Climatological Report (Monthly)
Issued by NWS Boise, ID

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CXUS55 KBOI 011850
CLMBOI

CLIMATE REPORT...CORRECTED
NATIONAL WEATHER SERVICE BOISE ID
1130 AM MDT SAT AUG 1 2015

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

...THE BOISE ID CLIMATE SUMMARY FOR THE MONTH OF JULY 2015...

JULY TEMPERATURES AVERAGED CLOSE TO NORMAL AFTER A VERY HOT START.
WITH AN AVERAGE TEMPERATURE OF 76.6 JULY WAS ALMOST COOLER THAN JUNE
WHICH AVERAGED 75.9.

HIGH TEMPERATURES WERE 100 OR WARMER THE FIRST FOUR DAYS OF JULY EXTENDING
THE CONSECUTIVE DAY STREAK OF 100+ DAYS TO NINE CONTINUING FROM LATE JUNE.
THE NINE CONSECUTIVE DAYS TIED A RECORD.

THE HOT WEATHER WAS DUE TO A STRONG AND PERSISTENT RIDGE OF HIGH PRESSURE
ALOFT OVER THE WESTERN U.S. THAT FINALLY BROKE DOWN AROUND JULY 5.  A
TROUGH GRADUALLY REPLACED THE RIDGE AND TEMPERATURES DIPPED BELOW NORMAL
JULY 12 THROUGH 18.  AN EVER COOLER AIR MASS CAME IN WITH AN UPPER
LEVEL LOW PRESSURE SYSTEM JULY 26-27.  THE LOW TEMPERATURE OF 51 ON
THE 28TH WAS THE COOLEST JULY LOW SINCE 2010...AND THE HIGH OF 75
THAT DAY WAS 18 DEGREES COOLER THAN NORMAL.  HIGH PRESSURE ALOFT
QUICKLY REPLACED THE DEPARTING LOW AND TEMPERATURES NEARED 100 AGAIN
BY MONTH/S END.

THUNDERSTORMS CONTAINING MONSOON MOISTURE DROPPED .62 INCHES OF RAIN
ON BOISE ON JULY 8 RESULTING IN AREAS OF URBAN FLOODING.  THE RAINFALL
WAS HIGHLY VARIABLE WITH SOME NEARBY LOCATIONS REPORTING AS MUCH AS
TWO INCHES OF RAIN.  BOISE HAD MEASURABLE RAIN JULY 8 THROUGH JULY 14
SEVEN CONSECUTIVE DAYS...VERY UNUSUAL FOR A MONTH THAT NORMALLY TOTALS
ONLY .33 INCH.  THAT MUCH RAIN FELL IN ONLY 5 MINUTES ON JULY 8.  THE
TOTAL RAINFALL THIS JULY WAS 0.97 INCH...ALMOST THREE TIMES NORMAL.

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1878 TO 2015

WEATHER         OBSERVED          NORMAL  DEPART  LAST YEAR`S
                 VALUE   DATE(S)  VALUE   FROM    VALUE
                                          NORMAL
.............................................................
TEMPERATURE (F)
HIGHEST           104   07/02
LOWEST             51   07/28
AVG. MAXIMUM     90.1              91.2    -1.1
AVG. MINIMUM     63.0              60.4     2.6
MEAN             76.6              75.8     0.8
DAYS MAX >= 90     14
DAYS MAX <= 32      0
DAYS MIN <= 32      0
DAYS MIN <= 0       0

PRECIPITATION (INCHES)
RECORD
 MAXIMUM         2.01   1913
TOTALS           0.97              0.33    0.64
DAYS >= .01         9
DAYS >= .10         2
DAYS >= .50         1
DAYS >= 1.00        0
GREATEST
 24 HR. TOTAL    0.65   07/08 TO 07/09

DEGREE_DAYS
HEATING TOTAL       0                 8      -8       MM
 SINCE 7/1          0                 8      -8
COOLING TOTAL     369               342      27       MM
 SINCE 1/1        742               525     217
..............................................................

WIND (MPH)
AVERAGE WIND SPEED              6.7
RESULTANT WIND SPEED/DIRECTION   1/297
HIGHEST WIND SPEED/DIRECTION    39/180    DATE  07/12
HIGHEST GUST SPEED/DIRECTION    47/180    DATE  07/12

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM

AVERAGE RH (PERCENT)     40


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

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