Station list
Available data
ILLINOIS RIVER BASIN
415755087525300 O'HARE AIRPORT AT CHICAGO, IL
LOCATION.--Latitude 41°57'55", longitude 87°52'53", in NE1/4NW1/4NW1/4 sec.16, T.40 N., R.12 E., Cook County
PERIOD OF RECORD.--October 1, 1998 to September 30, 1999.
GAGE.--An 8-in.-diameter, unheated, tipping-bucket rain gage.
REMARKS.--Snowfall-affected data can result during cold weather when snow fills the rain-gage funnel and then melts as
temperatures rise. Snowfall-affected data are subject to appreciable errors.
MAXIMUM FOR PERIOD OF RECORD.--Maximum, 2.92 in., estimated, October 17, 1998.
MAXIMUM FOR CURRENT YEAR.--Maximum, 2.92 in., estimated, October 17, 1998.
RAINFALL, IN INCHES, WATER YEAR OCTOBER 1998 TO SEPTEMBER 1999
DAILY MEAN VALUES
|
|---|
| DAY | OCT | NOV | DEC | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP
|
|---|
| 1 | 0.00 | 0.00 | 0.00 | 0.00 | 0.02 | 0.00 | 0.00 | 0.00 | 1.04 | 0.60 | 0.00 | 0.00
|
| 2 | e.51 | .00 | .00 | .00 | .14 | .11 | .00 | .00 | .00 | .00 | .00 | .00
|
| 3 | .00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 | .01 | .00 | .00 | .00
|
| 4 | .00 | .00 | .00 | .00 | .00 | .00 | .33 | .00 | .00 | .00 | .00 | .00
|
| 5 | e.77 | .02 | .00 | s.01 | .07 | .00 | .10 | .07 | .00 | .00 | .00 | .00
|
| 6 | e.13 | .00 | .85 | .00 | .00 | .00 | .03 | .23 | .17 | .00 | .00 | .00
|
| 7 | .00 | .00 | .00 | .00 | .00 | s.01 | .00 | .01 | .00 | .00 | .18 | .00
|
| 8 | .00 | .07 | .00 | .00 | .00 | .00 | 1.65 | .00 | .00 | .00 | .00 | .00
|
| 9 | .00 | .27 | .00 | .00 | .00 | .00 | .25 | .00 | .02 | .60 | .02 | .00
|
| 10 | .00 | .90 | .00 | .00 | .00 | .00 | .07 | .00 | .00 | .00 | .00 | .00
|
| 11 | .00 | .00 | .00 | .00 | .34 | s.02 | .01 | .98 | .64 | .00 | .00 | .00
|
| 12 | .00 | .00 | .00 | .00 | .00 | s.15 | .00 | .46 | .00 | .00 | .30 | .17
|
| 13 | .00 | .00 | .00 | .00 | .00 | s.02 | .00 | .00 | 1.93 | .00 | .10 | .00
|
| 14 | .00 | .00 | .00 | .00 | .00 | s.03 | .00 | .00 | .00 | .00 | .00 | .00
|
| 15 | e.04 | .00 | .00 | .00 | .00 | .00 | .84 | .01 | .00 | .00 | .00 | .00
|
| 16 | e.11 | .00 | .00 | s.42 | .05 | .00 | .45 | .00 | .00 | .00 | .00 | .00
|
| 17 | e2.92 | .00 | .00 | .40 | .00 | .00 | .00 | .74 | .00 | .17 | .00 | .00
|
| 18 | e.22 | .00 | .00 | .00 | .00 | .00 | .03 | .07 | .00 | .00 | .05 | .00
|
| 19 | .00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 | .05 | .75 | .04
|
| 20 | .00 | .00 | .00 | .00 | .00 | .00 | .18 | .00 | .00 | .02 | .00 | .00
|
| 21 | .00 | .00 | .00 | .71 | .00 | .00 | .16 | .68 | .00 | 1.66 | .00 | .12
|
| 22 | .00 | .00 | .00 | .48 | .00 | .00 | 1.48 | .01 | .21 | .01 | .00 | .00
|
| 23 | .00 | .00 | .00 | .81 | .00 | .00 | .68 | .15 | .11 | .28 | .38 | .00
|
| 24 | .00 | .00 | .00 | .01 | .00 | .00 | .00 | .00 | .01 | .00 | .07 | .00
|
| 25 | .00 | .00 | .00 | .00 | s.08 | .00 | .00 | .00 | .00 | .00 | .26 | .00
|
| 26 | .00 | .00 | .00 | .00 | .24 | .00 | .00 | .00 | .00 | .07 | .00 | .00
|
| 27 | .46 | .00 | .00 | .00 | .11 | .00 | 1.17 | .00 | .01 | .00 | .00 | .48
|
| 28 | .03 | .00 | .00 | .00 | .04 | .00 | .00 | .00 | .01 | .00 | .00 | 1.47
|
| 29 | .00 | .00 | s.02 | .00 | -- | .00 | .00 | .00 | .01 | .00 | .00 | .09
|
| 30 | .00 | .40 | .00 | .00 | -- | .00 | .00 | .00 | .00 | .00 | .00 | .00
|
| 31 | .00 | -- | .00 | .00 | -- | .00 | -- | .37 | -- | .00 | .00 | --
|
| TOTAL | 5.19 | 1.66 | 0.87 | 2.84 | 1.09 | 0.34 | 7.43 | 3.78 | 4.17 | 3.46 | 2.11 | 2.37
|
s Snowfall-affected precipitation
e Estimated