000
CXUS46 KOTX 020256
CLMLWS


CLIMATE REPORT
NATIONAL WEATHER SERVICE SPOKANE, WA
656 PM PST TUE JAN 1 2013

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

...THE LEWISTON ID AIRPORT CLIMATE SUMMARY FOR THE MONTH OF DECEMBER 2012...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1881 TO 2012

WEATHER         OBSERVED          NORMAL  DEPART  LAST YEAR`S
                 VALUE   DATE(S)  VALUE   FROM    VALUE  DATE(S)
                                          NORMAL
................................................................
TEMPERATURE (F)
RECORD
 HIGH              67   12/12/1921
 LOW              -23   12/13/1919
HIGHEST            57   12/05        MM      MM       57  12/29
LOWEST             25   12/31        MM      MM       16  12/22
                        12/29
                        12/14
AVG. MAXIMUM     43.4              39.5     3.9     40.3
AVG. MINIMUM     32.8              28.0     4.8     26.3
MEAN             38.1              33.7     4.4     33.3
DAYS MAX >= 90      0               0.0     0.0        0
DAYS MAX <= 32      0               5.5    -5.5        5
DAYS MIN <= 32     15              20.6    -5.6       26
DAYS MIN <= 0       0               0.2    -0.2        0

PRECIPITATION (INCHES)
RECORD
 MAXIMUM         4.88   1882
 MINIMUM         0.14   1970
TOTALS           0.86              0.97   -0.11     0.21
DAILY AVG.       0.03              0.03    0.00     0.01
DAYS >= .01         9              10.6    -1.6        5
DAYS >= .10         2               3.7    -1.7        0
DAYS >= .50         0               0.1    -0.1        0
DAYS >= 1.00        0               0.0     0.0        0
GREATEST
 24 HR. TOTAL    0.69   12/01 TO 12/02           12/27 TO 12/28
                                                          12/15 TO 12/15
                                                          12/15 TO 12/15

SNOWFALL (INCHES)
RECORDS
 TOTAL           18.7   1968
TOTALS            0.3               3.5    -3.2      0.5
SINCE 7/1         0.3               5.3    -5.0      1.5
SNOWDEPTH AVG.      0                 1      -1        0
DAYS >= 1.0         0               1.6    -1.6        0
GREATEST
 SNOW DEPTH         0   MM                             0  MM
 24 HR TOTAL      0.2   MM                       12/15 TO 12/15
                                                          12/15 TO 12/15
                                                          12/15 TO 12/15

DEGREE_DAYS
HEATING TOTAL     828               968    -140      976
 SINCE 7/1       1802              2208    -406     2096
COOLING TOTAL       0                 0       0        0
 SINCE 1/1       1034               807     227      742
......................................................

WIND (MPH)
AVERAGE WIND SPEED              4.3
HIGHEST WIND SPEED/DIRECTION    35/290    DATE  12/05
HIGHEST GUST SPEED/DIRECTION    47/300    DATE  12/05

SKY COVER
POSSIBLE SUNSHINE (PERCENT)    1
AVERAGE SKY COVER           0.70
NUMBER OF DAYS FAIR            1
NUMBER OF DAYS PC             16
NUMBER OF DAYS CLOUDY         14

AVERAGE RH (PERCENT)     73

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              0     MIXED PRECIP               0
HEAVY RAIN                1     RAIN                       2
LIGHT RAIN               13     FREEZING RAIN              0
LT FREEZING RAIN          0     HAIL                       0
HEAVY SNOW                0     SNOW                       0
LIGHT SNOW                6     SLEET                      0
FOG                      14     FOG W/VIS <= 1/4 MILE      7
HAZE                      4

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

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