Weather in Lake Grove, NY
Lake Grove, Sunday, 9 August, 04:48
Clear. Feels like 76°. High 90°, low 73°.
Monthly outlook for Lake Grove, NY: average high 81.7°, average low 70.9°. That is 1.6° above the climate normal for August. Precipitation is expected on 5 days (about 0.6 inches), against a normal of 5 days and 2.2 inches. The warmest day looks like 9 August (89.7°), the coolest 15 August (63.7°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 9 August – 18 August | 81.4° | 79.6° | +1° |
| 19 August – 28 August | 82.3° | 77.9° | +2.5° |
| 29 August – 7 September | at normal | 76.4° | — |
August records over 66 years
Climate normals and records are computed from the nearest reference point — Stony Brook University (4 mi).
0
Lake Grove, Monday, 10 August
Partly cloudy. High 86°, low 71°.
0.06
Lake Grove, Tuesday, 11 August
Light rain. High 87°, low 74°.
0
Lake Grove, Wednesday, 12 August
Overcast. High 79°, low 72°.
0.12Lake Grove, Thursday, 13 August
Light rain. High 82°, low 70°.
0
Lake Grove, Friday, 14 August
Clear. High 76°, low 65°.
0Lake Grove, Saturday, 15 August
Clear. High 78°, low 64°.
0Lake Grove, Sunday, 16 August
Overcast. High 79°, low 66°.
0Lake Grove, Monday, 17 August
Overcast. High 78°, low 69°.
0.03Lake Grove, Tuesday, 18 August
Light rain. High 79°, low 69°.
0.02Lake Grove, Wednesday, 19 August
Light rain. High 79°, low 72°.
0Lake Grove, Thursday, 20 August
Clear. High 81°, low 71°.
0.17Lake Grove, Friday, 21 August
Rain. High 83°, low 74°.
0.07Lake Grove, Saturday, 22 August
Light rain. High 85°, low 74°.
0Lake Grove, Sunday, 23 August
Clear. High 83°, low 74°.
0.1Lake Grove, Monday, 24 August
Light rain. High 82°, low 76°.
0.09Lake Grove, Tuesday, 25 August
Climate normal for this date — 60-year average.
0.09Lake Grove, Wednesday, 26 August
Climate normal for this date — 60-year average.
0.11Lake Grove, Thursday, 27 August
Climate normal for this date — 60-year average.
0.18
Lake Grove, Friday, 28 August
Climate normal for this date — 60-year average.
0.16Lake Grove, Saturday, 29 August
Climate normal for this date — 60-year average.
0.08Lake Grove, Sunday, 30 August
Climate normal for this date — 60-year average.
0.05
Lake Grove, Monday, 31 August
Climate normal for this date — 60-year average.
0.07Lake Grove, Tuesday, 1 September
Climate normal for this date — 60-year average.
0.19Lake Grove, Wednesday, 2 September
Climate normal for this date — 60-year average.
0.11Lake Grove, Thursday, 3 September
Climate normal for this date — 60-year average.
0.12Lake Grove, Friday, 4 September
Climate normal for this date — 60-year average.
0.05Lake Grove, Saturday, 5 September
Climate normal for this date — 60-year average.
0.14Lake Grove, Sunday, 6 September
Climate normal for this date — 60-year average.
0.1Lake Grove, 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 Lake Grove, 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 Lake Grove, 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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