Weather in Old Saybrook, CT
Old Saybrook, Tuesday, 20 October, 18:40
Clear. Feels like 57°. High 67°, low 42°.
Monthly outlook for Old Saybrook, CT: average high 57.9°, average low 43°. That is 0° above the climate normal for October. Precipitation is expected on 2 days (about 1.4 inches), against a normal of 4 days and 2.0 inches. The warmest day looks like 20 October (66.8°), the coolest 24 October (35.1°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 20 October – 29 October | 59.9° | 58.6° | +0.7° |
| 30 October – 8 November | 54.5° | 55.7° | -0.7° |
| 9 November – 18 November | at normal | 51.5° | — |
October records over 66 years
Climate normals and records are computed from the nearest reference point — Old Lyme (4 mi).
0
Old Saybrook, Wednesday, 21 October
Mostly clear. High 61°, low 39°.
0
Old Saybrook, Thursday, 22 October
Clear. High 64°, low 38°.
0Old Saybrook, Friday, 23 October
Clear. High 52°, low 39°.
0Old Saybrook, Saturday, 24 October
Mostly clear. High 56°, low 35°.
0Old Saybrook, Sunday, 25 October
Clear. High 60°, low 38°.
0
Old Saybrook, Monday, 26 October
Partly cloudy. High 60°, low 40°.
0
Old Saybrook, Tuesday, 27 October
Overcast. High 63°, low 54°.
0.03
Old Saybrook, Wednesday, 28 October
Light rain. High 54°, low 49°.
0.43Old Saybrook, Thursday, 29 October
Rain. High 62°, low 47°.
0Old Saybrook, Friday, 30 October
Clear. High 49°, low 39°.
0Old Saybrook, Saturday, 31 October
Clear. High 51°, low 36°.
0Old Saybrook, Sunday, 1 November
Overcast. High 60°, low 50°.
0.92Old Saybrook, Monday, 2 November
Heavy rain. High 62°, low 60°.
0Old Saybrook, Tuesday, 3 November
Clear. High 61°, low 43°.
0Old Saybrook, Wednesday, 4 November
Mostly clear. High 45°, low 37°.
0.15
Old Saybrook, Thursday, 5 November
Climate normal for this date — 60-year average.
0.11Old Saybrook, Friday, 6 November
Climate normal for this date — 60-year average.
0.07Old Saybrook, Saturday, 7 November
Climate normal for this date — 60-year average.
0.13Old Saybrook, Sunday, 8 November
Climate normal for this date — 60-year average.
0.09Old Saybrook, Monday, 9 November
Climate normal for this date — 60-year average.
0.18Old Saybrook, Tuesday, 10 November
Climate normal for this date — 60-year average.
0.16Old Saybrook, Wednesday, 11 November
Climate normal for this date — 60-year average.
0.16Old Saybrook, Thursday, 12 November
Climate normal for this date — 60-year average.
0.21Old Saybrook, Friday, 13 November
Climate normal for this date — 60-year average.
0.09Old Saybrook, Saturday, 14 November
Climate normal for this date — 60-year average.
0.13Old Saybrook, Sunday, 15 November
Climate normal for this date — 60-year average.
0.15Old Saybrook, Monday, 16 November
Climate normal for this date — 60-year average.
0.15Old Saybrook, Tuesday, 17 November
Climate normal for this date — 60-year average.
0.08Old Saybrook, Wednesday, 18 November
Climate normal for this date — 60-year average.
About the monthly outlook
How accurate is a 30-day forecast?
The first 16 days come from weather models — reliable for the first 3–5 days and progressively less so after that. Days 17 through 30 for Old Saybrook, CT are built from the climate normal, the 60-year average, so they show typical weather for those dates rather than a specific forecast.
What does "above normal" mean?
We compare the forecast against the climate normal for those exact calendar days, computed from 60 years of observations. The deviation shows how much the coming month differs from a typical one.
Where do the 66-year records come from?
They are real temperature extremes recorded in Old Saybrook, CT since 1960: the highest and lowest reading for each calendar date, with the year it happened.
How often is it updated?
The forecast portion refreshes every hour; the climate portion is based on long-term data and stays stable.
Sun and moon today
Weather history
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