Weather in Harthaven, MA
Harthaven, Tuesday, 20 October, 14:13
Overcast. Feels like 57°. High 60°, low 41°.
Monthly outlook for Harthaven, MA: average high 55.3°, average low 46.3°. That is 0.9° below the climate normal for October. Precipitation is expected on 2 days (about 0.3 inches), against a normal of 5 days and 2.2 inches. The warmest day looks like 28 October (60.7°), the coolest 21 October (39.6°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 20 October – 29 October | 56.4° | 57.6° | -0.7° |
| 30 October – 8 November | 53.4° | 55.2° | -1° |
| 9 November – 18 November | at normal | 51.9° | — |
October records over 66 years
Climate normals and records are computed from the nearest reference point — Edgartown (5 mi).
0.17
Harthaven, Wednesday, 21 October
Rain. High 56°, low 40°.
0.12Harthaven, Thursday, 22 October
Light rain. High 59°, low 42°.
0
Harthaven, Friday, 23 October
Clear. High 51°, low 44°.
0Harthaven, Saturday, 24 October
Clear. High 51°, low 44°.
0
Harthaven, Sunday, 25 October
Mostly clear. High 55°, low 49°.
0Harthaven, Monday, 26 October
Mostly clear. High 59°, low 55°.
0Harthaven, Tuesday, 27 October
Overcast. High 60°, low 59°.
0.03Harthaven, Wednesday, 28 October
Light rain. High 61°, low 45°.
0Harthaven, Thursday, 29 October
Clear. High 52°, low 42°.
0.03Harthaven, Friday, 30 October
Light rain. High 58°, low 49°.
0Harthaven, Saturday, 31 October
Clear. High 48°, low 40°.
0Harthaven, Sunday, 1 November
Overcast. High 57°, low 48°.
0Harthaven, Monday, 2 November
Clear. High 56°, low 49°.
0Harthaven, Tuesday, 3 November
Clear. High 49°, low 45°.
0Harthaven, Wednesday, 4 November
Clear. High 53°, low 49°.
0.17
Harthaven, Thursday, 5 November
Climate normal for this date — 60-year average.
0.15Harthaven, Friday, 6 November
Climate normal for this date — 60-year average.
0.08
Harthaven, Saturday, 7 November
Climate normal for this date — 60-year average.
0.15Harthaven, Sunday, 8 November
Climate normal for this date — 60-year average.
0.11Harthaven, Monday, 9 November
Climate normal for this date — 60-year average.
0.21Harthaven, Tuesday, 10 November
Climate normal for this date — 60-year average.
0.13Harthaven, Wednesday, 11 November
Climate normal for this date — 60-year average.
0.18Harthaven, Thursday, 12 November
Climate normal for this date — 60-year average.
0.23Harthaven, Friday, 13 November
Climate normal for this date — 60-year average.
0.12Harthaven, Saturday, 14 November
Climate normal for this date — 60-year average.
0.11Harthaven, Sunday, 15 November
Climate normal for this date — 60-year average.
0.15Harthaven, Monday, 16 November
Climate normal for this date — 60-year average.
0.18Harthaven, Tuesday, 17 November
Climate normal for this date — 60-year average.
0.09Harthaven, Wednesday, 18 November
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 Harthaven, MA 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 Harthaven, MA 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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