


Climatological Report (Daily)
Issued by NWS
Issued by NWS
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391 CDUS46 KBOI 180931 CLIONO CLIMATE REPORT NATIONAL WEATHER SERVICE BOISE ID 331 AM MDT MON AUG 18 2025 ................................... ...THE ONTARIO OR CLIMATE SUMMARY FOR AUGUST 17 2025... CLIMATE NORMAL PERIOD 1991 TO 2020 CLIMATE RECORD PERIOD 1948 TO 2025 WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST VALUE (LST) VALUE VALUE FROM YEAR NORMAL ................................................................... TEMPERATURE (F) YESTERDAY MAXIMUM 87 515 PM 108 1967 93 -6 98 MINIMUM 62 435 AM 41 1976 59 3 54 1978 AVERAGE 75 76 -1 76 PRECIPITATION (IN) YESTERDAY 0.00 0.37 1990 0.01 -0.01 0.00 MONTH TO DATE T 0.08 -0.08 0.02 SINCE OCT 1 11.84 9.15 2.69 9.49 SINCE JAN 1 6.67 6.24 0.43 7.38 DEGREE DAYS HEATING YESTERDAY 0 0 0 0 MONTH TO DATE 0 0 0 0 SINCE JUN 1 27 34 -7 20 SINCE JUL 1 0 2 -2 0 COOLING YESTERDAY 10 11 -1 11 MONTH TO DATE 202 226 -24 268 SINCE JUN 1 849 816 33 1063 SINCE JAN 1 906 875 31 1099 ................................................................... WIND (MPH) HIGHEST WIND SPEED 21 HIGHEST WIND DIRECTION NW (310) HIGHEST GUST SPEED 28 HIGHEST GUST DIRECTION NW (310) AVERAGE WIND SPEED 4.3 SKY COVER AVERAGE SKY COVER 0.1 WEATHER CONDITIONS THE FOLLOWING WEATHER WAS RECORDED YESTERDAY. NO SIGNIFICANT WEATHER WAS OBSERVED. RELATIVE HUMIDITY (PERCENT) HIGHEST 73 500 AM LOWEST 29 600 PM AVERAGE 51 .......................................................... THE ONTARIO OR CLIMATE NORMALS FOR TODAY NORMAL RECORD YEAR MAXIMUM TEMPERATURE (F) 93 105 1967 MINIMUM TEMPERATURE (F) 59 38 1978 1995 SUNRISE AND SUNSET AUGUST 18 2025........SUNRISE 656 AM MDT SUNSET 847 PM MDT AUGUST 19 2025........SUNRISE 657 AM MDT SUNSET 845 PM MDT - INDICATES NEGATIVE NUMBERS. R INDICATES RECORD WAS SET OR TIED. MM INDICATES DATA IS MISSING. T INDICATES TRACE AMOUNT. $$