Eureka, MO is located in the midwestern region of the United States, giving it a humid continental climate. Summers are usually hot and humid with temperatures reaching into the high 80s and occasionally 90s in July and August. Winters are generally cold with temperatures rarely dropping below freezing. Snowfall is common during the winter months, usually ranging from light dustings to heavy snowfalls throughout December, January, and February. Spring and fall are relatively mild with temperatures between 40-60 degrees. The overall climate can be described as mild but changeable.
Eureka, Missouri gets 44 inches of rain, on average, per year. The US average is 38 inches of rain per year.
Eureka averages 12 inches of snow per year. The US average is 28 inches of snow per year.
On average, there are 203 sunny days per year in Eureka. The US average is 205 sunny days.
Eureka gets some kind of precipitation, on average, 105 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 44 inches of rain a year
Snow: averages 12 inches of snow a year