- Warnings
- Observations
- Forecasts
- Text Messages
- Forecast Models
- Climate
- Weather Safety
- Education/Outreach
- Information Center
- Contact Us
RSS Feeds
Climatological Report (Monthly)
Issued by NWS
Issued by NWS
Versions: 1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
324
CXUS53 KLOT 011741
CLMORD
CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
1241 PM CDT SAT MAY 01 2021
...................................
...THE CHICAGO-OHARE CLIMATE SUMMARY FOR THE MONTH OF APRIL 2021...
CLIMATE NORMAL PERIOD: 1981 TO 2010
CLIMATE RECORD PERIOD: 1871 TO 2021
WEATHER OBSERVED NORMAL DEPART LAST YEAR`S
VALUE DATE(S) VALUE FROM VALUE DATE(S)
NORMAL
................................................................
TEMPERATURE (F)
RECORD
HIGH 91 04/22/1980
04/30/1942
LOW 7 04/07/1982
HIGHEST 87 04/27 MM MM 80 04/07
LOWEST 24 04/01 MM MM 27 04/15
AVG. MAXIMUM 61.3 59.0 2.3 58.0
AVG. MINIMUM 42.5 38.8 3.7 38.7
MEAN 51.9 48.9 3.0 48.4
DAYS MAX >= 90 0 0.0 0.0 0
DAYS MAX <= 32 0 0.0 0.0 0
DAYS MIN <= 32 3 6.3 -3.3 3
DAYS MIN <= 0 0 0.0 0.0 0
PRECIPITATION (INCHES)
RECORD
MAXIMUM 8.68 2013
MINIMUM 0.14 1899
TOTALS 0.71 3.38 -2.67 3.81
DAILY AVG. 0.02 0.11 -0.09 0.13
DAYS >= .01 5 12.0 -7.0 16
DAYS >= .10 2 6.4 -4.4 10
DAYS >= .50 0 2.4 -2.4 1
DAYS >= 1.00 0 0.8 -0.8 1
GREATEST
24 HR. TOTAL 0.36 04/08 TO 04/08 1.89 04/29 TO 04/29
SNOWFALL (INCHES)
RECORDS
TOTAL 13.6 1938
TOTALS T 1.2 -1.2 4.7
SINCE 7/1 48.8 36.3 12.5 MM
SNOWDEPTH AVG. 0 0
DAYS >= 1.0 0 0.3 -0.3 2
GREATEST
SNOW DEPTH 0 2 04/17
24 HR TOTAL T 04/20 TO 04/20
DEGREE DAYS
HEATING TOTAL 402 492 -90 492
SINCE 7/1 5380 6068 -688 5558
COOLING TOTAL 18 9 9 1
SINCE 1/1 18 10 8 1
................................................................
WIND (MPH)
AVERAGE WIND SPEED 9.6
HIGHEST WIND SPEED/DIRECTION 36/300 DATE 04/29
HIGHEST GUST SPEED/DIRECTION 57/310 DATE 04/29
SKY COVER
POSSIBLE SUNSHINE (PERCENT) MM
AVERAGE SKY COVER 0.61
NUMBER OF DAYS FAIR 7
NUMBER OF DAYS PC 12
NUMBER OF DAYS CLOUDY 11
WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM 1 MIXED PRECIP 0
HEAVY RAIN 2 RAIN 3
LIGHT RAIN 11 FREEZING RAIN 0
LT FREEZING RAIN 0 HAIL 0
HEAVY SNOW 0 SNOW 0
LIGHT SNOW 1 SLEET 0
FOG 9 FOG W/VIS <= 1/4 MILE 0
HAZE 6
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
$$
- National Weather Service
- Chicago, IL Weather Forecast Office
- 333 West University Drive
- Romeoville, IL 60446
- 815-834-1435 8am-8pm
- Page Author: LOT Webmaster
- Web Master's E-mail: w-lot.webmaster@noaa.gov
- Page last modified: Feb 1st, 2021 20:13 UTC