Montauk, NY weather in September
Montauk is mild in September, with some rain: highs average 73°F and nights drop to about 60°F. Expect about 10 wet days. A great month for outdoor plans.
- Normal high
- 73°F
- Normal low
- 60°F
- Wet days
- 10
- 3.6 in total
- Muggy days
- 7
- dew point 65°F+
How September changes from start to finish
| September 1 | September 30 | |
|---|---|---|
| Normal high | 77°F | 69°F |
| Normal low | 64°F | 56°F |
| Chance of a wet day | 31% | 33% |
| Sunrise / sunset | 6:14 am / 7:21 pm | 6:43 am / 6:32 pm |
| Daylight | 13.1 h | 11.8 h |
Chance of a wet day: average for the first and last 7 days of the month. Times are local clock time (Eastern Time).
A typical September day
- 6 am59°Fdew point 55°F
- 9 am67°Fdew point 57°F
- Noon72°Fdew point 56°F
- 3 pm73°Fdew point 56°F
- 6 pm67°Fdew point 57°F
- 9 pm63°Fdew point 57°F
NOAA hourly normals (local standard time) from Providence T F Green Airport (55 mi away); average wind 8 mph.
What kind of days to expect
- Comfortable dayshigh 65-80°F and dew point under 60°F15 of 30
- Beach dayshigh 80-95°F, under 0.05 in of rain, afternoon wind under 15 mph3 of 30
- Hot dayshigh 90°F or more0 of 30
- Muggy daysdaily mean dew point 65°F or more7 of 30
- Wet daysat least 0.01 in of rain or melted snow10 of 30
- Notable rainat least 0.10 in5 of 30
- Freezing nightslow 32°F or below0 of 30
- Snow on the groundsnow depth 1 in or more0 of 30
Average days per September, counted from daily records for each year 1991-2020.
Rain in September
Normal precipitation is 3.6 in; a dry September brings about 1.7 in and a wet one about 5.2 in (25th and 75th percentiles). About 2 days bring half an inch or more, and about 1 an inch or more.
How September varies from year to year
- Warmest September, 1991-20202015: average high 77°F
- Coolest September2013: average high 71°F
- Wettest September2008: 8.7 in
- Driest September2020: 0.8 in
- Highest reading91°F (September 1, 2010)
- Lowest reading39°F (September 30, 2000)
From the station's daily records with NOAA quality flags removed; most recent date shown when a reading repeats.
September compared with August and October
| August | September | October | |
|---|---|---|---|
| Normal high | 80°F | 73°F | 63°F |
| Normal low | 66°F | 60°F | 51°F |
| Wet days | 9 | 10 | 11 |
| Comfortable days | 6 | 15 | 11 |
| Daylight | 13.8 h | 12.5 h | 11.1 h |
Highs change by -7°F from August and -10°F into October.
Nearby alternatives in September
- Warmer: Paterson, NJ116 mi · high 78°F · 9 wet days
- Cooler: Lake Placid, NY247 mi · high 66°F · 12 wet days
How Montauk ranks in September
- Normal high316th warmest of 378 cities; 6th of 10 in New York
- Wet days300th driest of 378
- Comfortable days70th most of 342
What to pack for Montauk in September
- A rain jacket or umbrella – rain on about 10 days
Heating and cooling
September has 42 heating degree days and 95 cooling degree days (base 65°F), 2% of the year's total heating and cooling demand.
Questions
How hot is Montauk in September?
The normal high is 73°F and the normal low is 60°F. From 1991 to 2020 the hottest September reading was 91°F (September 1, 2010).
Does it rain a lot in Montauk in September?
About 10 days in September have at least 0.01 in of precipitation, and the normal total is 3.6 in. The wettest September in 1991-2020 was in 2008 (8.7 in); the driest was in 2020 (0.8 in).
Is September a good time to visit Montauk?
September ranks 3rd of 12 months on our comfort score for Montauk (70 out of 100). It has about 15 comfortable days. The best months are May, June and September.
Where the numbers come from
- Temperature, rain and frost dates: Montauk Airport (USW00054780), 3.0 mi NNE of the city center, 7 ft . NOAA normals and daily records, 1991-2020.
- Snowfall and snow depth: Bridgehampton (USC00300889), 19 mi WSW of the city center, 42 ft . NOAA normals and daily records, 1991-2020.
- Humidity and wind by hour: Providence T F Green Airport (USW00014765), 55 mi NNE of the city center, 60 ft . NOAA normals and daily records, 1991-2020.
- Daily humidity and wind: Groton-New London Airport (725046-14707), 21 mi NNW of the city center, 8 ft . Hourly observations, 1991-2020.
- Not available for this location: cloud cover (no station close enough or similar enough in elevation).