Sweetwater, NJ Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Sweetwater, a community in Atlantic County, New Jersey.
Today
85°F
Mostly Sunny
Mostly sunny, with a high near 85. East wind 0 to 5 mph.
7-day forecast for Sweetwater
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 85°F | Mostly Sunny | 0 to 5 mph E | 0% |
| Tonight | 66°F | Mostly Cloudy | 0 to 5 mph NE | 10% |
| Wednesday | 85°F | Chance Rain Showers then Chance Showers And Thunderstorms | 0 to 5 mph SE | 55% |
| Wednesday Night | 73°F | Chance Showers And Thunderstorms then Partly Cloudy | 0 to 5 mph S | 45% |
| Thursday | 90°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 5 to 10 mph SW | 20% |
| Thursday Night | 74°F | Slight Chance Showers And Thunderstorms | 5 mph SW | 20% |
| Friday | 91°F | Sunny then Chance Showers And Thunderstorms | 5 mph SW | 31% |
| Friday Night | 72°F | Chance Showers And Thunderstorms | 0 to 5 mph SW | 41% |
| Saturday | 89°F | Mostly Sunny then Chance Showers And Thunderstorms | 0 to 5 mph SW | 35% |
| Saturday Night | 71°F | Chance Showers And Thunderstorms | 0 to 5 mph SW | 35% |
| Sunday | 89°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 0 to 5 mph W | 20% |
| Sunday Night | 72°F | Slight Chance Showers And Thunderstorms then Partly Cloudy | 0 to 5 mph SW | 20% |
| Monday | 91°F | Sunny | 0 to 5 mph SW | 6% |
| Monday Night | 72°F | Partly Cloudy | 0 to 5 mph W | 11% |
Forecast source: National Weather Service (api.weather.gov) for Sweetwater (39.613, -74.651). Updated through the day.
Growing snapshot for Sweetwater
Last spring frost
Apr 18
First fall frost
Oct 29
Growing season
190 days
Hardiness zone
7a
More local growing data for Sweetwater: nearby ZIP 08215 weather · frost dates · planting calendar · New Jersey frost dates
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Climate data from the nearest NOAA station, Atlantic City Intl Ap, Nj (9.8 mi from Sweetwater). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.