Weather in Old Saybrook, CT
Old Saybrook, Sunday, 18 October, 12:05
Clear. Feels like 49°. High 53°, low 34°.
Monthly outlook for Old Saybrook, CT: average high 58.9°, average low 47.2°. That is 0.4° above the climate normal for October. Precipitation is expected on 3 days (about 1.4 inches), against a normal of 4 days and 2.1 inches. The warmest day looks like 30 October (65.8°), the coolest 18 October (33.6°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 18 October – 27 October | 57.3° | 59° | -0.9° |
| 28 October – 6 November | 61.5° | 56.4° | +2.8° |
| 7 November – 16 November | at normal | 52.2° | — |
October records over 66 years
Climate normals and records are computed from the nearest reference point — Old Lyme (4 mi).
0
Old Saybrook, Monday, 19 October
Overcast. High 57°, low 42°.
0Old Saybrook, Tuesday, 20 October
Overcast. High 63°, low 47°.
0
Old Saybrook, Wednesday, 21 October
Mostly clear. High 58°, low 44°.
0Old Saybrook, Thursday, 22 October
Clear. High 63°, low 41°.
0Old Saybrook, Friday, 23 October
Clear. High 52°, low 41°.
0Old Saybrook, Saturday, 24 October
Clear. High 51°, low 38°.
0Old Saybrook, Sunday, 25 October
Overcast. High 58°, low 48°.
0
Old Saybrook, Monday, 26 October
Partly cloudy. High 61°, low 50°.
0Old Saybrook, Tuesday, 27 October
Overcast. High 59°, low 46°.
0Old Saybrook, Wednesday, 28 October
Overcast. High 55°, low 42°.
0.26
Old Saybrook, Thursday, 29 October
Rain. High 62°, low 55°.
1.05Old Saybrook, Friday, 30 October
Heavy rain. High 66°, low 61°.
0Old Saybrook, Saturday, 31 October
Partly cloudy. High 63°, low 59°.
0.07Old Saybrook, Sunday, 1 November
Light rain. High 64°, low 58°.
0Old Saybrook, Monday, 2 November
Overcast. High 59°, low 50°.
0.16Old Saybrook, Tuesday, 3 November
Climate normal for this date — 60-year average.
0.04Old Saybrook, Wednesday, 4 November
Climate normal for this date — 60-year average.
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.
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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