with an official preflight briefing.

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