Cool Valley, MO Climate


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United States / Missouri / St. Louis Metro Area / St. Louis County / Cool Valley / Zip Codes
Cool Valley, MO is blessed with a temperate climate that is a mix of continental and humid subtropical climates. Summers are warm and muggy with average daytime temperatures in the mid 80s Fahrenheit (30 Celsius) while winters are mild to cool, with highs around the 40s Fahrenheit (4 Celsius). Precipitation is spread throughout the year but primarily falls during spring and early summer, while snowfall can occur in winter. The weather patterns in Cool Valley have made it a great place to live for those seeking a mild climate and plenty of sunshine.

Cool Valley, Missouri gets 43 inches of rain, on average, per year. The US average is 38 inches of rain per year.

Cool Valley averages 14 inches of snow per year. The US average is 28 inches of snow per year.

On average, there are 205 sunny days per year in Cool Valley. The US average is 205 sunny days.

Cool Valley gets some kind of precipitation, on average, 102 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 89 degrees
Winter Low: the January low is 23
Rain: averages 43 inches of rain a year
Snow: averages 14 inches of snow a year

Bestplaces Comfort Index

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

7.2 Summer - 5.7 Winter
September, May and October are the most pleasant months in Cool Valley, while January and December are the least comfortable months.

  ClimateCool Valley, MissouriUnited States
  43.1 in.38.1 in.
  13.9 in.27.8 in.
  102.2 days106.2 days
  205 days205 days
  88.9°85.8°
  23.1°21.7°
  7.27
  4.34.3
  594 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 Cool Valley with an average high temperature of 88.9°, which ranks it as warmer than most places in Missouri. In Cool Valley, there are 2 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Cool Valley are May, September and June.
In Cool Valley, there are 38.2 days annually when the high temperature is over 90°, which is hotter than most places in Missouri.
January has the coldest nighttime temperatures for Cool Valley with an average of 23.1°. This is warmer than most places in Missouri.
In Cool Valley, there are 87.1 days annually when the nighttime low temperature falls below freezing, which is one of the warmest places in Missouri.
In Cool Valley, there are 1.9 days annually when the nighttime low temperature falls below zero°, which is warmer than most places in Missouri.
The humidity can be uncomfortably heavy or close in Cool Valley during the summer months. July is the most humid month, though humidity is low for most of the year. July, August and June are the three most humid months in Cool Valley.
May is the wettest month in Cool Valley with 4.9 inches of rain, and the driest month is February with 2.4 inches. The wettest season is Summer with 28% of yearly precipitation and 18% occurs in Spring, which is the driest season. The annual rainfall of 43.1 inches in Cool Valley means that it is about average compared to other places in Missouri.
May is the rainiest month in Cool Valley with 11.0 days of rain, and September is the driest month with only 7.0 rainy days. There are 102.2 rainy days annually in Cool Valley, which is rainier than most places in Missouri. The rainiest season is Summer when it rains 30% of the time and the driest is Spring with only a 22% chance of a rainy day.
An annual snowfall of 13.9 inches in Cool Valley means that it is about average compared to other places in Missouri. January is the snowiest month in Cool Valley with 4.4 inches of snow, and 5 months of the year have significant snowfall.
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