Illinois State Water Survey Illinois State Climatologist

Widespread, heavy rains possible over next week in Illinois

As of April 25, the statewide average precipitation for Illinois is 2.8 inches, which is 94% of normal. However, we have several opportunities for widespread rains this week and into the weekend, according to the NWS precipitation forecast. The first round of rain on Wednesday and Thursday has potential rainfall amounts of 1 to 2 […]

Read More from Widespread, heavy rains possible over next week in Illinois

Wet August Wraps Up Cool, Wet Summer in Illinois

Highlights: The 12th wettest August in Illinois finishes out the 10th wettest summer on record. While August was slightly warmer than average, the summer was cooler than average. Here are the statistics. August Statistics The statewide average precipitation for August was 5.18 inches, 1.59 inches above average and the 12th wettest on record. The wettest […]

Read More from Wet August Wraps Up Cool, Wet Summer in Illinois

Dryness Across Northern and Central Illinois

After a wet start to the 2014 growing season, we have seen a significant drop in rainfall across parts of northern and central Illinois in the last few weeks. Here is the 30-day rainfall as a percent of average. Areas in the orange are 25 to 75 percent of average while the areas in red […]

Read More from Dryness Across Northern and Central Illinois

Cool Start to August with Rain in Southern and Western Illinois

The statewide average temperature for August so far is 72 degrees, 2 degrees below average. This follows on the heels of the cool July. The NWS forecast show that the mild temperatures will continue this upcoming week with highs in the upper 70s and low 80s in northern Illinois to the low to mid 80s […]

Read More from Cool Start to August with Rain in Southern and Western Illinois