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000
CXUS46 KOTX 011143
CLMLWS

CLIMATE REPORT
NATIONAL WEATHER SERVICE SPOKANE WA
443 AM PDT THU JUN 01 2023

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

...THE LEWISTON ID AIRPORT CLIMATE SUMMARY FOR THE MONTH OF MAY 2023...

CLIMATE NORMAL PERIOD 1991 TO 2020
CLIMATE RECORD PERIOD 1881 TO 2023

WEATHER         OBSERVED          NORMAL  DEPART   LAST YEAR`S
                VALUE   DATE(S)   VALUE   FROM     VALUE DATE(S)
                                          NORMAL
................................................................
TEMPERATURE (F)
RECORD
 HIGH            104   05/28/1934
 LOW              23   05/01/1954
HIGHEST           95   05/20         MM      MM       81  05/26
LOWEST            43   05/07         MM      MM       36  05/10
                       05/10
AVG. MAXIMUM    79.6               72.0     7.6     66.0
AVG. MINIMUM    53.6               48.1     5.5     46.3
MEAN            66.6               60.0     6.6     56.2
DAYS MAX >= 90     5                1.0     4.0        0
DAYS MAX <= 32     0                0.0     0.0        0
DAYS MIN <= 32     0                0.0     0.0        0
DAYS MIN <= 0      0                0.0     0.0        0

PRECIPITATION (INCHES)
RECORD
 MAXIMUM        3.78   1978
 MINIMUM           T   1924
TOTALS          0.71               1.69   -0.98     1.91
DAILY AVG.      0.02               0.05   -0.03     0.06
DAYS >= .01        9               10.6    -1.6       15
DAYS >= .10        1                5.6    -4.6        7
DAYS >= .50        0                0.6    -0.6        1
DAYS >= 1.00       0                0.1    -0.1        0
GREATEST
 24 HR. TOTAL   0.44   05/04 TO 05/05               0.54

SNOWFALL (INCHES)
RECORDS
 TOTAL           0.3   1916
TOTALS           0.0                0.0     0.0      0.0
SINCE 7/1       11.9               12.7    -0.8       MM
SNOWDEPTH AVG.     0                                   0
DAYS >= 1.0        0                0.0     0.0       MM
GREATEST
 SNOW DEPTH        0                                   0  MM
 24 HR TOTAL      MM                                 0.0

DEGREE DAYS
HEATING TOTAL     66                187    -121      272
 SINCE 7/1      4885               4921     -36       MM
COOLING TOTAL    119                 34      85        6
 SINCE 1/1       130                 36      94       MM
................................................................

WIND (MPH)
AVERAGE WIND SPEED              5.4
HIGHEST WIND SPEED/DIRECTION    40/180    DATE  05/07
HIGHEST GUST SPEED/DIRECTION    50/180    DATE  05/07

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.23
NUMBER OF DAYS FAIR           21
NUMBER OF DAYS PC              8
NUMBER OF DAYS CLOUDY          2

AVERAGE RH (PERCENT)     53

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              5     MIXED PRECIP               0
HEAVY RAIN                0     RAIN                       2
LIGHT RAIN               12     FREEZING RAIN              0
LT FREEZING RAIN          0     HAIL                       0
HEAVY SNOW                0     SNOW                       0
LIGHT SNOW                0     SLEET                      0
FOG                       3     FOG W/VIS <= 1/4 MILE      0
HAZE                      2

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

MAY 2023 BROUGHT WARMER THAN NORMAL TEMPERATURES AND MAINLY BELOW
NORMAL PRECIPITATION TO SOUTHEAST WASHINGTON INTO THE SOUTH IDAHO
PANHANDLE. THERE WERE SEVERAL ROUNDS OF SHOWERS AND THUNDERSTORMS
DURING THE MONTH. ON THE 3RD A SEVERE THUNDERSTORM NEAR HARVARD
BROUGHT A WIND GUST OF 69 MPH. ON THE 5TH HEAVY RAIN FROM
THUNDERSTORMS LED TO SEVERE DAMAGE TO EAGLE CREEK ROAD IN NEZ PERCE
COUNTY NINE MILES SOUTH-SOUTHEAST OF WAHA.  ON THE 16TH AND 21ST
STRONG THUNDERSTORMS PRODUCED FREQUENT LIGHTNING AND HEAVY RAIN.  ON
THE 16TH SAND ROAD NEAR MOSCOW WAS WASHED OUT. ON THE 21ST A SPOTTER
NEAR ASOTIN RECORDED 0.42 INCHES OF RAIN IN 10-15 MINUTES.

THE OTHER STORY DURING THE MONTH WAS THE WARM TEMPERATURES. VERY
WARM CONDITIONS OCCURRED DURING THE FIRST THREE WEEKS WITH SEVERAL
DAYS IN THE 80S TO LOW 90S IN LEWISTON.  ON THE 19TH AND 20TH
LEWISTON REACHED 92F AND 95F RESPECTIVELY, BOTH OF WHICH BROKE
RECORDS FOR THE DATE.

$$