301
CXUS46 KOTX 011630
CLMLWS

CLIMATE REPORT
NATIONAL WEATHER SERVICE SPOKANE WA
930 AM PDT WED APR 01 2026

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

...THE LEWISTON ID AIRPORT CLIMATE SUMMARY FOR THE MONTH OF MARCH 2026...

CLIMATE NORMAL PERIOD 1991 TO 2020
CLIMATE RECORD PERIOD 1881 TO 2026

WEATHER         OBSERVED          NORMAL  DEPART   LAST YEAR`S
                VALUE   DATE(S)   VALUE   FROM     VALUE DATE(S)
                                          NORMAL
................................................................
TEMPERATURE (F)
RECORD
 HIGH             80   03/30/1923
 LOW               2   03/05/1955
HIGHEST           69   03/20         MM      MM       80  03/26
LOWEST            29   03/10         MM      MM       30  03/06
                                                          03/19
AVG. MAXIMUM    55.8               55.1     0.7     58.0
AVG. MINIMUM    37.9               35.7     2.2     39.2
MEAN            46.9               45.4     1.5     48.6
DAYS MAX >= 90     0                0.0     0.0        0
DAYS MAX <= 32     0                0.2    -0.2        0
DAYS MIN <= 32     7                9.1    -2.1        7
DAYS MIN <= 0      0                0.0     0.0        0

PRECIPITATION (INCHES)
RECORD
 MAXIMUM        4.07   1931
 MINIMUM        0.25   1969
TOTALS          2.81               1.30    1.51     1.18
DAILY AVG.      0.09               0.04    0.05     0.04
DAYS >= .01        9               11.7    -2.7       12
DAYS >= .10        5                4.0     1.0        5
DAYS >= .50        3                0.3     2.7        0
DAYS >= 1.00       0                0.0     0.0        0
GREATEST
 24 HR. TOTAL   1.03   03/12 TO 03/13               0.33

SNOWFALL (INCHES)
RECORDS
 TOTAL           9.7   1955
TOTALS           0.0                0.8    -0.8      0.0
SINCE 7/1        0.1               12.7   -12.6       MM
SNOWDEPTH AVG.     0                                   0
DAYS >= 1.0        0                0.2    -0.2        0
GREATEST
 SNOW DEPTH        0                                   0  MM
 24 HR TOTAL      MM                                  MM

DEGREE DAYS
HEATING TOTAL    553                608     -55      503
 SINCE 7/1      3679               4325    -646       MM
COOLING TOTAL      0                  0       0        1
 SINCE 1/1         0                  0       0       MM
................................................................

WIND (MPH)
AVERAGE WIND SPEED              5.7
HIGHEST WIND SPEED/DIRECTION    40/220    DATE  03/12
HIGHEST GUST SPEED/DIRECTION    55/230    DATE  03/12

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.48
NUMBER OF DAYS FAIR           12
NUMBER OF DAYS PC             10
NUMBER OF DAYS CLOUDY          9

AVERAGE RH (PERCENT)     65

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

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

$$

MARCH 2026 BROUGHT SLIGHTLY WARMER THAN NORMAL TEMPERATURES AND
ABOVE NORMAL PRECIPITATION TO SOUTHEAST WASHINGTON INTO THE SOUTH
IDAHO PANHANDLE. IT WAS THE 6TH WETTEST MARCH ON RECORD IN LEWISTON
WITH 2.81 INCHES.

THE MONTH BROUGHT SEVERAL WEATHER CHANGES AS IS TYPICAL FOR THE
INLAND NW START OF SPRING. ON THE 8TH A STRONG COLD FRONT PASSAGE
BROUGHT WINDY CONDITIONS WITH A PEAK WIND GUST OF 54 MPH AT THE
PULLMAN AIRPORT.  THIS ALSO BROUGHT A SIGNIFICANT TEMPERATURE DROP
WITH HIGHS IN THE MID 60S ON THE 8TH DROPPING INTO THE MID 40S ON
THE 9TH IN LEWISTON.  BUT THE REAL WHOPPER OF THE MONTH CAME WITH A
STRENGTHENING WEATHER SYSTEM AS IT PASSED THROUGH THE REGION LATE ON
THE 11TH INTO THE 12TH.  A WIND STORM RESULTED WITH NUMEROUS POWER
OUTAGES, AND DOWNED TREES.  PEAK WIND GUSTS INCLUDE 68 MPH SHIRROD
HILL, 67 MPH ALDER RIDGE, 64 MPH PULLMAN AIRPORT, 58 MPH MISSION
CREEK, AND 55 MPH AT LEWISTON AIRPORT. FOLLOWING THE WIND STORM, A
STALLED BOUNDARY BROUGHT AN ABUNDANCE OF PRECIPITATION INTO THE
MORNING OF THE 14TH. THE PULLMAN AND MOSCOW AREA WAS THE WARMER SIDE
OF THIS BOUNDARY RECEIVING MOSTLY RAIN, WITH SMALL STREAM FLOODING
OCCURRING IN THE AREA.  PARADISE CREEK REACHED IT`S HIGHEST LEVEL ON
RECORD AT 11.54 FEET FLOODING SEVERAL ROADS, WITH A SECTION OF
HIGHWAY 95 REPORTING STANDING WATER.  FLOODING ALSO OCCURRED ALONG
THE POTLATCH RIVER NEAR JULIETTA WITH A DISASTER DECLARATION FOR THE
CITY PARK. IN PULLMAN FLOODING OCCURRED AROUND GRANDE AVENUE AND
MAIN STREET, WITH WATER FLOODING A BUSINESS. ON US12 LANDSLIDES
THREE LANDSLIDES OCCURRED NEAR THE TOWNS OF JULIAETTA AND LENORE. ON
SR194 ABOUT FIVE MILES WEST OF PULLMAN A WASHOUT CAUSED BY A FAILED
CULVERT REDUCED TRAFFIC TO ONE LANE. AREAS NORTH OF PULLMAN AND
MOSCOW RECEIVED MORE SIGNIFICANT SNOW, WITH 22 INCHES IN MULLAN,
13 INCHES AVERY, 11 INCHES NEAR SAINT MARIES AND 4 INCHES IN ROSALIA.

ONE RECORD WAS DURING THE MONTH AT THE LEWISTON AIRPORT WHEN 0.66
INCHES OF PRECIPITATION FELL ON THE 13TH.