Dayton, NJ Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Dayton, a community in Middlesex County, New Jersey.
This Afternoon
73°F
Mostly Sunny
Mostly sunny, with a high near 73. East wind around 5 mph.
7-day forecast for Dayton
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 73°F | Mostly Sunny | 5 mph E | 1% |
| Tonight | 57°F | Mostly Cloudy | 0 to 5 mph E | 4% |
| Sunday | 74°F | Rain Showers | 5 mph S | 80% |
| Sunday Night | 56°F | Slight Chance Showers And Thunderstorms then Showers And Thunderstorms Likely | 0 to 5 mph W | 70% |
| Monday | 68°F | Chance Rain Showers | 5 to 10 mph NE | 41% |
| Monday Night | 51°F | Chance Rain Showers | 5 to 10 mph NE | 28% |
| Tuesday | 63°F | Chance Rain Showers | 10 mph NE | 34% |
| Tuesday Night | 50°F | Chance Rain Showers | 10 mph NE | 32% |
| Wednesday | 64°F | Chance Rain Showers | 10 to 15 mph NE | 26% |
| Wednesday Night | 50°F | Chance Rain Showers | 10 to 15 mph NE | 34% |
| Thursday | 62°F | Chance Rain Showers | 10 to 15 mph NE | 34% |
| Thursday Night | 49°F | Chance Rain Showers | 5 to 10 mph N | 34% |
| Friday | 65°F | Chance Rain Showers | 5 to 10 mph N | 33% |
| Friday Night | 49°F | Chance Rain Showers | 5 to 10 mph N | 30% |
Forecast source: National Weather Service (api.weather.gov) for Dayton (40.378, -74.508). Updated through the day.
Growing snapshot for Dayton
Last spring frost
Apr 25
First fall frost
Oct 16
Growing season
173 days
Hardiness zone
7a
More local growing data for Dayton: nearby ZIP 08810 weather · frost dates · planting calendar · New Jersey frost dates
Nearby towns & communities
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Middlesex
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Climate data from the nearest NOAA station, Hightstown 2 W, Nj (8 mi from Dayton). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.