Climatological Report (Daily)
Issued by NWS
Issued by NWS
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CDUS46 KBOI 210121
CLIONO
CLIMATE REPORT
NATIONAL WEATHER SERVICE BOISE ID
721 PM MDT SUN SEP 20 2026
...................................
...THE ONTARIO OR CLIMATE SUMMARY FOR SEPTEMBER 20 2026...
VALID TODAY AS OF 0700 PM LOCAL TIME.
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)
TODAY
MAXIMUM 81 518 PM 94 1967 81 0 89
MINIMUM 46 558 AM 27 1978 48 -2 47
AVERAGE 64 64 0 68
PRECIPITATION (IN)
TODAY 0.00 1.00 2008 0.01 -0.01 0.00
MONTH TO DATE 0.41 0.15 0.26 0.03
SINCE OCT 1 10.11 9.34 0.77 12.57
SINCE JAN 1 6.57 6.43 0.14 7.40
DEGREE DAYS
HEATING
TODAY 1 3 -2 0
MONTH TO DATE 63 31 32 4
SINCE SEP 1 63 31 32 4
SINCE JUL 1 65 37 28 4
COOLING
TODAY 0 2 -2 3
MONTH TO DATE 20 85 -65 107
SINCE SEP 1 20 85 -65 107
SINCE JAN 1 1042 1083 -41 1154
...................................................................
WIND (MPH)
HIGHEST WIND SPEED 8 HIGHEST WIND DIRECTION W (260)
HIGHEST GUST SPEED 10 HIGHEST GUST DIRECTION E (90)
AVERAGE WIND SPEED 1.9
RELATIVE HUMIDITY (PERCENT)
HIGHEST 86 600 AM
LOWEST 29 500 PM
AVERAGE 58
..........................................................
THE ONTARIO OR CLIMATE NORMALS FOR TOMORROW
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 81 97 1966
MINIMUM TEMPERATURE (F) 48 25 1983
SUNRISE AND SUNSET
SEPTEMBER 20 2026.....SUNRISE 733 AM MDT SUNSET 749 PM MDT
SEPTEMBER 21 2026.....SUNRISE 734 AM MDT SUNSET 747 PM MDT
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
$$