The remote server returned an error: (400) Bad Request.The remote server returned an error: (400) Bad Request. 2025 Compare Climate & Weather: Merrimack, NH vs Longmont, CO

2025 Compare Climate & Weather:
Merrimack, NH vs Longmont, CO

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Highlights

On average, there are 247 sunny days per year in Longmont. Merrimack averages 199 sunny days per year. The US average is 205 sunny days.

Longmont, Colorado gets 14.8 inches of rain, on average, per year. Merrimack, New Hampshire gets 46.1 inches of rain, on average, per year. The US average is 38.1 inches of rain per year.

Longmont averages 36.4 inches of snow per year. Merrimack averages 57.5 inches of snow per year. The US average is 27.8 inches of snow per year.

Weather Highlights

Longmont, Colorado
Summer High: the July high is around 89.1 degrees
Winter Low: the January low is 12.5
Rain: averages 14.8 inches of rain a year
Snow: averages 36.4 inches of snow a year

Merrimack, New Hampshire
Summer High: the July high is around 82.5 degrees
Winter Low: the January low is 12.8
Rain: averages 46.1 inches of rain a year
Snow: averages 57.5 inches of snow a year

BestPlaces Comfort Index
Longmont

The annual BestPlaces Comfort Index for Longmont is 7.2 (10=best), which means it is more comfortable than most places in Colorado.

7.2 / 10
September, June and August are the most pleasant months in Longmont, while December and January are the least comfortable months.

Merrimack

The annual BestPlaces Comfort Index for Merrimack is 6.7 (10=best), which means it is more comfortable than most places in New Hampshire.

6.7 / 10
August, July and June are the most pleasant months in Merrimack, while January and February are the least comfortable months.

Average Monthly High / Low (°F)
MonthMerrimack, NHLongmont, CO
January33° / 13°44° / 13°
February37° / 16°47° / 16°
March45° / 24°55° / 23°
April58° / 34°63° / 31°
May69° / 45°72° / 41°
June77° / 55°83° / 49°
July83° / 60°89° / 55°
August81° / 59°87° / 53°
September73° / 50°79° / 43°
October61° / 38°66° / 32°
November50° / 30°53° / 21°
December38° / 20°44° / 12°
Hot, Freezing, Rainy, Snowy Days: Merrimack / Longmont
MonthHot DaysFreezing DaysRainy DaysSnowy Days
January0 / 030 / 3110 / 47 / 3
February0 / 027 / 279 / 56 / 3
March0 / 025 / 2711 / 65 / 3
April0 / 012 / 1611 / 81 / 2
May1 / 11 / 312 / 100 / 0
June2 / 70 / 012 / 90 / 0
July4 / 160 / 011 / 80 / 0
August3 / 110 / 010 / 80 / 0
September1 / 31 / 29 / 70 / 0
October0 / 09 / 1510 / 60 / 1
November0 / 018 / 2711 / 62 / 3
December0 / 028 / 3110 / 45 / 3
July is the hottest month for Merrimack with an average high temperature of 82.5°, which ranks it as one of the hottest places in New Hampshire. In Merrimack, there are 4 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Merrimack are June, August and July.

July is the hottest month for Longmont with an average high temperature of 89.1°, which ranks it as warmer than most places in Colorado. In Longmont, there are 3 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Longmont are September, June and May.
January has the coldest nighttime temperatures for Merrimack with an average of 12.8°. This is warmer than most places in New Hampshire.

December has the coldest nighttime temperatures for Longmont with an average of 12.2°. This is colder than most places in Colorado.

In Merrimack, there are 10.5 days annually when the high temperature is over 90°, which is one of the hottest places in New Hampshire.

In Longmont, there are 37.5 days annually when the high temperature is over 90°, which is hotter than most places in Colorado.

In Merrimack, there are 149.9 days annually when the nighttime low temperature falls below freezing, which is warmer than most places in New Hampshire.

In Longmont, there are 178.8 days annually when the nighttime low temperature falls below freezing, which is colder than most places in Colorado.

In Merrimack, there are 7.9 days annually when the nighttime low temperature falls below zero°, which is warmer than most places in New Hampshire.

In Longmont, there are 11.2 days annually when the nighttime low temperature falls below zero°, which is colder than most places in Colorado.

October is the wettest month in Merrimack with 4.3 inches of rain, and the driest month is February with 3.1 inches. The wettest season is Summer with 27% of yearly precipitation and 22% occurs in Spring, which is the driest season. The annual rainfall of 46.1 inches in Merrimack means that it is about average compared to other places in New Hampshire.


May is the wettest month in Longmont with 2.3 inches of rain, and the driest month is February with 0.4 inches. The wettest season is Summer with 38% of yearly precipitation and 10% occurs in Spring, which is the driest season. The annual rainfall of 14.8 inches in Longmont means that it is drier than most places in Colorado.

May is the rainiest month in Merrimack with 12.2 days of rain, and September is the driest month with only 9.1 rainy days. There are 125.6 rainy days annually in Merrimack, which is less rainy than most places in New Hampshire. The rainiest season is Summer when it rains 27% of the time and the driest is Spring with only a 23% chance of a rainy day.

May is the rainiest month in Longmont with 9.8 days of rain, and January is the driest month with only 4.2 rainy days. There are 79.2 rainy days annually in Longmont, which is about average compared to other places in Colorado. The rainiest season is Summer when it rains 31% of the time and the driest is Spring with only a 17% chance of a rainy day.

An annual snowfall of 57.5 inches in Merrimack means that it is less snowy than most places in New Hampshire.

An annual snowfall of 36.4 inches in Longmont means that it is less snowy than most places in Colorado.
January is the snowiest month in Merrimack with 17.2 inches of snow, and 6 months of the year have significant snowfall.

March is the snowiest month in Longmont with 7.3 inches of snow, and 7 months of the year have significant snowfall.

DID YOU KNOW?

Many people confuse Weather and Climate, but they are different. Weather refers to the conditions of the atmosphere over a short period of time, while Climate refers to the conditions of the atmosphere over a long period of time.

Weather, more specifically, refers to how the atmosphere behaves and its effects on life and human activities. Most people think of Weather in terms of what can be observed: temperature, humidity, precipitation, and cloudy/sunny conditions. Weather conditions constantly change on a minute-to-minute basis.

Climate is a record of the average weather conditions for a given place over a long period of time, often referred to as Climate Normals. A 30-year period of record is a common requirement to be considered a Climate Normal.

Reviews for Merrimack    2 Reviews
Jill · Sherman Oaks, CA
re:
Over 16 years ago

Hi. I'd like to know if you still feel the same way about living in Broomfield. I went there this past July to check it out (along with Lafayette, Boulder (can't  More

   |    Reply
NC For Me · Apex, NC
re:
Over 16 years ago

Apex is perfect for what you are looking for. It's close enough to Raleigh, Durham, Chapel Hill to find a job and Cary the next town over, is a little more expensive but  More

   |    Reply

Start Your Review of Merrimack

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Reviews for Longmont    2 Reviews
Jill · Sherman Oaks, CA
re:
Over 16 years ago

Hi. I'd like to know if you still feel the same way about living in Broomfield. I went there this past July to check it out (along with Lafayette, Boulder (can't  More

   |    Reply
NC For Me · Apex, NC
re:
Over 16 years ago

Apex is perfect for what you are looking for. It's close enough to Raleigh, Durham, Chapel Hill to find a job and Cary the next town over, is a little more expensive but  More

   |    Reply

Start Your Review of Longmont

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Zips In Merrimack, New Hampshire
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80504, 80501, 80503
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