As of 01:42 EDT

Weather in Iselin, NJ

54°Current weather

Iselin, Monday, 12 October, 01:42

Overcast. Feels like 54°. High 72°, low 54°.

Pressure29.77 inHg
Wind16.1 mph N
Humidity95%
Visibility6.2 mi
Dew point53°

Monthly outlook for Iselin, NJ: average high 62.5°, average low 50.3°. That is 0.2° below the climate normal for October. Precipitation is expected on 3 days (about 1.7 inches), against a normal of 4 days and 1.9 inches. The warmest day looks like 14 October (80.1°), the coolest 18 October (38.3°).

62.5°/50.3°
Average high / low
−0.2°
Below normal
3 / 4
Wet days / normal
1.7 in
Precipitation this month

Ten-day blocks vs climate normal

PeriodForecast highNormalDifference
12 October – 21 October66.9°63.9°+1.7°
22 October – 31 October55.2°60.1°-2.7°
1 November – 10 Novemberat normal57.3°—

October records over 66 years

91.9°2 October 2019All-time high
29.3°31 October 2020All-time low
Tue, 1376° / 53°0Clear
76 °Clear

Iselin, Tuesday, 13 October

Clear. High 76°, low 53°.

Pressure29.94 inHg
Wind4.2 mph S
Humidity74%
Visibility6.2 mi
Dew point62°
Wed, 1480° / 64°0Overcast
80 °Overcast

Iselin, Wednesday, 14 October

Overcast. High 80°, low 64°.

Pressure29.88 inHg
Wind8.5 mph W
Humidity62%
Visibility6.2 mi
Dew point64°
Thu, 1566° / 56°0Overcast
66 °Overcast

Iselin, Thursday, 15 October

Overcast. High 66°, low 56°.

Pressure30.18 inHg
Wind2.6 mph NE
Humidity63%
Visibility6.2 mi
Dew point51°
Fri, 1672° / 54°0.56Rain
72 °Rain

Iselin, Friday, 16 October

Rain. High 72°, low 54°.

Pressure29.62 inHg
Wind14.4 mph SW
Humidity97%
Visibility—
Dew point65°
Sat, 1751° / 40°0Clear
51 °Clear

Iselin, Saturday, 17 October

Clear. High 51°, low 40°.

Pressure30.21 inHg
Wind13.8 mph NW
Humidity51%
Visibility—
Dew point31°
Sun, 1854° / 38°0Clear
54 °Clear

Iselin, Sunday, 18 October

Clear. High 54°, low 38°.

Pressure30.68 inHg
Wind8.9 mph SW
Humidity28%
Visibility—
Dew point14°
Mon, 1962° / 44°0Clear
62 °Clear

Iselin, Monday, 19 October

Clear. High 62°, low 44°.

Pressure30.53 inHg
Wind10.5 mph SW
Humidity37%
Visibility—
Dew point27°
Tue, 2069° / 51°0Mostly clear
69 °Mostly clear

Iselin, Tuesday, 20 October

Mostly clear. High 69°, low 51°.

Pressure30.36 inHg
Wind5.7 mph W
Humidity40%
Visibility—
Dew point37°
Wed, 2166° / 56°0Overcast
66 °Overcast

Iselin, Wednesday, 21 October

Overcast. High 66°, low 56°.

Pressure30.39 inHg
Wind9.8 mph E
Humidity66%
Visibility—
Dew point50°
Thu, 2263° / 58°0.06Light rain
63 °Light rain

Iselin, Thursday, 22 October

Light rain. High 63°, low 58°.

Pressure30.33 inHg
Wind12 mph SE
Humidity73%
Visibility—
Dew point53°
Fri, 2363° / 53°1.04Heavy rain
63 °Heavy rain

Iselin, Friday, 23 October

Heavy rain. High 63°, low 53°.

Pressure29.80 inHg
Wind15.2 mph S
Humidity84%
Visibility—
Dew point57°
Sat, 2454° / 47°0Light rain
54 °Light rain

Iselin, Saturday, 24 October

Light rain. High 54°, low 47°.

Pressure29.47 inHg
Wind17 mph NW
Humidity54%
Visibility—
Dew point37°
Sun, 2548° / 44°0.01Light rain
48 °Light rain

Iselin, Sunday, 25 October

Light rain. High 48°, low 44°.

Pressure29.47 inHg
Wind16.9 mph NW
Humidity68%
Visibility—
Dew point35°
Mon, 2652° / 47°0Overcast
52 °Overcast

Iselin, Monday, 26 October

Overcast. High 52°, low 47°.

Pressure29.71 inHg
Wind10.9 mph NW
Humidity57%
Visibility—
Dew point37°
Tue, 2752° / 47°0Overcast
52 °Overcast

Iselin, Tuesday, 27 October

Overcast. High 52°, low 47°.

Pressure29.80 inHg
Wind10.1 mph NW
Humidity54%
Visibility—
Dew point34°
From day 17 onward the outlook is built from 60-year climate statistics
Wed, 2860° / 46°0.14Climate normal
60 °Climate normal

Iselin, Wednesday, 28 October

Climate normal for this date — 60-year average.

Average high60°
Average low46°
Average precipitation0.14 in
Chance of precipitation28%
Record high80° (2023)
Record low31° (1976)
Thu, 2958° / 44°0.21Climate normal
58 °Climate normal

Iselin, Thursday, 29 October

Climate normal for this date — 60-year average.

Average high58°
Average low44°
Average precipitation0.21 in
Chance of precipitation30%
Record high75° (1984)
Record low32° (1965)
Fri, 3058° / 44°0.09Climate normal
58 °Climate normal

Iselin, Friday, 30 October

Climate normal for this date — 60-year average.

Average high58°
Average low44°
Average precipitation0.09 in
Chance of precipitation23%
Record high78° (2024)
Record low34° (2011)
Sat, 3159° / 44°0.06Climate normal
59 °Climate normal

Iselin, Saturday, 31 October

Climate normal for this date — 60-year average.

Average high59°
Average low44°
Average precipitation0.06 in
Chance of precipitation15%
Record high81° (2024)
Record low29° (2020)
Sun, 0160° / 46°0.09Climate normal
60 °Climate normal

Iselin, Sunday, 1 November

Climate normal for this date — 60-year average.

Average high60°
Average low46°
Average precipitation0.09 in
Chance of precipitation23%
Record high79° (2024)
Record low34° (1983)
Mon, 0260° / 46°0.08Climate normal
60 °Climate normal

Iselin, Monday, 2 November

Climate normal for this date — 60-year average.

Average high60°
Average low46°
Average precipitation0.08 in
Chance of precipitation30%
Record high76° (1982)
Record low31° (2023)
Tue, 0360° / 45°0.08Climate normal
60 °Climate normal

Iselin, Tuesday, 3 November

Climate normal for this date — 60-year average.

Average high60°
Average low45°
Average precipitation0.08 in
Chance of precipitation22%
Record high77° (2003)
Record low33° (2002)
Wed, 0458° / 44°0.06Climate normal
58 °Climate normal

Iselin, Wednesday, 4 November

Climate normal for this date — 60-year average.

Average high58°
Average low44°
Average precipitation0.06 in
Chance of precipitation15%
Record high73° (1974)
Record low33° (2006)
Thu, 0558° / 44°0.12Climate normal
58 °Climate normal

Iselin, Thursday, 5 November

Climate normal for this date — 60-year average.

Average high58°
Average low44°
Average precipitation0.12 in
Chance of precipitation32%
Record high77° (2022)
Record low33° (1983)
Fri, 0656° / 43°0.08Climate normal
56 °Climate normal

Iselin, Friday, 6 November

Climate normal for this date — 60-year average.

Average high56°
Average low43°
Average precipitation0.08 in
Chance of precipitation28%
Record high80° (2024)
Record low31° (2012)
Sat, 0756° / 42°0.09Climate normal
56 °Climate normal

Iselin, Saturday, 7 November

Climate normal for this date — 60-year average.

Average high56°
Average low42°
Average precipitation0.09 in
Chance of precipitation20%
Record high75° (2022)
Record low29° (1962)
Sun, 0855° / 41°0.14Climate normal
55 °Climate normal

Iselin, Sunday, 8 November

Climate normal for this date — 60-year average.

Average high55°
Average low41°
Average precipitation0.14 in
Chance of precipitation27%
Record high73° (1975)
Record low28° (2019)
Mon, 0956° / 41°0.07Climate normal
56 °Climate normal

Iselin, Monday, 9 November

Climate normal for this date — 60-year average.

Average high56°
Average low41°
Average precipitation0.07 in
Chance of precipitation25%
Record high74° (2020)
Record low23° (2019)
Tue, 1056° / 42°0.16Climate normal
56 °Climate normal

Iselin, Tuesday, 10 November

Climate normal for this date — 60-year average.

Average high56°
Average low42°
Average precipitation0.16 in
Chance of precipitation37%
Record high73° (2020)
Record low25° (2017)

About the monthly outlook

How accurate is a 30-day forecast?

The first 16 days come from weather models — reliable for the first 3–5 days and progressively less so after that. Days 17 through 30 for Iselin, NJ are built from the climate normal, the 60-year average, so they show typical weather for those dates rather than a specific forecast.

What does "above normal" mean?

We compare the forecast against the climate normal for those exact calendar days, computed from 60 years of observations. The deviation shows how much the coming month differs from a typical one.

Where do the 66-year records come from?

They are real temperature extremes recorded in Iselin, NJ since 1960: the highest and lowest reading for each calendar date, with the year it happened.

How often is it updated?

The forecast portion refreshes every hour; the climate portion is based on long-term data and stays stable.