Skip to main content
Every US forecast, compared
checkweather.io
CheckWeather USOld Saybrook

Old Saybrook weather

Loading live data…

The weather map: all three models at once

NWS, American, European side by side around Old Saybrook and nearby towns.Live rain radar →
Loading the three model maps…

Next 14 hours

consensus of the three models

14-day forecast

where the models agree, and where they split

Old Saybrook, CT is at its warmest in Jul (average highs near 81°F) and coldest in Feb (lows around 28°F), with roughly 56 in of precipitation across the year. Below, compare what NWS, American, European forecast for Old Saybrook right now, and see exactly where they disagree.

We grade every model against the weather that actually happened, so you can see which forecast model is most accurate in United States before you trust any single number.

Old Saybrook climate by month

average daytime high and overnight low across a typical year
Jan
42°
30°
Feb
43°
28°
Mar
49°
34°
Apr
57°
42°
May
66°
51°
Jun
75°
60°
Jul
81°
68°
Aug
78°
65°
Sep
74°
59°
Oct
66°
50°
Nov
54°
39°
Dec
45°
32°

Which forecast is most accurate in the US?

CheckWeather Score — graded against the weather that actually happened
ProviderCheckWeather Score🌡 Temp💨 Wind🌧 RainRun by
European logo
European ★ Best
89
/100rank #1
87±1.3°F96±1.2 mph8592% hitECMWF - European Centre for Medium-Range Weather ForecastsReading, United Kingdom
American logo
American
73
/100rank #2
81±1.9°F93±2.2 mph4972% hitNOAA / NCEP (United States)College Park, Maryland, USA

The CheckWeather Score blends temperature, wind and rain accuracy — each measured against ERA5 (the recorded weather) over the last 30 days across 1999 cities. Lower error means a higher score. See which forecast model is most accurate in United States, how we measure forecast accuracy, or which model each weather app uses.

Common questions

What's the weather in Old Saybrook today?
On this page we show what NWS, American, European each forecast for Old Saybrook today, side by side and updated live. When all three agree the forecast is reliable; when they split, we flag it so you know the day is genuinely less certain.
Will it rain in Old Saybrook today or tomorrow?
Check the hourly strip and 7-day forecast above. We compare rain from NWS, American, European for Old Saybrook and flag the days where the models disagree on whether showers actually arrive, which is exactly when a single app can catch you out.
Which forecast is most accurate for Old Saybrook?
No single model is always right. NWS, American, European each run their own physics, so we line all three up: when they agree the Old Saybrook forecast is reliable, and when they split you should expect surprises. See our tested US accuracy scoreboard for how the models compare.
What is the warmest month in Old Saybrook?
July is typically the warmest month in Old Saybrook, with average highs around 81°F.
How cold does Old Saybrook get?
The coldest month in Old Saybrook is February, when overnight lows average about 28°F.
How much rain does Old Saybrook get?
Old Saybrook sees roughly 56 in of precipitation a year, with December usually the wettest month.

Nearby

More US weather