Weather in Chelmsford, MA
Chelmsford, Friday, 6 November, 06:21
Overcast. Feels like 66°. High 67°, low 61°.
Monthly outlook for Chelmsford, MA: average high 49.1°, average low 37.4°. That is 0.2° below the climate normal for November. Precipitation is expected on 7 days (about 3.9 inches), against a normal of 5 days and 1.8 inches. The warmest day looks like 6 November (67°), the coolest 14 November (25°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 6 November – 15 November | 51.4° | 50.8° | +0.3° |
| 16 November – 25 November | 45.2° | 46.5° | -0.7° |
| 26 November – 5 December | at normal | 44.1° | — |
November records over 66 years
Climate normals and records are computed from the nearest reference point — Lowell (3 mi).
0.66
Chelmsford, Saturday, 7 November
Heavy rain. High 61°, low 49°.
0.49Chelmsford, Sunday, 8 November
Rain. High 57°, low 44°.
0.09Chelmsford, Monday, 9 November
Light rain. High 55°, low 43°.
0Chelmsford, Tuesday, 10 November
Overcast. High 53°, low 40°.
0
Chelmsford, Wednesday, 11 November
Partly cloudy. High 55°, low 40°.
0Chelmsford, Thursday, 12 November
Overcast. High 48°, low 33°.
0.84
Chelmsford, Friday, 13 November
Snow. High 40°, low 31°.
0Chelmsford, Saturday, 14 November
Overcast. High 36°, low 25°.
0
Chelmsford, Sunday, 15 November
Clear. High 40°, low 28°.
0Chelmsford, Monday, 16 November
Clear. High 43°, low 29°.
0Chelmsford, Tuesday, 17 November
Overcast. High 44°, low 30°.
0.12Chelmsford, Wednesday, 18 November
Light rain. High 42°, low 40°.
0Chelmsford, Thursday, 19 November
Overcast. High 45°, low 35°.
0Chelmsford, Friday, 20 November
Overcast. High 41°, low 32°.
1.17Chelmsford, Saturday, 21 November
Rain. High 56°, low 39°.
0.14
Chelmsford, 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.
0.11Chelmsford, Tuesday, 1 December
Climate normal for this date — 60-year average.
0.12Chelmsford, Wednesday, 2 December
Climate normal for this date — 60-year average.
0.15Chelmsford, Thursday, 3 December
Climate normal for this date — 60-year average.
0.11Chelmsford, Friday, 4 December
Climate normal for this date — 60-year average.
0.14Chelmsford, Saturday, 5 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 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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