St. Thomas, ND Climate


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United States / North Dakota / No Metro Area / Pembina County / St. Thomas / Zip Codes
St. Thomas, North Dakota has a semi-arid climate with hot summers and cold winters. Summer temperatures can reach up to 90°F during the day and fall to around 60°F during the night, while winter temperatures can reach as low as -10°F during the day and -30°F during the night. Precipitation in St. Thomas is spread throughout the year with an average of 18 inches annually spread out over 36 days between April and September. The area experiences strong winds year-round due to its location in a wide valley between two mountains and receives an average of 206 sunny days throughout the year.

St. Thomas, North Dakota gets 20 inches of rain, on average, per year. The US average is 38 inches of rain per year.

St. Thomas averages 37 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. Thomas. The US average is 205 sunny days.

St. Thomas gets some kind of precipitation, on average, 77 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 81 degrees
Winter Low: the January low is -2
Rain: averages 20 inches of rain a year
Snow: averages 37 inches of snow a year


Bestplaces Comfort Index

The annual BestPlaces Comfort Index for St. Thomas is 6.4 (10=best), which means it is about average compared to other places in North Dakota.

9.3 Summer - 3.5 Winter
July, August and June are the most pleasant months in St. Thomas, while January and December are the least comfortable months.

  ClimateSt. Thomas, North DakotaUnited States
  20.0 in.38.1 in.
  36.9 in.27.8 in.
  77.2 days106.2 days
  195 days205 days
  80.9°85.8°
  -1.6°21.7°
  6.47
  2.94.3
  840 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. Thomas with an average high temperature of 80.9°, which ranks it as cooler than most places in North Dakota. In St. Thomas, there are 3 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for St. Thomas are June, August and July.
In St. Thomas, there are 9.9 days annually when the high temperature is over 90°, which is cooler than most places in North Dakota.
January has the coldest nighttime temperatures for St. Thomas with an average of -1.6°. This is colder than most places in North Dakota.
In St. Thomas, there are 175.9 days annually when the nighttime low temperature falls below freezing, which is warmer than most places in North Dakota.
In St. Thomas, there are 47.4 days annually when the nighttime low temperature falls below zero°, which is colder than most places in North Dakota.
Humidity in St. Thomas is generally quite low and comfortable. There are few days during the summer when the humidity becomes unpleasant. The most humid months (but still comfortable) are July, August and June.
June is the wettest month in St. Thomas with 3.6 inches of rain, and the driest month is January with 0.5 inches. The wettest season is Autumn with 47% of yearly precipitation and 8% occurs in Spring, which is the driest season. The annual rainfall of 20.0 inches in St. Thomas means that it is wetter than most places in North Dakota.
June is the rainiest month in St. Thomas with 10.2 days of rain, and February is the driest month with only 4.1 rainy days. There are 77.2 rainy days annually in St. Thomas, which is about average compared to other places in North Dakota. The rainiest season is Autumn when it rains 36% of the time and the driest is Spring with only a 17% chance of a rainy day.
An annual snowfall of 36.9 inches in St. Thomas means that it is less snowy than most places in North Dakota. December is the snowiest month in St. Thomas with 7.9 inches of snow, and 7 months of the year have significant snowfall.
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