Penn, MO Climate


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United States / Missouri / No Metro Area / Sullivan County / Penn / Zip Codes
Penn, MO has a mild climate with cold winters and warm summers. Winters tend to be wetter than the warmer months, with average temperatures in the low 30s and highs in the mid 40s. Summers are generally hot and humid, with temperatures reaching into the upper 80s and low 90s during the day. Rainfall is fairly consistent throughout the year, with an average of 40 inches per year. The area also gets quite a bit of snow during the winter months, usually between November and April.

Penn, Missouri gets 41 inches of rain, on average, per year. The US average is 38 inches of rain per year.

Penn averages 18 inches of snow per year. The US average is 28 inches of snow per year.

On average, there are 201 sunny days per year in Penn. The US average is 205 sunny days.

Penn 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 86 degrees
Winter Low: the January low is 14
Rain: averages 41 inches of rain a year
Snow: averages 18 inches of snow a year


Bestplaces Comfort Index

The annual BestPlaces Comfort Index for Penn is 7.1 (10=best), which means it is less comfortable than most places in Missouri.

8.6 Summer - 5.2 Winter
June, September and May are the most pleasant months in Penn, while January and December are the least comfortable months.

  ClimatePenn, MissouriUnited States
  40.7 in.38.1 in.
  18.0 in.27.8 in.
  101.8 days106.2 days
  201 days205 days
  85.9°85.8°
  14.2°21.7°
  7.17
  3.84.3
  1001 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 Penn with an average high temperature of 85.9°, which ranks it as one of the coolest places in Missouri. In Penn, there are 4 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Penn are September, June and May.
In Penn, there are 18.4 days annually when the high temperature is over 90°, which is one of the coolest places in Missouri.
January has the coldest nighttime temperatures for Penn with an average of 14.2°. This is one of the coldest places in Missouri.
In Penn, there are 130.4 days annually when the nighttime low temperature falls below freezing, which is one of the coldest places in Missouri.
In Penn, there are 9.7 days annually when the nighttime low temperature falls below zero°, which is one of the coldest places in Missouri.
The humidity is usually comfortable in Penn but some summer months can be unpleasant. July is the most humid month, though humidity is low for most of the year. The most humid months in Penn are July, August and June.
May is the wettest month in Penn with 5.4 inches of rain, and the driest month is January with 1.2 inches. The wettest season is Autumn with 36% of yearly precipitation and 11% occurs in Spring, which is the driest season. The annual rainfall of 40.7 inches in Penn means that it is drier than most places in Missouri.
May is the rainiest month in Penn with 11.6 days of rain, and January is the driest month with only 5.1 rainy days. There are 101.8 rainy days annually in Penn, 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 18% chance of a rainy day.
An annual snowfall of 18.0 inches in Penn means that it is one of the snowiest places in Missouri. January is the snowiest month in Penn with 5.0 inches of snow, and 6 months of the year have significant snowfall.
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