September The statewide average temperature for September in Illinois was 64.6 degrees, 1.6 cooler-than-normal. This was the first cooler-than-normal month of 2012, and the first cooler-than-normal month since September of 2011. See graph below. The statewide average precipitation for September was 4.9 inches, 1.7 inches wetter-than-normal. This is the first wetter-than-normal month in 2012. See […]
Read More from September in Illinois: Cooler and Wetter Than Normal
The statewide average precipitation for the first half of September was 3.77 inches, which is already above the monthly normal precipitation of 3.24 inches. However, that precipitation was not distributed equally around the state. The figure below shows that large areas across eastern and southern Illinois received 3 to 6 inches of rain (shades of […]
Read More from First Half of September – Wet in Eastern and Southern Illinois
After some sizable rains in August and a nice contribution from TS Isaac over the Labor Day weekend, it should come as no surprise that the US Drought Monitor has revised the drought depiction for Illinois (see Figure). Besides the rainfall, we have seen major gains in soil moisture conditions and stream flow. Large areas […]