Sewaren, NJ Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Sewaren, a community in Middlesex County, New Jersey.
This Afternoon
84°F
Mostly Sunny
Mostly sunny. High near 84, with temperatures falling to around 82 in the afternoon. East wind around 5 mph.
7-day forecast for Sewaren
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 84°F | Mostly Sunny | 5 mph E | 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 | 26% |
| 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 W | 43% |
| Saturday | 89°F | Partly Sunny then Chance Showers And Thunderstorms | 3 to 8 mph W | 36% |
| Saturday Night | 72°F | Chance Showers And Thunderstorms | 6 mph W | 36% |
| Sunday | 89°F | Mostly Sunny | 3 to 7 mph W | 13% |
| Sunday Night | 73°F | Mostly Clear | 6 mph W | 13% |
| Monday | 92°F | Sunny | 3 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 Sewaren (40.549, -74.255). Updated through the day.
Growing snapshot for Sewaren
Last spring frost
Apr 11
First fall frost
Oct 28
Growing season
198 days
Hardiness zone
7b
More local growing data for Sewaren: nearby ZIP 07077 weather · frost dates · planting calendar · New Jersey frost dates
Nearby towns & communities
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Middlesex
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New Brunswick
Old Bridge
Climate data from the nearest NOAA station, Plainfield, Nj (8.6 mi from Sewaren). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.