Weather in Old Tappan, NJ
Old Tappan, Tuesday, 13 October, 17:22
Clear. Feels like 71°. High 71°, low 55°.
Monthly outlook for Old Tappan, NJ: average high 64.7°, average low 51.2°. That is 1.9° above the climate normal for October. Precipitation is expected on 3 days (about 0.8 inches), against a normal of 4 days and 2.0 inches. The warmest day looks like 16 October (76.3°), the coolest 18 October (39°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 13 October – 22 October | 67.2° | 62.4° | +2.7° |
| 23 October – 1 November | 60.5° | 58.7° | +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
Old Tappan, Wednesday, 14 October
Light rain. High 75°, low 61°.
0
Old Tappan, Thursday, 15 October
Mostly clear. High 62°, low 52°.
0.36Old Tappan, Friday, 16 October
Rain. High 76°, low 54°.
0Old Tappan, Saturday, 17 October
Light rain. High 54°, low 41°.
0Old Tappan, Sunday, 18 October
Clear. High 56°, low 39°.
0
Old Tappan, Monday, 19 October
Overcast. High 65°, low 43°.
0Old Tappan, Tuesday, 20 October
Overcast. High 69°, low 56°.
0Old Tappan, Wednesday, 21 October
Clear. High 72°, low 55°.
0Old Tappan, Thursday, 22 October
Overcast. High 71°, low 59°.
0.02Old Tappan, Friday, 23 October
Light rain. High 57°, low 51°.
0.01Old Tappan, Saturday, 24 October
Light rain. High 73°, low 58°.
0
Old Tappan, Sunday, 25 October
Partly cloudy. High 57°, low 48°.
0Old Tappan, Monday, 26 October
Overcast. High 55°, low 41°.
0.05Old Tappan, Tuesday, 27 October
Light rain. High 57°, low 51°.
0.38Old Tappan, Wednesday, 28 October
Rain. High 63°, low 53°.
0.21Old 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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