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 (May 2017)
 
...THE HARRISON CLIMATE SUMMARY FOR THE MONTH OF MAY 2017...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1891 TO 2017

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                                    
                        05/01/1903                                    
HIGHEST            87   05/27        76      11       85  05/26       
                                                          05/11       
LOWEST             41   05/01        56     -15       41  05/06       
AVG. MAXIMUM     77.0              76.2     0.8     74.4              
AVG. MINIMUM     54.0              55.4    -1.4     53.7              
MEAN             65.5              65.8    -0.3     64.0              
DAYS MAX >= 90      0               0.4    -0.4        0              
DAYS MAX <= 32      0               0.0     0.0        0              
DAYS MIN <= 32      0               0.0     0.0        0              
DAYS MIN <= 0       0               0.0     0.0        0              

PRECIPITATION (INCHES)
RECORD
 MAXIMUM        16.87   1961                                          
 MINIMUM         0.59   2012                                          
TOTALS           5.18              4.69    0.49     3.49              
DAILY AVG.       0.17              0.15    0.02     0.11              
DAYS >= .01        11              12.6    -1.6       12              
DAYS >= .10         7                                  8              
DAYS >= .50         4                                  4              
DAYS >= 1.00        2               1.6     0.4        0              
GREATEST
 24 HR. TOTAL    1.95   05/19 TO 05/19                                

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            0.0               0.0     0.0      0.0              
 LIQUID EQUIV    0.00              0.00    0.00     0.00              
SINCE 7/1         3.4              11.5    -8.1      3.7              
 LIQUID 7/1      0.34              1.00   -0.66     0.37              
SNOWDEPTH AVG.      0                                                 
DAYS >= TRACE       0               0.0     0.0        0              
DAYS >= 1.0         0                                  0              
GREATEST
 SNOW DEPTH         0   MM                                            
 24 HR TOTAL      0.0 

DEGREE_DAYS
HEATING TOTAL      74                77      -3      104              
 SINCE 7/1       2996              3998   -1002     3233              
COOLING TOTAL      98               102      -4       82              
 SINCE 1/1        151               139      12      105              

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

WIND (MPH)
AVERAGE WIND SPEED              7.3
HIGHEST WIND SPEED/DIRECTION    30/180    DATE  05/17
HIGHEST GUST SPEED/DIRECTION    41/330    DATE  05/27

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM                                      
AVERAGE SKY COVER           0.30
NUMBER OF DAYS FAIR           17
NUMBER OF DAYS PC             13
NUMBER OF DAYS CLOUDY          1

AVERAGE RH (PERCENT)     70

WEATHER CONDITIONS. NUMBER OF DAYS WITH 
THUNDERSTORM              0     MIXED PRECIP               0
HEAVY RAIN                5     RAIN                       7
LIGHT RAIN               13     FREEZING RAIN              0
LT FREEZING RAIN          0     HAIL                       0
HEAVY SNOW                0     SNOW                       0
LIGHT SNOW                0     SLEET                      0
FOG                      13     FOG W/VIS <= 1/4 MILE      1
HAZE                      0                                           
                                                                    
-  INDICATES NEGATIVE NUMBERS.                                      
R  INDICATES RECORD WAS SET OR TIED.                                
MM INDICATES DATA IS MISSING.                                       
T  INDICATES TRACE AMOUNT.                                          

&&

...Data for Harrison for May 2017...

.Summary...
While there were a few warm periods during the second and third week 
of the month, May completely bucked the trends of much of the last 
year, with temperatures below average for the month. 

For the third year in a row, no 90-degree temperatures were 
recorded in the month of May. 

Rainfall was slightly above average, and it was the wettest May in 
two years. 

.Monthly Temperatures...
Even though temperatures were below average, the average high 
temperature was the warmest since 2014, and the average low and 
monthly temperatures were the warmest since 2015. 

.Daily Temperatures...
Daily temperatures were above average on 16 days, average on three 
days, and below average on 12 days. 

.Daily Record Temperatures Tied or Broken During the Month...
None. 

.Monthly Rainfall...
It was the wettest May since 2015. 

.Daily Rainfall Records Tied or Broken...
None.