The remote server returned an error: (400) Bad Request.The remote server returned an error: (400) Bad Request. 2025 Compare Climate & Weather: Decorah, IA vs Manchester, CT

2025 Compare Climate & Weather:
Decorah, IA vs Manchester, CT

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Highlights

On average, there are 190 sunny days per year in Manchester. Decorah averages 192 sunny days per year. The US average is 205 sunny days.

Manchester, Connecticut gets 49.2 inches of rain, on average, per year. Decorah, Iowa gets 35.6 inches of rain, on average, per year. The US average is 38.1 inches of rain per year.

Manchester averages 35.6 inches of snow per year. Decorah averages 39.5 inches of snow per year. The US average is 27.8 inches of snow per year.

Weather Highlights

Manchester, Connecticut
Summer High: the July high is around 83.6 degrees
Winter Low: the January low is 16.6
Rain: averages 49.2 inches of rain a year
Snow: averages 35.6 inches of snow a year

Decorah, Iowa
Summer High: the July high is around 82.8 degrees
Winter Low: the January low is 7.8
Rain: averages 35.6 inches of rain a year
Snow: averages 39.5 inches of snow a year

BestPlaces Comfort Index
Manchester

The annual BestPlaces Comfort Index for Manchester is 7.0 (10=best), which means it is about average compared to other places in Connecticut.

7 / 10
June, August and September are the most pleasant months in Manchester, while January and February are the least comfortable months.

Decorah

The annual BestPlaces Comfort Index for Decorah is 6.7 (10=best), which means it is less comfortable than most places in Iowa.

6.7 / 10
June, August and September are the most pleasant months in Decorah, while January and December are the least comfortable months.

Average Monthly High / Low (°F)
MonthDecorah, IAManchester, CT
January26° / 8°35° / 17°
February31° / 12°39° / 20°
March44° / 24°47° / 27°
April59° / 36°60° / 38°
May70° / 47°70° / 47°
June79° / 57°79° / 57°
July83° / 61°84° / 62°
August81° / 59°82° / 61°
September74° / 50°75° / 52°
October61° / 38°63° / 40°
November45° / 26°52° / 33°
December30° / 13°40° / 23°
Hot, Freezing, Rainy, Snowy Days: Decorah / Manchester
MonthHot DaysFreezing DaysRainy DaysSnowy Days
January0 / 031 / 287 / 106 / 5
February0 / 027 / 256 / 95 / 4
March0 / 024 / 228 / 103 / 3
April0 / 011 / 810 / 111 / 1
May0 / 12 / 112 / 120 / 0
June2 / 20 / 011 / 110 / 0
July3 / 50 / 010 / 100 / 0
August2 / 30 / 010 / 90 / 0
September1 / 11 / 09 / 90 / 0
October0 / 09 / 79 / 90 / 0
November0 / 022 / 158 / 102 / 1
December0 / 029 / 267 / 106 / 3
July is the hottest month for Decorah with an average high temperature of 82.8°, which ranks it as cooler than most places in Iowa. In Decorah, there are 5 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Decorah are June, August and September.

July is the hottest month for Manchester with an average high temperature of 83.6°, which ranks it as warmer than most places in Connecticut. In Manchester, there are 5 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Manchester are June, September and August.
January has the coldest nighttime temperatures for Decorah with an average of 7.8°. This is colder than most places in Iowa.

January has the coldest nighttime temperatures for Manchester with an average of 16.6°. This is about average compared to other places in Connecticut.

In Decorah, there are 8.3 days annually when the high temperature is over 90°, which is cooler than most places in Iowa.

In Manchester, there are 11.3 days annually when the high temperature is over 90°, which is hotter than most places in Connecticut.

In Decorah, there are 154.5 days annually when the nighttime low temperature falls below freezing, which is colder than most places in Iowa.

In Manchester, there are 132.5 days annually when the nighttime low temperature falls below freezing, which is about average compared to other places in Connecticut.

In Decorah, there are 23.8 days annually when the nighttime low temperature falls below zero°, which is colder than most places in Iowa.

In Manchester, there are 4.3 days annually when the nighttime low temperature falls below zero°, which is colder than most places in Connecticut.

June is the wettest month in Decorah with 5.1 inches of rain, and the driest month is January with 0.9 inches. The wettest season is Autumn with 40% of yearly precipitation and 9% occurs in Spring, which is the driest season. The annual rainfall of 35.6 inches in Decorah means that it is about average compared to other places in Iowa.


October is the wettest month in Manchester with 4.8 inches of rain, and the driest month is February with 3.1 inches. The wettest season is Autumn with 27% of yearly precipitation and 21% occurs in Spring, which is the driest season. The annual rainfall of 49.2 inches in Manchester means that it is drier than most places in Connecticut.

May is the rainiest month in Decorah with 12.1 days of rain, and February is the driest month with only 5.7 rainy days. There are 106.2 rainy days annually in Decorah, which is rainier than most places in Iowa. The rainiest season is Autumn when it rains 29% of the time and the driest is Spring with only a 19% chance of a rainy day.

May is the rainiest month in Manchester with 11.8 days of rain, and February is the driest month with only 9.1 rainy days. There are 120.0 rainy days annually in Manchester, which is about average compared to other places in Connecticut. The rainiest season is Summer when it rains 27% of the time and the driest is Winter with only a 24% chance of a rainy day.

An annual snowfall of 39.5 inches in Decorah means that it is one of the snowiest places in Iowa.

An annual snowfall of 35.6 inches in Manchester means that it is about average compared to other places in Connecticut.
December is the snowiest month in Decorah with 10.6 inches of snow, and 6 months of the year have significant snowfall.

January is the snowiest month in Manchester with 11.1 inches of snow, and 6 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 Decorah    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 Decorah

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Reviews for Manchester    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 Manchester

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Zips In Decorah, Iowa
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