Bolan, IA Climate


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Bolan, IA has a typical Midwestern climate with hot summers and cold winters. During the summer months, temperatures can reach up to 90°F or higher while winter temperatures can drop into the low teens. The town also receives plenty of precipitation throughout the year, with an average snowfall of 27 inches in the winter months and rainfall averaging around 3 inches per month. Bolan is often affected by humid continental air masses coming from the south and southwest, which leads to frequent storms and thunderstorms during the spring and summer months.

Bestplaces Comfort Index

The annual BestPlaces Comfort Index for Bolan is 6.6 (10=best), which means it is one of the least comfortable places in Iowa.

9.1 Summer - 4 Winter
June, August and July are the most pleasant months in Bolan, while January and December are the least comfortable months.

  ClimateBolan, IowaUnited States
  34.9 in.38.1 in.
  38.1 in.27.8 in.
  100.9 days106.2 days
  184 days205 days
  81.8°85.8°
  6.1°21.7°
  6.67
  3.34.3
  1227 ft.2443 ft.
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 Bolan with an average high temperature of 81.8°, which ranks it as one of the coolest places in Iowa. In Bolan, there are 4 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Bolan are June, August and July.
In Bolan, there are 8.5 days annually when the high temperature is over 90°, which is cooler than most places in Iowa.
January has the coldest nighttime temperatures for Bolan with an average of 6.1°. This is one of the coldest places in Iowa.
In Bolan, there are 160.9 days annually when the nighttime low temperature falls below freezing, which is one of the coldest places in Iowa.
In Bolan, there are 26.6 days annually when the nighttime low temperature falls below zero°, which is one of the coldest places in Iowa.
The humidity is usually comfortable in Bolan 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 Bolan with 5.0 inches of rain, and the driest month is January with 0.8 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 34.9 inches in Bolan means that it is drier than most places in Iowa.
May is the rainiest month in Bolan with 11.4 days of rain, and February is the driest month with only 5.7 rainy days. There are 100.9 rainy days annually in Bolan, which is rainier than most places in Iowa. The rainiest season is Summer when it rains 29% of the time and the driest is Spring with only a 19% chance of a rainy day.
An annual snowfall of 38.1 inches in Bolan means that it is one of the snowiest places in Iowa. December is the snowiest month in Bolan with 9.3 inches of snow, and 6 months of the year have significant snowfall.
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