Climate data on this page is PRELIMINARY (unofficial). CERTIFIED
(official) climate data is available from the
National Climatic Data Center
Midwestern Regional Climate Center.
Questions? E-mail our
Webmaster, or call (217) 732-3089 (8:30 am - 4:00 pm)
Climate Tables (aka F-6 Forms):
Climate tables are available for the airports at Bloomington, Champaign, Decatur, Lawrenceville, Mattoon, Peoria, and Springfield, as well as the NWS office in Lincoln. Only Peoria, Springfield, and Lincoln are considered to be the "official" climate station for their respective cities. This means that climatological normals and extremes are updated using these sites. The remaining sites are "supplemental", meaning that the climate station for that city is in a different location than the airport.
If the table is not available for the month and year you suggest, try this page:
(click here for information on decoding the F-6 table)
Climate Summaries, Records and Normals:
Daily and monthly records and normals are available here for Lincoln, Peoria, and Springfield; records for Champaign/Urbana are on a separate page (courtesy of the Illinois State Water Survey). Monthly Climate Calendars can also be generated via the Midwestern Regional Climate Center.
For information on many other sites in the area, visit the NOWData page at:
For observed data in near real-time, check out our Central/Southeast Illinois Temperature/Precipitation Table, or the Daily Climate Report for Lincoln, Peoria, and Springfield. Archives of these products are available at http://www.weather.gov/climate/index.php?wfo=ilx
Other specialized information: Heat-Related Statistics for Central and Southeast Illinois, 72-Hour Observation Archive
Maps and Graphs:
Daily Illinois Max/Min Temperature and Precipitation Maps are available for the last 7 days, and contain observed data from Illinois and nearby areas.
Maps from the last month and 12 months are available via the Illinois State Climatologist's webpage at http://www.isws.illinois.edu/atmos/statecli/Current/current.htm . This includes analysis of how the observed conditions compare to climatological normals.
Looking for information on frost and freeze normals? These maps show the average dates of the first autumn freeze and the last spring freeze. The National Climatic Data Center has come up with specific frost and freeze probabilities as well..
Graphs of observed temperature and precipitation are available for several airports around the area.
Severe Weather Climatology:
Information on severe weather reports from central and southeast Illinois is available on our Severe Weather Climatology page. Summaries dating back to 2001 are available.
An interactive database of weather hazards is available from NCDC at: http://www.ncdc.noaa.gov/oa/ncdc.html. Select "Free Data" from the left hand menu, then scroll down to table #4 (Free Data D), then select option #3 (NCDC Storm Events Database).
In addition, the Storm Prediction Center keeps information on severe weather reports from around the nation.