Climatological Report (Monthly)
Issued by NWS Spokane, WA

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CXUS46 KOTX 020729 CCA
CLMLWS

CLIMATE REPORT
NATIONAL WEATHER SERVICE SPOKANE, WA
702 AM PST THU FEB 1 2018

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

...THE LEWISTON ID AIRPORT CLIMATE SUMMARY FOR THE MONTH OF JANUARY 2018...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1881 TO 2018

WEATHER         OBSERVED          NORMAL  DEPART  LAST YEAR`S
                 VALUE   DATE(S)  VALUE   FROM    VALUE  DATE(S)
                                          NORMAL
................................................................
TEMPERATURE (F)
RECORD
 HIGH              66   01/09/1953
 LOW              -22   01/31/1950
HIGHEST            58   01/29        MM      MM       46  01/21
LOWEST             27   01/03        MM      MM        4  01/05
AVG. MAXIMUM     45.9              41.6     4.3     31.5
AVG. MINIMUM     34.5              29.6     4.9     20.8
MEAN             40.2              35.6     4.6     26.1
DAYS MAX >= 90      0               0.0     0.0        0
DAYS MAX <= 32      2               4.4    -2.4       13
DAYS MIN <= 32     11              17.8    -6.8       28
DAYS MIN <= 0       0               0.1    -0.1        0

PRECIPITATION (INCHES)
RECORD
 MAXIMUM         3.56   1883
 MINIMUM         0.11   2007
TOTALS           1.37              1.08    0.29     0.81
DAILY AVG.       0.04              0.03    0.01     0.03
DAYS >= .01        15              10.0     5.0       10
DAYS >= .10         5               3.2     1.8        4
DAYS >= .50         0               0.3    -0.3        0
DAYS >= 1.00        0               0.0     0.0        0
GREATEST
 24 HR. TOTAL    0.47   01/11 TO 01/11           01/18 TO 01/18
                                                          01/31 TO 01/31
                                                          01/31 TO 01/31

SNOWFALL (INCHES)
RECORDS
 TOTAL           26.1   1957
TOTALS             MM               2.4      MM      6.7
SINCE 7/1        13.0               7.7     5.3     26.4
SNOWDEPTH AVG.     MM                 2      MM        1
DAYS >= 1.0        MM               0.8      MM        3
GREATEST
 SNOW DEPTH         0   MM                             3  01/13
                                                          01/12
 24 HR TOTAL      0.0   01/31 TO 01/31           01/31 TO 01/31
                                                          01/31 TO 01/31
                                                          01/31 TO 01/31

DEGREE_DAYS
HEATING TOTAL     759               911    -152     1196
 SINCE 7/1       2967              3119    -152     3263
COOLING TOTAL       0                 0       0        0
 SINCE 1/1          0                 0       0        0
..................................................

WIND (MPH)
AVERAGE WIND SPEED              5.1
HIGHEST WIND SPEED/DIRECTION    32/200    DATE  01/27
HIGHEST GUST SPEED/DIRECTION    43/290    DATE  01/30

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.70
NUMBER OF DAYS FAIR            4
NUMBER OF DAYS PC             11
NUMBER OF DAYS CLOUDY         16

AVERAGE RH (PERCENT)     80

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              0     MIXED PRECIP               0
HEAVY RAIN                0     RAIN                       1
LIGHT RAIN               17     FREEZING RAIN              0
LT FREEZING RAIN          0     HAIL                       0
HEAVY SNOW                0     SNOW                       0
LIGHT SNOW                0     SLEET                      0
FOG                      15     FOG W/VIS <= 1/4 MILE      9
HAZE                      1

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

$$

JANUARY 2018 BROUGHT WARMER THAN NORMAL TEMPERATURES AND NORMAL
PRECIPITATION TO SOUTHEAST WASHINGTON AND THE SOUTH IDAHO PANHANDLE.
THE MILD TEMPERATURES DOMINATED THE MONTH WITH MOSTLY RAIN IN THE
LOWER ELEVATIONS WITH A MIX OF RAIN AND SNOW IN THE MOUNTAINS.  MOST
OF THE STORMS ONLY BROUGHT LIGHT TO MODERATE AMOUNTS OF
PRECIPITATION.  ALTHOUGH THE STORM ON THE 11TH BROUGHT MORE
SIGNFICANT RAIN TO THE PALOUSE WITH 0.80 INCHES IN PULLMAN.  ON THE
27TH STRONGER WINDS HIT THE REGION BEHIND A COLD FRONT WITH 68 MPH
IN THE BLUE MOUNTAINS AT ALDER RIDGE, 53 MPH THORNTON, 48 MPH
PULLMAN, AND 47 MPH UNIONTOWN AND RITZVILLE.  ON THE 29TH
EXCEPTIONALLY MILD CONDITIONS OCCURRED FOLLOWING A WARM FRONT AS
BREEZY WINDS MIXED DOWN MILD AIR TO THE SURFACE.  LEWISTON REACHED A
BALMY 58 DEGREES WHICH TIED A RECORD HIGH FOR THE DATE.



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