Weather in South Acton, MA
South Acton, Sunday, 15 November, 00:15
Clear. Feels like 34°. High 46°, low 34°.
Monthly outlook for South Acton, MA: average high 50.5°, average low 34.4°. That is 2.8° above the climate normal for November. Precipitation is expected on 1 day (about 1.4 inches), against a normal of 5 days and 1.9 inches. The warmest day looks like 19 November (61.7°), the coolest 25 November (25.5°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 15 November – 24 November | 52° | 45.8° | +3.5° |
| 25 November – 4 December | 47.8° | 43.6° | +2.3° |
| 5 December – 14 December | at normal | 38.8° | — |
November records over 66 years
Climate normals and records are computed from the nearest reference point — Groton (12 mi).
0
South Acton, Monday, 16 November
Overcast. High 47°, low 33°.
0
South Acton, Tuesday, 17 November
Clear. High 53°, low 31°.
0
South Acton, Wednesday, 18 November
Mostly clear. High 61°, low 39°.
0
South Acton, Thursday, 19 November
Partly cloudy. High 62°, low 37°.
0South Acton, Friday, 20 November
Clear. High 60°, low 45°.
0South Acton, Saturday, 21 November
Clear. High 53°, low 40°.
0South Acton, Sunday, 22 November
Overcast. High 50°, low 39°.
0.02
South Acton, Monday, 23 November
Light rain. High 56°, low 34°.
0.01
South Acton, Tuesday, 24 November
Light snow. High 31°, low 26°.
0South Acton, Wednesday, 25 November
Clear. High 39°, low 25°.
0South Acton, Thursday, 26 November
Mostly clear. High 44°, low 26°.
0South Acton, Friday, 27 November
Overcast. High 46°, low 28°.
1.32South Acton, Saturday, 28 November
Heavy rain. High 61°, low 35°.
0South Acton, Sunday, 29 November
Clear. High 52°, low 41°.
0South Acton, Monday, 30 November
Overcast. High 44°, low 37°.
0.11South Acton, Tuesday, 1 December
Climate normal for this date — 60-year average.
0.11South Acton, Wednesday, 2 December
Climate normal for this date — 60-year average.
0.15
South Acton, Thursday, 3 December
Climate normal for this date — 60-year average.
0.11South Acton, Friday, 4 December
Climate normal for this date — 60-year average.
0.14South Acton, Saturday, 5 December
Climate normal for this date — 60-year average.
0.15South Acton, Sunday, 6 December
Climate normal for this date — 60-year average.
0.13South Acton, Monday, 7 December
Climate normal for this date — 60-year average.
0.09South Acton, Tuesday, 8 December
Climate normal for this date — 60-year average.
0.17South Acton, Wednesday, 9 December
Climate normal for this date — 60-year average.
0.07South Acton, Thursday, 10 December
Climate normal for this date — 60-year average.
0.19South Acton, Friday, 11 December
Climate normal for this date — 60-year average.
0.18South Acton, Saturday, 12 December
Climate normal for this date — 60-year average.
0.08South Acton, Sunday, 13 December
Climate normal for this date — 60-year average.
0.17South Acton, Monday, 14 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 South Acton, 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 South Acton, 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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