As of 04:08 EST

Weather in Merrimack, NH

40°Current weather

Merrimack, Thursday, 12 November, 04:08

Overcast. Feels like 40°. High 49°, low 39°.

Pressure29.80 inHg
Wind1 mph NE
Humidity87%
Visibility6.2 mi
Dew point37°

Monthly outlook for Merrimack, NH: average high 52.4°, average low 38°. That is 4° above the climate normal for November. Precipitation is expected on 4 days (about 0.9 inches), against a normal of 5 days and 2.0 inches. The warmest day looks like 25 November (63.2°), the coolest 27 November (30.3°).

52.4°/38°
Average high / low
+4°
Above normal
4 / 5
Wet days / normal
0.9 in
Precipitation this month

Ten-day blocks vs climate normal

PeriodForecast highNormalDifference
12 November – 21 November52.1°46.1°+3.4°
22 November – 1 December52.7°43.3°+5.2°
2 December – 11 Decemberat normal39°—

November records over 66 years

75.2°6 November 2024All-time high
4.5°22 November 2018All-time low

Climate normals and records are computed from the nearest reference point — Bedford (6 mi).

Fri, 1344° / 33°0.06Light rain
44 °Light rain

Merrimack, Friday, 13 November

Light rain. High 44°, low 33°.

Pressure29.59 inHg
Wind7.3 mph N
Humidity64%
Visibility6.2 mi
Dew point26°
Sat, 1444° / 32°0Overcast
44 °Overcast

Merrimack, Saturday, 14 November

Overcast. High 44°, low 32°.

Pressure29.68 inHg
Wind9.1 mph NW
Humidity60%
Visibility6.2 mi
Dew point27°
Sun, 1545° / 36°0Overcast
45 °Overcast

Merrimack, Sunday, 15 November

Overcast. High 45°, low 36°.

Pressure29.97 inHg
Wind13 mph NW
Humidity58%
Visibility6.2 mi
Dew point26°
Mon, 1647° / 35°0Mostly clear
47 °Mostly clear

Merrimack, Monday, 16 November

Mostly clear. High 47°, low 35°.

Pressure30.30 inHg
Wind10.5 mph NW
Humidity63%
Visibility—
Dew point31°
Tue, 1754° / 33°0Overcast
54 °Overcast

Merrimack, Tuesday, 17 November

Overcast. High 54°, low 33°.

Pressure30.33 inHg
Wind7.4 mph W
Humidity54%
Visibility—
Dew point30°
Wed, 1857° / 35°0Clear
57 °Clear

Merrimack, Wednesday, 18 November

Clear. High 57°, low 35°.

Pressure30.30 inHg
Wind8.1 mph W
Humidity51%
Visibility—
Dew point31°
Thu, 1960° / 39°0Clear
60 °Clear

Merrimack, Thursday, 19 November

Clear. High 60°, low 39°.

Pressure30.33 inHg
Wind4.3 mph NW
Humidity52%
Visibility—
Dew point34°
Fri, 2059° / 40°0Overcast
59 °Overcast

Merrimack, Friday, 20 November

Overcast. High 59°, low 40°.

Pressure30.24 inHg
Wind6.4 mph SW
Humidity45%
Visibility—
Dew point30°
Sat, 2162° / 42°0Overcast
62 °Overcast

Merrimack, Saturday, 21 November

Overcast. High 62°, low 42°.

Pressure30.06 inHg
Wind9.4 mph NW
Humidity55%
Visibility—
Dew point39°
Sun, 2255° / 43°0Overcast
55 °Overcast

Merrimack, Sunday, 22 November

Overcast. High 55°, low 43°.

Pressure30.21 inHg
Wind6 mph SE
Humidity77%
Visibility—
Dew point44°
Mon, 2360° / 44°0.01Light rain
60 °Light rain

Merrimack, Monday, 23 November

Light rain. High 60°, low 44°.

Pressure29.97 inHg
Wind9.2 mph SW
Humidity75%
Visibility—
Dew point45°
Tue, 2453° / 46°0.04Light rain
53 °Light rain

Merrimack, Tuesday, 24 November

Light rain. High 53°, low 46°.

Pressure29.97 inHg
Wind3.8 mph SW
Humidity85%
Visibility—
Dew point48°
Wed, 2563° / 45°0.06Light rain
63 °Light rain

Merrimack, Wednesday, 25 November

Light rain. High 63°, low 45°.

Pressure29.88 inHg
Wind11.7 mph S
Humidity83%
Visibility—
Dew point48°
Thu, 2644° / 32°0.48Rain
44 °Rain

Merrimack, Thursday, 26 November

Rain. High 44°, low 32°.

Pressure29.91 inHg
Wind13.7 mph NW
Humidity56%
Visibility—
Dew point26°
Fri, 2742° / 30°0Clear
42 °Clear

Merrimack, Friday, 27 November

Clear. High 42°, low 30°.

Pressure30.45 inHg
Wind9.5 mph W
Humidity35%
Visibility—
Dew point11°
From day 17 onward the outlook is built from 60-year climate statistics
Sat, 2844° / 31°0.18Climate normal
44 °Climate normal

Merrimack, Saturday, 28 November

Climate normal for this date — 60-year average.

Average high44°
Average low31°
Average precipitation0.18 in
Chance of precipitation38%
Record high65° (1990)
Record low13° (1996)
Sun, 2943° / 30°0.07Climate normal
43 °Climate normal

Merrimack, Sunday, 29 November

Climate normal for this date — 60-year average.

Average high43°
Average low30°
Average precipitation0.07 in
Chance of precipitation30%
Record high63° (1990)
Record low8° (2014)
Mon, 3042° / 29°0.11Climate normal
42 °Climate normal

Merrimack, Monday, 30 November

Climate normal for this date — 60-year average.

Average high42°
Average low29°
Average precipitation0.11 in
Chance of precipitation32%
Record high62° (2006)
Record low15° (1967)
Tue, 0142° / 29°0.13Climate normal
42 °Climate normal

Merrimack, Tuesday, 1 December

Climate normal for this date — 60-year average.

Average high42°
Average low29°
Average precipitation0.13 in
Chance of precipitation33%
Record high64° (2001)
Record low11° (1989)
Wed, 0242° / 28°0.12Climate normal
42 °Climate normal

Merrimack, Wednesday, 2 December

Climate normal for this date — 60-year average.

Average high42°
Average low28°
Average precipitation0.12 in
Chance of precipitation33%
Record high63° (2006)
Record low7° (1967)
Thu, 0341° / 28°0.15Climate normal
41 °Climate normal

Merrimack, Thursday, 3 December

Climate normal for this date — 60-year average.

Average high41°
Average low28°
Average precipitation0.15 in
Chance of precipitation38%
Record high63° (2009)
Record low5° (1976)
Fri, 0440° / 26°0.11Climate normal
40 °Climate normal

Merrimack, Friday, 4 December

Climate normal for this date — 60-year average.

Average high40°
Average low26°
Average precipitation0.11 in
Chance of precipitation23%
Record high64° (1982)
Record low6° (1989)
Sat, 0538° / 26°0.13Climate normal
38 °Climate normal

Merrimack, Saturday, 5 December

Climate normal for this date — 60-year average.

Average high38°
Average low26°
Average precipitation0.13 in
Chance of precipitation32%
Record high62° (2001)
Record low4° (2025)
Sun, 0640° / 26°0.15Climate normal
40 °Climate normal

Merrimack, Sunday, 6 December

Climate normal for this date — 60-year average.

Average high40°
Average low26°
Average precipitation0.15 in
Chance of precipitation42%
Record high66° (2001)
Record low8° (1971)
Mon, 0739° / 25°0.13Climate normal
39 °Climate normal

Merrimack, Monday, 7 December

Climate normal for this date — 60-year average.

Average high39°
Average low25°
Average precipitation0.13 in
Chance of precipitation37%
Record high66° (1998)
Record low2° (1964)
Tue, 0836° / 23°0.09Climate normal
36 °Climate normal

Merrimack, Tuesday, 8 December

Climate normal for this date — 60-year average.

Average high36°
Average low23°
Average precipitation0.09 in
Chance of precipitation28%
Record high54° (2022)
Record low-8° (1964)
Wed, 0937° / 22°0.17Climate normal
37 °Climate normal

Merrimack, Wednesday, 9 December

Climate normal for this date — 60-year average.

Average high37°
Average low22°
Average precipitation0.17 in
Chance of precipitation38%
Record high56° (1991)
Record low3° (1968)
Thu, 1038° / 24°0.08Climate normal
38 °Climate normal

Merrimack, Thursday, 10 December

Climate normal for this date — 60-year average.

Average high38°
Average low24°
Average precipitation0.08 in
Chance of precipitation37%
Record high59° (2023)
Record low1° (1968)
Fri, 1138° / 24°0.17Climate normal
38 °Climate normal

Merrimack, Friday, 11 December

Climate normal for this date — 60-year average.

Average high38°
Average low24°
Average precipitation0.17 in
Chance of precipitation35%
Record high58° (1966)
Record low-3° (1977)

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 Merrimack, NH 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 Merrimack, NH 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.