September was drier and warmer than average

September in Decorah was drier and somewhat warmer than average, according to Decorah weather observer Richard Bernatz.
 
Bernatz says temperatures in September averaged 62.4 degrees—0.4 degrees warmer than normal.  Temperatures ranged from 86 degrees on September 1st to 32 degrees on September 13th.  Compared with September 2014, 52 Septembers were warmer and 68 Septembers were cooler of the 120 Septembers for which temperature records have been kept.
 
Decorah received 2.69 inches of precipitation during September, according to Bernatz.  He says that's 0.90 inches less than average.  However, for the last twelve months Decorah has a surplus of 2.15 inches of precipitation.