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home : local news : local news July 21, 2017

5/9/2017 10:16:00 AM
April rainfall ahead of normal; temps higher than usual
April showers brought May flooding to Crawford County.

About 6.69 inches of rain soaked the county during April, with most of it falling during the last five days of the month. Fields and township roads were submerged and County Road 200E was closed south of Green Briar because flood waters were closing in on the pavement.

The heaviest rainfall of the month dumped 1.58 inches on the county April 28. That was on top of .64 inch that fell during the previous two days. Another 2.08 inches fell over the next two days.

The previous four months were relatively dry. April was the wettest month the county has experienced since 3.54 inches of precipitation fell here in November.

About 4.93 inches of rain was reported during April 2016. The heaviest precipitation of the month resulted in only 1.51 inches April 11. This was on top of .31 inch that fell the previous day.

The average daytime high in April was 68.9 degrees, up from almost 67.5 degrees last year. The warmest temperature of the month both years was 83. This year, it was reported April 14. In 2016, it occurred three days later on the 17th.

Most high temperatures during April were in the 60s and 70s.

The mercury never rose out of the 50s on seven days, but hit the 80s on five others. Last year, most highs were in the 60s, although temperatures never got out the 50s seven times. On the other hand, the temperature was more than 80 six days during the month.

The average overnight low was 46.2, up from almost 43.8 in 2016.

The coldest temperature of the month was 31 on the 8th. This was up from last year's low of 27, reported April 3.

Most April lows were in the 40s. The temperature dropped into the 30s six times during the first half of the month but only fell to freezing or below two times.

The temperature never fell below 62 on the last day of the month.

Last year, most lows during the first half of the month were in the 30s, but by the second half most were in the 50s. Overnight temperatures dipped below freezing five times during the first half of the month, but never fell below 62 on the 26th.

The April record high of 92 was reported April 18, 1958. A low of 18 was reported April 1, 2001, breaking a 62-year record.

The average March high temperature was slightly more than 52.

The hottest temperature of the month was 74, reported March 30. In 2016, the warmest temperature was 79, reported on the 15th.

Most highs during March this year were in the 50s and 60. It warmed up to 70 or warmer four times this year.

The coldest temperature of the month was 14, reported March 15.

The average March low was more than 34.7. Most lows were in the 20s and 30s. Temperatures dipped to freezing or below 15 times.

The hottest March temperature on record is 84, set March 22, 1939. The March record low is 12 below zero, set March 6, 1960.

Only 1.46 inches of rain fell here during March. The heaviest rain dropped .42 inch March 1. About .07 inch of snow fell on the 14th and 15th.

The heaviest March snowfall on record occurred March 7, 1978. Ten inches of new powder fell atop an estimated 7 inches of old accumulation. Strong winds caused much drifting.

The statewide average precipitation for April was 7.01 inches, 3.23 inches above normal and the second wettest April on record, according to Illinois State Climatologist Jim Angel at the University of Illinois' Illinois State Water Survey.

Three of the top five wettest Aprils since the late 1800s have been since 2011, indicating a wetter trend in recent years.

The largest monthly precipitation total for April in Illinois was in Carbondale with 14.41 inches.

Several other sites in southern Illinois had similar amounts, including Bush with 13.63 inches, West Frankfort with 13.35 inches, Kaskaskia with 13.34 inches and Murphysboro with 13.02 inches.

The statewide average temperature for April was 56.4 degrees, 3.8 degrees above average and the 11th warmest April on record. The warmest reading during April was 89 degrees at Kaskaskia on April 20. The coldest reading for the month was 19 degrees at Morrison on April 10.

The January-April period was the warmest on record with a statewide average temperature of 44.5 degrees, 5.4 degrees above normal.

Colder temperatures in the first half of April 2016 were nearly canceled out by warmer temperatures in the second half of the month, Angel said.

The average state temperature last year was 52.7 degrees. Statewide average rainfall was 3.3 inches.

In general, the northern half of the state received 1.5 to 4 inches of rain, while the southern half received 4 to 7 inches of rain.

March also was wetter than normal statewide. Precipitation averaged 3.62 inches across Illinois, .66 inches above normal. March brought a significant amount of snow in some areas.

The driest area was in southeastern Illinois with only 1 to 2 inches of precipitation, which is 1 to 2 inches below normal.

The statewide average temperature for March was 42.3 degrees.

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