Climatological Report (Monthly)
Issued by NWS Spokane, WA

Home | Current Version | Previous Version | Text Only | Print | Product List | Glossary On
Versions: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25
000
CXUS46 KOTX 012113
CLMLWS

CLIMATE REPORT
NATIONAL WEATHER SERVICE SPOKANE, WA
213 PM PDT THU JUN 1 2017

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

...THE LEWISTON ID AIRPORT CLIMATE SUMMARY FOR THE MONTH OF MAY 2017...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1881 TO 2017

WEATHER         OBSERVED          NORMAL  DEPART  LAST YEAR`S
                 VALUE   DATE(S)  VALUE   FROM    VALUE  DATE(S)
                                          NORMAL
................................................................
TEMPERATURE (F)
RECORD
 HIGH             104   05/28/1934
 LOW               23   05/01/1954
HIGHEST            96   05/30        MM      MM       86  05/13
                                                          05/03
LOWEST             36   05/13        MM      MM       40  05/10
AVG. MAXIMUM     72.1              70.9     1.2     73.9
AVG. MINIMUM     47.1              47.0     0.1     50.0
MEAN             59.6              59.0     0.6     61.9
DAYS MAX >= 90      2               1.2     0.8        0
DAYS MAX <= 32      0               0.0     0.0        0
DAYS MIN <= 32      0               0.0     0.0        0
DAYS MIN <= 0       0               0.0     0.0        0

PRECIPITATION (INCHES)
RECORD
 MAXIMUM         3.78   1978
 MINIMUM            T   2003
                        1924
TOTALS           1.49              1.61   -0.12     1.53
DAILY AVG.       0.05              0.05    0.00     0.05
DAYS >= .01        10              10.6    -0.6        8
DAYS >= .10         5               5.3    -0.3        6
DAYS >= .50         1               0.5     0.5        0
DAYS >= 1.00        0               0.1    -0.1        0
GREATEST
 24 HR. TOTAL    0.61   05/05 TO 05/05           05/21 TO 05/22

SNOWFALL (INCHES)
RECORDS
 TOTAL            0.3   1916
TOTALS            0.0               0.0     0.0      0.0
SINCE 7/1        39.2              10.5    28.7      6.4
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   MM                                MM

DEGREE_DAYS
HEATING TOTAL     210               217      -7      122
 SINCE 7/1       5243              5097     146     4166
COOLING TOTAL      51                30      21       33
 SINCE 1/1         51                32      19       40
..................................................

WIND (MPH)
AVERAGE WIND SPEED              5.0
HIGHEST WIND SPEED/DIRECTION    30/300    DATE  05/16
HIGHEST GUST SPEED/DIRECTION    40/300    DATE  05/11

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.30
NUMBER OF DAYS FAIR           19
NUMBER OF DAYS PC              9
NUMBER OF DAYS CLOUDY          3

AVERAGE RH (PERCENT)     60

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              0     MIXED PRECIP               0
HEAVY RAIN                1     RAIN                       2
LIGHT RAIN               12     FREEZING RAIN              0
LT FREEZING RAIN          0     HAIL                       0
HEAVY SNOW                0     SNOW                       0
LIGHT SNOW                0     SLEET                      0
FOG                       6     FOG W/VIS <= 1/4 MILE      1
HAZE                      0

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

$$
MAY WAS VERY TYPICAL ACROSS THE INLAND NORTHWEST WITH THE MONTH
FINISHING WITH NEAR NORMAL TEMPERATURES AND PRECIPITATION ACROSS
SOUTHEAST WASHINGTON AND THE SOUTH IDAHO PANHANDLE. SPRING WEATHER
TYPICAL MEANS LOTS OF WEATHER CHANGES AND THIS MONTH WAS NO
EXCEPTION.  THE MONTH STARTED OFF COOL WITH LEWISTON ONLY REACHING
58 DEGREES ON THE 1ST.  A FAST WARM FOLLOWED WITH 88 ON THE
4TH...AND THEN A QUICK COOL DOWN WITH ONLY 52 ON THE 6TH. THIS BIG
OF AN AIR MASS CHANGE RESULTED IN THUNDERSTORMS WITH GUSTY WINDS AND
HEAVY RAIN ON THE 5TH.  A SEVERE STORM IN THE BLUE MOUNTAINS
PRODUCED A WIND GUST TO 66 MPH AT ALDER RIDGE.  LAPWAI REPORTED DIME
SIZE HAIL. ANOTHER WARMUP FOLLOWED WITH LEWISTON REACHING 80 ON THE
10TH FOLLOWED BY ANOTHER COOL DOWN WITH ONLY 50 ON THE 12TH. THIS
COOL AND SHOWERY PATTERN PERSISTED THROUGH THE 17TH. ANOTHER WARMUP
FOLLOWED WITH HIGHS WARMING TO 89 IN LEWISTON ON THE 23RD BEFORE A
STRONG DRY COLD FRONT BROUGHT WINDY CONDITIONS ON THE 24TH WITH
HIGHS BACK DOWN INTO THE 60S. STRONG HIGH PRESSURE BUILD IN TO
FINISH OUT THE MONTH WITH ANOTHER QUICK WARM UP WITH LEWISTON
REACHING 96 DEGREES ON THE 30TH.

LEWISTON SET A NEW DAILY RAINFALL RECORD ON THE 5TH WITH 0.61
INCHES.



USA.gov is the U.S. government's official web portal to all federal, state and local government web resources and services.