000
CXUS46 KOTX 222128 CCA
CLMLWS

CLIMATE REPORT
NATIONAL WEATHER SERVICE SPOKANE, WA
1044 AM PST FRI FEB 1 2013

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

JANUARY 2013 ACROSS SOUTHEAST WASHINGTON AND THE SOUTHERN IDAHO
PANHANDLE WAS COOLER AND A BIT DRIER THAN NORMAL. THE SNOW TOTAL FOR
JANUARY AT LEWISTON WAS 2.3 INCHES WHICH WAS VERY NEAR THE JANUARY
AVERAGE OF 2.4 INCHES. THE BULK OF THE SNOWFALL ACROSS THIS AREA
OCCURRED UNDER UNSTABLE NORTHWEST FLOW OVER TWO PERIODS DURING THE
MONTH. THE FIRST PERIOD WAS FROM 10TH THROUGH THE 14TH. THIS FIVE
DAY PERIOD YIELDED 2.2 INCHES IN LEWISTON...4.0 INCHES IN
PULLMAN...5.8 INCHES IN ST. MARIES...6.5 INCHES IN POTLATCH...AND
17.6 INCHES IN WINCHESTER. A MILD AND WET PATTERN BROUGHT 0.41
INCHES OF RAIN TO LEWISTON BETWEEN THE 28TH AND 31ST TO END THE
MONTH. THE WARMEST DAY OF THE MONTH WAS JANUARY 30TH WITH A HIGH
TEMPERATURE OF 55 DEGREES.

NO RECORDS WERE SET DURING THE MONTH AT THE LEWISTON AIRPORT.

...THE LEWISTON ID AIRPORT CLIMATE SUMMARY FOR THE MONTH OF JANUARY
2013...

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

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            55   01/30        MM      MM       57  01/04
LOWEST             16   01/12        MM      MM       15  01/12
AVG. MAXIMUM     39.5              41.6    -2.1     43.6
AVG. MINIMUM     27.3              29.6    -2.3     28.0
MEAN             33.4              35.6    -2.2     35.9
DAYS MAX >= 90      0               0.0     0.0        0
DAYS MAX <= 32      4               4.4    -0.4        1
DAYS MIN <= 32     23              17.8     5.2       20
DAYS MIN <= 0       0               0.1    -0.1        0

PRECIPITATION (INCHES)
RECORD
 MAXIMUM         3.56   1883
 MINIMUM         0.11   2007
TOTALS           0.90              1.08   -0.18       MM
DAILY AVG.       0.03              0.03    0.00     0.05
DAYS >= .01        13              10.0     3.0       10
DAYS >= .10         3               3.2    -0.2        2
DAYS >= .50         0               0.3    -0.3        2
DAYS >= 1.00        0               0.0     0.0        0
GREATEST
 24 HR. TOTAL    0.33   01/29 TO 01/30           01/17 TO 01/18

SNOWFALL (INCHES)
RECORDS
 TOTAL           26.1   1957
TOTALS            2.3               2.4    -0.1     12.0
SINCE 7/1         2.6               7.7    -5.1     13.5
SNOWDEPTH AVG.      0                 2      -2        1
DAYS >= 1.0         1               0.8     0.2        2
GREATEST
 SNOW DEPTH         1   01/16                          7  01/19
                        01/15
                        01/13
 24 HR TOTAL      1.1   01/14                    01/18 TO 01/18

DEGREE_DAYS
HEATING TOTAL     970               911      59      692
 SINCE 7/1       2772              3119    -347     2788
COOLING TOTAL       0                 0       0        0
 SINCE 1/1          0                 0       0        0
.........................................................

WIND (MPH)
AVERAGE WIND SPEED              5.1
HIGHEST WIND SPEED/DIRECTION    31/170    DATE  01/07
HIGHEST GUST SPEED/DIRECTION    45/330    DATE  01/11

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.60
NUMBER OF DAYS FAIR           10
NUMBER OF DAYS PC              6
NUMBER OF DAYS CLOUDY         15

AVERAGE RH (PERCENT)     73

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              0     MIXED PRECIP               0
HEAVY RAIN                0     RAIN                       2
LIGHT RAIN               10     FREEZING RAIN              0
LT FREEZING RAIN          0     HAIL                       0
HEAVY SNOW                0     SNOW                       1
LIGHT SNOW                8     SLEET                      0
FOG                      16     FOG W/VIS <= 1/4 MILE      5
HAZE                      2

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

$$