Weather in Hartsville, NY
Hartsville, Sunday, 9 August, 06:46
Clear. Feels like 64°. High 82°, low 63°.
Monthly outlook for Hartsville, NY: average high 76.6°, average low 56.8°. That is 0.2° below the climate normal for August. Precipitation is expected on 3 days (about 0.9 inches), against a normal of 6 days and 1.7 inches. The warmest day looks like 21 August (88.5°), the coolest 15 August (43.5°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 9 August – 18 August | 73.6° | 77.5° | -2.2° |
| 19 August – 28 August | 81.4° | 76.4° | +2.8° |
| 29 August – 7 September | at normal | 74.9° | — |
August records over 66 years
Climate normals and records are computed from the nearest reference point — Hornell (7 mi).
0.07
Hartsville, Monday, 10 August
Light rain. High 82°, low 63°.
0Hartsville, Tuesday, 11 August
Light rain. High 78°, low 61°.
0.07Hartsville, Wednesday, 12 August
Light rain. High 75°, low 61°.
0.03Hartsville, Thursday, 13 August
Light rain. High 69°, low 56°.
0.02Hartsville, Friday, 14 August
Light rain. High 63°, low 44°.
0Hartsville, Saturday, 15 August
Clear. High 68°, low 44°.
0
Hartsville, Sunday, 16 August
Overcast. High 69°, low 47°.
0.02Hartsville, Monday, 17 August
Light rain. High 75°, low 54°.
0Hartsville, Tuesday, 18 August
Light rain. High 76°, low 54°.
0
Hartsville, Wednesday, 19 August
Partly cloudy. High 80°, low 54°.
0Hartsville, Thursday, 20 August
Partly cloudy. High 86°, low 59°.
0.03Hartsville, Friday, 21 August
Light rain. High 88°, low 64°.
0Hartsville, Saturday, 22 August
Overcast. High 80°, low 61°.
0.02Hartsville, Sunday, 23 August
Light rain. High 87°, low 62°.
0.63Hartsville, Monday, 24 August
Rain. High 67°, low 61°.
0.06Hartsville, Tuesday, 25 August
Climate normal for this date — 60-year average.
0.07Hartsville, Wednesday, 26 August
Climate normal for this date — 60-year average.
0.11
Hartsville, Thursday, 27 August
Climate normal for this date — 60-year average.
0.16Hartsville, Friday, 28 August
Climate normal for this date — 60-year average.
0.14Hartsville, Saturday, 29 August
Climate normal for this date — 60-year average.
0.11Hartsville, Sunday, 30 August
Climate normal for this date — 60-year average.
0.11Hartsville, Monday, 31 August
Climate normal for this date — 60-year average.
0.08Hartsville, Tuesday, 1 September
Climate normal for this date — 60-year average.
0.14Hartsville, Wednesday, 2 September
Climate normal for this date — 60-year average.
0.09Hartsville, Thursday, 3 September
Climate normal for this date — 60-year average.
0.07Hartsville, Friday, 4 September
Climate normal for this date — 60-year average.
0.09Hartsville, Saturday, 5 September
Climate normal for this date — 60-year average.
0.11Hartsville, Sunday, 6 September
Climate normal for this date — 60-year average.
0.12Hartsville, 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 Hartsville, 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 Hartsville, 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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