by Trent Ford, State Climatologist
ISWS PRI University of Illinois
Our warm spring continued this week, as average temperatures ranged from the high 50s in northern Illinois to the mid-60s in southern Illinois, 10 to 15 degrees above normal. The first half of April has been extremely warm, in fact the second warmest start to April on record in Peoria, Springfield, and St. Louis. Our recent warmth has continued a longer trend from March, making this year the warmest start to spring since 2012 statewide.…