Weather in Brookhaven, NY
Brookhaven, Thursday, 8 October, 12:32
Clear. Feels like 70°. High 71°, low 55°.
Monthly outlook for Brookhaven, NY: average high 65.1°, average low 53.7°. That is 1.9° above the climate normal for October. Precipitation is expected on 4 days (about 0.6 inches), against a normal of 4 days and 2.1 inches. The warmest day looks like 13 October (75.5°), the coolest 18 October (44.2°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 8 October – 17 October | 66.3° | 62.8° | +2° |
| 18 October – 27 October | 63.1° | 59.6° | +1.9° |
| 28 October – 6 November | at normal | 56.9° | — |
October records over 66 years
0Brookhaven, Friday, 9 October
Clear. High 71°, low 50°.
0
Brookhaven, Saturday, 10 October
Overcast. High 67°, low 52°.
0.13
Brookhaven, Sunday, 11 October
Light rain. High 66°, low 54°.
0.17Brookhaven, Monday, 12 October
Light rain. High 65°, low 59°.
0.01Brookhaven, Tuesday, 13 October
Light rain. High 75°, low 58°.
0Brookhaven, Wednesday, 14 October
Clear. High 61°, low 50°.
0
Brookhaven, Thursday, 15 October
Partly cloudy. High 59°, low 51°.
0.01Brookhaven, Friday, 16 October
Light rain. High 64°, low 56°.
0.02Brookhaven, Saturday, 17 October
Light rain. High 64°, low 47°.
0Brookhaven, Sunday, 18 October
Clear. High 57°, low 44°.
0Brookhaven, Monday, 19 October
Overcast. High 61°, low 53°.
0Brookhaven, Tuesday, 20 October
Overcast. High 62°, low 57°.
0.2Brookhaven, Wednesday, 21 October
Light rain. High 64°, low 58°.
0.01Brookhaven, Thursday, 22 October
Light rain. High 67°, low 58°.
0.06Brookhaven, Friday, 23 October
Light rain. High 67°, low 58°.
0.15
Brookhaven, Saturday, 24 October
Climate normal for this date — 60-year average.
0.16Brookhaven, Sunday, 25 October
Climate normal for this date — 60-year average.
0.16Brookhaven, Monday, 26 October
Climate normal for this date — 60-year average.
0.16Brookhaven, Tuesday, 27 October
Climate normal for this date — 60-year average.
0.17Brookhaven, Wednesday, 28 October
Climate normal for this date — 60-year average.
0.19Brookhaven, Thursday, 29 October
Climate normal for this date — 60-year average.
0.11Brookhaven, Friday, 30 October
Climate normal for this date — 60-year average.
0.06Brookhaven, Saturday, 31 October
Climate normal for this date — 60-year average.
0.14Brookhaven, Sunday, 1 November
Climate normal for this date — 60-year average.
0.08Brookhaven, Monday, 2 November
Climate normal for this date — 60-year average.
0.12Brookhaven, Tuesday, 3 November
Climate normal for this date — 60-year average.
0.05Brookhaven, Wednesday, 4 November
Climate normal for this date — 60-year average.
0.15Brookhaven, Thursday, 5 November
Climate normal for this date — 60-year average.
0.11Brookhaven, Friday, 6 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 Brookhaven, 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 Brookhaven, 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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