Weather in Rock Harbor, MA
Rock Harbor, Sunday, 8 November, 21:23
Clear. Feels like 50°. High 56°, low 46°.
Monthly outlook for Rock Harbor, MA: average high 50.2°, average low 45°. That is 0.1° above the climate normal for November. Precipitation is expected on 4 days (about 1.4 inches), against a normal of 5 days and 2.3 inches. The warmest day looks like 8 November (55.9°), the coolest 23 November (40.6°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 8 November – 17 November | 51.3° | 51° | +0.1° |
| 18 November – 27 November | 48.6° | 48.2° | +0.2° |
| 28 November – 7 December | at normal | 46.2° | — |
November records over 66 years
Climate normals and records are computed from the nearest reference point — Chatham (9 mi).
0.02
Rock Harbor, Monday, 9 November
Light rain. High 52°, low 46°.
0
Rock Harbor, Tuesday, 10 November
Overcast. High 55°, low 42°.
0
Rock Harbor, Wednesday, 11 November
Clear. High 55°, low 50°.
0.01Rock Harbor, Thursday, 12 November
Light rain. High 53°, low 51°.
0.01Rock Harbor, Friday, 13 November
Light rain. High 51°, low 48°.
0.89Rock Harbor, Saturday, 14 November
Rain. High 48°, low 45°.
0.01Rock Harbor, Sunday, 15 November
Light rain. High 47°, low 41°.
0.01Rock Harbor, Monday, 16 November
Light rain. High 47°, low 42°.
0.03Rock Harbor, Tuesday, 17 November
Light rain. High 48°, low 45°.
0Rock Harbor, Wednesday, 18 November
Overcast. High 47°, low 44°.
0Rock Harbor, Thursday, 19 November
Clear. High 47°, low 43°.
0.01Rock Harbor, Friday, 20 November
Light rain. High 54°, low 47°.
0.05Rock Harbor, Saturday, 21 November
Light rain. High 54°, low 46°.
0.28Rock Harbor, Sunday, 22 November
Rain. High 46°, low 41°.
0Rock Harbor, Monday, 23 November
Clear. High 44°, low 41°.
0.14
Rock Harbor, Tuesday, 24 November
Climate normal for this date — 60-year average.
0.12
Rock Harbor, Wednesday, 25 November
Climate normal for this date — 60-year average.
0.17Rock Harbor, Thursday, 26 November
Climate normal for this date — 60-year average.
0.13Rock Harbor, Friday, 27 November
Climate normal for this date — 60-year average.
0.17Rock Harbor, Saturday, 28 November
Climate normal for this date — 60-year average.
0.11Rock Harbor, Sunday, 29 November
Climate normal for this date — 60-year average.
0.13Rock Harbor, Monday, 30 November
Climate normal for this date — 60-year average.
0.13Rock Harbor, Tuesday, 1 December
Climate normal for this date — 60-year average.
0.16Rock Harbor, Wednesday, 2 December
Climate normal for this date — 60-year average.
0.18Rock Harbor, Thursday, 3 December
Climate normal for this date — 60-year average.
0.13Rock Harbor, Friday, 4 December
Climate normal for this date — 60-year average.
0.19Rock Harbor, Saturday, 5 December
Climate normal for this date — 60-year average.
0.21Rock Harbor, Sunday, 6 December
Climate normal for this date — 60-year average.
0.19Rock Harbor, Monday, 7 December
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 Rock Harbor, 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 Rock Harbor, 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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