Climatological Report (Monthly) Issued by NWS Boston, MA
000
CXUS51 KBOX 011145
CLMBOS
CLIMATE REPORT
NATIONAL WEATHER SERVICE BOSTON/NORTON MA
745 AM EDT THU JUN 01 2023
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...THE BOSTON MA CLIMATE SUMMARY FOR THE MONTH OF MAY 2023...
CLIMATE NORMAL PERIOD 1991 TO 2020
CLIMATE RECORD PERIOD 1872 TO 2023
WEATHER OBSERVED NORMAL DEPART LAST YEAR`S
VALUE DATE(S) VALUE FROM VALUE
NORMAL
..............................................................
TEMPERATURE (F)
RECORD
HIGH 97 05/26/1880
LOW 31 05/03/1882
HIGHEST 86 05/28 89
LOWEST 42 05/18 41
AVG. MAXIMUM 69.3 66.5 2.8
AVG. MINIMUM 51.0 50.3 0.7
MEAN 60.1 58.4 1.7
DAYS MAX >= 90 0 0.6 -0.6
DAYS MAX <= 32 0 0.0 0.0
DAYS MIN <= 32 0 0.0 0.0
DAYS MIN <= 0 0 0.0 0.0
PRECIPITATION (INCHES)
RECORD
MAXIMUM 13.38 1954
MINIMUM 0.25 1944
TOTALS 2.25 3.25 -1.00
DAILY AVG. 0.07 0.10 -0.03
DAYS >= .01 9 11.8 -2.8
DAYS >= .10 3 6.8 -3.8
DAYS >= .50 1 2.0 -1.0
DAYS >= 1.00 1 0.5 0.5
GREATEST
24 HR. TOTAL 1.94 05/20 TO 05/21
SNOWFALL (INCHES)
RECORDS
MAXIMUM 0.9 1938
MINIMUM 0.0 MULTI-YEARS
TOTALS 0.0 0.0 0.0
LIQUID EQUIV 0.00
SINCE 7/1 12.4 49.2 -36.8
DAYS >= TRACE 0 0.0 0.0
DAYS >= 1.0 0 0.0 0.0
GREATEST
24 HR TOTAL MM
DEGREE DAYS
HEATING TOTAL 183 234 -51
SINCE 7/1 4667 5494 -827
COOLING TOTAL 39 29 10
SINCE 1/1 44 33 11
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WIND (MPH)
AVERAGE WIND SPEED 11.3
RESULTANT WIND SPEED/DIRECTION 2/270
HIGHEST WIND SPEED/DIRECTION 31/350 DATE 05/11
HIGHEST GUST SPEED/DIRECTION 41/240 DATE 05/01
41/330 05/11
SKY COVER
POSSIBLE SUNSHINE (PERCENT) MM
AVERAGE SKY COVER 0.45
NUMBER OF DAYS FAIR 12
NUMBER OF DAYS PC 15
NUMBER OF DAYS CLOUDY 4
AVERAGE RH (PERCENT) 56
WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM 0 MIXED PRECIP 0
HEAVY RAIN 3 RAIN 3
LIGHT RAIN 11 FREEZING RAIN 0
LT FREEZING RAIN 0 HAIL 0
HEAVY SNOW 0 SNOW 0
LIGHT SNOW 0 SLEET 0
FOG 8 FOG W/VIS <= 1/4 MILE 0
HAZE 2
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
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