Weather in Deep River, CT
Deep River, Thursday, 8 October, 19:43
Clear. Feels like 57°. High 71°, low 54°.
Monthly outlook for Deep River, CT: average high 62.8°, average low 47.6°. That is 0.9° above the climate normal for October. Precipitation is expected on 2 days (about 0.4 inches), against a normal of 4 days and 2.1 inches. The warmest day looks like 8 October (71.3°), the coolest 19 October (33.5°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 8 October – 17 October | 65.6° | 62.3° | +1.8° |
| 18 October – 27 October | 58.2° | 59° | -0.5° |
| 28 October – 6 November | at normal | 56.4° | — |
October records over 66 years
Climate normals and records are computed from the nearest reference point — Old Lyme (9 mi).
0
Deep River, Friday, 9 October
Clear. High 70°, low 50°.
0
Deep River, Saturday, 10 October
Overcast. High 63°, low 46°.
0.22
Deep River, Sunday, 11 October
Rain. High 61°, low 47°.
0.13Deep River, Monday, 12 October
Light rain. High 67°, low 57°.
0.04Deep River, Tuesday, 13 October
Light rain. High 70°, low 52°.
0Deep River, Wednesday, 14 October
Clear. High 60°, low 48°.
0Deep River, Thursday, 15 October
Clear. High 59°, low 43°.
0Deep River, Friday, 16 October
Overcast. High 70°, low 59°.
0
Deep River, Saturday, 17 October
Partly cloudy. High 65°, low 43°.
0Deep River, Sunday, 18 October
Clear. High 47°, low 36°.
0Deep River, Monday, 19 October
Clear. High 52°, low 33°.
0Deep River, Tuesday, 20 October
Clear. High 62°, low 41°.
0Deep River, Wednesday, 21 October
Clear. High 61°, low 47°.
0Deep River, Thursday, 22 October
Overcast. High 63°, low 54°.
0
Deep River, Friday, 23 October
Mostly clear. High 64°, low 51°.
0.13
Deep River, Saturday, 24 October
Climate normal for this date — 60-year average.
0.14Deep River, Sunday, 25 October
Climate normal for this date — 60-year average.
0.15Deep River, Monday, 26 October
Climate normal for this date — 60-year average.
0.15Deep River, Tuesday, 27 October
Climate normal for this date — 60-year average.
0.17Deep River, Wednesday, 28 October
Climate normal for this date — 60-year average.
0.17Deep River, Thursday, 29 October
Climate normal for this date — 60-year average.
0.15Deep River, Friday, 30 October
Climate normal for this date — 60-year average.
0.07Deep River, Saturday, 31 October
Climate normal for this date — 60-year average.
0.12Deep River, Sunday, 1 November
Climate normal for this date — 60-year average.
0.08Deep River, Monday, 2 November
Climate normal for this date — 60-year average.
0.16Deep River, Tuesday, 3 November
Climate normal for this date — 60-year average.
0.04Deep River, Wednesday, 4 November
Climate normal for this date — 60-year average.
0.15Deep River, Thursday, 5 November
Climate normal for this date — 60-year average.
0.11Deep River, Friday, 6 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 Deep River, 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 Deep River, 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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