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Archives for Chicago's hourly weather data updated 24-48 hours after end of each day. MOBILE CHGOWX.COM ...
Weather conditions on bar directly above are near Lakefront. Weather conditions with Moon are O'Hare (official).

Thursday, September 30, 2010

SEPTEMBER CHICAGO NORMALS FOR TEMPERATURE, PRECIPITATION, SNOWFALL (1981-2010)

JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC

Day of MonthHighLowAverageHDDCDDPrecipitation
1806070160.12
2806070160.12
3796069150.11
4795969150.12
5795969150.11
6785968150.12
7785868150.11
8785868240.11
9785767240.11
10775767240.10
11775667240.11
12765666240.10
13765666330.11
14765565330.10
15755565330.10
16755465330.11
17755464330.10
18745364420.10
19745363420.11
20735263420.11
21735262520.11
22725162520.11
23725161520.10
24725161620.11
25715061610.11
26715060610.11
27704960710.10
28704959710.09
29694859710.10
30694858810.09
MONTH74.854.364.6105923.2






HDD = A Heating Degree Day represents the number of degree(s) that the mean temperature for the day is below 65 degrees during a day.

CDD = A Cooling Degree Day represents the number of degree(s) that the mean temperature for the day is above 65 degrees during a day.

CHICAGO O'HARE CURRENT AND HISTORY (3-DAY) ... | NWS Chicago Office OBSERVED WEATHER REPORTS

Chicago Temperature and Precipitation Records for September

JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC

SEPTEMBER RECORD HIGHS…LOWS…AND PRECIPITATION FOR CHICAGO
DayRecord
High
Temp/Year
Record
Low
Max/Year
Record
High
Min/Year
Record
Low Temp/Year
Record Precipitation
Daily/Year
1101/195362/190978/191245/19492.92/1977
2101/195361/197478/191344/19461.55/2010
397/195359/189175/197347/19741.92/1961
495/198360/190274/197145/19972.95/1894
598/189962/190977/191244/19881.89/1971
697/196061/188578/188142/19841.53/1894
7100/196061/192478/192242/19861.79/1980
896/196054/188376/192243/19861.65/1885
995/198356/188375/191243/19863.44/1875
1095/201353/191777/201344/19432.48/1922
1195/195256/201473/196142/19932.37/2000
1296/195253/190272/193144/20142.43/1961
1398/193955/188075/192739/18906.64/2008
1499/193954/192376/193940/19852.42/1896
1599/193955/199375/192739/20071.38/1936
1692/195556/195972/190737/19841.16/1980
1793/195551/198171/190637/19842.42/1927
1894/195554/190171/196540/19031.50/1907
1993/195552/193874/190840/19911.72/2001
2092/201752/190173/193136/19911.33/2001
2194/201750/199576/193139/19911.67/1947
2294/201749/197473/189532/19951.73/2006
2395/201751/192872/201729/19952.09/1961
2493/201751/194271/193035/19891.85/1977
2592/201746/194272/192030/19421.85/1961
2692/201747/194271/197335/19282.71/1933
2791/197149/194271/197131/19421.33/1936
2892/195350/189371/197129/19423.65/1972
2999/195344/189969/190432/19841.39/1921
3092/197144/189969/197129/19841.27/1896




Trace Snowfall recorded on September 25, 1942

CHICAGO O'HARE CURRENT AND HISTORY (3-DAY) ...

NWS OFFICIAL CHICAGO RECORDS O'HARE INTERNATIONAL AIRPORT (ORD)

Arlingtoncardinal.com/weather

LIVE RADAR | STORM TRACKS | CLOUDS INFRARED SAT | CLOUDS VISIBLE SAT (during daylight)

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SUNLIGHT DATA FOR SECURITY, TRAFFIC SAFETY, AND SPORTS
SunCalc.net data with azimuth & trajectory, times for dawn, sunrise, solar noon, sunset, dusk ...

CHICAGO O'HARE CURRENT AND HISTORY (3-DAY) ...