Weather in Locust Valley, NY
Locust Valley, Sunday, 9 August, 03:17
Clear. Feels like 77°. High 90°, low 74°.
Monthly outlook for Locust Valley, NY: average high 85.3°, average low 72.2°. That is 2.7° above the climate normal for August. Precipitation is expected on 5 days (about 0.5 inches), against a normal of 5 days and 2.2 inches. The warmest day looks like 22 August (94°), the coolest 15 August (63.4°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 9 August – 18 August | 83.9° | 81.3° | +1.4° |
| 19 August – 28 August | 87.8° | 79.7° | +4.5° |
| 29 August – 7 September | at normal | 78.3° | — |
August records over 66 years
Climate normals and records are computed from the nearest reference point — Port Washington North (6 mi).
0.01
Locust Valley, Monday, 10 August
Light rain. High 87°, low 71°.
0.08Locust Valley, Tuesday, 11 August
Light rain. High 90°, low 75°.
0
Locust Valley, Wednesday, 12 August
Overcast. High 81°, low 75°.
0.07Locust Valley, Thursday, 13 August
Light rain. High 85°, low 71°.
0
Locust Valley, Friday, 14 August
Clear. High 78°, low 65°.
0Locust Valley, Saturday, 15 August
Clear. High 80°, low 63°.
0Locust Valley, Sunday, 16 August
Overcast. High 82°, low 66°.
0.04Locust Valley, Monday, 17 August
Light rain. High 81°, low 70°.
0.01Locust Valley, Tuesday, 18 August
Light rain. High 84°, low 69°.
0.01Locust Valley, Wednesday, 19 August
Light rain. High 83°, low 74°.
0
Locust Valley, Thursday, 20 August
Mostly clear. High 84°, low 74°.
0.03Locust Valley, Friday, 21 August
Light rain. High 88°, low 76°.
0.04Locust Valley, Saturday, 22 August
Light rain. High 94°, low 77°.
0Locust Valley, Sunday, 23 August
Clear. High 93°, low 77°.
0.23Locust Valley, Monday, 24 August
Light rain. High 86°, low 77°.
0.07
Locust Valley, Tuesday, 25 August
Climate normal for this date — 60-year average.
0.06Locust Valley, Wednesday, 26 August
Climate normal for this date — 60-year average.
0.13
Locust Valley, Thursday, 27 August
Climate normal for this date — 60-year average.
0.19Locust Valley, Friday, 28 August
Climate normal for this date — 60-year average.
0.13Locust Valley, Saturday, 29 August
Climate normal for this date — 60-year average.
0.07Locust Valley, Sunday, 30 August
Climate normal for this date — 60-year average.
0.05Locust Valley, Monday, 31 August
Climate normal for this date — 60-year average.
0.1Locust Valley, Tuesday, 1 September
Climate normal for this date — 60-year average.
0.17Locust Valley, Wednesday, 2 September
Climate normal for this date — 60-year average.
0.11Locust Valley, Thursday, 3 September
Climate normal for this date — 60-year average.
0.11Locust Valley, Friday, 4 September
Climate normal for this date — 60-year average.
0.05Locust Valley, Saturday, 5 September
Climate normal for this date — 60-year average.
0.17Locust Valley, Sunday, 6 September
Climate normal for this date — 60-year average.
0.1Locust Valley, 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 Locust Valley, 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 Locust Valley, 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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