As of 17:12 EDT

Iselin, NJ weather in September

86°

Iselin, Saturday, 8 August, 17:12

Partly cloudy. Feels like 95°. High 87°, low 71°.

Pressure29.91 inHg

Wind13.1 mph W

Humidity68%

Visibility6.2 mi

Dew point73°

See detailed hourly forecast

In September, Iselin, NJ averages a high of 75.4° and a low of 60.6°. About 3.9 inches of precipitation fall over the month (9 wet days). The record high is 96.4° (2023) and the record low 41.5° (1963). Normals are computed over the last 60 years.

Day	High	Low	Chance of precip.	Record high	Record low
1	79.3°	64.9°	30%	94.8° (2010)	53.6° (2017)
2	79.3°	64°	32%	96.1° (1980)	52.3° (2017)
3	79.7°	64.2°	32%	92.5° (1993)	50.7° (1967)
4	80.1°	64.6°	30%	93° (2023)	52.7° (2024)
5	79.3°	64.2°	20%	96.4° (2023)	54.1° (1997)
6	78.6°	63.9°	32%	95.4° (2023)	52.5° (1984)
7	79.3°	63°	33%	92.8° (2023)	50.5° (1984)
8	78.3°	62.6°	28%	93.2° (2015)	50.5° (2024)
9	77.7°	62.8°	28%	90.5° (1964)	50.2° (2024)
10	77.5°	62.8°	38%	93.9° (1983)	51.3° (1975)
11	77.2°	61.7°	23%	95.7° (1983)	51.4° (1967)
12	77.2°	61.5°	23%	92.5° (2005)	50.5° (1967)
13	77.4°	61.5°	28%	92.5° (2005)	49.5° (1985)
14	77°	61.9°	28%	90.9° (2016)	48.7° (1975)
15	74.8°	60.8°	23%	88.3° (2021)	48.2° (1975)
16	74.5°	59.7°	35%	91.4° (1970)	47.8° (1984)
17	74.5°	59.7°	37%	91.8° (1991)	47.1° (1986)
18	74.5°	59.9°	30%	86.9° (1965)	46.4° (1990)
19	74.3°	58.6°	28%	90.5° (1983)	47.7° (2020)
20	74.3°	58.8°	20%	90.1° (1983)	46.9° (2020)
21	74.5°	59.2°	25%	87.6° (1965)	44.8° (1962)
22	73.9°	59.2°	33%	91.4° (1970)	45.7° (2020)
23	72.7°	58.1°	32%	93.2° (1970)	46.2° (1963)
24	71.2°	57°	27%	89.4° (2017)	41.5° (1963)
25	71.2°	57°	25%	90.5° (1970)	43.2° (1963)
26	72.5°	57.9°	37%	90.7° (2007)	46.4° (1963)
27	72.7°	57.7°	33%	88.5° (1998)	47.1° (1966)
28	71.4°	57.9°	38%	84.7° (2019)	44.6° (1989)
29	69.3°	56.5°	32%	79.9° (2014)	44.2° (2000)
30	68.2°	54.9°	28%	86.2° (1986)	44.6° (2000)