As of 01:16 EDT

Weather in Merrimac, MA

35°Current weather

Merrimac, Saturday, 24 October, 01:16

Clear. Feels like 35°. High 61°, low 30°.

Pressure30.45 inHg
Wind1.3 mph E
Humidity91%
Visibility6.2 mi
Dew point32°

Monthly outlook for Merrimac, MA: average high 57°, average low 37.4°. That is 0.9° above the climate normal for October. Precipitation is expected on 1 day (about 0.4 inches), against a normal of 5 days and 1.9 inches. The warmest day looks like 30 October (69°), the coolest 24 October (30.5°).

57°/37.4°
Average high / low
+0.9°
Above normal
1 / 5
Wet days / normal
0.4 in
Precipitation this month

Ten-day blocks vs climate normal

PeriodForecast highNormalDifference
24 October – 2 November58.7°56.3°+1.3°
3 November – 12 November54.1°52.6°+0.9°
13 November – 22 Novemberat normal47.4°—

October records over 66 years

84.9°5 October 2007All-time high
25.2°31 October 2020All-time low

Climate normals and records are computed from the nearest reference point — Lawrence (12 mi).

Sun, 2566° / 37°0Clear
66 °Clear

Merrimac, Sunday, 25 October

Clear. High 66°, low 37°.

Pressure30.50 inHg
Wind3.6 mph W
Humidity36%
Visibility6.2 mi
Dew point35°
Mon, 2667° / 39°0Overcast
67 °Overcast

Merrimac, Monday, 26 October

Overcast. High 67°, low 39°.

Pressure30.15 inHg
Wind6.5 mph W
Humidity39%
Visibility6.2 mi
Dew point38°
Tue, 2751° / 36°0Mostly clear
51 °Mostly clear

Merrimac, Tuesday, 27 October

Mostly clear. High 51°, low 36°.

Pressure30.36 inHg
Wind5.1 mph N
Humidity51%
Visibility6.2 mi
Dew point27°
Wed, 2849° / 32°0Clear
49 °Clear

Merrimac, Wednesday, 28 October

Clear. High 49°, low 32°.

Pressure30.53 inHg
Wind6.7 mph S
Humidity55%
Visibility—
Dew point28°
Thu, 2962° / 38°0Clear
62 °Clear

Merrimac, Thursday, 29 October

Clear. High 62°, low 38°.

Pressure30.27 inHg
Wind9.6 mph SW
Humidity64%
Visibility—
Dew point41°
Fri, 3069° / 44°0Mostly clear
69 °Mostly clear

Merrimac, Friday, 30 October

Mostly clear. High 69°, low 44°.

Pressure30.12 inHg
Wind6.9 mph NW
Humidity55%
Visibility—
Dew point44°
Sat, 3155° / 41°0Overcast
55 °Overcast

Merrimac, Saturday, 31 October

Overcast. High 55°, low 41°.

Pressure30.33 inHg
Wind10 mph NE
Humidity71%
Visibility—
Dew point43°
Sun, 0152° / 35°0Mostly clear
52 °Mostly clear

Merrimac, Sunday, 1 November

Mostly clear. High 52°, low 35°.

Pressure30.42 inHg
Wind8.1 mph NE
Humidity63%
Visibility—
Dew point35°
Mon, 0254° / 33°0Overcast
54 °Overcast

Merrimac, Monday, 2 November

Overcast. High 54°, low 33°.

Pressure30.09 inHg
Wind7.6 mph SW
Humidity53%
Visibility—
Dew point31°
Tue, 0360° / 45°0.02Light rain
60 °Light rain

Merrimac, Tuesday, 3 November

Light rain. High 60°, low 45°.

Pressure29.85 inHg
Wind9.4 mph SW
Humidity58%
Visibility—
Dew point39°
Wed, 0450° / 35°0Clear
50 °Clear

Merrimac, Wednesday, 4 November

Clear. High 50°, low 35°.

Pressure29.83 inHg
Wind14.7 mph W
Humidity48%
Visibility—
Dew point28°
Thu, 0551° / 33°0Overcast
51 °Overcast

Merrimac, Thursday, 5 November

Overcast. High 51°, low 33°.

Pressure30.06 inHg
Wind11.2 mph SW
Humidity51%
Visibility—
Dew point27°
Fri, 0649° / 34°0Mostly clear
49 °Mostly clear

Merrimac, Friday, 6 November

Mostly clear. High 49°, low 34°.

Pressure30.27 inHg
Wind10.3 mph NW
Humidity44%
Visibility—
Dew point25°
Sat, 0757° / 34°0.04Light rain
57 °Light rain

Merrimac, Saturday, 7 November

Light rain. High 57°, low 34°.

Pressure30.27 inHg
Wind12.3 mph S
Humidity54%
Visibility—
Dew point32°
Sun, 0857° / 52°0.31Rain
57 °Rain

Merrimac, Sunday, 8 November

Rain. High 57°, low 52°.

Pressure29.74 inHg
Wind7.8 mph S
Humidity96%
Visibility—
Dew point52°
From day 17 onward the outlook is built from 60-year climate statistics
Mon, 0952° / 38°0.1Climate normal
52 °Climate normal

Merrimac, Monday, 9 November

Climate normal for this date — 60-year average.

Average high52°
Average low38°
Average precipitation0.1 in
Chance of precipitation28%
Record high70° (2020)
Record low23° (2019)
Tue, 1052° / 38°0.16Climate normal
52 °Climate normal

Merrimac, Tuesday, 10 November

Climate normal for this date — 60-year average.

Average high52°
Average low38°
Average precipitation0.16 in
Chance of precipitation33%
Record high72° (2020)
Record low24° (2017)
Wed, 1151° / 38°0.11Climate normal
51 °Climate normal

Merrimac, Wednesday, 11 November

Climate normal for this date — 60-year average.

Average high51°
Average low38°
Average precipitation0.11 in
Chance of precipitation37%
Record high73° (2020)
Record low22° (2017)
Thu, 1249° / 37°0.12Climate normal
49 °Climate normal

Merrimac, Thursday, 12 November

Climate normal for this date — 60-year average.

Average high49°
Average low37°
Average precipitation0.12 in
Chance of precipitation38%
Record high73° (2022)
Record low24° (1976)
Fri, 1348° / 35°0.15Climate normal
48 °Climate normal

Merrimac, Friday, 13 November

Climate normal for this date — 60-year average.

Average high48°
Average low35°
Average precipitation0.15 in
Chance of precipitation38%
Record high69° (1964)
Record low16° (2019)
Sat, 1448° / 35°0.12Climate normal
48 °Climate normal

Merrimac, Saturday, 14 November

Climate normal for this date — 60-year average.

Average high48°
Average low35°
Average precipitation0.12 in
Chance of precipitation25%
Record high66° (1973)
Record low15° (1986)
Sun, 1549° / 36°0.12Climate normal
49 °Climate normal

Merrimac, Sunday, 15 November

Climate normal for this date — 60-year average.

Average high49°
Average low36°
Average precipitation0.12 in
Chance of precipitation37%
Record high72° (1993)
Record low20° (2018)
Mon, 1649° / 35°0.15Climate normal
49 °Climate normal

Merrimac, Monday, 16 November

Climate normal for this date — 60-year average.

Average high49°
Average low35°
Average precipitation0.15 in
Chance of precipitation28%
Record high67° (2005)
Record low16° (1967)
Tue, 1747° / 34°0.14Climate normal
47 °Climate normal

Merrimac, Tuesday, 17 November

Climate normal for this date — 60-year average.

Average high47°
Average low34°
Average precipitation0.14 in
Chance of precipitation30%
Record high64° (2006)
Record low11° (1972)
Wed, 1848° / 34°0.07Climate normal
48 °Climate normal

Merrimac, Wednesday, 18 November

Climate normal for this date — 60-year average.

Average high48°
Average low34°
Average precipitation0.07 in
Chance of precipitation23%
Record high67° (1987)
Record low23° (2020)
Thu, 1947° / 33°0.06Climate normal
47 °Climate normal

Merrimac, Thursday, 19 November

Climate normal for this date — 60-year average.

Average high47°
Average low33°
Average precipitation0.06 in
Chance of precipitation20%
Record high64° (1991)
Record low16° (1986)
Fri, 2047° / 33°0.13Climate normal
47 °Climate normal

Merrimac, Friday, 20 November

Climate normal for this date — 60-year average.

Average high47°
Average low33°
Average precipitation0.13 in
Chance of precipitation32%
Record high69° (1991)
Record low12° (1986)
Sat, 2146° / 33°0.13Climate normal
46 °Climate normal

Merrimac, Saturday, 21 November

Climate normal for this date — 60-year average.

Average high46°
Average low33°
Average precipitation0.13 in
Chance of precipitation35%
Record high62° (1991)
Record low18° (1967)
Sun, 2245° / 33°0.15Climate normal
45 °Climate normal

Merrimac, Sunday, 22 November

Climate normal for this date — 60-year average.

Average high45°
Average low33°
Average precipitation0.15 in
Chance of precipitation40%
Record high62° (1999)
Record low7° (2018)

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.