National Weather Service United States Department of Commerce
Climate Data
Monthly Numbers
Interested in temperature and precipitation numbers in Harrison? Check them out on a monthly basis below.
 
Climate Summary (Dec 2020)
 
...THE HARRISON CLIMATE SUMMARY FOR THE MONTH OF DECEMBER 2020...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1891 TO 2021

WEATHER         OBSERVED          NORMAL  DEPART   LAST YEAR`S
                VALUE   DATE(S)   VALUE   FROM     VALUE DATE(S)
                                          NORMAL
................................................................
TEMPERATURE (F)
RECORD
 HIGH             82   12/24/1955
 LOW             -11   12/23/1989
HIGHEST           77   12/10         47      30       70  12/25
LOWEST            13   12/25         29     -16       23  12/18
AVG. MAXIMUM    51.5               47.7     3.8     53.3
AVG. MINIMUM    31.0               28.4     2.6     33.3
MEAN            41.2               38.1     3.1     43.3
DAYS MAX >= 90     0                0.0     0.0        0
DAYS MAX <= 32     1                2.6    -1.6        0
DAYS MIN <= 32    18               19.7    -1.7       16
DAYS MIN <= 0      0                0.3    -0.3        0

PRECIPITATION (INCHES)
RECORD
 MAXIMUM       11.64   1982
 MINIMUM        0.22   1919
TOTALS          2.23               3.20   -0.97     1.38
DAILY AVG.      0.07               0.10   -0.03     0.04
DAYS >= .01        7                7.9    -0.9        4
DAYS >= .10        5                                   3
DAYS >= .50        2                                   1
DAYS >= 1.00       0                0.5    -0.5        0
GREATEST
 24 HR. TOTAL   0.77   12/30 TO 12/30

SNOWFALL (INCHES)
RECORDS
 TOTAL          13.2   1917
 24 HR TOTAL    12.9   12/22/1966 TO 12/23/1966
 SNOW DEPTH       13   12/08/1917
TOTALS           3.0                1.3     1.7        T
 LIQUID EQUIV   0.30               0.10    0.20       MM
SINCE 7/1        3.0                1.8     1.2       MM
 LIQUID 7/1     0.30               0.00    0.30       MM
SNOWDEPTH AVG.     0
DAYS >= TRACE      3                4.0    -1.0        1
DAYS >= 1.0        1                                   0
GREATEST
 SNOW DEPTH        3   12/14
                       12/15
 24 HR TOTAL     3.0   12/13 TO 12/13                  T  12/16 TO 12/16
                                                          12/16 TO 12/16
                                                          12/16 TO 12/16

DEGREE DAYS
HEATING TOTAL    728                835    -107      668
 SINCE 7/1      1407               1599    -192     1537
COOLING TOTAL      0                  0       0        0
 SINCE 1/1      1404               1416     -12     1581

FREEZE DATES
RECORD
 EARLIEST     09/13/1902
 LATEST       05/17/1912
EARLIEST                        10/30
LATEST                          04/18
................................................................

WIND (MPH)
AVERAGE WIND SPEED              7.3
HIGHEST WIND SPEED/DIRECTION    25/160    DATE  12/29
HIGHEST GUST SPEED/DIRECTION    37/300    DATE  12/24

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.35
NUMBER OF DAYS FAIR           18
NUMBER OF DAYS PC              6
NUMBER OF DAYS CLOUDY          7


WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              1     MIXED PRECIP               0
HEAVY RAIN                2     RAIN                       3
LIGHT RAIN                7     FREEZING RAIN              1
LT FREEZING RAIN          2     HAIL                       0
HEAVY SNOW                0     SLEET                      2
FOG                      11     FOG W/VIS <= 1/4 MILE      1
HAZE                      1

-  INDICATES NEGATIVE NUMBERS.
R  INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T  INDICATES TRACE AMOUNT.

&&

...DATA FOR HARRISON FOR DECEMBER 2020...

.SUMMARY...
FOR THE SECOND MONTH IN A ROW, THE MEAN TEMPERATURE WAS OVER THREE
DEGREES ABOVE AVERAGE. EVEN WITH THAT, IT WAS STILL THE COOLEST
DECEMBER IN THREE YEARS.

RAINFALL WAS BELOW AVERAGE FOR THE SECOND MONTH IN A ROW. THERE WERE
SEVEN DAYS WITH MEASURABLE RAINFALL, WHICH WAS THE MOST SINCE 2018.

MEASURABLE SNOW FELL FOR THE FIRST TIME IN TWO YEARS. THIS WAS THE
SNOWIEST DECEMBER IN SEVEN YEARS, AND THE FIRST TIME IN SEVEN YEARS
THAT DECEMBER SNOWFALL HAS TOTALLED OVER HALF AN INCH.

.MONTHLY TEMPERATURES...
THE AVERAGE HIGH TEMPERATURE WAS THE COOLEST SINCE 2018. THE AVERAGE
LOW TEMPERATURE WAS THE COOLEST SINCE 2017. THE AVERAGE MONTHLY
TEMPERATURE WAS THE COOLEST SINCE 2017.

.DAILY TEMPERATURES...
DAILY TEMPERATURES WERE ABOVE AVERAGE ON 20 DAYS AND BELOW AVERAGE
ON 11 DAYS.

THERE WERE 18 DAYS WITH TEMPERATURES AT OR BELOW FREEZING, WHICH WAS
THE MOST SINCE 2017.

.DAILY RECORD TEMPERATURES TIED OR BROKEN DURING THE MONTH...
DATE  RECORD TYPE               NEW RECORD          PREVIOUS RECORD
10TH  HIGH TEMPERATURE          77 IN 2020           74 IN 2015

THE HIGH OF 77 ON THE 10TH MOST RECENTLY TIED DECEMBER 2, 2012 FOR
THE 5TH WARMEST TEMPERATURE ON RECORD IN THE MONTH OF DECEMBER AT
HARRISON.

.MONTHLY RAINFALL...
THOUGH RAINFALL WAS BELOW AVERAGE, IT WAS THE WETTEST DECEMBER SINCE
2018.

.DAILY RAINFALL RECORDS TIED OR BROKEN DURING THE MONTH...
NONE.

.MONTHLY SNOWFALL...
MEASURABLE SNOW FELL FOR THE FIRST TIME SINCE 2018. THIS WAS THE
SNOWIEST DECEMBER SINCE 2013.

.MISCELLANEOUS PHENOMENA...
NONE NOTED.