381
FNUS73 KUNR 250047
FWSUNR

Spot Forecast for Custer Buffalo Roundup...EM
National Weather Service Rapid City SD
647 PM MDT Thu Sep 24 2026

Forecast is based on forecast start time of 0600 MDT on September 25.
If conditions become unrepresentative, contact the National Weather
Service.

.DISCUSSION...For Friday morning, fog and low clouds may be
possible in the early to late morning, however models tend to keep
any fog/clouds further east from The Roundup. Temperature in the
morning is expected in the low 50s, but will warm up to the low
70s by afternoon. Winds will become breezy out of the southeast,
with gusts around 20 mph in the afternoon. Isolated light rain
showers may be possible in the afternoon and evening, however
better chance that the event remains dry through the day.

Saturday will be a bit warmer, with the high reaching into the
upper 70s. Similar wind speeds expected Saturday, with dry
conditions.



.FRIDAY...

Sky/weather.........Partly sunny (45-55 percent) then becoming
                    sunny (15-25 percent) then becoming partly
                    sunny (50-60 percent).
Max temperature.....Around 72.
Min humidity........49 percent.
Chance of pcpn......0 percent.
Max apparent temp...71.
Max apparent temp...71.
Surface winds (mph).Light winds becoming southeast 6 to 10 mph with
                    gusts to around 21 mph late in the morning.
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 (%).........57  70  68  60  56  54  37  34  22  53  54  60
Weather cov.....
Weather type....
Tstm cov........
Chc of pcpn (%).0   0   0   0   0   0   0   0   0   0   0   0
Temp............54  55  58  61  63  64  66  67  68  70  71  70
RH..............77  77  75  70  67  67  61  59  55  51  49  51
Heat index (F)..54  55  58  61  63  64  66  67  68  70  71  70
Wind chill (F)..54  55  58  61  63  64  66  67  68  70  71  70
Surface wnd dir.W   W   S   SE  SE  SE  SE  SE  SE  SE  SE  SE
Surface wnd spd.3   2   2   2   3   6   8   9   10  10  10  9
Surface wnd gst.7   7   7   8   12  14  16  18  20  21  20  20

.FRIDAY NIGHT...

Sky/weather.........Partly cloudy (45-55 percent) then becoming
                    mostly cloudy (50-60 percent) then becoming
                    partly cloudy (25-35 percent).
Min temperature.....Around 56.
Max humidity........87 percent.
Chance of pcpn......10 percent.
Max apparent temp...67.
Max apparent temp...67.
Surface winds (mph).Southeast winds 5 to 8 mph shifting to the west
                    8 to 10 mph after 3 am. Gusts up to 20 mph.
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 (%).........47  49  53  57  50  43  37  31  20  12  27  21
Weather cov.....
Weather type....
Tstm cov........
Chc of pcpn (%).10  10  10  10  10  10  0   0   0   0   0   0
Temp............67  63  61  60  59  58  58  58  57  57  56  58
RH..............59  70  75  78  83  87  87  87  86  83  83  69
Heat index (F)..67  63  61  60  59  58  58  58  57  57  56  58
Wind chill (F)..67  63  61  60  59  58  58  58  57  57  56  58
Surface wnd dir.SE  SE  SE  SE  S   S   S   SW  SW  SW  W   W
Surface wnd spd.8   7   6   5   5   5   6   7   7   8   9   10
Surface wnd gst.20  16  14  12  12  13  13  13  14  15  17  20

.SATURDAY...

Sky/weather.........Sunny (5-15 percent).
Max temperature.....Around 79.
Min humidity........34 percent.
Chance of pcpn......10 percent.
Max apparent temp...78.
Max apparent temp...78.
Surface winds (mph).Northwest winds 6 to 10 mph shifting to the
                    east 7 to 8 mph late in the afternoon. Gusts up
                    to 21 mph.
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 (%).........20  22  14  6   4   3   1   3   5   7   6   4
Weather cov.....
Weather type....
Tstm cov........
Chc of pcpn (%).0   0   0   0   0   0   10  10  10  10  10  10
Temp............58  59  64  69  73  75  77  78  78  78  77  75
RH..............62  57  50  44  40  37  35  34  35  35  36  37
Heat index (F)..58  59  64  69  73  75  77  78  78  78  77  75
Wind chill (F)..58  59  64  69  73  75  77  78  78  78  77  75
Surface wnd dir.W   NW  NW  NW  N   NE  E   E   E   E   E   E
Surface wnd spd.10  10  8   6   6   7   8   8   8   8   8   7
Surface wnd gst.21  20  17  15  15  16  17  18  20  20  20  18

$$
Forecaster...AD
Requested by...Matt Snyder
Type of request...OTHER
.TAG 2622064.0/UNR
.DELDT 09/24/26
.FormatterVersion 2.0.0
.EMAIL Lydia.Austin@state.sd.us,Lance.Catron@state.sd.us,Jason.Gooder@state.sd.us,Matt.Snyder@state.sd.us,sesser@custercountysd.com