Climatological Report (Monthly)
Issued by NWS Medford, OR

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000
CXUS56 KMFR 011324
CLMMFR

CLIMATE REPORT
NATIONAL WEATHER SERVICE MEDFORD, OR
625 AM PDT THU JUN 1 2017

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

...THE MEDFORD OR CLIMATE SUMMARY FOR THE MONTH OF MAY 2017...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1911 TO 2017

WEATHER         OBSERVED          NORMAL  DEPART  LAST YEAR`S
                 VALUE   DATE(S)  VALUE   FROM    VALUE  DATE(S)
                                          NORMAL
................................................................
TEMPERATURE (F)
RECORD
 HIGH             103   05/30/1986
 LOW               28   05/04/1996
                        05/06/1968
                        05/01/1954
HIGHEST            97   05/22                         94  05/31
LOWEST             35   05/07                         40  05/01
AVG. MAXIMUM     78.4              73.3     5.1     77.3
AVG. MINIMUM     48.3              46.2     2.1     49.2
MEAN             63.3              59.8     3.5     63.2
DAYS MAX >= 90      8               2.5     5.5        1
DAYS MAX <= 32      0               0.0     0.0        0
DAYS MIN <= 32      0               0.2    -0.2        0
DAYS MIN <= 0       0               0.0     0.0        0

PRECIPITATION (INCHES)
RECORD
 MAXIMUM         4.58   1945
TOTALS           0.58              1.31   -0.73     0.33
DAILY AVG.       0.02              0.04   -0.02     0.01
DAYS >= .01         6               8.4    -2.4        5
DAYS >= .10         2               4.2    -2.2        2
DAYS >= .50         0               0.5    -0.5        0
DAYS >= 1.00        0               0.0     0.0        0
GREATEST
 24 HR. TOTAL    0.37   05/16 TO 05/16

SNOWFALL (INCHES)
RECORDS
 TOTAL            0.1   1988
TOTALS            0.0                 T     0.0      0.0
SINCE 7/1        11.8               4.1     7.7      1.9

DEGREE_DAYS
HEATING TOTAL     130               198     -68       91
 SINCE 7/1       4018              4197    -179     3420
COOLING TOTAL      87                35      52       44
 SINCE 1/1         87                38      49       61

FREEZE DATES
RECORD
 EARLIEST     09/13/1921
 LATEST       06/12/1952
EARLIEST                        10/18
LATEST                          04/29
.................................................................

WIND (MPH)
AVERAGE WIND SPEED              4.8
HIGHEST WIND SPEED/DIRECTION    26/320    DATE  05/29
HIGHEST GUST SPEED/DIRECTION    37/300    DATE  05/11

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.30
NUMBER OF DAYS FAIR           20
NUMBER OF DAYS PC              7
NUMBER OF DAYS CLOUDY          4

AVERAGE RH (PERCENT)     55

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              0     MIXED PRECIP               0
HEAVY RAIN                0     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                       3     FOG W/VIS <= 1/4 MILE      0
HAZE                      6

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

&& THIS MAY FEATURED A MIXED BAG OF WEATHER, WITH SEVERAL DAYS
FEATURING HIGHS IN THE 90S, AND MANY DAYS WITH HIGHS IN THE 60S.
THOUGH PARTS OF THE CWA FINISHED MAY WITH ABOVE NORMAL PRECIPITATION
FOR THE MONTH, MEDFORD WAS BELOW NORMAL, CONTINUING THE SLIGHT
DRYING TREND THAT BEGAN IN APRIL. THE MONTH BEGAN WITH MILD
TEMPERATURES AND LIGHT PRECIPITATION UNDER A WARM FRONT.
TEMPERATURES ROSE SHARPLY UNDER HIGH PRESSURE MAY 3RD...HITTING 90
DEGREES. ON MAY 4TH, A TROUGH PROGRESSING INLAND HELPED TRIGGER
WIDESPREAD THUNDERSTORMS, WITH MULTIPLE SEVERE THUNDERSTORM WARNINGS
ISSUED, AND TWO TORNADO WARNINGS ISSUED... THE SECOND AND THIRD EVER
FOR THIS OFFICE! THE TORNADO WARNINGS WERE ISSUED FOR NORTHEASTERN
JACKSON AND WESTERN KLAMATH COUNTIES, IN THE PROSPECT/CRATER LAKE
AREA, BASED ON RADAR RETURNS. THE OFFICE WAS UNABLE TO GET SPOTTER
REPORTS TO VERIFY THESE WARNINGS, DUE TO REMOTENESS OF THE AREAS
AFFECTED, THOUGH THERE WERE A FEW REPORTS OF FUNNEL CLOUDS. TWO
EMPLOYEES DID AN AERIAL DAMAGE SURVEY COURTESY OF THE JACKSON COUNTY
SHERIFF`S DEPARTMENT BUT WERE UNABLE TO LOCATE ANY NEWLY DOWNED
TREES. AFTER A VERY EXCITING FIRST WEEK OF MAY, THE AREA RETURNED TO
A COOL, SHOWERY PATTERN FOR ROUGHLY TWO WEEKS. THE FOURTH WEEK OF
THE MONTH, A STRONG HIGH PRESSURE SYSTEM DEVELOPED, BRINGING HIGHS
TO THE 90S FOR SEVERAL DAYS.

THE AVERAGE TEMPERATURE FOR THE MONTH WAS 63.3 DEGREES, WHICH IS 3.5
DEGREES ABOVE NORMAL. THE AVERAGE MAXIMUM TEMPERATURE WAS 78.4
DEGREES, WHICH IS 5.1 DEGREES ABOVE NORMAL. THE AVERAGE MINIMUM
TEMPERATURE WAS 48.3 DEGREES WHICH IS 2.1 DEGREES ABOVE NORMAL. THE
HIGHEST TEMPERATURE FOR THE MONTH WAS 97 DEGREES ON THE 22ND. THE
LOWEST TEMPERATURE FOR THE MONTH WAS 35 DEGREES WHICH OCCURRED ON
THE 7TH.

THERE WERE 20 CLEAR DAYS, 7 PARTLY CLOUDY DAYS, AND 4 CLOUDY DAYS.

TOTAL PRECIPITATION FOR THE MONTH WAS 0.58 INCHES, WHICH IS 0.73
INCHES BELOW NORMAL. THE TOTAL PRECIPITATION FOR THE WATER YEAR
(BEGINNING OCTOBER 1ST) STANDS AT 24.27 INCHES WHICH IS 7.79 INCHES
ABOVE NORMAL.
CALENDAR YEAR PRECIPITATION IS NOW 12.58 INCHES WHICH IS 3.74 INCHES
ABOVE NORMAL.

THE AVERAGE WIND SPEED FOR THE MONTH WAS 4.8 MPH. THE FASTEST
RECORDED TWO-MINUTE WIND WAS 26 MPH FROM THE NORTHWEST ON THE 29TH
THE PEAK WIND WAS 37 MPH FROM THE WEST WHICH OCCURRED ON THE 11TH.

THE HIGHEST PRESSURE FOR THE MONTH WAS 30.29 INCHES ON THE 1ST. THE
LOWEST PRESSURE FOR THE MONTH WAS 29.66 INCHES ON THE 25TH.

RECORDS SET IN MAY 2017:

MEDFORD SET A RECORD HIGH OF 96 ON MAY 23, BREAKING THE RECORD OF
95. -MSC

$$


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