Herculaneum, MO has a humid subtropical climate. Summers tend to be hot and humid, with temperatures reaching highs in the mid-80s Fahrenheit (around 30 degrees Celsius). Winters are typically mild with lows hovering around freezing and occasional snowfall. Rainfall is spread throughout the year, with the heaviest rainfall occurring during the spring and summer months. The area also experiences frequent storms, often accompanied by strong winds and intense lightning. Overall, Herculaneum enjoys a pleasant climate throughout the year with warm summers and fairly mild winters.
Herculaneum (zip 63048), Missouri gets 43 inches of rain, on average, per year. The US average is 38 inches of rain per year.
Herculaneum (zip 63048) averages 10 inches of snow per year. The US average is 28 inches of snow per year.
On average, there are 202 sunny days per year in Herculaneum (zip 63048). The US average is 205 sunny days.
Herculaneum (zip 63048) gets some kind of precipitation, on average, 101 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 22
Rain: averages 43 inches of rain a year
Snow: averages 10 inches of snow a year