KACK METAR

Current observed weather at Nantucket Memorial (ACK · KACK), Nantucket, MA, elevation 47 ft. Reported 21 Sep 2026 0253Z, decoded below with the past 24 hours of observations. · Open on the map

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METAR observed 21 Sep 2026 0253Z

MVFR

METAR KACK 210253Z AUTO 11012KT 5SM -RA BR FEW006 BKN034 OVC042 17/16 A2998 RMK AO2 RAB28 SLP153 P0001 60004 T01670161 56005

Wind

110° at 12 kt

Visibility

5 SM

Ceiling

3,400 ft BKN

Temp / Dewpoint

17° / 16°C

Altimeter

29.98"

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

What it says

Field	Value	What that means
Flight category	MVFR	Marginal VFR — ceiling 1,000 to 3,000 ft and/or visibility 3 to 5 SM.
Wind	110° at 12 kt	Direction is degrees true, as reported.
Visibility	5 SM	Prevailing horizontal visibility in statute miles.
Ceiling	3,400 ft BKN	Lowest BKN layer, 3,400 ft above the field.
Sky	Few at 600 ft AGL, Broken at 3,400 ft AGL, Overcast at 4,200 ft AGL	—
Temperature	17°C (62°F)	—
Dewpoint	16°C (61°F)	—
Temp/dewpoint spread	1°C	A spread of 2°C or less favours fog or low stratus forming.
Altimeter	29.98 inHg	Set this in the Kollsman window; it is the field’s current sea level pressure setting.

VFRMVFRIFRLIFRhover for the full observation

Flight category

Wind · kt (gust shading)

Ceiling · ft (log scale, ▲ = unlimited)

Visibility · SM

All 24 stored observations time · category · wind · visibility · ceiling · temp

Time	Category	Wind	Visibility	Ceiling	Temp
0353Z	VFR	080° at 5 kt	10+ SM	Clear	13°C
0453Z	VFR	090° at 6 kt	10+ SM	Clear	12°C
0553Z	VFR	110° at 5 kt	10+ SM	Clear	12°C
0653Z	VFR	110° at 6 kt	10+ SM	Clear	13°C
0753Z	VFR	110° at 6 kt	10+ SM	Clear	13°C
0853Z	VFR	110° at 6 kt	10+ SM	Clear	13°C
0953Z	VFR	100° at 6 kt	10+ SM	Clear	14°C
1053Z	VFR	110° at 6 kt	10+ SM	11,000 ft	14°C
1153Z	VFR	110° at 8 kt	10+ SM	11,000 ft	15°C
1253Z	VFR	110° at 10 kt	10+ SM	Clear	16°C
1353Z	VFR	130° at 10 kt	10+ SM	Clear	17°C
1453Z	VFR	130° at 11 kt	10+ SM	Clear	18°C
1553Z	VFR	120° at 10 kt	10+ SM	11,000 ft	17°C
1653Z	VFR	110° at 9 kt	10+ SM	11,000 ft	17°C
1753Z	VFR	100° at 8 kt	10+ SM	9,000 ft	16°C
1853Z	VFR	110° at 8 kt	10+ SM	7,500 ft	16°C
1953Z	VFR	110° at 7 kt	6 SM	4,400 ft	16°C
2053Z	VFR	110° at 9 kt	10+ SM	6,500 ft	16°C
2153Z	VFR	110° at 7 kt	6 SM	5,500 ft	16°C
2253Z	VFR	120° at 8 kt	7 SM	5,500 ft	16°C
2353Z	VFR	120° at 9 kt	6 SM	3,700 ft	16°C
0053Z	MVFR	120° at 9 kt	4 SM	2,500 ft	16°C
0153Z	VFR	100° at 9 kt	10+ SM	5,000 ft	17°C
0253Z	MVFR	110° at 12 kt	5 SM	3,400 ft	17°C

Frequently asked

What is the current METAR at KACK?

The 21 Sep 2026 0253Z observation at Nantucket Memorial reads: METAR KACK 210253Z AUTO 11012KT 5SM -RA BR FEW006 BKN034 OVC042 17/16 A2998 RMK AO2 RAB28 SLP153 P0001 60004 T01670161 56005

Is KACK VFR right now?

Nantucket Memorial is reporting MVFR. Marginal VFR — ceiling 1,000 to 3,000 ft and/or visibility 3 to 5 SM.

How often is the KACK METAR updated?

Routine observations are issued hourly, usually in the 5 minutes before the hour. A SPECI is issued between them whenever conditions change significantly — a ceiling or visibility crossing a category threshold, a wind shift, or the onset of precipitation or a thunderstorm.

More about KACK

Observations 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.