Weather in North Great River, NY
North Great River, Sunday, 9 August, 03:32
Clear. Feels like 77°. High 90°, low 74°.
Monthly outlook for North Great River, NY: average high 84.1°, average low 71.2°. That is 3.3° above the climate normal for August. Precipitation is expected on 5 days (about 0.7 inches), against a normal of 5 days and 2.2 inches. The warmest day looks like 9 August (90.1°), the coolest 15 August (64.3°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 9 August – 18 August | 83.2° | 78.7° | +2.5° |
| 19 August – 28 August | 85.4° | 77.2° | +4.5° |
| 29 August – 7 September | at normal | 76° | — |
August records over 66 years
Climate normals and records are computed from the nearest reference point — Islip (2 mi).
0
North Great River, Monday, 10 August
Partly cloudy. High 86°, low 72°.
0.04
North Great River, Tuesday, 11 August
Light rain. High 90°, low 74°.
0
North Great River, Wednesday, 12 August
Overcast. High 82°, low 73°.
0.17North Great River, Thursday, 13 August
Light rain. High 84°, low 71°.
0
North Great River, Friday, 14 August
Clear. High 77°, low 65°.
0North Great River, Saturday, 15 August
Clear. High 80°, low 64°.
0North Great River, Sunday, 16 August
Overcast. High 81°, low 66°.
0.02North Great River, Monday, 17 August
Light rain. High 80°, low 69°.
0.02North Great River, Tuesday, 18 August
Light rain. High 82°, low 69°.
0.01North Great River, Wednesday, 19 August
Light rain. High 82°, low 71°.
0
North Great River, Thursday, 20 August
Mostly clear. High 83°, low 71°.
0.22North Great River, Friday, 21 August
Rain. High 83°, low 74°.
0.07North Great River, Saturday, 22 August
Light rain. High 90°, low 74°.
0North Great River, Sunday, 23 August
Clear. High 88°, low 75°.
0.11North Great River, Monday, 24 August
Light rain. High 87°, low 77°.
0.09North Great River, Tuesday, 25 August
Climate normal for this date — 60-year average.
0.08North Great River, Wednesday, 26 August
Climate normal for this date — 60-year average.
0.12
North Great River, Thursday, 27 August
Climate normal for this date — 60-year average.
0.19North Great River, Friday, 28 August
Climate normal for this date — 60-year average.
0.14North Great River, Saturday, 29 August
Climate normal for this date — 60-year average.
0.07North Great River, Sunday, 30 August
Climate normal for this date — 60-year average.
0.05North Great River, Monday, 31 August
Climate normal for this date — 60-year average.
0.06North Great River, Tuesday, 1 September
Climate normal for this date — 60-year average.
0.19North Great River, Wednesday, 2 September
Climate normal for this date — 60-year average.
0.11North Great River, Thursday, 3 September
Climate normal for this date — 60-year average.
0.13North Great River, Friday, 4 September
Climate normal for this date — 60-year average.
0.05North Great River, Saturday, 5 September
Climate normal for this date — 60-year average.
0.13North Great River, Sunday, 6 September
Climate normal for this date — 60-year average.
0.08North Great River, 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 North Great River, 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 North Great River, 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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