Weather in South Acton, MA
South Acton, Tuesday, 27 October, 11:53
Mostly clear. Feels like 48°. High 54°, low 41°.
Monthly outlook for South Acton, MA: average high 55.2°, average low 40.9°. That is 0.9° above the climate normal for October. Precipitation is expected on 6 days (about 2.8 inches), against a normal of 5 days and 1.8 inches. The warmest day looks like 30 October (67.3°), the coolest 4 November (32°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 27 October – 5 November | 57.4° | 54.8° | +1.4° |
| 6 November – 15 November | 51.5° | 49.9° | +0.9° |
| 16 November – 25 November | at normal | 45.4° | — |
October records over 66 years
Climate normals and records are computed from the nearest reference point — Groton (12 mi).
0
South Acton, Wednesday, 28 October
Overcast. High 56°, low 33°.
0
South Acton, Thursday, 29 October
Clear. High 66°, low 42°.
0South Acton, Friday, 30 October
Clear. High 67°, low 45°.
0South Acton, Saturday, 31 October
Overcast. High 52°, low 37°.
0South Acton, Sunday, 1 November
Clear. High 59°, low 33°.
0.24
South Acton, Monday, 2 November
Rain. High 61°, low 45°.
0.72South Acton, Tuesday, 3 November
Rain. High 55°, low 37°.
0
South Acton, Wednesday, 4 November
Partly cloudy. High 49°, low 32°.
0.11South Acton, Thursday, 5 November
Light rain. High 54°, low 38°.
1.37South Acton, Friday, 6 November
Heavy rain. High 52°, low 50°.
0.06South Acton, Saturday, 7 November
Light rain. High 49°, low 48°.
0.01South Acton, Sunday, 8 November
Light rain. High 49°, low 47°.
0.02South Acton, Monday, 9 November
Light rain. High 51°, low 45°.
0.28South Acton, Tuesday, 10 November
Rain. High 53°, low 45°.
0.04South Acton, Wednesday, 11 November
Light rain. High 53°, low 37°.
0.13
South Acton, Thursday, 12 November
Climate normal for this date — 60-year average.
0.15South Acton, Friday, 13 November
Climate normal for this date — 60-year average.
0.12South Acton, Saturday, 14 November
Climate normal for this date — 60-year average.
0.12South Acton, Sunday, 15 November
Climate normal for this date — 60-year average.
0.15South Acton, Monday, 16 November
Climate normal for this date — 60-year average.
0.13South Acton, Tuesday, 17 November
Climate normal for this date — 60-year average.
0.07South Acton, Wednesday, 18 November
Climate normal for this date — 60-year average.
0.06South Acton, Thursday, 19 November
Climate normal for this date — 60-year average.
0.12South Acton, Friday, 20 November
Climate normal for this date — 60-year average.
0.12South Acton, Saturday, 21 November
Climate normal for this date — 60-year average.
0.15South Acton, Sunday, 22 November
Climate normal for this date — 60-year average.
0.14South Acton, Monday, 23 November
Climate normal for this date — 60-year average.
0.07South Acton, Tuesday, 24 November
Climate normal for this date — 60-year average.
0.14South Acton, Wednesday, 25 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 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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