Climatological Report (Annual)
Issued by NWS Spokane, WA

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000
CXUS56 KOTX 110736 CCA
CLALWS

CLIMATE REPORT
NATIONAL WEATHER SERVICE SPOKANE WA
520 AM PST SAT JAN 01 2022

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

...THE LEWISTON ID AIRPORT CLIMATE SUMMARY FOR THE YEAR OF 2021...

CLIMATE NORMAL PERIOD 1991 TO 2020
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          115   06/29
LOWEST             5   12/31
AVG. MAXIMUM    66.7               64.2     2.5
AVG. MINIMUM    45.0               43.3     1.7
MEAN            55.8               53.8     2.0
DAYS MAX >= 90    70               44.1    25.9
DAYS MAX <= 32    10               12.3    -2.3
DAYS MIN <= 32    70               79.8    -9.8
DAYS MIN <= 0      0                0.3    -0.3

PRECIPITATION (INCHES)
RECORD
 MAXIMUM       21.76   1884
 MINIMUM        7.73   2007
TOTALS          8.62              12.87   -4.25
DAILY AVG.      0.02               0.04   -0.02
DAYS >= .01       97              106.2    -9.2
DAYS >= .10       30               41.4   -11.4
DAYS >= .50        1                3.4    -2.4
DAYS >= 1.00       0                0.2    -0.2
GREATEST
 24 HR. TOTAL   0.51   12/30 TO 12/31

SNOWFALL (INCHES)
RECORDS
 TOTAL          62.2   1916
TOTALS          22.5               13.0     9.5
DAYS >= TRACE     26               11.0    15.0
DAYS >= 1.0        7                4.2     2.8
GREATEST
 24 HR TOTAL    10.8

DEGREE DAYS
HEATING TOTAL   4587               4980    -393
COOLING TOTAL   1378                913     465

FREEZE DATES
RECORD
 EARLIEST     09/17/1965
 LATEST       05/12/1985
EARLIEST                        10/12
LATEST                          04/12
................................................

WIND (MPH)
AVERAGE WIND SPEED              5.7
HIGHEST WIND SPEED/DIRECTION    43/250    DATE  04/10
HIGHEST GUST SPEED/DIRECTION    53/250    DATE  03/28

SKY COVER
AVERAGE SKY COVER           0.38

AVERAGE RH (PERCENT)     53

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              9     MIXED PRECIP               0
HEAVY RAIN                4     RAIN                      15
LIGHT RAIN              109     FREEZING RAIN              0
LT FREEZING RAIN          2     HAIL                       0
HEAVY SNOW                3     SNOW                       7
LIGHT SNOW               27     SLEET                      0
FOG                      77     FOG W/VIS <= 1/4 MILE     31
HAZE                     89

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

$$


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