Climatological Report (Monthly)
Issued by NWS Spokane, WA

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CXUS46 KOTX 011257
CLMLWS


CLIMATE REPORT
NATIONAL WEATHER SERVICE SPOKANE, WA
557 AM PDT SAT OCT 1 2016

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

...THE LEWISTON ID AIRPORT CLIMATE SUMMARY FOR THE MONTH OF SEPTEMBER 2016...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1881 TO 2016

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            91   09/26        MM      MM       95  09/12
LOWEST             42   09/13        MM      MM       40  09/28
AVG. MAXIMUM     76.6              78.2    -1.6     77.2
AVG. MINIMUM     52.0              51.0     1.0     50.6
MEAN             64.3              64.6    -0.3     63.9
DAYS MAX >= 90      1               3.9    -2.9        3
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   2012
                        1999
TOTALS           0.55              0.67   -0.12     0.65
DAILY AVG.       0.02              0.02    0.00     0.02
DAYS >= .01         6               4.9     1.1        4
DAYS >= .10         2               2.3    -0.3        2
DAYS >= .50         0               0.2    -0.2        1
DAYS >= 1.00        0               0.0     0.0        0
GREATEST
 24 HR. TOTAL    0.37   09/05 TO 09/06           09/05 TO 09/05
                        09/06 TO 09/06                    09/30 TO 09/30
                        09/06 TO 09/07                    09/30 TO 09/30

SNOWFALL (INCHES)
RECORDS
 TOTAL              T   1926
TOTALS            0.0               0.0     0.0      0.0
SINCE 7/1         0.0               0.0     0.0      0.0
SNOWDEPTH AVG.      0                MM      MM        0
DAYS >= 1.0         0               0.0     0.0        0
GREATEST
 SNOW DEPTH         0   MM                             0  MM
 24 HR TOTAL      0.0   09/30 TO 09/30           09/30 TO 09/30
                                                          09/30 TO 09/30
                                                          09/30 TO 09/30

DEGREE_DAYS
HEATING TOTAL      61                99     -38       84
 SINCE 7/1         72               114     -42       84
COOLING TOTAL      47                87     -40       57
 SINCE 1/1        863               804      59     1206
.................................................

WIND (MPH)
AVERAGE WIND SPEED              4.6
HIGHEST WIND SPEED/DIRECTION    23/300    DATE  09/11
HIGHEST GUST SPEED/DIRECTION    30/300    DATE  09/11

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.20
NUMBER OF DAYS FAIR           22
NUMBER OF DAYS PC              4
NUMBER OF DAYS CLOUDY          4

AVERAGE RH (PERCENT)     48

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                      1

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

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