Old Saybrook weather
Loading live data…Latest for Old Saybrook: NWS (National Blend (NBM)): 72° Clear · American (NOAA GFS): 69° Clear · European (ECMWF): 68° Clear.
The weather map: all three models at once
NWS, American, European side by side around Old Saybrook and nearby towns.Live rain radar →Next 14 hours
consensus of the three models7-day forecast
where the models agree, and where they splitOld Saybrook is a small town of about 11,000 people in CT, sitting at 41.3°N in a temperate climate zone. NWS, American, European each forecast Old Saybrook with their own physics, so we line all three up and flag where they disagree. Nearby towns include Killingworth, Madison, East Haddam.
Which forecast is most accurate in the US?
CheckWeather Score — graded against the weather that actually happened
The CheckWeather Score blends temperature, wind and rain accuracy — each measured against ERA5 (the recorded weather) over the last 30 days across 40 cities. Lower error means a higher score. The apps you know (AccuWeather, Apple Weather, The Weather Channel) are built on these models.
Common questions
What's the weather in Old Saybrook today?
Will it rain in Old Saybrook today or tomorrow?
Which forecast is most accurate for Old Saybrook?
The forecasts Americans check
The two biggest apps keep their model a secret, so we can't show their numbers, only link you to them. The National Weather Service is public, so its data sits right in the comparison above.