651  
FNUS73 KUNR 241807  
FWSUNR  
 
SPOT FORECAST FOR CAMPBELL COUNTY FAIR & DEMO DERBY...CC EM & HS  
NATIONAL WEATHER SERVICE RAPID CITY SD  
1207 PM MDT FRI JUL 24 2026  
 
FORECAST IS BASED ON FORECAST START TIME OF 1700 MDT ON JULY 24.  
IF CONDITIONS BECOME UNREPRESENTATIVE, CONTACT THE NATIONAL WEATHER  
SERVICE.  
 
...RED FLAG WARNING IN EFFECT FROM NOON SATURDAY TO MIDNIGHT MDT  
SATURDAY NIGHT...  
...HEAT ADVISORY IN EFFECT FROM NOON SATURDAY TO 8 PM MDT  
SUNDAY...  
   
DISCUSSION
 
THE MAIN CONCERN OVER THE WEEKEND WILL BE THE  
EXTREME HEAT. HIGHS TODAY THROUGH SUNDAY WILL BE RIGHT AROUND 100  
IN GILLETTE, WITH A HEAT INDEX BETWEEN 95 AND 100. THE REST OF  
TODAY WILL BE DRY AND MOSTLY CLEAR WITH NO SIGNIFICANT WEATHER  
EXPECTED.  
 
FOR SATURDAY, ANOTHER CONCERN WILL BE THE POTENTIAL FOR  
DRY THUNDERSTORMS. ISOLATED TO SCATTERED SHOWERS/STORMS WILL BE  
POSSIBLE LATE SATURDAY MORNING INTO THE EVENING. WHILE THERE IS  
VERY LITTLE MOISTURE EXPECTED WITH THESE STORMS. DRY LIGHTNING  
WILL THEN BE A CONCERN FOR THE POTENTIAL TO START FIRES. ALSO  
GIVEN THE ENVIRONMENT, EVEN SMALL STORMS COULD POTENTIALLY HAVE  
50-70 MPH GUSTS IF THEY'RE NEAR THE AREA.  
   
REST OF TODAY
 
 
SKY/WEATHER.........SUNNY (10-20 PERCENT).  
MAX TEMPERATURE.....AROUND 98.  
MIN HUMIDITY........17 PERCENT.  
CHANCE OF PCPN......0 PERCENT.  
MAX APPARENT TEMP...93.  
SURFACE WINDS (MPH).NORTH WINDS AROUND 6 MPH WITH GUSTS TO AROUND  
21 MPH.  
RAINFALL AMOUNT.....0.00 INCHES.  
 
TIME (MDT) 5PM  
SKY (%).........14  
WEATHER COV.....  
WEATHER TYPE....  
TSTM COV........  
CHC OF PCPN (%).0  
TEMP............97  
RH..............17  
HEAT INDEX (F)..93  
SURFACE WND DIR.N  
SURFACE WND SPD.6  
SURFACE WND GST.21  
   
TONIGHT
 
 
SKY/WEATHER.........PARTLY CLOUDY (25-35 PERCENT).  
MIN TEMPERATURE.....AROUND 69.  
MAX HUMIDITY........47 PERCENT.  
CHANCE OF PCPN......0 PERCENT.  
MAX APPARENT TEMP...92.  
SURFACE WINDS (MPH).NORTH WINDS AROUND 5 MPH EARLY IN THE EVENING  
BECOMING LIGHT, THEN BECOMING SOUTH 5 TO 7 MPH  
LATE IN THE EVENING. GUSTS UP TO 20 MPH.  
RAINFALL AMOUNT.....0.00 INCHES.  
 
TIME (MDT) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM  
SKY (%).........19 19 23 24 24 30 31 25 35 37 35 36  
WEATHER COV.....  
WEATHER TYPE....  
TSTM COV........  
CHC OF PCPN (%).0 0 0 0 0 0 0 0 0 0 0 0  
TEMP............96 93 89 84 81 78 77 75 74 72 70 69  
RH..............18 20 24 29 32 35 36 38 40 43 46 47  
HEAT INDEX (F)..92 89 86 82 80 78 77 75 74 72 70 69  
SURFACE WND DIR.N N N E SE SE S S S S S S  
SURFACE WND SPD.5 5 3 3 3 5 6 7 7 7 7 7  
SURFACE WND GST.20 17 15 15 14 15 16 16 17 17 17 16  
   
SATURDAY
 
 
SKY/WEATHER.........MOSTLY SUNNY (35-45 PERCENT). ISOLATED  
THUNDERSTORMS IN THE AFTERNOON.  
MAX TEMPERATURE.....AROUND 103.  
MIN HUMIDITY........12 PERCENT.  
CHANCE OF PCPN......20 PERCENT.  
MAX APPARENT TEMP...98.  
SURFACE WINDS (MPH).SOUTH WINDS AROUND 7 MPH SHIFTING TO THE  
SOUTHWEST IN THE LATE MORNING AND AFTERNOON.  
GUSTS UP TO 24 MPH.  
RAINFALL AMOUNT.....0.00 INCHES.  
 
TIME (MDT) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM  
SKY (%).........43 39 33 29 28 30 45 45 45 45 45 47  
WEATHER COV.....  
WEATHER TYPE....  
TSTM COV........ ISO ISO ISO ISO ISO ISO  
CHC OF PCPN (%).0 0 0 0 0 0 20 20 20 20 20 20  
TEMP............70 75 80 86 91 95 97 99 100 102 103 102  
RH..............46 42 36 31 23 18 16 14 13 12 12 12  
HEAT INDEX (F)..70 75 80 84 87 91 93 94 96 98 98 97  
SURFACE WND DIR.S S SW SW SW SW SW SW SW W W W  
SURFACE WND SPD.7 7 7 8 9 10 12 12 10 10 10 9  
SURFACE WND GST.15 16 17 18 20 21 22 23 23 24 23 22  
 

 
FORECASTER...AD  
REQUESTED BY...JIM MITCHELL  
TYPE OF REQUEST...OTHER  
.TAG 2618135.0/UNR  
.DELDT 07/24/26  
.FORMATTERVERSION 2.0.0  
.EMAIL JIMM@CAMPBELLCOFIREWY.GOV  
 
CLICK HERE TO GO TO PREVIOUS BULLETINS.

The Nexlab SD Page
The Nexlab WY Page Main Text Page