Fourth Warmest Start to September and Warmest Week of 2015

Areas of Severe Thunderstorms and Heavy Rain Possible through the Weekend

There will be daily chances for scattered thunderstorms across portions of the Central and Eastern U.S. through the weekend, with severe thunderstorms possible in the northern Plains and Upper Midwest. Potential severe storm hazards may include large hail, damaging winds, and a few tornadoes. Storms could also produce heavy rain that may lead to isolated instances of flash flooding. Read More >

PUBLIC INFORMATION STATEMENT NATIONAL WEATHER SERVICE CHICAGO IL 743 PM CDT MON SEP 7 2015 ...FOURTH WARMEST START TO SEPTEMBER AND WARMEST WEEK OF 2015... THE FIRST WEEK OF SEPTEMBER BROUGHT HOT AND OFTEN HUMID CONDITIONS TO MUCH OF THE MIDWEST INCLUDING NORTHERN ILLINOIS AND NORTHWEST INDIANA. FOR BOTH CHICAGO AND ROCKFORD...SEPTEMBER 1ST-7TH WAS THE WARMEST WEEK OF 2015. THIS IS HIGHLY UNCOMMON FOR THE WARMEST WEEK TO FALL OUTSIDE OF THE MONTHS OF JUNE-AUGUST. IN FACT...THE WARMEST WEEK OF THE YEAR HAS NOT FELL IN SEPTEMBER SINCE 1990 FOR BOTH CITIES. THIS ALSO WAS THE 4TH WARMEST FIRST WEEK OF SEPTEMBER ON RECORD FOR BOTH CHICAGO AND ROCKFORD. WARMEST FIRST 7 DAYS OF SEPTEMBER FOR CHICAGO: RANK YEAR AVG TEMP ---------------------- 1. 1960 83.6 2. 1922 82.4 3. 1912 79.7 4. 2015 79.6 5. 1971 79.4 1925 79.4 RECORDS FOR CHICAGO DATE BACK TO 1872. WARMEST FIRST 7 DAYS OF SEPTEMBER FOR ROCKFORD: RANK YEAR AVG TEMP ---------------------- 1. 1922 82.4 2. 1960 80.9 3. 1913 80.0 4. 2015 78.9 5. 1971 78.7 RECORDS FOR ROCKFORD DATE BACK TO 1905. REPRIEVE FROM THE LATE SUMMER HEAT IS ON THE WAY AS COOLER WEATHER IS FORECAST FOR THE REMAINDER OF THE WEEK...WITH EVEN BELOW NORMAL TEMPERATURES EXPECTED FRIDAY AND SATURDAY. $$ MTF