Sayreville, NJ Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Sayreville, a borough in Middlesex County, New Jersey.
This Afternoon
72°F
Mostly Sunny
Mostly sunny, with a high near 72. East wind around 5 mph.
7-day forecast for Sayreville
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 72°F | Mostly Sunny | 5 mph E | 1% |
| Tonight | 58°F | Mostly Cloudy | 0 to 5 mph SE | 4% |
| Sunday | 74°F | Rain Showers | 5 to 10 mph SE | 81% |
| Sunday Night | 57°F | Showers And Thunderstorms Likely | 5 to 10 mph W | 74% |
| Monday | 69°F | Chance Rain Showers | 5 to 10 mph NE | 41% |
| Monday Night | 53°F | Chance Rain Showers | 5 to 10 mph NE | 27% |
| Tuesday | 64°F | Chance Rain Showers | 10 mph NE | 32% |
| Tuesday Night | 52°F | Chance Rain Showers | 10 to 15 mph NE | 30% |
| Wednesday | 64°F | Chance Rain Showers | 15 mph NE | 26% |
| Wednesday Night | 52°F | Chance Rain Showers | 10 to 15 mph NE | 34% |
| Thursday | 64°F | Chance Rain Showers | 15 mph NE | 34% |
| Thursday Night | 51°F | Chance Rain Showers | 10 to 15 mph NE | 35% |
| Friday | 66°F | Chance Rain Showers | 10 mph N | 34% |
| Friday Night | 51°F | Chance Rain Showers | 5 to 10 mph N | 31% |
Forecast source: National Weather Service (api.weather.gov) for Sayreville (40.467, -74.320). Updated through the day.
Growing snapshot for Sayreville
Last spring frost
Apr 15
First fall frost
Oct 26
Growing season
193 days
Hardiness zone
7a
More local growing data for Sayreville: nearby ZIP 08859 weather · frost dates · planting calendar · New Jersey frost dates
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Middlesex
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New Brunswick
Old Bridge
Climate data from the nearest NOAA station, New Brunswick 3 Se, Nj (6.3 mi from Sayreville). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.