000
CXUS46 KOTX 020114
CLMLWS

CLIMATE REPORT
NATIONAL WEATHER SERVICE SPOKANE WA
613 PM PDT FRI SEP 01 2023

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

...THE LEWISTON ID AIRPORT CLIMATE SUMMARY FOR THE MONTH OF AUGUST 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            115   08/04/1961
 LOW              41   08/20/1945
                       08/24/1992
HIGHEST          109   08/15         MM      MM      106  08/31
LOWEST            54   08/24         MM      MM       55  08/28
                       08/31
AVG. MAXIMUM    90.6               90.1     0.5     95.6
AVG. MINIMUM    63.7               60.3     3.4     64.6
MEAN            77.2               75.2     2.0     80.1
DAYS MAX >= 90    16               16.9    -0.9       26
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        2.96   1989
 MINIMUM        0.00   1917
TOTALS          0.83               0.51    0.32     0.16
DAILY AVG.      0.03               0.02    0.01     0.01
DAYS >= .01        7                3.4     3.6        4
DAYS >= .10        3                1.3     1.7        1
DAYS >= .50        0                0.2    -0.2        0
DAYS >= 1.00       0                0.1    -0.1        0
GREATEST
 24 HR. TOTAL   0.42   08/22 TO 08/22               0.13

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

DEGREE DAYS
HEATING TOTAL      1                  6      -5        0
 SINCE 7/1         1                  7      -6       MM
COOLING TOTAL    388                322      66      479
 SINCE 1/1      1184                806     378       MM
................................................................

WIND (MPH)
AVERAGE WIND SPEED              4.8
HIGHEST WIND SPEED/DIRECTION    30/150    DATE  08/26
HIGHEST GUST SPEED/DIRECTION    37/300    DATE  08/18
                                37/150          08/26

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.20
NUMBER OF DAYS FAIR           25
NUMBER OF DAYS PC              3
NUMBER OF DAYS CLOUDY          3

AVERAGE RH (PERCENT)     43

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              4     MIXED PRECIP               0
HEAVY RAIN                2     RAIN                       1
LIGHT RAIN                7     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                     13

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

$$

AUGUST 2023 BROUGHT WARMER AND WETTER THAN NORMAL TEMPERATURES
ACROSS SOUTHEAST WASHINGTON INTO THE SOUTH IDAHO PANHANDLE. THE
FIRST HALF OF THE MONTH STARTED OFF QUIET AS THUNDERSTORMS ACTIVITY
MISSED THE REGION TO BOTH THE NORTH AND SOUTH.  THEN SEVERAL
SIGNIFICANT WEATHER EVENTS OCCURRED, STARTING WITH THE HOTTEST DAYS
OF THE SUMMER FROM THE 14TH THROUGH THE 17TH.  HIGH TEMPERATURES IN
LEWISTON EACH DAY RANGED FROM 105 TO 109F. KAMIAH WAS HOTTEST
LOCATION REACHING 111F. THEN ON THE 18TH A STRONG DRY COLD FRONT LED
TO RAPID FIRE SPREAD ON THE WINOWA FIRE ON THE PALOUSE, BURNING 2525
ACRES. ONE PRIMARY STRUCTURE AND 24 OUTBUILDINGS WERE LOST IN THE
FIRE. RELATIVE HUMIDITY WAS EXCEPTIONALLY LOW...DROPPING TO BETWEEN
5-10 PERCENT WITH WEST WINDS GUSTING TO AROUND 35 MPH. SIMILAR
CONDITIONS IN THE SPOKANE AREA LED TO TWO LARGE FIRES WHICH
DESTROYED HUNDREDS OF HOMES AROUND MEDICAL LAKE, SILVER LAKE, AND
ELK.  BEHIND THE FRONT NORTH WINDS BROUGHT IN SMOKE FROM CANADA AS
WELL AS LOCAL FIRES. AIR QUALITY REACHED UNHEALTHY TO VERY UNHEALTHY
LEVELS.  THEN ON THE 22ND MUCH NEEDED RAIN FELL OVER THE REGION.
WIDESPREAD RAIN AMOUNTS OF 0.25-0.50 INCHES WERE OBSERVED WITH
LOCALLY HIGHER AMOUNTS ESPECIALLY IN THE MOUNTAINS. ALDER RIDGE IN
THE BLUE MOUNTAINS RECEIVED 1.37 INCHES. ON THE 29TH, ABUNDANT
LIGHTNING STRUCK THE REGION AS A WEATHER SYSTEM PASSED THROUGH. MOST
OF THE STORMS WERE QUICK MOVING ONLY PUTTING DOWN LIGHT TO MODERATE
RAIN. HOWEVER STEADY RAIN PERSISTED INTO THE 30TH OVER THE IDAHO
PANHANDLE WITH KELLOGG RECEIVING 1.58 INCHES.

SEVERAL RECORDS WERE BROKEN OR TIED DURING THE MONTH AT THE LEWISTON
AIRPORT.  THIS INCLUDES A RECORD HIGH OF 109F ON THE 15TH WHICH
BROKE A RECORD FOR THE DATE.  A RECORD HIGH OF 108F WAS TIED ON THE
16TH.  THEN ON AUGUST 21ST THE 0.18 INCHES OF PRECIPITATION THAT
FELL TIED A RECORD FOR THE DATE.