5-day weather forecast for Groton, Connecticut

Weather changeability for Groton, Connecticut

Temperature Last Month Last Year
Average change in high temperature day-to-day 4.0° 5.2°
Average change in low temperature day-to-day 11.2° 6.9°
Precipitation Last Month Last Year
Chance of dry day after a precip day 58% 60%
Chance of precip day after a dry day 32% 21%

Weather forecast accuracy for Groton, Connecticut

Last Month
The Weather Channel   81.99%
Weather Underground   81.72%
AccuWeather   77.96%
Foreca   77.69%
MeteoGroup   75.00%
Dark Sky (forecast.io)   75.00%
NWS Digital Forecast   72.04%
World Weather Online   52.42%
Persistence   46.77%
Last Year
Weather Underground   78.22%
The Weather Channel   77.67%
Foreca   75.92%
AccuWeather   74.61%
MeteoGroup   72.49%
Dark Sky (forecast.io)   69.04%
World Weather Online   67.01%
NWS Digital Forecast   65.52%
Persistence   49.21%

ForecastAdvisor Fact

On average, Persistence's low temperature forecasts for Groton were off by 10.81 degrees last month.