A Very Windy January, 2014
Below is a chart of the average wind speed at the Rapid City Airport for the month of January from 1970 through 2014. This January’s average wind speed was 13.6 mph, which just exceeded the 13.5 mph average wind speed in January of 1975.
January 2014 was also very windy with regard to maximum wind gust speed. This is a chart of the number of days in January that had wind gusts of at least 50 mph. There were 11 days this past January. The previous best was 7 days in January of 2007. (Gust data only back to 1987).