Weather

by Trent Ford, State Climatologist
ISWS PRI University of Illinois
Spring weather extended yet another week with average temperatures from the low 50s in northern Illinois to low 60s in southern Illinois, between 3 and 8 degrees below normal. While most places stayed above freezing overnight this week, we did wake up to temperatures in the 30s and heavy frost, including lows of 33 degrees in Dixon and in Rockford. The cooler start to May is quite a contrast to what ended up being the warmest April on record statewide last month.…

by Trent Ford, State Climatologist
ISWS PRI University of Illinois
Average temperatures in this first full week of May were actually a little cool, ranging from the high 40s in northern Illinois to the mid-50s in southern Illinois, between 3 and 8 degrees below normal. This followed an April that was a top five warmest on record statewide and felt like a bit of a bait and switch after a taste of summer-like weather last month.…

by Trent Ford, State Climatologist
ISWS PRI University of Illinois
Well, the last week of April was much like the month as a whole. Average temperature ranged from the mid-50s in northern Illinois to high 60s in southern Illinois, between 5 and 10 degrees above average. The month as a whole ended between 4 and 8 degrees above average, likely making April a top 5 warmest on record statewide. With that said, clear skies on a few nights allowed early morning temperatures to regularly dip into the 30s this week,…

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.…