KDAY TAF
Terminal aerodrome forecast for James M Cox Dayton International (DAY · KDAY), Dayton, OH. Issued 21 Sep 2026 0359Z, valid 0400Z to 0000Z, decoded period by period below. · Open on the map
All of James M Cox Dayton International — runways, frequencies, charts and live weatherTAF issued 21 Sep 2026 0359Z
valid 0400Z to 0000ZTAF KDAY 210359Z 2104/2124 04009KT P6SM -SHRA OVC004 PROB30 2110/2113 5SM -TSRA BR OVC004CB FM211300 04009KT P6SM OVC007 FM212200 05011KT P6SM OVC015
Times are UTC (Zulu), as they appear in the bulletin.
Period by period
| Period (UTC) | Change | Wind | Vis | Ceiling | Sky | Cat |
|---|---|---|---|---|---|---|
| 0400Z to 1300Z | Initial | 040° at 9 kt | 6+ SM | 400 ft OVC | Overcast at 400 ft AGL | LIFR |
| 1000Z to 1300Z | PROB | Calm | 5 SM | 400 ft OVC | Overcast at 400 ft AGL | LIFR |
| 1300Z to 2200Z | FM | 040° at 9 kt | 6+ SM | 700 ft OVC | Overcast at 700 ft AGL | IFR |
| 2200Z to 0000Z | FM | 050° at 11 kt | 6+ SM | 1,500 ft OVC | Overcast at 1,500 ft AGL | MVFR |
What the change groups mean
- FM
- From — a rapid, permanent change to the conditions that follow.
What the categories mean
- LIFR
- Low IFR — ceiling below 500 ft and/or visibility less than 1 SM.
- IFR
- Instrument flight rules — ceiling 500 to 999 ft and/or visibility 1 to less than 3 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 KDAY?
The forecast issued 21 Sep 2026 0359Z for James M Cox Dayton International reads: TAF KDAY 210359Z 2104/2124 04009KT P6SM -SHRA OVC004 PROB30 2110/2113 5SM -TSRA BR OVC004CB FM211300 04009KT P6SM OVC007 FM212200 05011KT P6SM OVC015
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 KDAY
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.
Something here wrong or out of date? Report a data problem.