423
FNUS73 KUNR 252310
FWSUNR

Spot Forecast for CSP Buffalo Roundup...Custer State Park
National Weather Service Rapid City SD
510 PM MDT Thu Sep 25 2025

Forecast is based on forecast start time of 0600 MDT on September 26.
If conditions become unrepresentative, contact the National Weather
Service.

.DISCUSSION...
Dry conditions are expected from now through the weekend so no
worries of precipitation during the roundup. The only concern
Friday will be a dry cool front passing through during the day
that will cause breezy winds to move into the region. Winds in the
morning will be light out of the southwest, but late morning or
early afternoon winds will transition to out of the northwest
becoming gusty, max gusts expected around 30 mph over the event
area.

Temperatures in the early morning with a high temperature Friday
around 80 in the afternoon.

.FRIDAY...

Sky/weather.........Sunny (0-10 percent).
Max temperature.....Around 82.
Min humidity........19 percent.
Chance of pcpn......0 percent.
Max apparent temp...79.
Max apparent temp...79.
Surface winds (mph).West winds 9 to 10 mph with gusts to around 21
                    mph shifting to the north 13 to 14 mph with
                    gusts to around 28 mph late in the afternoon.
Rainfall amount.....0.00 inches.
Snowfall amount.....0.0 inches.

TIME (MDT)      6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........6   4   2   1   1   2   3   5   7   9   9   8
Weather cov.....
Weather type....
Tstm cov........
Chc of pcpn (%).0   0   0   0   0   0   0   0   0   0   0   0
Temp............56  57  62  68  75  79  80  80  81  79  77  76
RH..............47  45  39  31  25  22  21  21  19  20  22  22
Heat index (F)..56  57  62  68  75  79  79  79  79  79  77  76
Wind chill (F)..56  57  62  68  75  79  79  79  79  79  77  76
Surface wnd dir.W   W   W   W   W   NW  NW  NW  N   N   N   N
Surface wnd spd.9   10  10  10  10  10  10  12  13  14  14  14
Surface wnd gst.16  18  18  20  21  21  22  24  25  26  28  28

.FRIDAY NIGHT...

Sky/weather.........Mostly clear (0-10 percent).
Min temperature.....Around 48.
Max humidity........56 percent.
Chance of pcpn......0 percent.
Max apparent temp...70.
Max apparent temp...70.
Surface winds (mph).North winds 5 to 13 mph with gusts to around 28
                    mph becoming light.
Rainfall amount.....0.00 inches.
Snowfall amount.....0.0 inches.

TIME (MDT)      6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
Sky (%).........8   7   9   3   7   7   6   6   6   6   7   7
Weather cov.....
Weather type....
Tstm cov........
Chc of pcpn (%).0   0   0   0   0   0   0   0   0   0   0   0
Temp............70  66  63  60  59  58  56  54  53  51  50  49
RH..............28  30  34  37  39  40  43  47  48  52  54  56
Heat index (F)..70  66  63  60  59  58  56  54  53  51  48  49
Wind chill (F)..70  66  63  60  59  58  56  54  53  51  48  49
Surface wnd dir.N   N   N   N   N   N   N   N   N   N   NW  NW
Surface wnd spd.13  13  12  12  12  12  10  9   7   6   5   2
Surface wnd gst.26  28  26  25  24  23  21  18  15  13  9   7

$$
Forecaster...AD
Requested by...Matt Snyder
Type of request...OTHER
.TAG 2522459.0/UNR
.DELDT 09/25/25
.FormatterVersion 2.0.0
.EMAIL Matt.Snyder@state.sd.us,Lydia.Austin@state.sd.us,Lance.Catron@state.sd.us,Jason.Gooder@state.sd.us