000
CXUS46 KOTX 011053
CLMLWS


CLIMATE REPORT
NATIONAL WEATHER SERVICE SPOKANE, WA
340 AM PDT MON OCT 1 2012

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

...THE LEWISTON ID AIRPORT CLIMATE SUMMARY FOR THE MONTH OF SEPTEMBER 2012...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1881 TO 2012

WEATHER         OBSERVED          NORMAL  DEPART  LAST YEAR`S
                 VALUE   DATE(S)  VALUE   FROM    VALUE  DATE(S)
                                          NORMAL
................................................................
TEMPERATURE (F)
RECORD
 HIGH             108   09/06/1944
 LOW               27   09/24/1926
HIGHEST            97   09/08        MM      MM      100  09/24
LOWEST             41   09/12        MM      MM       43  09/29
AVG. MAXIMUM     83.9              78.2     5.7     85.4
AVG. MINIMUM     52.8              51.0     1.8     53.5
MEAN             68.3              64.6     3.7     69.4
DAYS MAX >= 90      3               3.9    -0.9       13
DAYS MAX <= 32      0               0.0     0.0        0
DAYS MIN <= 32      0               0.1    -0.1        0
DAYS MIN <= 0       0               0.0     0.0        0

PRECIPITATION (INCHES)
RECORD
 MAXIMUM         4.37   1940
 MINIMUM            T   1999
TOTALS              T              0.67   -0.67     0.14
DAILY AVG.          T              0.02   -0.02     0.00
DAYS >= .01         0               4.9    -4.9        2
DAYS >= .10         0               2.3    -2.3        0
DAYS >= .50         0               0.2    -0.2        0
DAYS >= 1.00        0               0.0     0.0        0
GREATEST
 24 HR. TOTAL       T   09/15 TO 09/15           09/25 TO 09/25

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

DEGREE_DAYS
HEATING TOTAL      12                99     -87       22
 SINCE 7/1         12               114    -102       24
COOLING TOTAL     120                87      33      162
 SINCE 1/1       1033               804     229      734
.................................................

WIND (MPH)
AVERAGE WIND SPEED              3.3
HIGHEST WIND SPEED/DIRECTION    31/290    DATE  09/09
HIGHEST GUST SPEED/DIRECTION    40/280    DATE  09/09

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.00
NUMBER OF DAYS FAIR           30
NUMBER OF DAYS PC              0
NUMBER OF DAYS CLOUDY          0

AVERAGE RH (PERCENT)     37

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              0     MIXED PRECIP               0
HEAVY RAIN                0     RAIN                       0
LIGHT RAIN                0     FREEZING RAIN              0
LT FREEZING RAIN          0     HAIL                       0
HEAVY SNOW                0     SNOW                       0
LIGHT SNOW                0     SLEET                      0
FOG                       0     FOG W/VIS <= 1/4 MILE      0
HAZE                     11

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

$$