


Climatological Report (Daily)
Issued by NWS
Issued by NWS
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936 CDUS45 KRIW 210729 CLILND CLIMATE REPORT NATIONAL WEATHER SERVICE RIVERTON WY 129 AM MDT THU AUG 21 2025 ................................... ...THE LANDER WY CLIMATE SUMMARY FOR AUGUST 20 2025... CLIMATE NORMAL PERIOD: 1991 TO 2020 CLIMATE RECORD PERIOD: 1891 TO 2025 WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST VALUE (LST) VALUE VALUE FROM YEAR NORMAL ................................................................... TEMPERATURE (F) YESTERDAY MAXIMUM 99R 3:05 PM 94 2003 85 14 94 2019 2024 MINIMUM 59 5:06 AM 38 1964 53 6 61 AVERAGE 79 69 10 PRECIPITATION (IN) YESTERDAY 0.00 0.62 1915 0.01 -0.01 0.00 MONTH TO DATE 0.05 0.35 -0.30 0.45 SINCE JUN 1 1.03 2.02 -0.99 0.87 SINCE JAN 1 9.59 9.27 0.32 6.73 SNOWFALL (IN) YESTERDAY 0.0 0.0 2020 0.0 0.0 0.0 MONTH TO DATE 0.0 0.0 0.0 0.0 SINCE JUN 1 0.0 0.1 -0.1 0.0 SINCE JUL 1 0.0 0.0 0.0 0.0 SNOW DEPTH 0 DEGREE DAYS HEATING YESTERDAY 0 1 -1 0 MONTH TO DATE 2 6 -4 1 SINCE JUN 1 92 144 -52 42 SINCE JUL 1 4 20 -16 7 COOLING YESTERDAY 14 5 9 13 MONTH TO DATE 154 132 22 148 SINCE JUN 1 478 405 73 513 SINCE JAN 1 486 410 76 513 ................................................................... WIND (MPH) HIGHEST WIND SPEED 21 HIGHEST WIND DIRECTION NW (320) HIGHEST GUST SPEED 29 HIGHEST GUST DIRECTION NW (320) AVERAGE WIND SPEED 5.2 SKY COVER POSSIBLE SUNSHINE MM AVERAGE SKY COVER 0.0 WEATHER CONDITIONS THE FOLLOWING WEATHER WAS RECORDED YESTERDAY. NO SIGNIFICANT WEATHER WAS OBSERVED. RELATIVE HUMIDITY (PERCENT) HIGHEST 32 8:00 AM LOWEST 8 2:00 PM AVERAGE 20 .......................................................... THE LANDER WY CLIMATE NORMALS FOR TODAY NORMAL RECORD YEAR MAXIMUM TEMPERATURE (F) 85 98 1960 MINIMUM TEMPERATURE (F) 53 39 1966 1974 SUNRISE AND SUNSET AUGUST 21 2025........SUNRISE 6:28 AM MDT SUNSET 8:07 PM MDT AUGUST 22 2025........SUNRISE 6:29 AM MDT SUNSET 8:05 PM MDT - INDICATES NEGATIVE NUMBERS. R INDICATES RECORD WAS SET OR TIED. MM INDICATES DATA IS MISSING. T INDICATES TRACE AMOUNT. $$