Weather Talk: February is usually the driest month of the year
February is the driest month of the year based on average precipitation (rain plus melted snow).
Part of the reason is that there are fewer days in the month. But the difference between February precipitation (0.59 inch), January precipitation (0.71 inch) and December precipitation (0.83 inch) cannot be accounted for by the three extra days. It usually just doesn't snow as much in February.
Historically, there have usually been fewer big snows and blizzards in February than in any of the other snowy months. Overall, winter is the driest season because snow does not contain very much water.
Snow accumulation is usually about 5 to 10 percent water and 90 to 95 percent air. We get an average of about 50 inches of snow a winter, but winter precipitation, even with a few rainfalls mixed in, averages around 3 inches.