5-day weather forecast for Groton, Connecticut
Today
57°
73°
Mostly Cloudy
Thursday
63°
70°
Rain Showers
Likely
Likely
Friday
58°
69°
Chance Rain
Showers
Showers
Saturday
46°
66°
Mostly Sunny
Sunday
49°
65°
Partly Sunny
Click on a forecast to see the forecast trend for that day
Weather changeability for Groton, Connecticut
| Temperature | Last Month | Last Year |
|---|---|---|
| Average change in high temperature day-to-day | 4.3° | 5.0° |
| Average change in low temperature day-to-day | 5.2° | 6.7° |
| Precipitation | Last Month | Last Year |
|---|---|---|
| Chance of dry day after a precip day | 67% | 61% |
| Chance of precip day after a dry day | 12% | 20% |
Weather forecast accuracy for Groton, Connecticut
| The Weather Channel | 78.45% |
| Intellicast | 78.45% |
| National Weather Service | 71.26% |
| AccuWeather | 70.40% |
| CustomWeather | 70.11% |
| Weather Underground | 69.54% |
| World Weather Online | 66.67% |
| NWS Digital Forecast | 64.94% |
| Persistence | 56.32% |
| Intellicast | 71.89% |
| The Weather Channel | 71.87% |
| AccuWeather | 70.06% |
| National Weather Service | 67.77% |
| CustomWeather | 65.92% |
| NWS Digital Forecast | 63.23% |
| Persistence | 47.52% |
ForecastAdvisor Fact
On average, Intellicast's high temperature forecasts for Groton were off by 2.60 degrees last month.