Weather in Grand Island, NY
Grand Island, Sunday, 9 August, 10:13
Clear. Feels like 75°. High 83°, low 65°.
Monthly outlook for Grand Island, NY: average high 75.9°, average low 60.8°. That is 0.2° below the climate normal for August. Precipitation is expected on 6 days (about 1.6 inches), against a normal of 6 days and 1.7 inches. The warmest day looks like 9 August (82.8°), the coolest 24 August (55.2°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 9 August – 18 August | 76.5° | 76.9° | -0.2° |
| 19 August – 28 August | 74.8° | 75.7° | -0.5° |
| 29 August – 7 September | at normal | 74.4° | — |
August records over 66 years
Climate normals and records are computed from the nearest reference point — Buffalo (10 mi).
0.32
Grand Island, Monday, 10 August
Rain. High 81°, low 68°.
0
Grand Island, Tuesday, 11 August
Overcast. High 82°, low 64°.
0.12Grand Island, Wednesday, 12 August
Light rain. High 79°, low 66°.
0.05Grand Island, Thursday, 13 August
Light rain. High 74°, low 59°.
0Grand Island, Friday, 14 August
Clear. High 71°, low 56°.
0Grand Island, Saturday, 15 August
Overcast. High 71°, low 56°.
0Grand Island, Sunday, 16 August
Overcast. High 69°, low 57°.
0Grand Island, Monday, 17 August
Clear. High 77°, low 61°.
0
Grand Island, Tuesday, 18 August
Partly cloudy. High 79°, low 61°.
0.14Grand Island, Wednesday, 19 August
Light rain. High 78°, low 65°.
0Grand Island, Thursday, 20 August
Overcast. High 73°, low 60°.
0Grand Island, Friday, 21 August
Partly cloudy. High 76°, low 57°.
0.85Grand Island, Saturday, 22 August
Heavy rain. High 78°, low 65°.
0.11Grand Island, Sunday, 23 August
Light rain. High 70°, low 58°.
0Grand Island, Monday, 24 August
Overcast. High 73°, low 55°.
0.11Grand Island, Tuesday, 25 August
Climate normal for this date — 60-year average.
0.06Grand Island, Wednesday, 26 August
Climate normal for this date — 60-year average.
0.14
Grand Island, Thursday, 27 August
Climate normal for this date — 60-year average.
0.17Grand Island, Friday, 28 August
Climate normal for this date — 60-year average.
0.11Grand Island, Saturday, 29 August
Climate normal for this date — 60-year average.
0.06Grand Island, Sunday, 30 August
Climate normal for this date — 60-year average.
0.11Grand Island, Monday, 31 August
Climate normal for this date — 60-year average.
0.06Grand Island, Tuesday, 1 September
Climate normal for this date — 60-year average.
0.17Grand Island, Wednesday, 2 September
Climate normal for this date — 60-year average.
0.11Grand Island, Thursday, 3 September
Climate normal for this date — 60-year average.
0.11Grand Island, Friday, 4 September
Climate normal for this date — 60-year average.
0.09Grand Island, Saturday, 5 September
Climate normal for this date — 60-year average.
0.1Grand Island, Sunday, 6 September
Climate normal for this date — 60-year average.
0.15Grand Island, 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 Grand Island, 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 Grand Island, 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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