Climatological Report (Monthly) Issued by NWS Spokane, WA
000
CXUS46 KOTX 011143
CLMLWS
CLIMATE REPORT
NATIONAL WEATHER SERVICE SPOKANE WA
443 AM PDT THU JUN 01 2023
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...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
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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
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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.
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