Sayreville, NJ Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Sayreville, a borough in Middlesex County, New Jersey.
Today
84°F
Mostly Sunny
Mostly sunny, with a high near 84. East wind 0 to 5 mph.
7-day forecast for Sayreville
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 84°F | Mostly Sunny | 0 to 5 mph E | 0% |
| Tonight | 65°F | Mostly Cloudy | 0 to 5 mph E | 1% |
| Wednesday | 84°F | Partly Sunny then Chance Showers And Thunderstorms | 0 to 5 mph E | 49% |
| Wednesday Night | 71°F | Chance Showers And Thunderstorms then Slight Chance Showers And Thunderstorms | 0 to 5 mph S | 35% |
| Thursday | 90°F | Slight Chance Rain Showers then Chance Showers And Thunderstorms | 0 to 5 mph SW | 37% |
| Thursday Night | 73°F | Chance Showers And Thunderstorms | 5 mph SW | 37% |
| Friday | 91°F | Mostly Sunny then Chance Showers And Thunderstorms | 5 mph SW | 43% |
| Friday Night | 72°F | Chance Showers And Thunderstorms | 0 to 5 mph SW | 43% |
| Saturday | 89°F | Partly Sunny then Chance Showers And Thunderstorms | 0 to 5 mph W | 36% |
| Saturday Night | 71°F | Chance Showers And Thunderstorms | 0 to 5 mph W | 36% |
| Sunday | 89°F | Mostly Sunny | 0 to 5 mph W | 14% |
| Sunday Night | 72°F | Mostly Clear | 0 to 5 mph SW | 14% |
| Monday | 91°F | Mostly Sunny | 5 to 10 mph W | 8% |
| Monday Night | 72°F | Partly Cloudy | 5 to 10 mph W | 12% |
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
Nearby towns & communities
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Clearbrook
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Dayton
Deans
East Franklin
Encore at Monroe
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Highland Park
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Jamesburg
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Metuchen
Middlesex
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Monmouth Junction
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 Aug 4, 2026.