Lewis, MO County has a humid continental climate. It experiences warm to hot summers with average high temperatures reaching into the low 90s in July. Winters are cold and snowy with average low temperatures dropping to the mid teens. The area receives an average of 36 inches of rain annually, and tends to see about 30 days of precipitation each year. Snowfall amounts can range dramatically from year to year, but an average of 26 inches is normal for the region. Overall, Lewis County enjoys a mild climate with four distinct seasons throughout the year.
Lewis County, Missouri gets 39 inches of rain, on average, per year. The US average is 38 inches of rain per year.
Lewis County averages 17 inches of snow per year. The US average is 28 inches of snow per year.
On average, there are 196 sunny days per year in Lewis County. The US average is 205 sunny days.
Lewis County gets some kind of precipitation, on average, 93 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 87 degrees
Winter Low: the January low is 18
Rain: averages 39 inches of rain a year
Snow: averages 17 inches of snow a year