Mostly Sunny

Today

Mostly Sunny

66°

/ --

Port Jefferson, New York

5 Day Forecast

Weather Forecast Accuracy Last Month (September)

Microsoft

89.55%

The Weather Channel

84.72%

AerisWeather

83.68%

Foreca

82.99%

Weatherbit

76.74%

NWS Digital Forecast

74.77%

Pirate Weather

74.31%

Open-Meteo

71.18%

OpenWeather

64.24%

World Weather Online

63.89%

Wetter.com

63.19%

Persistence

57.64%

Where is AccuWeather?

Weather Forecast Accuracy Last Year (2024)

Microsoft

82.30%

The Weather Channel

81.48%

Foreca

80.01%

AerisWeather

79.05%

Weatherbit

78.00%

NWS Digital Forecast

72.01%

Open-Meteo

71.98%

Pirate Weather

70.53%

Wetter.com

64.28%

World Weather Online

60.74%

OpenWeather

60.02%

Persistence

46.37%

ForecastAdvisor Fact

9.7% of World Weather Online's high temperature forecasts for Port Jefferson were off by more than 10 degrees last year.

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Data provided by ForecastWatch.com.


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