University of Chicago weather
Ryerson Observatory
1100 E. 58th St., Chicago, IL 60637 : 41.8 N - 87.6 W - 690 ft
10/11/08 17:10:10
Sunrise: 06:59 - Sunset: 18:16 - Moon: Waxing 88% Full

Current local conditions:

Temperature: 70.2 F
Wind Chill: 70.2 F
Heat Index: 70.2 F
Wind: E  at   4  mph
High Wind: 14 mph at 01:59
Recent Avg Wind: 3 mph
Recent Beaufort Scale: Light Air
Humidity: 66 %
Today's Rain: 0.00  in
Rain Rate: 0.00  in/hr
Current radiation in the basement of the Regenstein Library: 9 μR/hr (info)

Past records for this station:

National Weather Service forecast for Chicago:

Last Update: 329 PM CDT SAT OCT 11 2008
Tonight...Clear. Lows in the upper 50s. Southeast winds 5 to 10 mph.

Sunday...Mostly sunny. Unseasonably warm. Highs in the lower 80s...but cooler near the lake. South winds 10 to 15 mph.

Sunday Night...Mostly clear in the evening then becoming partly cloudy. Lows around 60. South winds around 10 mph.

Columbus Day...Partly sunny. Continued unseasonably warm. Highs in the upper 70s. South winds 10 to 15 mph.

Monday Night...Mostly cloudy with a 40 percent chance of showers and thunderstorms. Lows in the upper 50s. South winds 10 to 15 mph.

Tuesday...Mostly cloudy with chance of showers and isolated thunderstorms. Highs in the upper 60s. Chance of precipitation 50 percent.

Tuesday Night...Mostly cloudy with a 40 percent chance of showers. Lows in the upper 40s.

Wednesday...Partly sunny with a 30 percent chance of showers. Highs in the mid 60s.

Wednesday Night And Thursday...Partly cloudy. Lows in the mid 40s. Highs in the lower 60s.

Thursday Night...Partly cloudy with a 20 percent chance of showers. Lows in the upper 40s.

Friday Through Saturday...Partly cloudy. Highs around 60. Lows in the mid 40s.





Chicago clear sky clock in ascii-art: 
         111111112222|#         11111111112222|#       
    Time 234567890123|U12345678901234567890123|M1234567
  cloud2 ...........,|:o:..,..,,...,:##:,,::oo|oooOOo#O
  trans2 ,,:::::::::O|O#o:ooooooo:::###::o####|########
 seeing2       :::,,,|:::::::::         ::::::|::::::::
   wind2 ,,,:::::::::|::oo:::::::,,:::::::oooo|ooooo:::
    hum2 ooooooo:::,,|,,,,,....,::oooooooooooo|ooooooo:
   temp2 ,,,,,,,,,,,,|,,,,,,,,,,,,,,,,,,,,,,,,|,,,,,,,,

Key: larger character = worse for astronomy

Weather station and web page maintained by the Ryerson Astronomical Society at the University of Chicago. Send questions and comments to Joseph Cottral (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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