Now that it is 'meteorological spring,' the NWS has put out the climate summaries for the winter season of December - February:
..THE GRAND RAPIDS MI CLIMATE SUMMARY FOR THE SEASON, FROM
12/1/2009 TO 2/28/2010...
CLIMATE NORMAL PERIOD 1971 TO 2000
CLIMATE RECORD PERIOD 1892 TO 2010
WEATHER OBSERVED NORMAL DEPART LAST YEAR'S
VALUE DATE(S) VALUE FROM VALUE DATE(S)
NORMAL
............................................................
TEMPERATURE (F)
RECORD
HIGH 69 12/05/2001
02/11/1999
LOW -24 02/14/1899
02/13/1899
HIGHEST 49 01/24 53 -4 61 02/10
12/02
12/01
LOWEST 4 01/30 -6 10 -8 01/17
01/15
AVG. MAXIMUM 31.7 31.9 -0.2 31.1
AVG. MINIMUM 21.7 18.1 3.6 16.5
MEAN 26.7 25.0 1.7 23.8
DAYS MAX >= 90 0 0.0 0.0 0
DAYS MAX <= 32 55 46.8 8.2 60
DAYS MIN <= 32 83 82.4 0.6 85
DAYS MIN <= 0 0 7.4 -7.4 7
PRECIPITATION (INCHES)
RECORD
MAXIMUM 13.78 1898
MINIMUM 2.08 1987
TOTALS 5.64 6.27 -0.63 11.32
DAILY AVG. 0.06 0.07 -0.01 0.13
DAYS >= .01 43 44.1 -1.1 56
DAYS >= .10 19 17.2 1.8 26
DAYS >= .50 2 2.6 -0.6 6
DAYS >= 1.00 0 0.9 -0.9 2
GREATEST
24 HR. TOTAL 0.56 12/09 TO 12/09
SNOWFALL (INCHES)
RECORDS
TOTAL 94.9 2008
TOTALS 69.5 52.1 17.4 94.5
SINCE 7/1 70.2
SNOWDEPTH AVG. 4 3 1 5
DAYS >= 1.0 19 14.9 4.1
GREATEST
SNOW DEPTH 11 12/11 17 12/24
24 HR TOTAL 9.5 02/09 TO 02/10
DEGREE_DAYS
HEATING TOTAL 3424 3599 -175 3695
SINCE 7/1 4692 5056 -364 5005
COOLING TOTAL 0 0 0 0
SINCE 1/1 0 0 0 0
FREEZE DATES
EARLIEST 10/13
LATEST 05/02
.............................................................
WIND (MPH)
AVERAGE WIND SPEED 9.5
HIGHEST WIND SPEED/DIRECTION 32/050 DATE 02/05
HIGHEST GUST SPEED/DIRECTION 44/050 DATE 02/05
SKY COVER
POSSIBLE SUNSHINE (PERCENT) 19
NUMBER OF DAYS FAIR 4
NUMBER OF DAYS PC 17
NUMBER OF DAYS CLOUDY 69
AVERAGE RH (PERCENT) 73
WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM 1 MIXED PRECIP 2
HEAVY RAIN 0 RAIN 2
LIGHT RAIN 8 FREEZING RAIN 2
LT FREEZING RAIN 11 HAIL 1
HEAVY SNOW 8 SNOW 17
LIGHT SNOW 57 SLEET 2
FOG 51 FOG W/VIS <= 1/4 MILE 9
HAZE 52
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
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