Onslow, IA has a humid continental climate with warm summers and cold winters. The average temperature in the summer is around 72°F (22°C) while the average temperature in the winter months is around 19°F (-7°C). Onslow experiences all four seasons throughout the year, with spring and fall being milder than the summer and winter months. Rainfall is abundant throughout the year, with an annual average of about 30 inches (76 cm). Snowfall is also common in Onslow during the winter months, averaging around 25 inches (64 cm). Overall, Onslow has a pleasant climate throughout most of the year.
Onslow (zip 52321), Iowa gets 37 inches of rain, on average, per year. The US average is 38 inches of rain per year.
Onslow (zip 52321) averages 29 inches of snow per year. The US average is 28 inches of snow per year.
On average, there are 191 sunny days per year in Onslow (zip 52321). The US average is 205 sunny days.
Onslow (zip 52321) gets some kind of precipitation, on average, 103 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 83 degrees
Winter Low: the January low is 9
Rain: averages 37 inches of rain a year
Snow: averages 29 inches of snow a year