Weather in Dumbarton, NY
Dumbarton, Saturday, 8 August, 23:49
Clear. Feels like 73°. High 88°, low 68°.
Monthly outlook for Dumbarton, NY: average high 76°, average low 58.2°. That is 0.3° below the climate normal for August. Precipitation is expected on 10 days (about 2.2 inches), against a normal of 7 days and 2.4 inches. The warmest day looks like 9 August (87.6°), the coolest 22 August (47.4°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 9 August – 18 August | 78.5° | 77.4° | +0.6° |
| 19 August – 28 August | 72° | 75.6° | -2° |
| 29 August – 7 September | at normal | 74.3° | — |
August records over 66 years
Climate normals and records are computed from the nearest reference point — Sylvan Beach (4 mi).
0.15
Dumbarton, Monday, 10 August
Light rain. High 86°, low 65°.
0.01Dumbarton, Tuesday, 11 August
Light rain. High 82°, low 65°.
0.33Dumbarton, Wednesday, 12 August
Rain. High 80°, low 63°.
0.09Dumbarton, Thursday, 13 August
Light rain. High 72°, low 59°.
0.06Dumbarton, Friday, 14 August
Light rain. High 71°, low 55°.
0
Dumbarton, Saturday, 15 August
Clear. High 72°, low 52°.
0Dumbarton, Sunday, 16 August
Clear. High 75°, low 50°.
0.08Dumbarton, Monday, 17 August
Light rain. High 77°, low 55°.
0Dumbarton, Tuesday, 18 August
Light rain. High 80°, low 61°.
0.43Dumbarton, Wednesday, 19 August
Rain. High 78°, low 61°.
0.58Dumbarton, Thursday, 20 August
Rain. High 68°, low 58°.
0.04Dumbarton, Friday, 21 August
Light rain. High 71°, low 53°.
0Dumbarton, Saturday, 22 August
Clear. High 71°, low 47°.
0.33Dumbarton, Sunday, 23 August
Rain. High 78°, low 55°.
0.11Dumbarton, Monday, 24 August
Light rain. High 66°, low 63°.
0.12
Dumbarton, Tuesday, 25 August
Climate normal for this date — 60-year average.
0.09Dumbarton, Wednesday, 26 August
Climate normal for this date — 60-year average.
0.18Dumbarton, Thursday, 27 August
Climate normal for this date — 60-year average.
0.26Dumbarton, Friday, 28 August
Climate normal for this date — 60-year average.
0.18Dumbarton, Saturday, 29 August
Climate normal for this date — 60-year average.
0.15Dumbarton, Sunday, 30 August
Climate normal for this date — 60-year average.
0.15Dumbarton, Monday, 31 August
Climate normal for this date — 60-year average.
0.07
Dumbarton, Tuesday, 1 September
Climate normal for this date — 60-year average.
0.16Dumbarton, Wednesday, 2 September
Climate normal for this date — 60-year average.
0.15Dumbarton, Thursday, 3 September
Climate normal for this date — 60-year average.
0.13Dumbarton, Friday, 4 September
Climate normal for this date — 60-year average.
0.12Dumbarton, Saturday, 5 September
Climate normal for this date — 60-year average.
0.18Dumbarton, Sunday, 6 September
Climate normal for this date — 60-year average.
0.14Dumbarton, 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 Dumbarton, 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 Dumbarton, 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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