National Weather Service Weather Forecast Office

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TTAA00 KBIS 011649

CLIMATE REPORT
NATIONAL WEATHER SERVICE EASTERN NORTH DAKOTA/GRAND FORKS            
1041 AM CST TUE JAN 1 2013

................................... 

...THE GRAND FORKS CLIMATE SUMMARY FOR THE YEAR OF 2012...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1941 TO 2012

WEATHER         OBSERVED          NORMAL  DEPART  LAST YEAR'S         
                 VALUE   DATE(S)  VALUE   FROM    VALUE  DATE(S)      
                                          NORMAL                      
................................................................
TEMPERATURE (F)
RECORD
 HIGH             104   07/05/1988                                    
                        08/07/1983                                    
 LOW              -43   01/30/2004                                    
HIGHEST            97   08/29        51      46       96  06/30       
LOWEST            -17   01/19        29     -46      -30  01/20       
AVG. MAXIMUM     55.0              51.1     3.9     51.8              
AVG. MINIMUM     32.3              28.9     3.4     30.4              
MEAN             43.7              40.0     3.7     41.1              
DAYS MAX >= 90     18               8.9     9.1        8              
DAYS MAX <= 32     78              97.3   -19.3       92              
DAYS MIN <= 32    172             187.2   -15.2      178              
DAYS MIN <= 0      34              51.2   -17.2       47              

PRECIPITATION (INCHES)
RECORD
 MAXIMUM        27.77   2010                                          
 MINIMUM        12.61   1989                                          
TOTALS          17.08             20.81   -3.73    19.72              
DAILY AVG.       0.05              0.06   -0.01     0.05              
DAYS >= .01       108             103.2     4.8       98              
DAYS >= .10        42              44.7    -2.7       45              
DAYS >= .50         9              11.4    -2.4       11              
DAYS >= 1.00        1               3.6    -2.6        4              
GREATEST
 24 HR. TOTAL    1.96   MM                       12/31 TO 12/31       
                                                          12/31 TO 12/31
                                                          12/31 TO 12/31
 STORM TOTAL       MM                                 MM              
 (MM/DD(HH))            MM                    12/31(00) TO 12/31(00)  
                                                 12/31(00) TO 12/31(00)1
                                                 12/31(00) TO 12/31(00)1

SNOWFALL (INCHES)
RECORDS
 TOTAL           92.1   1996                                          
 24 HR TOTAL      7.9   MM                                            
 SNOW DEPTH        15   12/26/2009                                    
TOTALS           31.5              47.1   -15.6     42.6              
 LIQUID EQUIV    3.15                MM      MM     4.26              
SINCE 7/1        15.0              19.9    -4.9      6.3              
 LIQUID 7/1      1.50                MM      MM     0.63              
SNOWDEPTH AVG.      1                MM      MM        2              
DAYS >= TRACE      75              41.5    33.5       76              
DAYS >= 1.0        10              14.3    -4.3       12              
GREATEST
 SNOW DEPTH         6   03/09                         12  01/17       
                        03/06                                         
                        03/08                                         
 24 HR TOTAL      3.7   MM                       12/31 TO 12/31       
                                                          12/31 TO 12/31
                                                          12/31 TO 12/31
 STORM TOTAL       MM                                 MM              
 (MM/DD(HH))            MM                    12/31(00) TO 12/31(00)  
                                                 12/31(00) TO 12/31(00)1
                                                 12/31(00) TO 12/31(00)1

DEGREE_DAYS
HEATING TOTAL    8264              9516   -1252     9107              
 SINCE 7/1         MM              3859      MM       MM              
COOLING TOTAL     572               379     193      538              
 SINCE 1/1        572               379     193      538              

FREEZE DATES
RECORD
 EARLIEST     MM                                                      
 LATEST       MM                                                      
EARLIEST                        MM                                    
LATEST                          MM                                    
..................................................

WIND (MPH)
AVERAGE WIND SPEED              9.8
HIGHEST WIND SPEED/DIRECTION    41/350    DATE  10/18
HIGHEST GUST SPEED/DIRECTION    52/350    DATE  10/18

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM                                      
AVERAGE SKY COVER           0.60
NUMBER OF DAYS FAIR           86
NUMBER OF DAYS PC            163
NUMBER OF DAYS CLOUDY        117

AVERAGE RH (PERCENT)     70

WEATHER CONDITIONS. NUMBER OF DAYS WITH 
THUNDERSTORM              0     MIXED PRECIP               0
HEAVY RAIN               10     RAIN                      27
LIGHT RAIN               94     FREEZING RAIN              0
LT FREEZING RAIN          6     HAIL                       1
HEAVY SNOW                2     SNOW                       9
LIGHT SNOW               71     SLEET                      0
FOG                     141     FOG W/VIS <= 1/4 MILE     24
HAZE                     48                                           
                                                                    
-  INDICATES NEGATIVE NUMBERS.                                      
R  INDICATES RECORD WAS SET OR TIED.                                
MM INDICATES DATA IS MISSING.                                       
T  INDICATES TRACE AMOUNT.                                          

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