Weather in Old Tappan, NJ
Old Tappan, Friday, 16 October, 07:46
Light rain. Feels like 61°. High 79°, low 55°.
Monthly outlook for Old Tappan, NJ: average high 63.9°, average low 49.7°. That is 2.2° above the climate normal for October. Precipitation is expected on 5 days (about 3.1 inches), against a normal of 4 days and 2.1 inches. The warmest day looks like 16 October (79.4°), the coolest 18 October (38.9°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 16 October – 25 October | 63.6° | 61.2° | +1.3° |
| 26 October – 4 November | 64.4° | 58° | +3.5° |
| 5 November – 14 November | at normal | 53.5° | — |
October records over 66 years
Climate normals and records are computed from the nearest reference point — Dumont (5 mi).
0
Old Tappan, Saturday, 17 October
Overcast. High 61°, low 42°.
0
Old Tappan, Sunday, 18 October
Clear. High 56°, low 39°.
0Old Tappan, Monday, 19 October
Overcast. High 58°, low 40°.
0Old Tappan, Tuesday, 20 October
Overcast. High 65°, low 49°.
0Old Tappan, Wednesday, 21 October
Clear. High 62°, low 49°.
0Old Tappan, Thursday, 22 October
Overcast. High 57°, low 46°.
0Old Tappan, Friday, 23 October
Overcast. High 63°, low 47°.
0Old Tappan, Saturday, 24 October
Clear. High 67°, low 49°.
0Old Tappan, Sunday, 25 October
Clear. High 66°, low 49°.
1.68Old Tappan, Monday, 26 October
Heavy rain. High 55°, low 51°.
0.05Old Tappan, Tuesday, 27 October
Light rain. High 66°, low 51°.
0Old Tappan, Wednesday, 28 October
Clear. High 69°, low 55°.
0
Old Tappan, Thursday, 29 October
Partly cloudy. High 68°, low 54°.
0.26Old Tappan, Friday, 30 October
Light rain. High 62°, low 59°.
0.68Old Tappan, Saturday, 31 October
Heavy rain. High 67°, low 61°.
0.1Old Tappan, Sunday, 1 November
Climate normal for this date — 60-year average.
0.09
Old Tappan, Monday, 2 November
Climate normal for this date — 60-year average.
0.09Old Tappan, Tuesday, 3 November
Climate normal for this date — 60-year average.
0.05Old Tappan, Wednesday, 4 November
Climate normal for this date — 60-year average.
0.13Old Tappan, Thursday, 5 November
Climate normal for this date — 60-year average.
0.08Old Tappan, Friday, 6 November
Climate normal for this date — 60-year average.
0.08Old Tappan, Saturday, 7 November
Climate normal for this date — 60-year average.
0.16Old Tappan, Sunday, 8 November
Climate normal for this date — 60-year average.
0.08Old Tappan, Monday, 9 November
Climate normal for this date — 60-year average.
0.15Old Tappan, Tuesday, 10 November
Climate normal for this date — 60-year average.
0.14Old Tappan, Wednesday, 11 November
Climate normal for this date — 60-year average.
0.14Old Tappan, Thursday, 12 November
Climate normal for this date — 60-year average.
0.18Old Tappan, Friday, 13 November
Climate normal for this date — 60-year average.
0.09Old Tappan, Saturday, 14 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 Tappan, NJ 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 Tappan, NJ 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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