National Weather Service Weather Forecast Office

• Home
• Site Map
• News
• Organization
• Search for: NWS All NOAA 

000
CXUS46 KOTX 021915
CLMLWS

CLIMATE REPORT
NATIONAL WEATHER SERVICE SPOKANE WA
1115 AM PST TUE JAN 02 2024

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

...THE LEWISTON ID AIRPORT CLIMATE SUMMARY FOR THE MONTH OF DECEMBER 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             67   12/12/1921
 LOW             -23   12/13/1919
HIGHEST           61   12/05         MM      MM       55  12/27
LOWEST            27   12/01         MM      MM        5  12/22
                       12/17
                       12/24
AVG. MAXIMUM    46.6               40.8     5.8     37.7
AVG. MINIMUM    34.8               29.5     5.3     26.3
MEAN            40.7               35.2     5.5     32.0
DAYS MAX >= 90     0                0.0     0.0        0
DAYS MAX <= 32     0                4.9    -4.9        7
DAYS MIN <= 32    12               20.4    -8.4       24
DAYS MIN <= 0      0                0.1    -0.1        0

PRECIPITATION (INCHES)
RECORD
 MAXIMUM        4.88   1882
 MINIMUM        0.14   1970
TOTALS          1.22               1.13    0.09     1.19
DAILY AVG.      0.04               0.04    0.00     0.04
DAYS >= .01       15               11.1     3.9       16
DAYS >= .10        3                4.1    -1.1        4
DAYS >= .50        0                0.2    -0.2        0
DAYS >= 1.00       0                0.0     0.0        0
GREATEST
 24 HR. TOTAL   0.36   12/10 TO 12/10               0.22

SNOWFALL (INCHES)
RECORDS
 TOTAL          19.7   2016
TOTALS           0.5                4.1    -3.6      5.0
SINCE 7/1        0.5                5.4    -4.9       MM
SNOWDEPTH AVG.     0                                   1
DAYS >= 1.0        0                1.3    -1.3       MM
GREATEST
 SNOW DEPTH        1   12/01                           3  12/24
 24 HR TOTAL      MM                                 5.0

DEGREE DAYS
HEATING TOTAL    747                925    -178     1015
 SINCE 7/1      1809               2107    -298       MM
COOLING TOTAL      0                  0       0        0
 SINCE 1/1      1321                912     409       MM
................................................................

WIND (MPH)
AVERAGE WIND SPEED              6.3
HIGHEST WIND SPEED/DIRECTION    28/170    DATE  12/09
HIGHEST GUST SPEED/DIRECTION    35/170    DATE  12/09

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.57
NUMBER OF DAYS FAIR           10
NUMBER OF DAYS PC             11
NUMBER OF DAYS CLOUDY         10

AVERAGE RH (PERCENT)     72

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              0     MIXED PRECIP               2
HEAVY RAIN                0     RAIN                       3
LIGHT RAIN               16     FREEZING RAIN              0
LT FREEZING RAIN          0     HAIL                       0
HEAVY SNOW                0     SNOW                       0
LIGHT SNOW                2     SLEET                      0
FOG                      13     FOG W/VIS <= 1/4 MILE      9
HAZE                      5

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

$$

DECEMBER 2023 BROUGHT WARMER THAN NORMAL TEMPERATURES TO SOUTHEAST
WASHINGTON AND THE LEWISTON AREA. PRECIPITATION WAS ALSO ABOVE
NORMAL EXCEPT IN THE CENTRAL PANHANDLE MOUNTAINS. FOR LEWISTON IT
WAS THE 6TH WARMEST DECEMBER ON RECORD. ON THE 1ST SNOW CHANGED TO
RAIN WITH ACCUMULATIONS RANGING FROM 1-3" IN THE PALOUSE WITH A HALF
INCH IN LEWISTON.  FROM THE 2ND THROUGH THE 7TH MUCH WARMER
CONDITIONS WERE OBSERVED WITH A PAIR OF ATMOSPHERIC RIVERS. LEWISTON
REACHED 61F ON THE 5TH WITH A LOW OF 50F. THE AVERAGE TEMPERATURE
FOR THIS DATE WAS 20 DEGREES ABOVE NORMAL. THE HEAVIEST RAIN WAS
FOCUSED NORTH OF THE AREA ACROSS NE WASHINGTON AND NORTH IDAHO
PANHANDLE. A COOLER STORM ARRIVED ON THE 9TH THROUGH THE MORNING OF
THE 10TH WITH WIDESPREAD PRECIPITATION. WET SNOW FELL ON THE PALOUSE
AND ST MARIES AREAS WITH 2" IN PULLMAN, 6" MOSCOW AND KELLOGG, AND
10" NEAR ST MARIES. THE REMAINDER OF THE MONTH BROUGHT MUCH QUIETER
WEATHER WITH PERIODS OF LIGHT RAIN.

THE WARM SPELL ON THE 5TH AND 6TH SET SEVERAL TEMPERATURE RECORDS.
THIS INCLUDES A RECORD HIGH TEMPERATURE OF 61F ON THE 5TH, AND
RECORD WARM LOW TEMPERATURES OF 50F AND 48F ON THE 5TH AND 6TH
RESPECTIVELY.