NOUS45 KBOI DDHHMM
PNSBOI

PUBLIC INFORMATION STATEMENT
NATIONAL WEATHER SERVICE BOISE IDAHO
625 PM MDT SUN AUG 31 2003

...THE HOT SUMMER OF 2003...

WITH AUGUST DRAWING TO A CLOSE IT IS INTERESTING TO COMPARE SUMMER
2003 TO PREVIOUS SUMMERS. IN TERMS OF AVERAGE TEMPERATURE THIS WAS
THE HOTTEST JUNE THROUGH AUGUST PERIOD EVER ON THE AIRPORT RECORDS
GOING BACK TO 1940. THIS YEARS AVERAGE TEMPERATURE FOR THE THREE
SUMMER MONTHS WAS 75.9. THAT BEATS 1961... THE PREVIOUS RECORD
HOLDER... BY TWO TENTHS OF A DEGREE. 

CONSIDERING RECORDS FROM ALL BOISE LOCATIONS GOING ALL THE WAY BACK
TO 1864 THIS YEAR RANKED NUMBER 3 BEHIND 1869 AND 1865 WITH SUMMER
AVERAGES OF 76.6 AND 76.8 RESPECTIVELY. 

SUMMER 2003 PROVIDED 20 DAYS WITH MAIMUM TEMPERATURES OF 100 OR
HOTTER. THAT INCLUDES A STRING OF 9 CONSECUTIVE 100 DEGREE DAYS FROM
JULY 15 THROUGH JULY 23...EXCEEDING THE PREVIOUS RECORD OF 7
CONSECUTIVE DAYS IN 1931 AND AGAIN IN 1960.

THE HOTTEST DAY OF 2003 WAS JULY 22 WITH 108. THE HOTTEST
TEMPERATURE EVER RECORDED AT BOISE WAS 111 ON JULY 19 1960.

THE NORMAL OR AVERAGE TEMPERATURE AT BOISE FOR JUNE THROUGH AUGUST
IS 71.9 DEGREEES. ON AVERAGE BOISE RECORDS 5 DEAYS OF 100 DEGREES OR
HOTTER EACH SUMMER.

WHILE MORE 100 DEGREE TEMPERATURES ARE NOT CURRENTLY IN THE FORECAST
SEPTEMBER CAN PRODUCE TRIPLE DIGIT READINGS. AT BOISE THIS HAPPENS
ON THE AVERAGE ONE YEAR IN TEN. THE FIRST FIVE DAYS OF SEPTEMBER 
HAVE EACH SEEN HIGHS OF 100 DEGREES OR MORE. THE LATEST OCCURRENCE
EVER WAS 101 DEGREES ON SEPTEMBER 14 2000. 

$$

JT


9/3/2003

the hot summer of 2003