Current data Radar/satellite images Forecast
University of Chicago weather
Ryerson Observatory
1100 E. 58th St., Chicago, IL 60637 : 41.8 N - 87.6 W - 690 ft
02/10/10 02:20:10
Sunrise: 06:54 - Sunset: 17:16 - Moon: Waning 14% Full
Click images for past data
Temperature
degC wind-chill low high 		Wind
(km/hr) (mi/hr) high 		Humidity
low high
Today's rain/hr Today's barometric pressure
Today's solar radiation Today's ultraviolet radiation
Current radiation in the basement of the Regenstein Library: 7 μR/hr (info)
Temperature: 26.5 F
Wind Chill: 26.5 F
Heat Index: 26.5 F
Dewpoint: 25.0 F
Humidity: 94 %
Barometer: 29.768  in ~
Wind: NNE  at   2  mph
High Wind: 22 mph at 10:00
Recent Avg Wind: 2 mph
Recent Beaufort Scale: Light Air
Today's Rain: 0.00  in
Rain Rate: 0.00  in/hr
High Rain Rate: 0.00 in/hr at -----
Storm Total: 0.00  in
Monthly Rain: 0.03  in
Yearly Rain (JAN): 0.49  in
Air Density: 1.298  kg/m^3
Est. Cumulus Base: 339  ft
High Temperature: 26.6 F at 19:02
Low Temperature: 21.5 F at 03:00
High Heat Index: 26.6 F at 19:02
Low Wind Chill: 12.4 F at 07:30
High Humidity: 94 % at 17:38
Low Humidity: 71 % at 00:30
High Dewpoint: 25.1 F at 19:02
Low Dewpoint: 16.8 F at 00:30
High Barometer: 30.152 in at 00:30
Low Barometer: 29.766 in at 19:03
Current conditions Almanac Last 24 hours Last 7 days Last 28 days Archives
radar (precipitation) satellite (clouds) S University ave webcam
radar loop
(click to enlarge) 		satellite loop
(click to enlarge) 		S University ave
(click to enlarge)
National Weather Service forecast for Chicago: Last Update: 2:04 am CST Feb 10, 2010
Hazardous Weather Outlook
Winter Storm Warning

Overnight: Snow and widespread blowing snow. Low around 23. Blustery, with a north northwest wind between 20 and 25 mph, with gusts as high as 30 mph. Chance of precipitation is 100%. Total nighttime snow accumulation of 4 to 8 inches possible.
Wednesday: Areas of blowing snow before 9am. Mostly cloudy, with a high near 26. Blustery, with a north northwest wind between 15 and 25 mph, with gusts as high as 35 mph.

Wednesday Night: Partly cloudy, with a low around 15. Northwest wind around 15 mph.

Thursday: Mostly sunny, with a high near 27. West northwest wind between 5 and 10 mph.

Thursday Night: Mostly cloudy, with a low around 12. West wind around 5 mph.

Friday: A 30 percent chance of snow. Cloudy, with a high near 29.

Friday Night: A 20 percent chance of snow. Mostly cloudy, with a low around 23.

Saturday: A chance of snow showers. Mostly cloudy, with a high near 30.

Saturday Night: A chance of snow showers. Mostly cloudy, with a low around 22.

Sunday: A slight chance of snow showers. Mostly cloudy, with a high near 32.

Sunday Night: Partly cloudy, with a low around 21.

Presidents' Day: Mostly sunny, with a high near 32.

Monday Night: Partly cloudy, with a low around 20.

Tuesday: Mostly sunny, with a high near 34.

Hazardous Weather Outlook

Graphical hourly forecast (NWS):
NOAA graphical forecast

Chicago clear sky clock

Weather station and web page maintained by the Ryerson Astronomical Society at the University of Chicago. Send questions and comments to Luitien Pan (weather station chief) or William Vaughan (current RAS president).

Local weather data collected using a Vantage Pro2 weather station from Davis Instruments. Thanks to the SGFC for providing funding to purchase this station.

Radar maps and forecasts are from the National Weather Service. Satellite images are from the Space Science and Engineering Center at UW-Madison. Clear sky clocks are from ClearDarkSky, using data from the Canadian Meteorological Center. Midway webcam images are from NSIT.

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