Penns Grove Weather in August

What's the weather like in Penns Grove (New Jersey) in August 2025?

The climate in Penns Grove during August can be summarized as hot, humid and a little damp.

August is in the summer in Penns Grove and is typically the 2nd warmest month of the year. Daytime maximum temperatures average around a muggy 29°C (84°F), whilst at night 19°C (66°F) is normal.

Penns Grove weather averages (imperial / metric)
Daytime temperature 29°C 84.1°F
Nightly temperature 18.7°C 65.6°F
Average temperature 23.8°C 74.8°F
Daily sunshine 9.1 hrs
Avg rainfall 99 mm 3.9 ins
Rainy days 9 days
Sea temperature 23.4°C 74.2°F
Humidity 72%
Windspeed 13.3kph 8 mph

On average August is the 3rd wettest month of the year in Penns Grove with around 99mm 3.9 inches of rain making it a a little damp time to visit. This rainfall is typically spread over 9 days, although this may vary considerably.

On the flip side this corresponds to an average of 9.1 hours of sunshine per day.

August temperatures in Penns Grove

Penns Grove average temperature in August

August rainfall

Penns Grove average rain in August

August hourly sunshine

Penns Grove average rain in August

The data used in these monthly averages covers a period of over 100 years right up until last year. As such they are a valid prediction of what to expect for the weather in Penns Grove in August 2025.

Other monthly averages

Best places to visit in August

UV index Best time to go?

Beta

Current (hourly) weather 15 day forecast

Penns Grove weather stats

Penns Grove weather statistics
Hottest month: July 29.6°C 85.3°F
Driest month: February 75mm 3ins
Sunniest month: August 9.1hrs
Coldest month: January 3.4°C 38.1°F
Wettest month: July 110mm 4.3ins
Map showing location of Penns Grove (39.72956, -75.46797) Penns Grove map pin © Google

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