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905
CXUS55 KOTX 011210
CLALWS

CLIMATE REPORT
NATIONAL WEATHER SERVICE SPOKANE, WA
402 AM PST WED JAN 1 2014

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

...THE LEWISTON ID AIRPORT CLIMATE SUMMARY FOR THE YEAR OF 2013...

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   07/01
LOWEST              0   12/08
AVG. MAXIMUM     64.4              63.5     0.9
AVG. MINIMUM     42.6              42.5     0.1
MEAN             53.5              53.0     0.5
DAYS MAX >= 90     64              40.1    23.9
DAYS MAX <= 32     15              12.7     2.3
DAYS MIN <= 32     95              75.9    19.1
DAYS MIN <= 0       1               0.7     0.3

PRECIPITATION (INCHES)
RECORD
 MAXIMUM        21.76   1884
 MINIMUM         7.73   2007
TOTALS           9.49             12.31   -2.82
DAILY AVG.       0.03              0.03    0.00
DAYS >= .01       102             102.8    -0.8
DAYS >= .10        29              39.7   -10.7
DAYS >= .50         1               3.1    -2.1
DAYS >= 1.00        1               0.2     0.8
GREATEST
 24 HR. TOTAL    1.01   MM

SNOWFALL (INCHES)
RECORDS
 TOTAL           62.2   1916
TOTALS            4.8              10.5    -5.7
DAYS >= TRACE      18              10.6     7.4
DAYS >= 1.0         2               3.9    -1.9
GREATEST
 24 HR TOTAL      1.8   MM

DEGREE_DAYS
HEATING TOTAL    5243              5167      76
COOLING TOTAL    1178               807     371

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

WIND (MPH)
AVERAGE WIND SPEED              4.7
HIGHEST WIND SPEED/DIRECTION    46/200    DATE  08/09
HIGHEST GUST SPEED/DIRECTION    60/220    DATE  08/09

SKY COVER
AVERAGE SKY COVER           0.40

AVERAGE RH (PERCENT)     58

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              0     MIXED PRECIP               0
HEAVY RAIN                3     RAIN                      24
LIGHT RAIN              107     FREEZING RAIN              0
LT FREEZING RAIN          2     HAIL                       0
HEAVY SNOW                0     SNOW                       2
LIGHT SNOW               20     SLEET                      0
FOG                      79     FOG W/VIS <= 1/4 MILE     29
HAZE                     46

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

$$





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