Andover, IA Climate


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United States / Iowa / Clinton Metro Area / Clinton County / Andover / Zip Codes
Andover, IA has a humid continental climate with hot summers and cold winters. The average temperature in the summer months is around 73°F, while in the winter it drops to an average of 20°F. While temperatures can reach over 100°F in the hottest months of July and August, snowfall is common during winter with an average of about 22 inches throughout the season. There is also plenty of precipitation with an average amount of 36 inches per year.

Andover, Iowa gets 36 inches of rain, on average, per year. The US average is 38 inches of rain per year.

Andover averages 29 inches of snow per year. The US average is 28 inches of snow per year.

On average, there are 196 sunny days per year in Andover. The US average is 205 sunny days.

Andover gets some kind of precipitation, on average, 107 days per year. Precipitation is rain, snow, sleet, or hail that falls to the ground. In order for precipitation to be counted you have to get at least .01 inches on the ground to measure.

Weather Highlights

Summer High: the July high is around 85 degrees
Winter Low: the January low is 13
Rain: averages 36 inches of rain a year
Snow: averages 29 inches of snow a year

Bestplaces Comfort Index

The annual BestPlaces Comfort Index for Andover is 7.0 (10=best), which means it is more comfortable than most places in Iowa.

8.9 Summer - 4.6 Winter
June, September and August are the most pleasant months in Andover, while January and December are the least comfortable months.

  ClimateAndover, IowaUnited States
    Unlock38.1 in.
  29.0 in.  Unlock
    Unlock106.2 days
  196 days  Unlock
  84.7°85.8°
    Unlock21.7°
  7  Unlock
    Unlock4.3
  728 ft.  Unlock
Climate
YOU SHOULD KNOW

Many people confuse weather and climate but they are different. Weather is the conditions of the atmosphere over a short period of time, and climate is how the atmosphere is over long periods of time.

Weather is how the atmosphere is behaving and its effects upon life and human activities. Weather can change from minute-to-minute. Most people think of weather in terms of temperature, humidity, precipitation, cloudiness, brightness, visibility, wind, and atmospheric pressure.

Climate is the description of the long-term pattern of weather in a place. Climate can mean the average weather for a particular region and time period taken over 30 years. Climate is the average of weather over time.

July is the hottest month for Andover with an average high temperature of 84.7°, which ranks it as warmer than most places in Iowa. In Andover, there are 5 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Andover are September, June and August.
In Andover, there are 14.9 days annually when the high temperature is over 90°, which is hotter than most places in Iowa.
January has the coldest nighttime temperatures for Andover with an average of 12.8°. This is warmer than most places in Iowa.
In Andover, there are 133.0 days annually when the nighttime low temperature falls below freezing, which is warmer than most places in Iowa.
In Andover, there are 13.0 days annually when the nighttime low temperature falls below zero°, which is warmer than most places in Iowa.
The humidity is usually comfortable in Andover but some summer months can be sticky or muggy. July is the most humid month, though humidity is low for most of the year. The most humid months are July, August and June.
June is the wettest month in Andover with 4.5 inches of rain, and the driest month is January with 1.4 inches. The wettest season is Autumn with 36% of yearly precipitation and 14% occurs in Spring, which is the driest season. The annual rainfall of 35.8 inches in Andover means that it is about average compared to other places in Iowa.
May is the rainiest month in Andover with 11.0 days of rain, and February is the driest month with only 6.7 rainy days. There are 107.1 rainy days annually in Andover, which is rainier than most places in Iowa. The rainiest season is Summer when it rains 28% of the time and the driest is Spring with only a 22% chance of a rainy day.
An annual snowfall of 29.0 inches in Andover means that it is about average compared to other places in Iowa. January is the snowiest month in Andover with 8.6 inches of snow, and 6 months of the year have significant snowfall.
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