August precipitation, temperatures above normal

August precipitation, temperatures above normal

CHAMPAIGN — For the 11th consecutive month, temperatures in Champaign-Urbana were above normal.

But for the first month since January, precipitation also was above normal.

The overall mean temperature for August in Champaign-Urbana was 74.4 degrees, 1 degree above normal, said state climatologist Jim Angel of the Illinois State Water Survey.

The average high last month was 87.1 degrees, 3.4 degrees above normal. The average low in August was 61.2 degrees, 1.9 degrees below normal.

The highest reading in Champaign-Urbana for the month was 101 degrees on Aug. 2. The lowest reading was 53 on Aug. 18.

There were 12 days with readings of 90 degrees or more. The August normal is 5.1 days. So far this year there have been 54 days of 90 degrees or more; the record is 56, and Angel said September typically has 2.4 days with 90-degree readings.

So far this year, Angel said, Champaign-Urbana temperatures are 5.7 degrees above normal.

August rainfall in Champaign-Urbana — as of 8 a.m. Friday — totaled 5.56 inches, which is 1.63 inches above normal. It was the 18th wettest August on record, Angel said.

Local precipitation so far this year totals 20.15 inches, 8.43 inches below normal.

Statewide, the average temperature for August was 73.5 degrees, just 0.1 degree below normal.

The average precipitation in Illinois last month was 3.4 inches, which is 95 percent of normal. Northern and southern parts of Illinois had 3 to 5 inches of rain, while some areas of East Central Illinois had more than 6 inches. Parts of northern and western Illinois received less than 2.5 inches.

The largest rainfall total in the state was at Grayville in southeast Illinois, with 10.69 inches. In second place was Hoopeston with 8.33 inches.

The statewide average temperature for the three summer months of June, July, and August was 76.1 degrees, 2.6 degrees above normal. It was the eighth warmest summer on record in Illinois. The warmest was 1936 with 78.6 degrees.

The statewide average precipitation for June through August was 6.64 inches, 5.21 inches below normal. It was the sixth driest summer on record in Illinois. The driest was 1988 with 6.17 inches.

So far this year the statewide average temperature is 59 degrees, 4.2 degrees above normal. It is the warmest January through August period on record. No. 2 was 1921 with 58.3 degrees.

The statewide average precipitation for January through August is 17.45 inches, 7.31 inches below normal. It was the fourth driest January-August on record. The driest was 1936 with 14.95 inches, followed by 1988 with 17.12 inches, and 1934 with 17.41 inches.

"At the end of August, 99 percent of the state was still in some stage of drought. However, the milder August weather kept many areas from getting significantly worse," Angel said.

2012 precipitation in Champaign-Urbana

 

MonthActualNormalDifferenceJanuary3.172.051.12February1.132.13-1March1.632.86-1.23April2.663.68-1.02May3.114.89-1.78June2.284.34-2.06July0.614.7-4.09Aug5.563.931.63Totals20.1528.58-8.43

 

(Measured in inches)All totals as of 8 a.m. last day of the month.Average precipitation for September: 3.13 inchesAverage annual precipitation through September: 31.71 inches Source: Illinois State Water Survey

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