Middlesex, NJ Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Middlesex, a borough in Middlesex County, New Jersey.
Overnight
63°F
Partly Cloudy
Partly cloudy, with a low around 63. Northeast wind around 0 mph.
7-day forecast for Middlesex
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 63°F | Partly Cloudy | 0 mph | 0% |
| Tuesday | 85°F | Mostly Sunny | 0 mph | 0% |
| Tuesday Night | 65°F | Mostly Cloudy | 0 mph | 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 | 0 mph | 46% |
| Thursday | 90°F | Slight Chance Rain Showers then Chance Showers And Thunderstorms | 0 to 5 mph SW | 38% |
| Thursday Night | 72°F | Chance Showers And Thunderstorms | 0 to 5 mph SW | 42% |
| Friday | 90°F | Mostly Sunny then Chance Showers And Thunderstorms | 0 to 5 mph SW | 45% |
| Friday Night | 71°F | Chance Showers And Thunderstorms | 0 to 5 mph SW | 45% |
| Saturday | 88°F | Partly Sunny then Chance Showers And Thunderstorms | 0 to 5 mph W | 38% |
| Saturday Night | 70°F | Chance Showers And Thunderstorms | 0 to 5 mph W | 38% |
| Sunday | 89°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 0 to 5 mph W | 15% |
| Sunday Night | 71°F | Slight Chance Showers And Thunderstorms then Mostly Clear | 0 to 5 mph W | 15% |
| Monday | 90°F | Mostly Sunny | 0 to 10 mph W | 10% |
Forecast source: National Weather Service (api.weather.gov) for Middlesex (40.575, -74.498). Updated through the day.
Growing snapshot for Middlesex
Last spring frost
Apr 11
First fall frost
Oct 28
Growing season
198 days
Hardiness zone
7a
More local growing data for Middlesex: nearby ZIP 08846 weather · frost dates · planting calendar · New Jersey frost dates
Nearby towns & communities
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Brownville
Carteret
Clearbrook
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Dayton
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Encore at Monroe
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Heathcote
Helmetta
Highland Park
Hopelawn
Iselin
Jamesburg
Keasbey
Kendall Park
Madison Park
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Menlo Park Terrace
Metuchen
Milltown
Monmouth Junction
New Brunswick
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Perth Amboy
Climate data from the nearest NOAA station, Plainfield, Nj (5.4 mi from Middlesex). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.