Weather in Old Westbury, NY
Old Westbury, Sunday, 9 August, 14:16
Mostly clear. Feels like 97°. High 89°, low 72°.
Monthly outlook for Old Westbury, NY: average high 84.3°, average low 70.5°. That is 2.7° above the climate normal for August. Precipitation is expected on 1 day (about 0.2 inches), against a normal of 5 days and 2.3 inches. The warmest day looks like 11 August (91.8°), the coolest 18 August (64.9°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 9 August – 18 August | 84° | 80.2° | +2.1° |
| 19 August – 28 August | 84.7° | 78.6° | +3.4° |
| 29 August – 7 September | at normal | 77.2° | — |
August records over 66 years
Climate normals and records are computed from the nearest reference point — Westbury (2 mi).
0.02
Old Westbury, Monday, 10 August
Light rain. High 88°, low 71°.
0Old Westbury, Tuesday, 11 August
Light rain. High 92°, low 74°.
0
Old Westbury, Wednesday, 12 August
Overcast. High 85°, low 75°.
0
Old Westbury, Thursday, 13 August
Clear. High 90°, low 74°.
0
Old Westbury, Friday, 14 August
Partly cloudy. High 80°, low 68°.
0Old Westbury, Saturday, 15 August
Clear. High 79°, low 65°.
0Old Westbury, Sunday, 16 August
Overcast. High 79°, low 68°.
0.17Old Westbury, Monday, 17 August
Light rain. High 74°, low 67°.
0Old Westbury, Tuesday, 18 August
Overcast. High 83°, low 65°.
0Old Westbury, Wednesday, 19 August
Clear. High 80°, low 73°.
0.01Old Westbury, Thursday, 20 August
Light rain. High 85°, low 72°.
0Old Westbury, Friday, 21 August
Partly cloudy. High 85°, low 67°.
0Old Westbury, Saturday, 22 August
Clear. High 85°, low 73°.
0.02Old Westbury, Sunday, 23 August
Light rain. High 90°, low 75°.
0Old Westbury, Monday, 24 August
Clear. High 82°, low 68°.
0.08Old Westbury, Tuesday, 25 August
Climate normal for this date — 60-year average.
0.07Old Westbury, Wednesday, 26 August
Climate normal for this date — 60-year average.
0.13
Old Westbury, Thursday, 27 August
Climate normal for this date — 60-year average.
0.19Old Westbury, Friday, 28 August
Climate normal for this date — 60-year average.
0.14Old Westbury, Saturday, 29 August
Climate normal for this date — 60-year average.
0.07Old Westbury, Sunday, 30 August
Climate normal for this date — 60-year average.
0.05Old Westbury, Monday, 31 August
Climate normal for this date — 60-year average.
0.07Old Westbury, Tuesday, 1 September
Climate normal for this date — 60-year average.
0.16Old Westbury, Wednesday, 2 September
Climate normal for this date — 60-year average.
0.12Old Westbury, Thursday, 3 September
Climate normal for this date — 60-year average.
0.12Old Westbury, Friday, 4 September
Climate normal for this date — 60-year average.
0.05Old Westbury, Saturday, 5 September
Climate normal for this date — 60-year average.
0.18Old Westbury, Sunday, 6 September
Climate normal for this date — 60-year average.
0.09Old Westbury, Monday, 7 September
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 Westbury, 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 Old Westbury, 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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