Chilly temperatures to persist through weekend
After a summerlike open to October, the Chicago area has experienced a prolonged spell of below-normal temperatures. Since the 10th, the city has registered only one mild day. Readings are...
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Ask Tom: Has October ever been colder than November, or November colder than December?
Dear Tom, Has there ever been an October that was colder than the following November in Chicago, or a November that was colder than the following December, or a December...
Ask Tom: How do the seasons rank in terms of total precipitation?
Dear Tom, How do the four seasons rank in terms of total precipitation (rain and snow)? I'm guessing spring is first. — Joe Gilleran, Palatine Dear Joe, Using three-month meteorological...
Cool temperatures, showers to linger through weekend
A dreary weather pattern is locking in for the weekend. With a 900-mile-plus swath of east-northeast flow, driven in part by the remnants of Pacific Hurricane Willa moving up the...
Ask Tom: How is snow possible when the temperature is above freezing?
Dear Tom, Last Saturday it was 44 degrees, yet it was snowing. How could this happen? — Tony Tummimaro, Roselle Dear Tony, Temperatures must be 32 degrees or lower in...
Cool temps to continue with increasing clouds and chances of rain
The next few days will see high pressure distancing itself from Chicago — moving off to the east, and an upper level low pressure dominating most of the Midwest and...
Ask Tom: How is meteorology different from climatology?
Dear Tom, How is meteorology different from climatology? Is their usage interchangeable? — Jerry Boyd, Chesterton, Ind. Dear Jerry, Meteorology is the study of the atmosphere: its physics, chemistry and...
Cool weather to continue in area; heavy rains coming to Gulf Coast
Cool temperatures are expected to continue over the Chicago area for what looks like the remainder of October. The upper-air wind flow pattern will be out of the northwest in...
Ask Tom: Are there regulations governing the measurement of wind speed?
Dear Tom, Wind speed seems to be greatly affected by buildings and terrain. Are there recommendations or regulations to govern the taking of this measurement? — Tom Gregg, Niles Dear...
Flow of cold air resumes after one day hiatus in Chicago area
Aided by abundant sunshine and a warming southwest breeze, temperatures Monday rose above 60 degrees for the first time in 12 days. It also marked the first day since Oct....