Climatological Report (Annual)
Issued by NWS Boston, MA
Issued by NWS Boston, MA
000 CXUS51 KBOX 180011 CLABOS CLIMATE REPORT NATIONAL WEATHER SERVICE BOSTON/NORTON MA 712 PM EST SUN JAN 17 2021 ................................... ...THE BOSTON MA CLIMATE SUMMARY FOR THE YEAR OF 2020... CLIMATE NORMAL PERIOD 1981 TO 2010 CLIMATE RECORD PERIOD 1872 TO 2021 WEATHER OBSERVED NORMAL DEPART VALUE DATE(S) VALUE FROM NORMAL ................................................ TEMPERATURE (F) RECORD HIGH 104 07/04/1911 LOW -18 02/09/1934 HIGHEST 95 07/28 07/27 07/19 LOWEST 12 02/15 AVG. MAXIMUM 61.1 58.8 2.3 AVG. MINIMUM 45.9 44.1 1.8 MEAN 53.5 51.5 2.0 DAYS MAX >= 90 14 10.3 3.7 DAYS MAX <= 32 9 24.6 -15.6 DAYS MIN <= 32 71 91.9 -20.9 DAYS MIN <= 0 0 0.5 -0.5 PRECIPITATION (INCHES) RECORD MAXIMUM 65.53 1878 MINIMUM 23.71 1965 TOTALS 36.54 43.77 -7.23 DAILY AVG. 0.10 0.12 -0.02 DAYS >= .01 117 126.0 -9.0 DAYS >= .10 70 76.2 -6.2 DAYS >= .50 28 28.4 -0.4 DAYS >= 1.00 8 10.1 -2.1 GREATEST 24 HR. TOTAL 1.81 11/23 TO 11/23 SNOWFALL (INCHES) RECORDS MAXIMUM 108.6 2015 MINIMUM 6.4 1973 TOTALS 21.6 43.8 -22.2 SINCE 7/1 17.3 10.3 7.0 DAYS >= TRACE 30 22.4 7.6 DAYS >= 1.0 3 10.9 -7.9 GREATEST 24 HR TOTAL 12.3 12/17 TO 12/17 DEGREE DAYS HEATING TOTAL 5029 5681 -652 SINCE 7/1 1781 1992 -211 COOLING TOTAL 924 747 177 SINCE 1/1 924 747 177 ................................................ WIND (MPH) AVERAGE WIND SPEED 10.9 RESULTANT WIND SPEED/DIRECTION 3/260 HIGHEST WIND SPEED/DIRECTION 47/190 DATE 04/13 HIGHEST GUST SPEED/DIRECTION 65/270 DATE 10/07 SKY COVER POSSIBLE SUNSHINE (PERCENT) MM AVERAGE SKY COVER 0.60 NUMBER OF DAYS FAIR 64 NUMBER OF DAYS PC 173 NUMBER OF DAYS CLOUDY 129 AVERAGE RH (PERCENT) 64 WEATHER CONDITIONS. NUMBER OF DAYS WITH THUNDERSTORM 21 MIXED PRECIP 0 HEAVY RAIN 35 RAIN 61 LIGHT RAIN 139 FREEZING RAIN 0 LT FREEZING RAIN 2 HAIL 3 HEAVY SNOW 1 SNOW 6 LIGHT SNOW 28 SLEET 4 FOG 123 FOG W/VIS <= 1/4 MILE 14 HAZE 29 - INDICATES NEGATIVE NUMBERS. R INDICATES RECORD WAS SET OR TIED. MM INDICATES DATA IS MISSING. T INDICATES TRACE AMOUNT. $$