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Climatological Report (Monthly)
Issued by NWS Chicago, IL
Issued by NWS Chicago, IL
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CXUS53 KLOT 011741
CLMRFD
CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
1241 PM CDT SAT MAY 01 2021
...................................
...THE ROCKFORD IL CLIMATE SUMMARY FOR THE MONTH OF APRIL 2021...
CLIMATE NORMAL PERIOD: 1981 TO 2010
CLIMATE RECORD PERIOD: 1905 TO 2021
WEATHER OBSERVED NORMAL DEPART LAST YEAR`S
VALUE DATE(S) VALUE FROM VALUE DATE(S)
NORMAL
................................................................
TEMPERATURE (F)
RECORD
HIGH 93 04/10/1930
LOW 5 04/07/1982
HIGHEST 86 04/27 MM MM 78 04/07
LOWEST 21 04/02 MM MM 23 04/16
AVG. MAXIMUM 63.3 60.7 2.6 58.0
AVG. MINIMUM 41.6 38.1 3.5 37.2
MEAN 52.5 49.4 3.1 47.6
DAYS MAX >= 90 0 0.0 0.0 0
DAYS MAX <= 32 0 0.1 -0.1 0
DAYS MIN <= 32 4 7.5 -3.5 6
DAYS MIN <= 0 0 0.0 0.0 0
PRECIPITATION (INCHES)
RECORD
MAXIMUM 9.92 1973
MINIMUM 0.28 1915
TOTALS 1.66 3.35 -1.69 2.79
DAILY AVG. 0.06 0.11 -0.05 0.09
DAYS >= .01 6 11.3 -5.3 17
DAYS >= .10 5 6.4 -1.4 9
DAYS >= .50 2 2.4 -0.4 1
DAYS >= 1.00 0 0.8 -0.8 0
GREATEST
24 HR. TOTAL 0.77 04/10 TO 04/10 0.50 04/29 TO 04/29
SNOWFALL (INCHES)
RECORDS
TOTAL 9.0 1936
TOTALS T 0.9 -0.9 3.3
SINCE 7/1 36.5 36.7 -0.2 MM
SNOWDEPTH AVG. 0 0
DAYS >= 1.0 0 0.3 -0.3 1
GREATEST
SNOW DEPTH 0 3 04/17
24 HR TOTAL T 04/20 TO 04/20
DEGREE DAYS
HEATING TOTAL 384 476 -92 516
SINCE 7/1 5810 6340 -530 5923
COOLING TOTAL 14 8 6 0
SINCE 1/1 14 8 6 0
................................................................
WIND (MPH)
AVERAGE WIND SPEED 9.4
HIGHEST WIND SPEED/DIRECTION 37/160 DATE 04/26
HIGHEST GUST SPEED/DIRECTION 52/150 DATE 04/26
SKY COVER
POSSIBLE SUNSHINE (PERCENT) MM
AVERAGE SKY COVER 0.64
NUMBER OF DAYS FAIR 6
NUMBER OF DAYS PC 14
NUMBER OF DAYS CLOUDY 10
WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM 2 MIXED PRECIP 0
HEAVY RAIN 2 RAIN 2
LIGHT RAIN 11 FREEZING RAIN 0
LT FREEZING RAIN 0 HAIL 0
HEAVY SNOW 0 SNOW 0
LIGHT SNOW 1 SLEET 0
FOG 5 FOG W/VIS <= 1/4 MILE 0
HAZE 5
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
$$
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