Summer Climate Stats

While meteorological summer (June-August) started on a wet note for much of central and southeast Illinois, conditions quickly dried out in July with only spotty beneficial rains, and little in the way of significant rain fell in August.  In fact, this August was the 2nd driest in Peoria with 0.33", and 4th driest in Springfield with 0.34".  Temperatures overall were below normal, but a couple rounds of significant heat and humidity affected the region in mid-July and in the last week of August.  An unusually cool stretch of weather in late July saw highs and lows around 10 degrees below normal for the last week of the month, and several record lows were set.

Below are daily records set during the summer, along with monthly and seasonal "Top 10s" in bold:

  • Peoria: Record cool high of 69 July 27
  • Peoria: Record low of 51 July 28
  • Peoria: Record high of 96 August 28
  • Peoria: Record high of 99 August 30
  • Peoria: 2nd driest August on record
  • Peoria: 3rd driest summer on record
  • Springfield: Record high of 95 June 12
  • Springfield: Tied record low of 54 July 28
  • Springfield: Record low of 48 July 28 (tied monthly record low)
  • Springfield: Record low of 50 July 29
  • Springfield: Record low of 48 August 14
  • Springfield: Record low of 53 August 17
  • Springfield: 4th driest August on record
  • Lincoln: Record cool high of 69 July 27
  • Lincoln: Record low of 48 July 28
  • Lincoln: 4th coolest July on record
  • Lincoln: Record daily rainfall of 1.67" August 7 

Summer temp departure from normal

Summer precipitation total

Summer precip % of normal

Summer temp. departure from normal

Summer precipitation total

Summer precipitation % of normal

  

City Summer 2013 Rainfall Departure from mean
Lincoln 7.98" -5.32"
Peoria 4.31" -6.31"
Springfield 5.65" -5.99"
Urbana 10.15" -2.82"
Champaign airport (CMI) 8.53" -3.59"
Decatur airport (DEC) 8.06" -3.80"
Mattoon airport (MTO) 15.60" +4.05"
Charleston 12.66" +0.91"
Lawrenceville airport (LWV) 16.61" +4.82"

Bloomington
airport (BMI)

7.55"  
Normal 6.81" -5.06"
Galesburg 6.72" -5.93"
Danville 10.72" -1.98"
Effingham 12.58" +1.17"

Minonk

6.94" -4.09"
Paris 7.21" -5.48"
Tuscola 10.00" -2.46"
Flora 21.43" +10"
Jacksonville 10.64" -1.31"
Beardstown 6.69" -4.05"
Havana 8.94" -3.22"
Morton 6.01" -5.20"

Hoopeston

7.07" -5.76"
Rushville 7.88" -4.75"
Robinson 17.10" +6.59"
Palestine 18.63" +7.14"
Winchester 8.56" -3.76"

Here are the monthly climate summaries for area cities. Only the summaries for Peoria, Springfield and Lincoln are considered "official", meaning they are the station of record for their respective locations. The other summaries are "supplemental", meaning another location in the area is the official climate station for that city.

Climate data for other area cities is available at http://www.nws.noaa.gov/climate/xmacis.php?wfo=ilx



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