Climatological Report (Monthly)
Issued by NWS Medford, OR

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CXUS56 KMFR 011146
CLMMFR

CLIMATE REPORT
NATIONAL WEATHER SERVICE MEDFORD, OR
444 AM PDT SUN OCT 1 2017

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

...THE MEDFORD OR CLIMATE SUMMARY FOR THE MONTH OF SEPTEMBER 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             110   09/02/1988
 LOW               29   09/30/1950
                        09/26/1934
                        09/26/1926
HIGHEST           105   09/01                         98  09/26
                                                          09/10
LOWEST             39   09/22                         44  09/23
AVG. MAXIMUM     81.5              83.5    -2.0     83.5
AVG. MINIMUM     53.5              50.0     3.5     50.7
MEAN             67.5              66.8     0.7     67.1
DAYS MAX >= 90      8               8.8    -0.8        7
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         4.22   1977
TOTALS           0.30              0.57   -0.27     0.01
DAILY AVG.       0.01              0.02   -0.01     0.00
DAYS >= .01         5               3.4     1.6        1
DAYS >= .10         2               1.6     0.4        0
DAYS >= .50         0               0.2    -0.2        0
DAYS >= 1.00        0               0.1    -0.1        0
GREATEST
 24 HR. TOTAL    0.13   09/20 TO 09/20

SNOWFALL (INCHES)
RECORDS
 TOTAL            0.0   2010
TOTALS            0.0               0.0     0.0      0.0
SINCE 7/1         0.0               0.0     0.0      0.0

DEGREE_DAYS
HEATING TOTAL      73                59      14       39
 SINCE 7/1         73                69       4       41
COOLING TOTAL     156               112      44      109
 SINCE 1/1       1281               819     462     1054

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

WIND (MPH)
AVERAGE WIND SPEED              3.1
HIGHEST WIND SPEED/DIRECTION    23/240    DATE  09/20
HIGHEST GUST SPEED/DIRECTION    31/230    DATE  09/07

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.40
NUMBER OF DAYS FAIR           15
NUMBER OF DAYS PC              7
NUMBER OF DAYS CLOUDY          8

AVERAGE RH (PERCENT)     56

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              0     MIXED PRECIP               0
HEAVY RAIN                0     RAIN                       2
LIGHT RAIN                8     FREEZING RAIN              0
LT FREEZING RAIN          0     HAIL                       0
HEAVY SNOW                0     SNOW                       0
LIGHT SNOW                0     SLEET                      0
FOG                      10     FOG W/VIS <= 1/4 MILE      1
HAZE                     17

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

&&

THE HOT, DRY AND VERY SMOKY CONDITIONS FROM THE END OF AUGUST
CONTINUED INTO THE FIRST WEEK OF SEPTEMBER 2017. LOW VISIBILITIES
AND VERY UNHEALTHY AIR QUALITY DUE TO THICK SMOKE FROM AREA
WILDFIRES CONTINUED TO AFFECT THE ROGUE VALLEY DURING THIS FIRST
WEEK. AFTERWARDS, MOISTURE AND ENERGY ASSOCIATED WITH THE REMNANTS
OF HURRICANE LIDIA DRIFTED INTO THE FORECAST AREA BRINGING ANOTHER
ROUND OF THUNDERSTORMS. FORTUNATELY, GIVEN THE TROPICAL NATURE OF
THE MOISTURE, THESE THUNDERSTORMS ALSO PRODUCED WETTING RAINS.
MEDFORD SAW ITS SHARE OF MOISTURE FROM THESE THUNDERSTORMS AS ONE
MOVED THROUGH DURING THE LATE MORNING ON THE 7TH. MANY OF THE
WILDFIRES RECEIVED BENEFICIAL RAINFALL FROM THE THUNDERSTORMS AND
THESE RAINS HELPED TO DAMPEN FIRE ACTIVITY AND IMPROVED AIR QUALITY.
SMOKE AND LOW VISIBILITIES BRIEFLY RETURNED THE STORMS MOVED THROUGH.

BY THE MIDDLE OF THE MONTH, THE FIRST FALL-LIKE SYSTEM OF THE SEASON
BROUGHT MUCH WELCOMED RELIEF FROM WARM TEMPERATURES AND DRY
CONDITIONS. MEDFORD SAW A LITTLE MORE THAN HALF OF THE MONTH`S TOTAL
PRECIPITATION DURING THIS SYSTEM. TEMPERATURES WERE AS LOW AS 10 TO
15 DEGREES BELOW NORMAL AND LOW MAXIMUM TEMPERATURE RECORDS WERE
CHALLENGED. CRATER LAKE AND SIMILAR ELEVATIONS RECEIVED THE FIRST
SNOWFALL OF THE SEASON DURING THIS SYSTEM.

ONCE THIS SYSTEM FINALLY PUSHED EAST OF THE AREA, TEMPERATURES
WARMED AS HIGH PRESSURE RESUMED CONTROL. DURING THE LAST FEW DAYS OF
THE MONTH, ANOTHER LOW PRESSURE SYSTEM MOVED OVER THE AREA. THIS
SYSTEM WAS MUCH DRIER THAN THE MID-MONTH SYSTEM AND MEDFORD ONLY
RECORDED A TRACE OF PRECIPITATION, WHILE LOCATIONS NORTH AND ALONG
THE COAST MEASURED UP TO A QUARTER OF AN INCH.

$$


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