Arnold, Maryland gets 44 inches of rain, on average, per year. The US average is 38 inches of rain per year.
Arnold averages 14 inches of snow per year. The US average is 28 inches of snow per year.
On average, there are 210 sunny days per year in Arnold. The US average is 205 sunny days.
Arnold gets some kind of precipitation, on average, 116 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.
Summer High: the July high is around 87 degrees
Winter Low: the January low is 28
Rain: averages 44 inches of rain a year
Snow: averages 14 inches of snow a year
SPERLING'S COMFORT INDEX
Arnold ranks 55/100 for Comfort Index
A higher score indicates a more comfortable year-round climate. The US average for the comfort index is 54. Our index is based on the total number of days annually within the comfort range of 70-80 degrees, and we also applied a penalty for days of excessive humidity.