Weather in Rock Harbor, MA
Rock Harbor, Thursday, 22 October, 07:47
Overcast. Feels like 53°. High 56°, low 47°.
Monthly outlook for Rock Harbor, MA: average high 55.4°, average low 48.8°. That is 0.1° above the climate normal for October. Precipitation is expected on 3 days (about 0.3 inches), against a normal of 5 days and 2.2 inches. The warmest day looks like 1 November (62.9°), the coolest 6 November (43°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 22 October – 31 October | 56.7° | 55.7° | +0.5° |
| 1 November – 10 November | 53.4° | 53.8° | -0.2° |
| 11 November – 20 November | at normal | 50° | — |
October records over 66 years
Climate normals and records are computed from the nearest reference point — Chatham (9 mi).
0
Rock Harbor, Friday, 23 October
Mostly clear. High 53°, low 43°.
0
Rock Harbor, Saturday, 24 October
Clear. High 53°, low 50°.
0Rock Harbor, Sunday, 25 October
Clear. High 57°, low 47°.
0Rock Harbor, Monday, 26 October
Clear. High 59°, low 48°.
0Rock Harbor, Tuesday, 27 October
Overcast. High 56°, low 47°.
0Rock Harbor, Wednesday, 28 October
Overcast. High 54°, low 46°.
0.06
Rock Harbor, Thursday, 29 October
Light rain. High 62°, low 54°.
0Rock Harbor, Friday, 30 October
Overcast. High 59°, low 53°.
0.03Rock Harbor, Saturday, 31 October
Light rain. High 58°, low 53°.
0.05Rock Harbor, Sunday, 1 November
Light rain. High 63°, low 59°.
0Rock Harbor, Monday, 2 November
Overcast. High 58°, low 53°.
0
Rock Harbor, Tuesday, 3 November
Partly cloudy. High 52°, low 48°.
0Rock Harbor, Wednesday, 4 November
Clear. High 52°, low 47°.
0Rock Harbor, Thursday, 5 November
Clear. High 46°, low 43°.
0Rock Harbor, Friday, 6 November
Overcast. High 50°, low 43°.
0.08Rock Harbor, Saturday, 7 November
Climate normal for this date — 60-year average.
0.16
Rock Harbor, Sunday, 8 November
Climate normal for this date — 60-year average.
0.11Rock Harbor, Monday, 9 November
Climate normal for this date — 60-year average.
0.2Rock Harbor, Tuesday, 10 November
Climate normal for this date — 60-year average.
0.13Rock Harbor, Wednesday, 11 November
Climate normal for this date — 60-year average.
0.17Rock Harbor, Thursday, 12 November
Climate normal for this date — 60-year average.
0.22Rock Harbor, Friday, 13 November
Climate normal for this date — 60-year average.
0.11Rock Harbor, Saturday, 14 November
Climate normal for this date — 60-year average.
0.11Rock Harbor, Sunday, 15 November
Climate normal for this date — 60-year average.
0.17Rock Harbor, Monday, 16 November
Climate normal for this date — 60-year average.
0.17Rock Harbor, Tuesday, 17 November
Climate normal for this date — 60-year average.
0.1Rock Harbor, Wednesday, 18 November
Climate normal for this date — 60-year average.
0.07Rock Harbor, Thursday, 19 November
Climate normal for this date — 60-year average.
0.1Rock Harbor, Friday, 20 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 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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