Weather WorldSouth Mountain Reservation, NJ Weather Forecast
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South Mountain Reservation Weather Forecast
| THIS AFTERNOON | TONIGHT | MONDAY | MONDAY NIGHT | TUESDAY | TUESDAY NIGHT | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY | FRIDAY NIGHT |
 |  |  | |  |  | |  | | | | |
| Showers | Chance of T-Storm | Chance of T-Storm | Chance of T-Storm | Sunny | Mostly Clear | Sunny | Partly Cloudy | Chance of T-Storm | Chance of T-Storm | Mostly Sunny | Partly Cloudy |
| Hi: 81°FHi: 27°C | Lo: 69°FLo: 21°C | Hi: 85°FHi: 29°C | Lo: 69°FLo: 21°C | Hi: 85°FHi: 29°C | Lo: 65°FLo: 18°C | Hi: 89°FHi: 32°C | Lo: 69°FLo: 21°C | Hi: 80°FHi: 27°C | Lo: 61°FLo: 16°C | Hi: 81°FHi: 27°C | Lo: 61°FLo: 16°C |
| POP: 60% | POP: 90% | POP: 70% | POP: 40% | POP: 40% | POP: 40% |
POP = Probability of Precipitation.
Weather Outlook Updated: 222 PM EDT Sun Aug 16 2026 
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South Mountain Reservation Forecast Discussion
Issued: 1051 PM EDT Sun Aug 16 2026
Key Messages
1) Showers with potential thunderstorms late this evening into a portion of Monday morning may produce locally heavy downpours. Minor urban and poor drainage flooding is the main concern, but cannot completely rule out a localized flash flood risk close to the coast.
2) Dry with near normal temperatures Tuesday and Wednesday before the next chance of showers or thunderstorms Wednesday night into Thursday.
3) There is a high rip current risk on Monday for t...