Climatological Report (Annual)
Issued by NWS Spokane, WA
Issued by NWS Spokane, WA
000 CXUS56 KOTX 090213 CLALWS CLIMATE REPORT NATIONAL WEATHER SERVICE SPOKANE WA 611 PM PST FRI JAN 08 2021 ................................... ...THE LEWISTON ID AIRPORT CLIMATE SUMMARY FOR THE YEAR OF 2020... CLIMATE NORMAL PERIOD 1981 TO 2010 CLIMATE RECORD PERIOD 1881 TO 2021 WEATHER OBSERVED NORMAL DEPART VALUE DATE(S) VALUE FROM NORMAL ................................................ TEMPERATURE (F) RECORD HIGH 117 07/27/1939 LOW -23 12/13/1919 HIGHEST 105 07/31 07/30 LOWEST 13 01/15 AVG. MAXIMUM 61.0 63.5 -2.5 AVG. MINIMUM 41.2 42.5 -1.3 MEAN 51.1 53.0 -1.9 DAYS MAX >= 90 19 40.1 -21.1 DAYS MAX <= 32 3 12.7 -9.7 DAYS MIN <= 32 80 75.9 4.1 DAYS MIN <= 0 0 0.7 -0.7 PRECIPITATION (INCHES) RECORD MAXIMUM 21.76 1884 MINIMUM 7.73 2007 TOTALS 14.50 12.31 2.19 DAILY AVG. 0.05 0.03 0.02 DAYS >= .01 94 102.8 -8.8 DAYS >= .10 41 39.7 1.3 DAYS >= .50 6 3.1 2.9 DAYS >= 1.00 1 0.2 0.8 GREATEST 24 HR. TOTAL 1.24 SNOWFALL (INCHES) RECORDS TOTAL 62.2 1916 TOTALS 16.6 10.5 6.1 DAYS >= TRACE 20 10.6 9.4 DAYS >= 1.0 5 3.9 1.1 GREATEST 24 HR TOTAL 4.8 DEGREE DAYS HEATING TOTAL 4630 5167 -537 COOLING TOTAL 475 807 -332 FREEZE DATES RECORD EARLIEST 09/17/1965 LATEST 05/12/1985 EARLIEST 10/22 LATEST 04/17 ................................................ WIND (MPH) AVERAGE WIND SPEED 5.7 HIGHEST WIND SPEED/DIRECTION 38/190 DATE 02/01 HIGHEST GUST SPEED/DIRECTION 51/260 DATE 10/13 SKY COVER AVERAGE SKY COVER 0.44 AVERAGE RH (PERCENT) 60 WEATHER CONDITIONS. NUMBER OF DAYS WITH THUNDERSTORM 13 MIXED PRECIP 0 HEAVY RAIN 5 RAIN 26 LIGHT RAIN 115 FREEZING RAIN 0 LT FREEZING RAIN 0 HAIL 0 HEAVY SNOW 0 SNOW 2 LIGHT SNOW 20 SLEET 0 FOG 84 FOG W/VIS <= 1/4 MILE 32 HAZE 37 - INDICATES NEGATIVE NUMBERS. R INDICATES RECORD WAS SET OR TIED. MM INDICATES DATA IS MISSING. T INDICATES TRACE AMOUNT. $$