Weather in Old Tappan, NJ
Old Tappan, Tuesday, 13 October, 04:41
Clear. Feels like 55°. High 72°, low 55°.
Monthly outlook for Old Tappan, NJ: average high 65.2°, average low 51.3°. That is 2.1° above the climate normal for October. Precipitation is expected on 1 day (about 0.7 inches), against a normal of 4 days and 2.0 inches. The warmest day looks like 24 October (77.3°), the coolest 18 October (38.6°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 13 October – 22 October | 65.7° | 62.4° | +1.8° |
| 23 October – 1 November | 64.3° | 58.7° | +3.1° |
| 2 November – 11 November | at normal | 55.6° | — |
October records over 66 years
Climate normals and records are computed from the nearest reference point — Dumont (5 mi).
0.01
Old Tappan, Wednesday, 14 October
Light rain. High 74°, low 62°.
0
Old Tappan, Thursday, 15 October
Mostly clear. High 62°, low 54°.
0.7Old Tappan, Friday, 16 October
Heavy rain. High 74°, low 54°.
0Old Tappan, Saturday, 17 October
Mostly clear. High 51°, low 40°.
0
Old Tappan, Sunday, 18 October
Clear. High 58°, low 39°.
0
Old Tappan, Monday, 19 October
Overcast. High 62°, low 46°.
0Old Tappan, Tuesday, 20 October
Overcast. High 68°, low 54°.
0Old Tappan, Wednesday, 21 October
Clear. High 71°, low 54°.
0Old Tappan, Thursday, 22 October
Mostly clear. High 65°, low 56°.
0Old Tappan, Friday, 23 October
Overcast. High 72°, low 58°.
0Old Tappan, Saturday, 24 October
Overcast. High 77°, low 61°.
0Old Tappan, Sunday, 25 October
Overcast. High 66°, low 53°.
0Old Tappan, Monday, 26 October
Overcast. High 56°, low 48°.
0Old Tappan, Tuesday, 27 October
Clear. High 54°, low 44°.
0Old Tappan, Wednesday, 28 October
Clear. High 60°, low 44°.
0.21
Old Tappan, Thursday, 29 October
Climate normal for this date — 60-year average.
0.09Old Tappan, Friday, 30 October
Climate normal for this date — 60-year average.
0.06Old Tappan, Saturday, 31 October
Climate normal for this date — 60-year average.
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.
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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