Expires:202601011200;;591076 FPUS53 KUNR 010558 ZFPUNR Zone Forecast for Western SD and Northeastern WY National Weather Service Rapid City SD 1057 PM MST Wed Dec 31 2025 SDZ078-011200- Southern Perkins- Including the cities of Usta, Bison, Sorum, and Zeona 1057 PM MST Wed Dec 31 2025 ...DENSE FOG ADVISORY IN EFFECT UNTIL 6 AM MST /7 AM CST/ THURSDAY... .OVERNIGHT...Cloudy. Widespread dense freezing fog. Near steady temperature in the lower 20s. South winds 5 to 10 mph with gusts up to 20 mph. .NEW YEARS DAY...Widespread freezing fog in the morning. Partly cloudy. Highs in the lower 40s. West winds 10 to 15 mph. .THURSDAY NIGHT...Partly cloudy in the evening, then becoming mostly cloudy. Lows 15 to 20. East winds 5 to 10 mph. .FRIDAY...Mostly cloudy. Highs around 30. Southeast winds 5 to 10 mph. .FRIDAY NIGHT...Becoming partly cloudy. Lows in the lower 20s. Southwest winds 10 to 15 mph. .SATURDAY...Partly cloudy. Highs in the upper 30s. .SATURDAY NIGHT...Partly cloudy in the evening, then becoming mostly cloudy. Lows 15 to 20. .SUNDAY...Partly cloudy. Highs in the mid 40s. .SUNDAY NIGHT...Partly cloudy. Lows in the mid 20s. .MONDAY...Partly cloudy. Highs in the mid 40s. .MONDAY NIGHT...Partly cloudy. Lows in the mid 20s. .TUESDAY...Partly cloudy. Highs in the mid 40s. .TUESDAY NIGHT...Partly cloudy. Lows in the lower 20s. .WEDNESDAY...Becoming mostly cloudy. Highs in the lower 40s. $$