As of 17:54 EDT

Brookhaven, NY weather in September

87°

Brookhaven, Sunday, 9 August, 17:54

Clear. Feels like 89°. High 88°, low 72°.

Pressure29.94 inHg

Wind5 mph NW

Humidity51%

Visibility6.2 mi

Dew point66°

See detailed hourly forecast

In September, Brookhaven, NY averages a high of 71.7° and a low of 62.8°. About 3.9 inches of precipitation fall over the month (9 wet days). The record high is 90.3° (2023) and the record low 47.1° (2000). Normals are computed over the last 60 years.

Day	High	Low	Chance of precip.	Record high	Record low
1	75.4°	66.6°	25%	87.4° (2010)	54.9° (2017)
2	74.8°	65.7°	28%	86.5° (1966)	56.1° (2017)
3	75.2°	66°	30%	84.2° (1973)	53.8° (2025)
4	75.6°	66.2°	22%	87.3° (2018)	55.6° (1997)
5	74.8°	65.8°	18%	90.3° (2023)	55.9° (2000)
6	74.5°	65.7°	33%	90.3° (2023)	55.8° (1962)
7	74.7°	65.3°	32%	89.8° (2023)	56.1° (1984)
8	73.8°	64.8°	25%	84.9° (2015)	55.2° (2024)
9	73.4°	64.4°	27%	84.6° (2016)	55.2° (2024)
10	73.6°	64.4°	27%	86.4° (1983)	55° (1978)
11	73.6°	63.9°	25%	88.2° (1983)	53.4° (1967)
12	72.9°	63.7°	23%	84.9° (2005)	53.4° (1967)
13	73°	64°	28%	83.7° (2005)	51.6° (1963)
14	73°	64°	37%	80.2° (1995)	52.2° (1975)
15	71.6°	62.8°	33%	79° (2025)	54.1° (1975)
16	71.1°	62.1°	25%	81.3° (1991)	51.3° (1984)
17	70.9°	62.1°	28%	82.4° (1991)	50.4° (1986)
18	71.1°	62.6°	25%	80.6° (1965)	50.7° (1990)
19	71.1°	61.3°	30%	83.5° (2024)	51.1° (2020)
20	70.3°	61.3°	27%	80.2° (1983)	50.5° (1979)
21	70.3°	61.5°	27%	78.6° (2016)	48.2° (1962)
22	70.3°	61.2°	38%	82.2° (1980)	50.5° (2020)
23	69.6°	60.6°	38%	83.3° (1970)	47.3° (1963)
24	68.2°	59.5°	32%	83.1° (2017)	47.3° (1963)
25	68.2°	59.9°	23%	80.8° (2010)	49.3° (1967)
26	68.7°	60.6°	40%	78.8° (1970)	51.6° (1967)
27	69.4°	60.4°	28%	80.8° (2017)	48.9° (1989)
28	68.9°	60.4°	40%	75.9° (2025)	48.6° (1989)
29	66.7°	59°	35%	76.6° (2019)	47.1° (2000)
30	65.8°	57.9°	33%	77° (1986)	47.7° (1991)