Climate Data
Monthly Numbers
Interested in temperature and precipitation numbers in Harrison? Check them out on a monthly basis below.
 
Climate Summary (May 2013)
 
...THE HARRISON CLIMATE SUMMARY FOR THE MONTH OF MAY 2013...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1891 TO 2013

WEATHER         OBSERVED          NORMAL  DEPART  LAST YEAR`S
                 VALUE   DATE(S)  VALUE   FROM    VALUE  DATE(S)
                                          NORMAL
................................................................
TEMPERATURE (F)
RECORD
 HIGH              99   05/29/1926
                        05/28/1926
 LOW               26   05/02/1911
HIGHEST            88   05/14        76      12       93  05/29
                                                          05/28
                                                          05/26
LOWEST             32   05/03        56     -24       45  05/22
                                                          05/10
AVG. MAXIMUM     74.6              76.2    -1.6     82.6
AVG. MINIMUM     54.5              55.4    -0.9     58.6
MEAN             64.6              65.8    -1.2     70.6
DAYS MAX >= 90      0               0.4    -0.4        4
DAYS MAX <= 32      0               0.0     0.0        0
DAYS MIN <= 32      1               0.0     1.0        0
DAYS MIN <= 0       0               0.0     0.0        0

PRECIPITATION (INCHES)
RECORD
 MAXIMUM        16.87   1961
 MINIMUM         0.59   2012
TOTALS           4.78              4.69    0.09     0.59
DAILY AVG.       0.15              0.15    0.00     0.02
DAYS >= .01        12              12.6    -0.6        7
DAYS >= .10        10                                  2
DAYS >= .50         4                                  0
DAYS >= 1.00        0               1.6    -1.6        0
GREATEST
 24 HR. TOTAL    1.26   05/02 TO 05/03

SNOWFALL (INCHES)
RECORDS
 TOTAL            0.1   2013
 24 HR TOTAL      0.1   05/03/2013 TO 05/03/2013
 SNOW DEPTH         T   05/03/2013
TOTALS            0.1R              0.0     0.1      0.0
 LIQUID EQUIV    0.01              0.00    0.01     0.00
SINCE 7/1         4.7              11.5    -6.8      2.1
 LIQUID 7/1      0.47              1.00   -0.53     0.21
SNOWDEPTH AVG.      0
DAYS >= TRACE       2               0.0     2.0        0
DAYS >= 1.0         0                                  0
GREATEST
 SNOW DEPTH         T   05/03
 24 HR TOTAL      0.1   05/03 TO 05/03

DEGREE_DAYS
HEATING TOTAL     121                77      44       18
 SINCE 7/1       3957              3998     -41     3076
COOLING TOTAL     114               102      12      199
 SINCE 1/1        146               139       7      327

FREEZE DATES
RECORD
 EARLIEST     09/13/1902
 LATEST       05/17/1912
EARLIEST                        10/29
LATEST                          04/04
..................................................

WIND (MPH)
AVERAGE WIND SPEED              7.9
HIGHEST WIND SPEED/DIRECTION    29/170    DATE  05/19
HIGHEST GUST SPEED/DIRECTION    43/170    DATE  05/19

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.40
NUMBER OF DAYS FAIR           19
NUMBER OF DAYS PC              6
NUMBER OF DAYS CLOUDY          6

AVERAGE RH (PERCENT)     73

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              0     MIXED PRECIP               0
HEAVY RAIN                6     RAIN                       9
LIGHT RAIN               12     FREEZING RAIN              1
LT FREEZING RAIN          1     HAIL                       0
HEAVY SNOW                0     SNOW                       0
LIGHT SNOW                2     SLEET                      0
FOG                      16     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 MAY 2013...

.SUMMARY...
NORTHERLY AND NORTHWESTERLY WIND FLOW OVER THE REGION DURING A GOOD
PORTION OF THE MONTH ALLOWED FOR THE COOLEST MAY IN SEVERAL YEARS.
DAILY TEMPERATURES WERE LARGELY CLOSE TO SEASONAL AVERAGES...HOWEVER
VERY COLD AIR DURING THE 3RD THROUGH THE 5TH ASSURED THAT THE MONTH
WOULD FINISH BELOW AVERAGE IN TERMS OF TEMPERATURE. HIGH TEMPERATURES
DURING THIS TIME PERIOD WERE THE COLDEST EVER RECORDED IN THE MONTH
OF MAY AT HARRISON.

RAINFALL DURING THE MONTH WAS MUCH MORE PLENTIFUL WHEN COMPARED TO
LAST YEAR...THOUGH STILL NOT NEARLY AS MUCH AS THE YEAR BEFORE.

.MONTHLY TEMPERATURES...
THE AVERAGE HIGH...LOW...AND MONTHLY TEMPERATURE WERE THE COLDEST SINCE
2011.

.DAILY AVERAGE TEMPERATURES...
ABOVE NORMAL ON 15 DAYS...AT NORMAL ON ONE DAY...AND BELOW NORMAL ON
15 DAYS. ON MAY 3RD...THE DAILY AVERAGE TEMPERATURE WAS 28 DEGREES
BELOW NORMAL.

.NUMBER OF DAYS WITH...
TEMPERATURES AT OR ABOVE 80...16...THE FEWEST SINCE 2011.
TEMPERATURES BELOW 50...8...THE MOST SINCE 2011.
TEMPERATURES AT OR BELOW 40...5...THE MOST SINCE 1976.

THERE WAS ONE DAY WITH A TEMPERATURE AT OR BELOW FREEZING...WHICH WAS
MAY 3RD. THIS MARKED THE FIRST MAY FREEZE SINCE 1963...AND THE LATEST
MAY FREEZE SINCE 1961.

.DAILY TEMPERATURE RECORDS TIED OR BROKEN DURING THE MONTH...

DATE   RECORD TYPE                NEW RECORD  PREVIOUS RECORD
 3RD   COLDEST HIGH TEMPERATURE   38 IN 2013  48 IN 1978
 4TH   COLDEST HIGH TEMPERATURE   44 IN 2013  50 IN 1978

THE HIGH TEMPERATURE MAY 3RD WAS THE COLDEST EVER RECORDED IN THE
MONTH OF MAY.

.MONTHLY TEMPERATURE RECORDS TIED OR BROKEN DURING THE MONTH...

RECORD TYPE                 NEW RECORD/DATE    PREVIOUS RECORD/DATE
COLDEST HIGH TEMPERATURE    38 MAY 3RD 2013   45 MAY 2ND 2011
COLDEST DAILY AVG. TEMP.    35.0 MAY 3RD 2013   41.0 MAY 1ST 1909

.RAINFALL...
IT WAS THE WETTEST MAY SINCE 2011.

.DAILY RAINFALL RECORDS TIED OR BROKEN DURING THE MONTH...

NONE.

.SNOWFALL...
FOR THE FIRST TIME EVER...NOT ONLY IN THE HISTORY OF THE HARRISON
STATION...BUT IN ARKANSAS AS WELL...SNOW FELL IN THE MONTH OF MAY.

0.1 INCH OF MEASURABLE SNOW FELL ON MAY 3RD...ESTABLISHING A DAILY
RECORD SNOWFALL.
A TRACE OF SNOW FELL ON MAY 4TH...ESTABLISHING A DAILY RECORD SNOWFALL.

THE SNOW ON MAY 3RD WAS THE LATEST MEASURABLE SNOW EVER RECORDED AT
HARRISON. THE PREVIOUS RECORD WAS WHEN 4.0 INCHES FELL ON APRIL 15TH
1933.

THE SNOW ON MAY 4TH MARKED THE LATEST SNOW EVER RECORDED AT HARRISON.
THE PREVIOUS RECORD WAS APRIL 30TH 1903.

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