5-day weather forecast for Groton, Connecticut

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Weather changeability for Groton, Connecticut

Temperature Last Month Last Year
Average change in high temperature day-to-day 6.4° 5.7°
Average change in low temperature day-to-day 11.6° 7.4°
Precipitation Last Month Last Year
Chance of dry day after a precip day 47% 54%
Chance of precip day after a dry day 53% 29%

Weather forecast accuracy for Groton, Connecticut

Last Month
Foreca   84.44%
The Weather Channel   82.50%
Dark Sky (forecast.io)   81.94%
Weather Underground   80.00%
AccuWeather   78.89%
NWS Digital Forecast   78.33%
MeteoGroup   74.44%
World Weather Online   61.67%
Persistence   32.50%
Last Year
Weather Underground   78.80%
The Weather Channel   78.72%
Foreca   76.63%
AccuWeather   75.76%
MeteoGroup   75.28%
Dark Sky (forecast.io)   69.92%
NWS Digital Forecast   67.72%
World Weather Online   60.32%
Persistence   45.77%

ForecastAdvisor Fact

15.6% of Persistence's low temperature forecasts for Groton were within 3 degrees of actual temperatures last month.