Climatological Report (Monthly)
Issued by NWS Spokane, WA

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CXUS46 KOTX 011126
CLMLWS


CLIMATE REPORT
NATIONAL WEATHER SERVICE SPOKANE, WA
409 AM PDT WED APR 1 2015

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

...THE LEWISTON ID AIRPORT CLIMATE SUMMARY FOR THE MONTH OF MARCH 2015...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1881 TO 2015

WEATHER         OBSERVED          NORMAL  DEPART  LAST YEAR`S
                 VALUE   DATE(S)  VALUE   FROM    VALUE  DATE(S)
                                          NORMAL
................................................................
TEMPERATURE (F)
RECORD
 HIGH              80   03/30/1923
 LOW                2   03/05/1955
HIGHEST            76   03/27        MM      MM       64  03/24
LOWEST             22   03/04        MM      MM       24  03/01
AVG. MAXIMUM     59.8              54.9     4.9     55.3
AVG. MINIMUM     38.2              35.6     2.6     35.7
MEAN             49.0              45.3     3.7     45.5
DAYS MAX >= 90      0               0.0     0.0        0
DAYS MAX <= 32      0               0.1    -0.1        0
DAYS MIN <= 32      7               8.0    -1.0        9
DAYS MIN <= 0       0               0.0     0.0        0

PRECIPITATION (INCHES)
RECORD
 MAXIMUM         4.07   1931
 MINIMUM         0.25   1969
TOTALS           1.18              1.15    0.03     1.35
DAILY AVG.       0.04              0.04    0.00     0.04
DAYS >= .01        12              11.2     0.8       16
DAYS >= .10         2               3.7    -1.7        5
DAYS >= .50         1               0.2     0.8        0
DAYS >= 1.00        0               0.0     0.0        0
GREATEST
 24 HR. TOTAL    0.65   03/23 TO 03/23           03/28 TO 03/28
                                                          03/28 TO 03/28
                                                          03/28 TO 03/28

SNOWFALL (INCHES)
RECORDS
 TOTAL            9.7   1955
TOTALS            0.0               0.7    -0.7      0.6
SINCE 7/1         1.5              10.5    -9.0     16.5
SNOWDEPTH AVG.      0                MM      MM        0
DAYS >= 1.0         0               0.2    -0.2        0
GREATEST
 SNOW DEPTH         0   MM                             0  MM
 24 HR TOTAL      0.0   03/31 TO 03/31           03/28 TO 03/28
                                                          03/28 TO 03/28
                                                          03/28 TO 03/28

DEGREE_DAYS
HEATING TOTAL     489               612    -123      597
 SINCE 7/1       3711              4467    -756     4758
COOLING TOTAL       0                 0       0        0
 SINCE 1/1          0                 0       0        0
.........................................................

WIND (MPH)
AVERAGE WIND SPEED              4.7
HIGHEST WIND SPEED/DIRECTION    31/280    DATE  03/31
HIGHEST GUST SPEED/DIRECTION    40/270    DATE  03/31

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.30
NUMBER OF DAYS FAIR           19
NUMBER OF DAYS PC              8
NUMBER OF DAYS CLOUDY          4

AVERAGE RH (PERCENT)     64

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              0     MIXED PRECIP               0
HEAVY RAIN                1     RAIN                       2
LIGHT RAIN               14     FREEZING RAIN              0
LT FREEZING RAIN          0     HAIL                       0
HEAVY SNOW                0     SNOW                       0
LIGHT SNOW                0     SLEET                      0
FOG                       5     FOG W/VIS <= 1/4 MILE      2
HAZE                      2

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

MARCH 2015 WAS WARMER AND WETTER THAN NORMAL ACROSS SOUTHEAST
WASHINGTON AND THE SOUTH IDAHO PANHANDLE.

THE MONTH STARTED OFF ON A COOL NOTE WITH NORTHERLY FLOW OVER THE
AREA.  SNOW SHOWERS ON THE EVENING OF THE 2ND WERE OBSERVED ON THE
PALOUSE AND CAMAS PRAIRIE.  MULTIPLE SLIDEOFFS WERE REPORTED ON THE
CAMAS PRAIRIE.  A STRONG WARMING TREND FOLLOWED WITH HIGHS WARMING
FROM THE MID 40S ON THE 3RD TO THE LOWER 70S ON THE 10TH IN
LEWISTON.  THE ABOVE NORMAL TEMPERATURED CONTINUED FOR MOST DAYS
DURING THE REMAINDER OF THE MONTH.  OVERALL THE REGION WAS FAIRLY
DRY THROUGH THE 13TH. THIS QUICKLY CHANGED AS A VERY MOIST
SUBTROPICAL AIR MASS BROUGHT RAIN ON THE 14TH AND 15TH. THE PALOUSE
PICKED UP AROUND 0.75 INCHES OF RAIN WITH THE HEAVIEST AMOUNTS OVER
NORTHEAST WASHINGTON AND NORTH IDAHO. THE LEWISTON AREA WAS RAIN
SHADOWED WITH ONLY LIGHT RAIN AMOUNTS OCCURRING. THE REMAINDER OF
THE MONTH SEVERAL SYSTEMS TRACKED THROUGH BRINGING PERIODS OF WINDY
CONDITIONS AND BRIEF WET WEATHER.  THE WETTEST SYSTEM FOR LEWISTON
OCCURRED ON THE 23RD WHERE 0.65 INCHES OF RAIN FELL. THUNDERSTORMS
ALSO DEVELOPED AHEAD OF A COLD FRONT DURING THE LATE EVENING HOURS
ON THE 27TH INTO THE EARLY MORNING HOURS ON THE 28TH. PERIODS OF
WARMER AND DRIER CONDITIONS WERE EXPERIENCED BETWEEN SYSTEMS...SUCH
AS THE 27TH WHERE LEWISTON REACHED A BALMY 76 DEGREES.

SEVERAL RECORDS WERE BROKEN OR TIED DURING THE MONTH. ON THE 10TH
AND 27TH RECORD HIGH TEMPERATURES OF 71 AND 76 DEGREES WERE SET.
RESPECTIVELY. ON THE 14TH...15TH...AND 27TH RECORD WARM LOW TEMPERATURES OF
51...50...AND 48 DEGREES WERE SET RESPECTIVELY.  ON THE 23RD A DAILY
RAINFALL RECORD OF 0.65 INCHES WAS SET.

THE MEAN TEMPERATURE OF 49.0 WAS THE NINTH WARMEST MARCH ON RECORD AT
LEWISTON ID. RECORDS HAVE BEEN KEPT AT THIS SITE SINCE 1881.

$$




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