Climatological Report (Monthly)
Issued by NWS
Issued by NWS
576
CXUS56 KOTX 011318
CLMOMK
CLIMATE REPORT
NATIONAL WEATHER SERVICE SPOKANE WA
618 AM PDT THU OCT 01 2026
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...THE OMAK WA AIRPORT CLIMATE SUMMARY FOR THE MONTH OF SEPTEMBER 2026...
CLIMATE NORMAL PERIOD 1991 TO 2020
CLIMATE RECORD PERIOD 1909 TO 2026
WEATHER OBSERVED NORMAL DEPART LAST YEAR`S
VALUE DATE(S) VALUE FROM VALUE DATE(S)
NORMAL
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TEMPERATURE (F)
RECORD
HIGH 104 09/03/2025
LOW 20 09/27/1945
HIGHEST 86 09/21 MM MM 104 09/03
LOWEST 33 09/28 MM MM 42 09/22
AVG. MAXIMUM 75.7 78.2 -2.5 84.8
AVG. MINIMUM 48.5 48.4 0.1 54.4
MEAN 62.1 63.3 -1.2 69.6
DAYS MAX >= 90 0 3.3 -3.3 5
DAYS MAX <= 32 0 0.0 0.0 0
DAYS MIN <= 32 0 0.7 -0.7 0
DAYS MIN <= 0 0 0.0 0.0 0
PRECIPITATION (INCHES)
RECORD
MAXIMUM 2.90 2019
MINIMUM 0.00 1990
TOTALS 0.53 0.40 0.13 0.12
DAILY AVG. 0.02 0.01 0.01 0.00
DAYS >= .01 5 3.8 1.2 2
DAYS >= .10 1 1.3 -0.3 0
DAYS >= .50 0 0.1 -0.1 0
DAYS >= 1.00 0 0.0 0.0 0
GREATEST
24 HR. TOTAL 0.40 09/13 TO 09/13 0.09
DEGREE DAYS
HEATING TOTAL 101 117 -16 26
SINCE 7/1 114 137 -23 MM
COOLING TOTAL 21 66 -45 171
SINCE 1/1 816 702 114 MM
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WIND (MPH)
AVERAGE WIND SPEED 7.8
HIGHEST WIND SPEED/DIRECTION 33/160 DATE 09/25
HIGHEST GUST SPEED/DIRECTION 44/170 DATE 09/25
SKY COVER
POSSIBLE SUNSHINE (PERCENT) MM
AVERAGE SKY COVER 0.24
NUMBER OF DAYS FAIR 21
NUMBER OF DAYS PC 6
NUMBER OF DAYS CLOUDY 3
AVERAGE RH (PERCENT) 54
WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM 0 MIXED PRECIP 0
HEAVY RAIN 0 RAIN 1
LIGHT RAIN 8 FREEZING RAIN 0
LT FREEZING RAIN 0 HAIL 0
HEAVY SNOW 0 SNOW 0
LIGHT SNOW 0 SLEET 0
FOG 1 FOG W/VIS <= 1/4 MILE 0
HAZE 0
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
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