Climatological Report (Monthly)
Issued by NWS Spokane, WA

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CXUS46 KOTX 060301
CLMLWS

CLIMATE REPORT
NATIONAL WEATHER SERVICE SPOKANE, WA
800 PM PDT THU MAY 5 2016

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

...THE LEWISTON ID AIRPORT CLIMATE SUMMARY FOR THE MONTH OF APRIL 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              99   04/24/1946
 LOW               20   04/19/1966
HIGHEST            86   04/20        MM      MM       86  04/28
LOWEST             37   04/16        MM      MM       32  04/05
                        04/05
AVG. MAXIMUM     69.7              62.3     7.4     64.2
AVG. MINIMUM     45.2              40.3     4.9     38.1
MEAN             57.4              51.3     6.1     51.2
DAYS MAX >= 90      0               0.0     0.0        0
DAYS MAX <= 32      0               0.0     0.0        0
DAYS MIN <= 32      0               2.2    -2.2        1
DAYS MIN <= 0       0               0.0     0.0        0

PRECIPITATION (INCHES)
RECORD
 MAXIMUM         3.29   1978
 MINIMUM         0.05   1956
TOTALS           1.60              1.32    0.28     0.29
DAILY AVG.       0.05              0.04    0.01     0.01
DAYS >= .01         9              10.2    -1.2        7
DAYS >= .10         6               4.0     2.0        1
DAYS >= .50         1               0.4     0.6        0
DAYS >= 1.00        0               0.0     0.0        0
GREATEST
 24 HR. TOTAL    0.64   04/29 TO 04/30           04/05 TO 04/06

SNOWFALL (INCHES)
RECORDS
 TOTAL            1.1   1972
TOTALS            0.0               0.0     0.0      0.0
SINCE 7/1         6.4              10.5    -4.1      1.5
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   04/30 TO 04/30           04/29 TO 04/29

DEGREE_DAYS
HEATING TOTAL     226               413    -187      408
 SINCE 7/1       4044              4880    -836     4119
COOLING TOTAL       7                 2       5        1
 SINCE 1/1          7                 2       5        1
..........................................................

WIND (MPH)
AVERAGE WIND SPEED              4.7
HIGHEST WIND SPEED/DIRECTION    31/250    DATE  04/04
HIGHEST GUST SPEED/DIRECTION    38/290    DATE  04/04

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.30
NUMBER OF DAYS FAIR           17
NUMBER OF DAYS PC             10
NUMBER OF DAYS CLOUDY          3

AVERAGE RH (PERCENT)     58

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              1     MIXED PRECIP               0
HEAVY RAIN                1     RAIN                       4
LIGHT RAIN                9     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      0
HAZE                      0

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

$$

APRIL 2016 BROUGHT TEMPERATURES WELL ABOVE NORMAL ACROSS SOUTHEASTERN
WASHINGTON AND THE SOUTH IDAHO PANHANDLE.  FOR LEWISTON THE MONTH
FINISHED THE 3RD WARMEST ON RECORD.  THE WARM TEMPERATURES WERE CAUSED BY
A COUPLE PROLONGED SPELLS OF WARM TEMPERATURES COURTESY OF
PROLONGED HIGH PRESSURE OVER THE REGION.  HIGH TEMPERATURES IN
LEWISTON WARMED INTO THE MID 70S TO LOWER 80S FROM THE 7TH THROUGH
THE 11TH...AND IN THE UPPER 70S TO MID 80S FROM THE 17TH THROUGH THE
22ND.  IN BETWEEN THESE WARM SPELLS TEMPERATURES BRIEFLY DROPPED
WITH HIGHS ONLY IN THE 50S WITH A COUPLE OF RAINY DAYS.  THIS WET
WEATHER RESULTED IN NEAR NORMAL PRECIPITATION FOR THE MONTH.
ISOLATED THUNDERSTORMS ALSO DEVELOPED ON THE 14TH AND 22ND AROUND
THE PALOUSE...BLUE MOUNTAINS...AND CAMAS PRAIRIE.

A COUPLE RECORDS WERE TIED OR BROKE DURING THE MONTH AT THE LEWISTON
AIRPORT.  ON THE 8TH A HIGH TEMPERATURE OF 81 DEGREES TIED A RECORD FOR
THE DATE. ON THE 29TH 0.63 INCHES OF RAIN BROKE A RECORD FOR THE DATE.


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