National Weather Service Forecast for: Grenloch NJ
Issued by: National Weather Service Philadelphia, PA
Updated: 4:28 pm EDT Jul 28, 2026
 
This
Afternoon
This Afternoon: A chance of showers and thunderstorms. Some of the storms could be severe and produce heavy rainfall. Mostly cloudy, with a high near 83. South wind around 10 mph. Chance of precipitation is 50%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Severe
T-Storms

 Tonight

Tonight: Showers and thunderstorms before 11pm, then showers likely and possibly a thunderstorm between 11pm and 1am, then a chance of showers and thunderstorms after 1am. Some of the storms could be severe and produce heavy rainfall. Low around 66. Southeast wind around 5 mph becoming calm after midnight. Chance of precipitation is 90%. New rainfall amounts between a half and three quarters of an inch possible.
Severe
T-Storms
then Showers
Likely
 Wednesday

Wednesday: A slight chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 81. Northwest wind 5 to 10 mph. Chance of precipitation is 20%.
Mostly Sunny
then Slight
Chance
T-storms
 Wednesday
Night
Wednesday Night: A slight chance of showers and thunderstorms, mainly between 8pm and 9pm. Partly cloudy, with a low around 64. Northwest wind around 5 mph. Chance of precipitation is 20%.
Slight Chance
T-storms then
Partly Cloudy
 Thursday

Thursday: A chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 81. North wind 5 to 10 mph. Chance of precipitation is 40%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Mostly Sunny
then Chance
Showers
 Thursday
Night
Thursday Night: A chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 64. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Chance
Showers then
Partly Cloudy
 Friday

Friday: Mostly sunny, with a high near 85.
Mostly Sunny

 Friday
Night
Friday Night: Partly cloudy, with a low around 66.
Partly Cloudy

 Saturday

Saturday: Mostly sunny, with a high near 86.
Mostly Sunny
Hi 83 °F Lo 66 °F Hi 81 °F Lo 64 °F Hi 81 °F Lo 64 °F Hi 85 °F Lo 66 °F Hi 86 °F

Flood Watch
Tornado Watch
 

This Afternoon
 
 A chance of showers and thunderstorms. Some of the storms could be severe and produce heavy rainfall. Mostly cloudy, with a high near 83. South wind around 10 mph. Chance of precipitation is 50%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Tonight
 
 Showers and thunderstorms before 11pm, then showers likely and possibly a thunderstorm between 11pm and 1am, then a chance of showers and thunderstorms after 1am. Some of the storms could be severe and produce heavy rainfall. Low around 66. Southeast wind around 5 mph becoming calm after midnight. Chance of precipitation is 90%. New rainfall amounts between a half and three quarters of an inch possible.
Wednesday
 
 A slight chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 81. Northwest wind 5 to 10 mph. Chance of precipitation is 20%.
Wednesday Night
 
 A slight chance of showers and thunderstorms, mainly between 8pm and 9pm. Partly cloudy, with a low around 64. Northwest wind around 5 mph. Chance of precipitation is 20%.
Thursday
 
 A chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 81. North wind 5 to 10 mph. Chance of precipitation is 40%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Thursday Night
 
 A chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 64. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Friday
 
 Mostly sunny, with a high near 85.
Friday Night
 
 Partly cloudy, with a low around 66.
Saturday
 
 Mostly sunny, with a high near 86.
Saturday Night
 
 Mostly cloudy, with a low around 67.
Sunday
 
 A chance of showers. Partly sunny, with a high near 84. Chance of precipitation is 30%.
Sunday Night
 
 A chance of showers. Mostly cloudy, with a low around 69. Chance of precipitation is 40%.
Monday
 
 A chance of showers. Mostly cloudy, with a high near 85. Chance of precipitation is 50%.
Monday Night
 
 A chance of showers. Mostly cloudy, with a low around 68. Chance of precipitation is 40%.
Tuesday
 
 A chance of showers. Mostly sunny, with a high near 86.

 

Forecast from NOAA-NWS for Grenloch NJ.