Weather in Holtsville, NY
Holtsville, Saturday, 31 October, 12:16
Mostly clear. Feels like 52°. High 56°, low 42°.
Monthly outlook for Holtsville, NY: average high 59.1°, average low 49.3°. That is 2.2° above the climate normal for October. Precipitation is expected on 1 day (about 0.4 inches), against a normal of 5 days and 2.0 inches. The warmest day looks like 4 November (69.8°), the coolest 1 November (36.7°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 31 October – 9 November | 62.9° | 56.4° | +3.6° |
| 10 November – 19 November | 52.9° | 52.2° | +0.4° |
| 20 November – 29 November | at normal | 49.8° | — |
October records over 66 years
Climate normals and records are computed from the nearest reference point — Patchogue (4 mi).
0
Holtsville, Sunday, 1 November
Overcast. High 62°, low 37°.
0Holtsville, Monday, 2 November
Overcast. High 65°, low 44°.
0Holtsville, Tuesday, 3 November
Overcast. High 68°, low 49°.
0
Holtsville, Wednesday, 4 November
Clear. High 70°, low 52°.
0.32
Holtsville, Thursday, 5 November
Rain. High 69°, low 60°.
0Holtsville, Friday, 6 November
Overcast. High 65°, low 60°.
0.01Holtsville, Saturday, 7 November
Light rain. High 57°, low 54°.
0Holtsville, Sunday, 8 November
Overcast. High 63°, low 53°.
0Holtsville, Monday, 9 November
Overcast. High 54°, low 52°.
0Holtsville, Tuesday, 10 November
Overcast. High 53°, low 49°.
0Holtsville, Wednesday, 11 November
Overcast. High 55°, low 49°.
0Holtsville, Thursday, 12 November
Overcast. High 54°, low 50°.
0.01Holtsville, Friday, 13 November
Light rain. High 53°, low 48°.
0.02Holtsville, Saturday, 14 November
Light rain. High 52°, low 45°.
0.01Holtsville, Sunday, 15 November
Light rain. High 51°, low 47°.
0.15
Holtsville, Monday, 16 November
Climate normal for this date — 60-year average.
0.14Holtsville, Tuesday, 17 November
Climate normal for this date — 60-year average.
0.08
Holtsville, Wednesday, 18 November
Climate normal for this date — 60-year average.
0.07Holtsville, Thursday, 19 November
Climate normal for this date — 60-year average.
0.12Holtsville, Friday, 20 November
Climate normal for this date — 60-year average.
0.1Holtsville, Saturday, 21 November
Climate normal for this date — 60-year average.
0.16Holtsville, Sunday, 22 November
Climate normal for this date — 60-year average.
0.12Holtsville, Monday, 23 November
Climate normal for this date — 60-year average.
0.1Holtsville, Tuesday, 24 November
Climate normal for this date — 60-year average.
0.14Holtsville, Wednesday, 25 November
Climate normal for this date — 60-year average.
0.21Holtsville, Thursday, 26 November
Climate normal for this date — 60-year average.
0.12Holtsville, Friday, 27 November
Climate normal for this date — 60-year average.
0.16Holtsville, Saturday, 28 November
Climate normal for this date — 60-year average.
0.11Holtsville, Sunday, 29 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 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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