Union, MO is located in a humid continental climate zone, with hot summers and cold winters. The average summer temperature is around 80 degrees Fahrenheit, with an average winter temperature of about 35 degrees. Precipitation is fairly average throughout the year, with an annual precipitation of around 43 inches. There are usually 4-5 months of snowfall each year, from late November to early April. During the summer months, Union experiences periods of high humidity due to its location near major rivers and lakes.
Union, Missouri gets 44 inches of rain, on average, per year. The US average is 38 inches of rain per year.
Union averages 13 inches of snow per year. The US average is 28 inches of snow per year.
On average, there are 200 sunny days per year in Union. The US average is 205 sunny days.
Union gets some kind of precipitation, on average, 107 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 22
Rain: averages 44 inches of rain a year
Snow: averages 13 inches of snow a year