Climatological Report (Monthly)
Issued by NWS Spokane, WA

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CXUS46 KOTX 011146
CLMLWS


CLIMATE REPORT
NATIONAL WEATHER SERVICE SPOKANE, WA
439 AM PDT WED APR 1 2020

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

...THE LEWISTON ID AIRPORT CLIMATE SUMMARY FOR THE MONTH OF MARCH 2020...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1881 TO 2020

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            64   03/22        MM      MM       65  03/31
                        03/05                             03/20
LOWEST             26   03/17        MM      MM        9  03/04
AVG. MAXIMUM     54.1              54.9    -0.8     47.9
AVG. MINIMUM     34.4              35.6    -1.2     28.5
MEAN             44.2              45.3    -1.1     38.2
DAYS MAX >= 90      0               0.0     0.0        0
DAYS MAX <= 32      0               0.1    -0.1        5
DAYS MIN <= 32     12               8.0     4.0       18
DAYS MIN <= 0       0               0.0     0.0        0

PRECIPITATION (INCHES)
RECORD
 MAXIMUM         4.07   1931
 MINIMUM         0.25   1969
TOTALS           0.83              1.15   -0.32     0.89
DAILY AVG.       0.03              0.04   -0.01     0.03
DAYS >= .01         8              11.2    -3.2       10
DAYS >= .10         5               3.7     1.3        3
DAYS >= .50         0               0.2    -0.2        0
DAYS >= 1.00        0               0.0     0.0        0
GREATEST
 24 HR. TOTAL    0.22   03/30 TO 03/30              0.26

SNOWFALL (INCHES)
RECORDS
 TOTAL            9.7   1955
TOTALS            3.5               0.7     2.8      1.7
SINCE 7/1        15.0              10.5     4.5     33.5
SNOWDEPTH AVG.      0                MM      MM        2
DAYS >= 1.0         1               0.2     0.8        1
GREATEST
 SNOW DEPTH         3   03/15                          7  03/08
                                                          03/07
                                                          03/06
 24 HR TOTAL      3.5   03/14 TO 03/14               1.0

DEGREE_DAYS
HEATING TOTAL     637               612      25      823
 SINCE 7/1       4311              4467    -156     4658
COOLING TOTAL       0                 0       0        0
 SINCE 1/1          0                 0       0        0
.................................................................

WIND (MPH)
AVERAGE WIND SPEED              5.0
HIGHEST WIND SPEED/DIRECTION    32/290    DATE  03/11
HIGHEST GUST SPEED/DIRECTION    40/300    DATE  03/11

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.50
NUMBER OF DAYS FAIR           12
NUMBER OF DAYS PC             11
NUMBER OF DAYS CLOUDY          8

AVERAGE RH (PERCENT)     58

WEATHER CONDITIONS. NUMBER OF DAYS WITH
  0
  0
  0
  0
  1
  0
  1
HAZE                      8

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

$$

MARCH 2020 BROUGHT COOLER AND DRIER THAN NORMAL CONDITIONS TO
SOUTHEAST WASHINGTON INTO THE SOUTH IDAHO PANHANDLE.  DESPITE THE
DRY MARCH THERE WAS SEVERAL NOTEWORTHY WEATHER EVENTS.  ON THE 4TH A
STRONG COLD FRONT PASSAGE PASSED EARLY IN THE MORNING. PEAK WIND
GUSTS INCLUDE 61 MPH ALDER RIDGE AND 44 MPH POMEROY.  ON THE 14TH A
COLD CANADIAN AIR MASS MOVED INTO THE REGION WITH A BAND OF SNOW
OVER THE AREA. LEWISTON RECEIVED 3.5 INCHES WHILE PULLMAN AND MOSCOW
ONLY RECEIVED UP TO AN INCH.  SPRING LIKE CONDITIONS QUICKLY
FOLLOWED WITH TEMPERATURES FROM THE 19TH THROUGH THE 22ND WARMING
INTO THE LOW TO MID 60S WITH LOTS OF SUNSHINE.  WINTER RETURNED ON
THE 25TH WITH COLD AND UNSTABLE CONDITIONS OVER THE AREA. THIS
BROUGHT SNOW TO THE PALOUSE AND CENTRAL PANHANDLE MOUNTAINS WITH 3
TO 5 INCHES NEAR HARVARD, AND 2 INCHES IN AVERY.  AFTER A BRIEF
WARMUP WITH HIGHS NEAR 60F ON THE 28TH ANOTHER STRONG COLD ARRIVED
ON THE 30TH.  THIS ONE BROUGHT ISOLATED THUNDERSTORMS ON THE CAMAS
PRAIRIE, FOLLOWED BY SNOW.

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


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