526
CXUS56 KOTX 022334
CLMGEG
CLIMATE REPORT
NATIONAL WEATHER SERVICE SPOKANE WA
434 PM PDT FRI OCT 02 2026
...............................
...THE SPOKANE WA AIRPORT CLIMATE SUMMARY FOR THE MONTH OF SEPTEMBER 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 99 09/01/2025
LOW 22 09/23/2000
09/24/1926
HIGHEST 84 09/21 MM MM 99 09/01
09/02
LOWEST 38 09/28 MM MM 42 09/26
AVG. MAXIMUM 70.6 73.6 -3.0 80.9
AVG. MINIMUM 49.3 48.6 0.7 56.6
MEAN 59.9 61.1 -1.2 68.8
DAYS MAX >= 90 0 1.4 -1.4 4
DAYS MAX <= 32 0 0.0 0.0 0
DAYS MIN <= 32 0 0.4 -0.4 0
DAYS MIN <= 0 0 0.0 0.0 0
PRECIPITATION (INCHES)
RECORD
MAXIMUM 5.58 1927
MINIMUM T 2012
TOTALS 1.03 0.58 0.45 0.43
DAILY AVG. 0.03 0.02 0.01 0.01
DAYS >= .01 8 4.7 3.3 5
DAYS >= .10 2 1.8 0.2 1
DAYS >= .50 1 0.2 0.8 0
DAYS >= 1.00 0 0.0 0.0 0
GREATEST
24 HR. TOTAL 0.52 09/13 TO 09/13 0.35
SNOWFALL (INCHES)
RECORDS
TOTAL 3.3 2019
TOTALS 0.0 0.1 -0.1 0.0
SINCE 7/1 0.0 0.1 -0.1 MM
SNOWDEPTH AVG. 0 0
DAYS >= 1.0 0 0.1 -0.1 0
GREATEST
SNOW DEPTH 0 0 MM
24 HR TOTAL MM 0.0
DEGREE DAYS
HEATING TOTAL 159 162 -3 49
SINCE 7/1 179 216 -37 MM
COOLING TOTAL 13 45 -32 170
SINCE 1/1 605 514 91 MM
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WIND (MPH)
AVERAGE WIND SPEED 7.2
HIGHEST WIND SPEED/DIRECTION 33/220 DATE 09/25
HIGHEST GUST SPEED/DIRECTION 43/230 DATE 09/25
SKY COVER
POSSIBLE SUNSHINE (PERCENT) MM
AVERAGE SKY COVER 0.59
NUMBER OF DAYS FAIR 5
NUMBER OF DAYS PC 16
NUMBER OF DAYS CLOUDY 9
AVERAGE RH (PERCENT) 58
WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM 2 MIXED PRECIP 0
HEAVY RAIN 1 RAIN 3
LIGHT RAIN 11 FREEZING RAIN 0
LT FREEZING RAIN 0 HAIL 0
HEAVY SNOW 0 SNOW 0
LIGHT SNOW 0 SLEET 0
FOG 8 FOG W/VIS <= 1/4 MILE 0
HAZE 8
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
SEPTEMBER 2026 BROUGHT COOLER AND WETTER THAN NORMAL CONDITIONS TO
NORTHEAST WASHINGTON INTO THE NORTH IDAHO PANHANDLE. THE FIRST HALF
OF THE MONTH WAS ACTIVE WITH SEVERAL ROUNDS OF PRECIPITATION. ON THE
2ND ISOLATED THUNDERSTORMS OCCURRED WITH ONE STORM OVER THE SPOKANE
AREA PRODUCING BRIEF RAIN AND BLOWING DUST WITH A PEAK WIND GUST OF
40 MPH. ON THE 6TH THUNDERSTORMS WITH ABUNDANT LIGHTNING TRACKED
FROM DAVENPORT UP THROUGH IONE, AND OVER THE IDAHO PANHANDLE. ON
THE 12TH AND 13TH WIDESPREAD RAIN FELL ACROSS THE REGION WITH RAIN
AMOUNTS OF 0.30-0.80 INCHES. ON THE 17TH A GUST FRONT PROPAGATED
NORTH FROM SOUTHERN WASHINGTON INTO THE COLUMBIA BASIN PRODUCED
BRIEF BLOWING DUST WITH LOW VISIBILITY IN THE RITZVILLE AREA. ON THE
25TH A STRONG COLD FRONT BROUGHT BRIEF RAIN IN THE MORNING FOLLOWED
BY WINDY CONDITIONS WITH GUSTS RANGING FROM 35-45 MPH. A DUST STORM
CLOSED I-90 DUE TO ZERO VISIBILITY AND MULTIPLE COLLISIONS BLOCKING
THE ROADWAY NEAR RITZVILLE. SR 261 ALSO CLOSED NEAR HARDER ROAD TO I-
90 JUNCTION IN RITZVILLE.
NO RECORDS WERE SET DURING THE MONTH AT THE SPOKANE AIRPORT.
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