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000
CXUS55 KBOI 011744 CCA
CLMBOI


CLIMATE REPORT...CORRECTED
NATIONAL WEATHER SERVICE BOISE ID
1016 AM MDT SAT JUN 1 2013

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

...THE BOISE IDAHO CLIMATE SUMMARY FOR THE MONTH OF MAY 2013...

THE FIRST COUPLE DAYS OF MAY WERE COLDER THAN NORMAL WHILE FROM
MAY 3RD TO 16TH TEMPERATURES AVERAGED ABOVE NORMAL. THE SUB-
FREEZING LOW MAY 1ST OF 30 WAS THE COLDEST LOW OF THE MONTH. THE
SUMMER-LIKE HIGH OF 95 ON MAY 13TH SET A NEW RECORD FOR THE DATE
AND WAS THE WARMEST HIGH. MAY TEMPERATURES HAVE BEEN AS LOW AS 22
AND AS HOT AS 100. A COOL PERIOD THAT STARTED MAY 22 CONTINUED
THROUGH THE END OF THE MONTH.

ON MAY 6 THE CORE OF A STRONG THUNDERSTORM CROSSED 5 MILES EAST OF
BOISE IN THE LATE AFTERNOON WHICH PRODUCED A PEAK WIND OF 43 MPH
FROM THE EAST.

ON MAY 8 A STRONG THUNDERSTORM CROSSED NORTH OF BOISE IN THE EARLY
EVENING WHICH PRODUCED THE FASTEST PEAK WIND OF THE MONTH...48
MPH FROM THE EAST.

A COLD FRONT PASSAGE THE EVENING OF MAY 13TH WITH STRONG WINDS
BRIEFLY CAUSED BLOWING DUST AND SOMEWHAT REDUCED VISIBILITY.

A FREEZE WARNING WAS ISSUED FOR THE SURROUNDING AREA FOR THE
MORNING OF MAY 23 WHEN A LOW OF 33 DEGREES OCCURRED AT THE
AIRPORT. MAY 23RD ALSO SAW THE DRIEST AIR EVER OVER BOISE...AS
MEASURED BY THE PRECIPITABLE WATER OF 0.05 INCHES FROM THE
RADIOSONDE SOUNDING.

A WET PERIOD OCCURRED MAY 26 THROUGH 30 WITH ALMOST A THIRD OF AN
INCH OF RAIN IN SHOWERS AND THUNDERSTORMS IN 24 HOURS ENDING ON
MAY 28. MODERATE RAIN WITH SHOWERS AND THUNDERSTORMS BROUGHT
POOR VISIBILITY TO THE BOISE AREA THE EVENING OF MAY 26TH.

MAY TEMPERATURE OF 61 DEGREES AVERAGED OUT ALMOST 2 DEGREES ABOVE
NORMAL WHILE PRECIPITATION OF 0.77 INCHES WAS A BIT OVER HALF OF
NORMAL FOR MAY. TEMPERATURES THROUGHOUT SOUTHWEST IDAHO WERE
MILDER THAN NORMAL WHILE PRECIPITATION WAS BELOW NORMAL.

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1878 TO 2013

WEATHER         OBSERVED          NORMAL  DEPART  LAST YEAR`S
                 VALUE   DATE(S)  VALUE   FROM    VALUE
                                          NORMAL
.............................................................
TEMPERATURE (F)
HIGHEST            95   05/13
LOWEST             30   05/01
AVG. MAXIMUM     74.2              71.6     2.6
AVG. MINIMUM     47.8              46.5     1.3
MEAN             61.0              59.1     1.9
DAYS MAX >= 90      3
DAYS MAX <= 32      0
DAYS MIN <= 32      1
DAYS MIN <= 0       0

PRECIPITATION (INCHES)
RECORD
 MAXIMUM         4.90   1890
TOTALS           0.77              1.39   -0.62
DAYS >= .01         7
DAYS >= .10         3
DAYS >= .50         0
DAYS >= 1.00        0
GREATEST
 24 HR. TOTAL    0.31   05/27 TO 05/28

DEGREE_DAYS
HEATING TOTAL     162               226     -64      217
 SINCE 7/1       5314              5450    -136
COOLING TOTAL      47                41       6       33
 SINCE 1/1         47                44       3
..............................................................

WIND (MPH)
AVERAGE WIND SPEED              8.5
RESULTANT WIND SPEED/DIRECTION   3/309
HIGHEST WIND SPEED/DIRECTION    38/090    DATE  05/08
HIGHEST GUST SPEED/DIRECTION    48/080    DATE  05/08

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM

AVERAGE RH (PERCENT)     42


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

$$