650
CDUS46 KBOI 180931
CLIONO
CLIMATE REPORT
NATIONAL WEATHER SERVICE BOISE ID
331 AM MDT MON MAY 18 2026
...............................
..THE ONTARIO OR CLIMATE SUMMARY FOR MAY 17 2026
CLIMATE NORMAL PERIOD 1991 TO 2020
CLIMATE RECORD PERIOD 1945 TO 2026
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST
VALUE (LST) VALUE VALUE FROM YEAR
NORMAL
...............................................................
TEMPERATURE (F)
YESTERDAY
MAXIMUM 63 326 PM 98 1973 77 -14 61
MINIMUM 40 434 AM 29 1974 48 -8 46
AVERAGE 52 63 -11 54
PRECIPITATION (IN)
YESTERDAY 0.00 0.59 2018 0.04 -0.04 T
MONTH TO DATE T 0.60 -0.60 0.02
SINCE OCT 1 8.31 7.52 0.79 10.94
SINCE JAN 1 4.77 4.61 0.16 5.77
DEGREE DAYS
HEATING
YESTERDAY 13 4 9 11
MONTH TO DATE 49 101 -52 90
SINCE MAR 1 1020 1056 -36 1000
SINCE JUL 1 4657 5123 -466 4929
COOLING
YESTERDAY 0 2 -2 0
MONTH TO DATE 25 17 8 10
SINCE MAR 1 25 19 6 10
SINCE JAN 1 25 19 6 10
...............................................................
WIND (MPH)
HIGHEST WIND SPEED 32 HIGHEST WIND DIRECTION NW (320)
HIGHEST GUST SPEED 44 HIGHEST GUST DIRECTION NW (310)
AVERAGE WIND SPEED 16.8
SKY COVER
AVERAGE SKY COVER 0.3
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
HAZE
RELATIVE HUMIDITY (PERCENT)
HIGHEST 67 500 AM
LOWEST 25 100 PM
AVERAGE 46
......................................................
THE ONTARIO OR CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 77 96 1973
2008
MINIMUM TEMPERATURE (F) 49 27 1989
SUNRISE AND SUNSET
MAY 18 2026...........SUNRISE 619 AM MDT SUNSET 911 PM MDT
MAY 19 2026...........SUNRISE 618 AM MDT SUNSET 912 PM MDT
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
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