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Climatological Report (Annual)
Issued by NWS Spokane, WA

000
CXUS55 KOTX 021736
CLALWS


CLIMATE REPORT
NATIONAL WEATHER SERVICE SPOKANE, WA
928 AM PST WED JAN 2 2013

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

...THE LEWISTON ID AIRPORT CLIMATE SUMMARY FOR THE YEAR OF 2012...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1881 TO 2013

WEATHER         OBSERVED          NORMAL  DEPART
                 VALUE   DATE(S)  VALUE   FROM
                                          NORMAL
................................................
TEMPERATURE (F)
RECORD
 HIGH             117   07/27/1939
 LOW              -23   12/13/1919
HIGHEST           107   08/07
LOWEST             15   01/12
AVG. MAXIMUM     65.3              63.5     1.8
AVG. MINIMUM     43.9              42.5     1.4
MEAN             54.6              53.0     1.6
DAYS MAX >= 90     47              40.1     6.9
DAYS MAX <= 32      1              12.7   -11.7
DAYS MIN <= 32     70              75.9    -5.9
DAYS MIN <= 0       0               0.7    -0.7

PRECIPITATION (INCHES)
RECORD
 MAXIMUM        21.76   1884
 MINIMUM         7.73   2007
TOTALS          13.67             12.31    1.36
DAILY AVG.          T              0.03   -0.03
DAYS >= .01       111             102.8     8.2
DAYS >= .10        47              39.7     7.3
DAYS >= .50         6               3.1     2.9
DAYS >= 1.00        0               0.2    -0.2
GREATEST
 24 HR. TOTAL    1.19   MM

SNOWFALL (INCHES)
RECORDS
 TOTAL           62.2   1916
TOTALS           12.3              10.5     1.8
DAYS >= TRACE      28              10.6    17.4
DAYS >= 1.0         2               3.9    -1.9
GREATEST
 24 HR TOTAL      8.4   MM

DEGREE_DAYS
HEATING TOTAL    4543              5167    -624
COOLING TOTAL    1034               807     227

FREEZE DATES
RECORD
 EARLIEST     09/17/1965
 LATEST       05/12/1985
EARLIEST                        10/24
LATEST                          04/07
.................................................

WIND (MPH)
AVERAGE WIND SPEED              4.9
HIGHEST WIND SPEED/DIRECTION    43/260    DATE  02/22
HIGHEST GUST SPEED/DIRECTION    56/280    DATE  02/22

SKY COVER
AVERAGE SKY COVER           0.40

AVERAGE RH (PERCENT)     58

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              0     MIXED PRECIP               0
HEAVY RAIN                6     RAIN                      31
LIGHT RAIN              133     FREEZING RAIN              0
LT FREEZING RAIN          1     HAIL                       2
HEAVY SNOW                0     SNOW                       2
LIGHT SNOW               22     SLEET                      0
FOG                     102     FOG W/VIS <= 1/4 MILE     22
HAZE                     49

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

$$