St. James, MO Climate


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United States / Missouri / Rolla Metro Area / Phelps County / St. James / Zip Codes
St. James, MO has a humid subtropical climate with hot, humid summers and mild winters. During the summer months, temperatures can reach up to 90 degrees Fahrenheit, while winter lows often dip below freezing. Precipitation is abundant throughout the year with the majority of it falling in the form of rain showers or thunderstorms during the warmer months. Summer weather is typically marked by high humidity levels and occasional intense storms that pass quickly through the area.

St. James, Missouri gets 46 inches of rain, on average, per year. The US average is 38 inches of rain per year.

St. James averages 12 inches of snow per year. The US average is 28 inches of snow per year.

On average, there are 195 sunny days per year in St. James. The US average is 205 sunny days.

St. James gets some kind of precipitation, on average, 115 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 88 degrees
Winter Low: the January low is 21
Rain: averages 46 inches of rain a year
Snow: averages 12 inches of snow a year

Bestplaces Comfort Index

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

7.7 Summer - 5.6 Winter
September, May and June are the most pleasant months in St. James, while January and December are the least comfortable months.

  ClimateSt. James, MissouriUnited States
  46.2 in.38.1 in.
  11.6 in.27.8 in.
  114.9 days106.2 days
  195 days205 days
  88.4°85.8°
  20.5°21.7°
  7.27
  4.44.3
  1093 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 St. James with an average high temperature of 88.4°, which ranks it as about average compared to other places in Missouri. In St. James, there are 3 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for St. James are September, May and June.
In St. James, there are 33.0 days annually when the high temperature is over 90°, which is about average compared to other places in Missouri.
January has the coldest nighttime temperatures for St. James with an average of 20.5°. This is about average compared to other places in Missouri.
In St. James, there are 108.9 days annually when the nighttime low temperature falls below freezing, which is colder than most places in Missouri.
In St. James, there are 3.8 days annually when the nighttime low temperature falls below zero°, which is colder than most places in Missouri.
The humidity can be uncomfortably heavy or close in St. James 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 St. James.
May is the wettest month in St. James with 5.3 inches of rain, and the driest month is February with 2.3 inches. The wettest season is Summer with 29% of yearly precipitation and 17% occurs in Spring, which is the driest season. The annual rainfall of 46.2 inches in St. James means that it is wetter than most places in Missouri.
May is the rainiest month in St. James with 12.6 days of rain, and September is the driest month with only 7.9 rainy days. There are 114.9 rainy days annually in St. James, which is one of the rainiest 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 11.6 inches in St. James means that it is less snowy than most places in Missouri. January is the snowiest month in St. James with 3.2 inches of snow, and 5 months of the year have significant snowfall.
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