Weather in Merrimac, MA
Merrimac, Wednesday, 21 October, 20:21
Clear. Feels like 43°. High 58°, low 42°.
Monthly outlook for Merrimac, MA: average high 57.3°, average low 38.1°. That is 0.3° above the climate normal for October. Precipitation is expected on 3 days (about 1.6 inches), against a normal of 5 days and 2.0 inches. The warmest day looks like 22 October (66.6°), the coolest 5 November (28.7°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 21 October – 30 October | 57.6° | 57.4° | +0.1° |
| 31 October – 9 November | 56.7° | 54.2° | +1.4° |
| 10 November – 19 November | at normal | 48.8° | — |
October records over 66 years
Climate normals and records are computed from the nearest reference point — Lawrence (12 mi).
0
Merrimac, Thursday, 22 October
Mostly clear. High 67°, low 43°.
0
Merrimac, Friday, 23 October
Clear. High 54°, low 35°.
0Merrimac, Saturday, 24 October
Clear. High 58°, low 31°.
0Merrimac, Sunday, 25 October
Clear. High 63°, low 36°.
0Merrimac, Monday, 26 October
Clear. High 66°, low 38°.
0
Merrimac, Tuesday, 27 October
Overcast. High 53°, low 37°.
0Merrimac, Wednesday, 28 October
Overcast. High 50°, low 37°.
0.07
Merrimac, Thursday, 29 October
Light rain. High 63°, low 44°.
0Merrimac, Friday, 30 October
Clear. High 46°, low 34°.
0Merrimac, Saturday, 31 October
Clear. High 52°, low 35°.
0Merrimac, Sunday, 1 November
Overcast. High 64°, low 40°.
0Merrimac, Monday, 2 November
Overcast. High 65°, low 47°.
0.98Merrimac, Tuesday, 3 November
Rain. High 61°, low 52°.
0.52Merrimac, Wednesday, 4 November
Rain. High 51°, low 32°.
0Merrimac, Thursday, 5 November
Clear. High 48°, low 29°.
0.12
Merrimac, Friday, 6 November
Climate normal for this date — 60-year average.
0.05Merrimac, Saturday, 7 November
Climate normal for this date — 60-year average.
0.09
Merrimac, Sunday, 8 November
Climate normal for this date — 60-year average.
0.1Merrimac, Monday, 9 November
Climate normal for this date — 60-year average.
0.16Merrimac, Tuesday, 10 November
Climate normal for this date — 60-year average.
0.11Merrimac, Wednesday, 11 November
Climate normal for this date — 60-year average.
0.12Merrimac, Thursday, 12 November
Climate normal for this date — 60-year average.
0.15Merrimac, Friday, 13 November
Climate normal for this date — 60-year average.
0.12Merrimac, Saturday, 14 November
Climate normal for this date — 60-year average.
0.12Merrimac, Sunday, 15 November
Climate normal for this date — 60-year average.
0.15Merrimac, Monday, 16 November
Climate normal for this date — 60-year average.
0.14Merrimac, Tuesday, 17 November
Climate normal for this date — 60-year average.
0.07Merrimac, Wednesday, 18 November
Climate normal for this date — 60-year average.
0.06Merrimac, Thursday, 19 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 Merrimac, 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 Merrimac, 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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