Weather in Lake Ronkonkoma, NY
Lake Ronkonkoma, Sunday, 9 August, 10:40
Overcast. Feels like 90°. High 88°, low 72°.
Monthly outlook for Lake Ronkonkoma, NY: average high 81.2°, average low 69.6°. That is 1.3° above the climate normal for August. Precipitation is expected on 2 days (about 0.5 inches), against a normal of 5 days and 2.2 inches. The warmest day looks like 11 August (87.8°), the coolest 15 August (64.6°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 9 August – 18 August | 81.3° | 79.6° | +1° |
| 19 August – 28 August | 80.9° | 77.9° | +1.7° |
| 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 (5 mi).
0
Lake Ronkonkoma, Monday, 10 August
Light rain. High 88°, low 71°.
0.01Lake Ronkonkoma, Tuesday, 11 August
Light rain. High 88°, low 74°.
0Lake Ronkonkoma, Wednesday, 12 August
Overcast. High 81°, low 71°.
0.01Lake Ronkonkoma, Thursday, 13 August
Light rain. High 85°, low 73°.
0
Lake Ronkonkoma, Friday, 14 August
Mostly clear. High 80°, low 68°.
0
Lake Ronkonkoma, Saturday, 15 August
Clear. High 77°, low 65°.
0Lake Ronkonkoma, Sunday, 16 August
Overcast. High 77°, low 65°.
0.43Lake Ronkonkoma, Monday, 17 August
Rain. High 72°, low 66°.
0Lake Ronkonkoma, Tuesday, 18 August
Overcast. High 78°, low 65°.
0Lake Ronkonkoma, Wednesday, 19 August
Mostly clear. High 78°, low 72°.
0.04Lake Ronkonkoma, Thursday, 20 August
Light rain. High 82°, low 72°.
0
Lake Ronkonkoma, Friday, 21 August
Partly cloudy. High 79°, low 67°.
0Lake Ronkonkoma, Saturday, 22 August
Clear. High 82°, low 72°.
0.04Lake Ronkonkoma, Sunday, 23 August
Light rain. High 88°, low 74°.
0Lake Ronkonkoma, Monday, 24 August
Clear. High 76°, low 68°.
0.09Lake Ronkonkoma, Tuesday, 25 August
Climate normal for this date — 60-year average.
0.09Lake Ronkonkoma, Wednesday, 26 August
Climate normal for this date — 60-year average.
0.11Lake Ronkonkoma, Thursday, 27 August
Climate normal for this date — 60-year average.
0.18
Lake Ronkonkoma, Friday, 28 August
Climate normal for this date — 60-year average.
0.16Lake Ronkonkoma, Saturday, 29 August
Climate normal for this date — 60-year average.
0.08Lake Ronkonkoma, Sunday, 30 August
Climate normal for this date — 60-year average.
0.05Lake Ronkonkoma, Monday, 31 August
Climate normal for this date — 60-year average.
0.07Lake Ronkonkoma, Tuesday, 1 September
Climate normal for this date — 60-year average.
0.19Lake Ronkonkoma, Wednesday, 2 September
Climate normal for this date — 60-year average.
0.11Lake Ronkonkoma, Thursday, 3 September
Climate normal for this date — 60-year average.
0.12Lake Ronkonkoma, Friday, 4 September
Climate normal for this date — 60-year average.
0.05Lake Ronkonkoma, Saturday, 5 September
Climate normal for this date — 60-year average.
0.14Lake Ronkonkoma, Sunday, 6 September
Climate normal for this date — 60-year average.
0.1Lake Ronkonkoma, 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 Ronkonkoma, 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 Ronkonkoma, 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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