Weather in Chelmsford, MA
Chelmsford, Sunday, 1 November, 02:34
Clear. Feels like 33°. High 61°, low 33°.
Monthly outlook for Chelmsford, MA: average high 58°, average low 44.6°. That is 3.3° above the climate normal for November. Precipitation is expected on 7 days (about 2.8 inches), against a normal of 5 days and 1.9 inches. The warmest day looks like 2 November (73.7°), the coolest 1 November (32.6°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 1 November – 10 November | 62.4° | 54° | +4.7° |
| 11 November – 20 November | 50.8° | 48.4° | +1.3° |
| 21 November – 30 November | at normal | 45.5° | — |
November records over 66 years
Climate normals and records are computed from the nearest reference point — Lowell (3 mi).
0
Chelmsford, Monday, 2 November
Overcast. High 74°, low 45°.
0Chelmsford, Tuesday, 3 November
Overcast. High 70°, low 49°.
0
Chelmsford, Wednesday, 4 November
Mostly clear. High 72°, low 53°.
0.02
Chelmsford, Thursday, 5 November
Light rain. High 67°, low 55°.
0.42Chelmsford, Friday, 6 November
Light rain. High 65°, low 53°.
0.13Chelmsford, Saturday, 7 November
Light rain. High 59°, low 52°.
0.59Chelmsford, Sunday, 8 November
Rain. High 58°, low 49°.
0Chelmsford, Monday, 9 November
Light rain. High 49°, low 46°.
0.06Chelmsford, Tuesday, 10 November
Light rain. High 49°, low 41°.
0.1Chelmsford, Wednesday, 11 November
Light rain. High 46°, low 38°.
0
Chelmsford, Thursday, 12 November
Partly cloudy. High 50°, low 38°.
0Chelmsford, Friday, 13 November
Overcast. High 51°, low 36°.
1.3Chelmsford, Saturday, 14 November
Heavy rain. High 55°, low 39°.
0.17Chelmsford, Sunday, 15 November
Light rain. High 53°, low 45°.
0Chelmsford, Monday, 16 November
Overcast. High 50°, low 43°.
0.14Chelmsford, Tuesday, 17 November
Climate normal for this date — 60-year average.
0.07Chelmsford, Wednesday, 18 November
Climate normal for this date — 60-year average.
0.05Chelmsford, Thursday, 19 November
Climate normal for this date — 60-year average.
0.13Chelmsford, Friday, 20 November
Climate normal for this date — 60-year average.
0.13
Chelmsford, Saturday, 21 November
Climate normal for this date — 60-year average.
0.14Chelmsford, Sunday, 22 November
Climate normal for this date — 60-year average.
0.13Chelmsford, Monday, 23 November
Climate normal for this date — 60-year average.
0.07Chelmsford, Tuesday, 24 November
Climate normal for this date — 60-year average.
0.14Chelmsford, Wednesday, 25 November
Climate normal for this date — 60-year average.
0.19Chelmsford, Thursday, 26 November
Climate normal for this date — 60-year average.
0.13Chelmsford, Friday, 27 November
Climate normal for this date — 60-year average.
0.18Chelmsford, Saturday, 28 November
Climate normal for this date — 60-year average.
0.07Chelmsford, Sunday, 29 November
Climate normal for this date — 60-year average.
0.11Chelmsford, Monday, 30 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 Chelmsford, 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 Chelmsford, 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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