Summary
May: Rainfall was generally below normal. The only significant area of above normal rainfall occurred over McLean county. The highest rainfall deficits were recorded south of I-70, from Newton south to Olney. Temperatures for the month were 1-3 degrees below normal.
Spring season (March through May): Rainfall ranged from below normal northwest of I-55, to above normal for many locations southeast of I-55. Areas south of I-70 saw mostly below normal rainfall for the season. Temperatures were a few degrees above normal across the area.
May Rainfall and Temperature Maps
Climate Data - May
The table below summarizes May rainfall and temperature, and departure from normal for selected cities across central and southeast Illinois. Data from Peoria and Springfield are from ASOS sites, while others are from NWS Cooperative Observers.
| Site |
Rainfall |
Departure from Normal | Average Temperature |
Departure from Normal |
|
Charleston |
2.94" | -1.68" | 63.6 | -0.6 |
| Danville |
2.58" |
-2.16" | 62.0 | -1.1 |
| Decatur |
3.11" |
-1.68" | 61.5 | -2.7 |
| Effingham |
4.00" |
N/A | 63.2 | N/A |
|
Flora |
3.47" | -1.75" | 63.6 | -0.9 |
| Galesburg |
4.82" |
+0.37" | 61.1 | -0.3 |
|
Havana |
5.23" | +0.44" | N/A | N/A |
|
Jacksonville #2 |
2.61" | -1.90" | 62.5 | -1.4 |
| Lincoln |
3.17" |
-0.99" | 61.9 | -1.1 |
|
Normal |
6.39" |
+1.75" | 60.1 | -1.0 |
|
Olney |
2.07" | -3.77" | 59.9 | -3.9 |
|
Paris |
4.55" | -1.48" | 60.5 | -2.5 |
| Peoria |
2.82" |
-1.51" | 62.6 | -0.2 |
| Springfield |
2.40" |
-1.84" | 64.0 | +0.3 |
|
Tuscola |
3.84" | -0.34" | 61.8 | -1.4 |
| Urbana |
3.79" |
-1.10" | 61.9 | -0.6 |
Links below are the May and Spring Season 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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