Weather in Holtsville, NY
Holtsville, Thursday, 12 November, 18:27
Overcast. Feels like 44°. High 54°, low 45°.
Monthly outlook for Holtsville, NY: average high 54.4°, average low 45.1°. That is 2° above the climate normal for November. Precipitation is expected on 4 days (about 1.9 inches), against a normal of 5 days and 2.1 inches. The warmest day looks like 25 November (61.6°), the coolest 14 November (31.5°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 12 November – 21 November | 52° | 51.4° | +0.4° |
| 22 November – 1 December | 58.3° | 49.3° | +5° |
| 2 December – 11 December | at normal | 45.6° | — |
November records over 66 years
Climate normals and records are computed from the nearest reference point — Patchogue (4 mi).
0.43
Holtsville, Friday, 13 November
Rain. High 46°, low 37°.
0Holtsville, Saturday, 14 November
Overcast. High 45°, low 31°.
0Holtsville, Sunday, 15 November
Overcast. High 47°, low 40°.
0Holtsville, Monday, 16 November
Overcast. High 47°, low 38°.
0
Holtsville, Tuesday, 17 November
Clear. High 51°, low 38°.
0Holtsville, Wednesday, 18 November
Clear. High 55°, low 42°.
0
Holtsville, Thursday, 19 November
Mostly clear. High 58°, low 48°.
0Holtsville, Friday, 20 November
Clear. High 61°, low 51°.
0Holtsville, Saturday, 21 November
Clear. High 55°, low 50°.
0
Holtsville, Sunday, 22 November
Partly cloudy. High 60°, low 53°.
0Holtsville, Monday, 23 November
Overcast. High 54°, low 48°.
0.01Holtsville, Tuesday, 24 November
Light rain. High 61°, low 51°.
0.28Holtsville, Wednesday, 25 November
Rain. High 62°, low 55°.
0.03Holtsville, Thursday, 26 November
Light rain. High 56°, low 50°.
0.83Holtsville, Friday, 27 November
Rain. High 57°, low 46°.
0.16
Holtsville, Saturday, 28 November
Climate normal for this date — 60-year average.
0.11Holtsville, Sunday, 29 November
Climate normal for this date — 60-year average.
0.14Holtsville, Monday, 30 November
Climate normal for this date — 60-year average.
0.14Holtsville, Tuesday, 1 December
Climate normal for this date — 60-year average.
0.14Holtsville, Wednesday, 2 December
Climate normal for this date — 60-year average.
0.15Holtsville, Thursday, 3 December
Climate normal for this date — 60-year average.
0.11Holtsville, Friday, 4 December
Climate normal for this date — 60-year average.
0.19Holtsville, Saturday, 5 December
Climate normal for this date — 60-year average.
0.18Holtsville, Sunday, 6 December
Climate normal for this date — 60-year average.
0.15Holtsville, Monday, 7 December
Climate normal for this date — 60-year average.
0.12Holtsville, Tuesday, 8 December
Climate normal for this date — 60-year average.
0.24Holtsville, Wednesday, 9 December
Climate normal for this date — 60-year average.
0.15Holtsville, Thursday, 10 December
Climate normal for this date — 60-year average.
0.27Holtsville, Friday, 11 December
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 Holtsville, NY 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 Holtsville, NY 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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