Climatological Report (Annual)
Issued by NWS Spokane, WA

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000
CXUS55 KOTX 010840
CLALWS


CLIMATE REPORT
NATIONAL WEATHER SERVICE SPOKANE, WA
1239 AM PST THU JAN 1 2015

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

...THE LEWISTON ID AIRPORT CLIMATE SUMMARY FOR THE YEAR OF 2014...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1881 TO 2014

WEATHER         OBSERVED          NORMAL  DEPART
                 VALUE   DATE(S)  VALUE   FROM
                                          NORMAL
................................................
TEMPERATURE (F)
RECORD
 HIGH             117   07/27/1939
 LOW              -23   12/13/1919
HIGHEST           106   07/29
LOWEST              4   02/06
AVG. MAXIMUM     65.2              63.5     1.7
AVG. MINIMUM     44.1              42.5     1.6
MEAN             54.6              53.0     1.6
DAYS MAX >= 90     49              40.1     8.9
DAYS MAX <= 32     19              12.7     6.3
DAYS MIN <= 32     73              75.9    -2.9
DAYS MIN <= 0       0               0.7    -0.7

PRECIPITATION (INCHES)
RECORD
 MAXIMUM        21.76   1884
 MINIMUM         7.73   2007
TOTALS          12.11             12.31   -0.20
DAILY AVG.       0.03              0.03    0.00
DAYS >= .01       110             102.8     7.2
DAYS >= .10        45              39.7     5.3
DAYS >= .50         3               3.1    -0.1
DAYS >= 1.00        0               0.2    -0.2
GREATEST
 24 HR. TOTAL    0.71   MM

SNOWFALL (INCHES)
RECORDS
 TOTAL           62.2   1916
TOTALS           14.0              10.5     3.5
DAYS >= TRACE      25              10.6    14.4
DAYS >= 1.0         4               3.9     0.1
GREATEST
 24 HR TOTAL      5.3   MM

DEGREE_DAYS
HEATING TOTAL    4732              5167    -435
COOLING TOTAL    1095               807     288

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

WIND (MPH)
AVERAGE WIND SPEED              5.6
HIGHEST WIND SPEED/DIRECTION    45/290    DATE  07/23
HIGHEST GUST SPEED/DIRECTION    60/180    DATE  06/02

SKY COVER
AVERAGE SKY COVER           0.40

AVERAGE RH (PERCENT)     55

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              0     MIXED PRECIP               0
HEAVY RAIN                6     RAIN                      26
LIGHT RAIN              143     FREEZING RAIN              1
LT FREEZING RAIN          2     HAIL                       0
HEAVY SNOW                0     SNOW                       3
LIGHT SNOW               25     SLEET                      0
FOG                      68     FOG W/VIS <= 1/4 MILE     20
HAZE                     42

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

$$



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