Perth Amboy, NJ Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Perth Amboy, a city in Middlesex County, New Jersey.
Today
84°F
Mostly Sunny
Mostly sunny. High near 84, with temperatures falling to around 82 in the afternoon. Northeast wind 1 to 5 mph.
7-day forecast for Perth Amboy
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 84°F | Mostly Sunny | 1 to 5 mph NE | 0% |
| Tonight | 67°F | Mostly Cloudy | 0 to 5 mph SE | 1% |
| Wednesday | 83°F | Partly Sunny then Chance Showers And Thunderstorms | 0 to 6 mph E | 46% |
| Wednesday Night | 72°F | Slight Chance Showers And Thunderstorms | 5 mph S | 28% |
| Thursday | 90°F | Chance Showers And Thunderstorms | 2 to 8 mph SW | 38% |
| Thursday Night | 74°F | Chance Showers And Thunderstorms | 3 to 7 mph SW | 38% |
| Friday | 91°F | Mostly Sunny then Chance Showers And Thunderstorms | 3 to 7 mph SW | 43% |
| Friday Night | 73°F | Chance Showers And Thunderstorms | 5 mph SW | 43% |
| Saturday | 88°F | Partly Sunny then Chance Showers And Thunderstorms | 3 to 8 mph W | 35% |
| Saturday Night | 72°F | Chance Showers And Thunderstorms | 6 mph W | 35% |
| Sunday | 89°F | Mostly Sunny | 3 to 7 mph W | 13% |
| Sunday Night | 73°F | Mostly Clear | 6 mph W | 13% |
| Monday | 91°F | Sunny | 5 to 9 mph W | 8% |
| Monday Night | 73°F | Partly Cloudy | 5 to 8 mph W | 13% |
Forecast source: National Weather Service (api.weather.gov) for Perth Amboy (40.520, -74.271). Updated through the day.
Growing snapshot for Perth Amboy
Last spring frost
Apr 15
First fall frost
Oct 26
Growing season
193 days
Hardiness zone
7b
More local growing data for Perth Amboy: nearby ZIP 08861 weather · frost dates · planting calendar · New Jersey frost dates
Nearby towns & communities
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Dayton
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Jamesburg
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Metuchen
Middlesex
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New Brunswick
Old Bridge
Climate data from the nearest NOAA station, New Brunswick 3 Se, Nj (8.5 mi from Perth Amboy). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.