Forecast and Conditions for Keystone, South Dakota

Updated: 8:05 PM MDT on October 10, 2008
Observed at Prairie Creek, Rapid City, South Dakota
Temperature 32.4 °F / 0.2 °C
Windchill 32 °F / 0 °C
Humidity 91%
Dew Point 30 °F / -1 °C
Wind South at 0.0 mph / 0.0 km/h
Pressure 30.21 in / 1022.9 hPa (Rising)
Conditions Light Snow
Visibility 9.0 miles / 14.5 kilometers
Clouds Mostly Cloudy (BKN) : 400 ft / 121 m
Overcast (OVC) : 800 ft / 243 m
Yesterday's Maximum 49 °F / 9 °C
Yesterday's Minimum 36 °F / 2 °C
Normal high 65 °F / 18 °C
Normal low 37 °F / 2 °C
Record high 88 °F / 31 °C (1955)
Record low 20 °F / -6 °C (1985)
Yesterday's Heating Degree Days 22
Yesterday's Cooling Degree Days 0
Sunrise07:02 AM (MDT)
Sunset06:17 PM (MDT)
Moon Rise04:18 PM (MDT)
Moon Set02:10 AM (MDT)
Moon Phase
Winter Weather Advisory, Winter Storm Warning
Statement as of 3:52 PM MDT on October 10, 2008


... Winter Weather Advisory in effect until 12 PM MDT Saturday for snow...
... Winter Storm Warning in effect from 6 PM Saturday to 12 PM MDT
Sunday for heavy snow...

The National Weather Service in Rapid City has issued a Winter
Storm Warning... which is in effect from 6 PM Saturday to 12 PM
MDT Sunday. A Winter Weather Advisory has also been issued. This
Winter Weather Advisory is in effect until 12 PM MDT Saturday.
The Winter Storm Watch is no longer in effect.

Accumulating snow is expected again this evening with snowfall
intensifying late tonight into early Saturday morning. Another 3
to 6 inches are expected tonight. A break in the heavier snowfall
should occur Saturday afternoon... before the main storm system
hits the area Saturday night. Additional snow accumulations of 6
to 12 inches are possible Saturday night. The precipitation is
expected to taper off by late Sunday morning.

A Winter Storm Warning means severe winter conditions are
expected or occurring.

A Winter Weather Advisory means snow... freezing precipitation...
strong winds... and cold temperatures will create hazardous
conditions. Use caution when outdoors or traveling.






Forecast as of 3:53 PM MDT on October 10, 2008

Winter Weather Advisory in effect until 12 PM MDT Saturday...
Tonight
Snow. Snow accumulation of 2 to 5 inches. Lows in the mid 20s. Northeast winds 10 to 20 mph.
Saturday
Snow in the morning...then snow likely in the afternoon. Snow accumulation of 1 to 2 inches. Highs in the upper 20s. Northeast winds 10 to 15 mph.
Saturday Night
Snow. Snow may be heavy at times. Snow accumulation of 3 to 9 inches. Lows in the mid 20s. Northeast winds 5 to 20 mph.
Sunday
Snow in the morning...then snow likely in the afternoon. Light snow accumulations. Highs 26 to 32. Northwest winds 10 to 15 mph. Chance of snow 80 percent.
Sunday Night
Mostly cloudy. Lows around 20. West winds 5 to 15 mph.
Columbus Day
Mostly sunny. Highs 35 to 41.
Monday Night
Partly cloudy. Lows in the mid 20s.
Tuesday
Sunny. Highs in the lower 50s.
Tuesday Night
Mostly clear. Lows in the upper 20s.
Wednesday
Sunny. Highs in the mid 50s.
Wednesday Night
Partly cloudy. Lows 27 to 33.
Thursday
Mostly sunny. Highs in the lower 50s.
Thursday Night
Partly cloudy. Lows 26 to 32.
Friday
Sunny. Highs in the mid 50s.
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