397  
FNUS75 KFGZ 302100  
FWSFGZ  
 
SPOT FORECAST FOR CATHEDRAL WASH SAR...GLEN CANYON NATIONAL RECREATION AREA  
NATIONAL WEATHER SERVICE FLAGSTAFF AZ  
200 PM MST SUN AUG 30 2026  
 
FORECAST IS BASED ON FORECAST START TIME OF 1400 MST ON AUGUST 30.  
IF CONDITIONS BECOME UNREPRESENTATIVE, CONTACT THE  
NATIONAL WEATHER SERVICE IN FLAGSTAFF, AZ  
   
DISCUSSION  
SHOWERS AND THUNDERSTORMS WILL LINGER ACROSS THE AREA  
THROUGH THIS AFTERNOON, DECREASING AFTER 5 PM MST. A SLIGHT CHANCE  
OF STORMS WILL THEN CONTINUE THROUGH THE EVENING, INCREASING AFTER  
AROUND 3 AM MST AS A CLUSTER OF STORMS MAY MOVE IN FROM THE SOUTH.  
HEAVY RAINFALL REMAINS A POSSIBILITY WITH ANY STORMS THAT DEVELOP.  
   
REST OF TODAY  
 
SKY/WEATHER.........MOSTLY CLOUDY. SHOWERS AND THUNDERSTORMS  
LIKELY AT TIMES THROUGH AROUND 5 PM MST, THEN  
DECREASING.  
CHANCE OF PCPN......60 PERCENT THROUGH 5 PM, THEN 20 PERCENT.  
MAX TEMPERATURE.....AROUND 80.  
MIN HUMIDITY........30 TO 40 PERCENT.  
SURFACE WINDS (MPH).SOUTHWEST 10 TO 15 MPH WITH GUSTS TO 20 MPH.  
GUSTY/ERRATIC WINDS TO 30 MPH NEAR THUNDERSTORMS.  
   
TONIGHT  
 
SKY/WEATHER.........PARTLY CLOUDY THEN BECOMING MOSTLY CLOUDY.  
SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS IN THE  
EVENING, THEN A CHANCE OF SHOWERS AND THUNDERSTORMS  
AFTER 3 AM MST.  
CHANCE OF PCPN......20 PERCENT THROUGH AROUND 3 AM, THEN INCREASING  
TO 50 PERCENT.  
MIN TEMPERATURE.....AROUND 68.  
MAX HUMIDITY........70 PERCENT.  
SURFACE WINDS (MPH).SOUTH WINDS 5 TO 10 MPH, EXCEPT GUSTY AND ERRATIC  
WINDS NEAR THUNDERSTORMS.  
 
A WEATHER FORECAST TABLE FOR YOUR SPOT LOCATION IS LINKED.  
THE INFORMATION PROVIDED BY THIS SITE IS FOR PLANNING PURPOSES ONLY  
AND IS NOT INTENDED TO SUBSTITUTE INFORMATION PROVIDED BY AN OFFICIAL  
NATIONAL WEATHER SERVICE SPOT FORECAST.  
HTTPS://WEATHER.GOV/DLH/FWD?LAT=36.8384&LON=-111.6185&CLAT=36.8384&CLON=-111.6185  
 
 
FORECASTER...JOHNDROW  
REQUESTED BY...NEWMAN  
TYPE OF REQUEST...SAR  
.TAG 2620942.0/FGZ  
.DELDT 08/30/26  
.FORMATTERVERSION 2.0.0  
.EMAIL GLCA_DISPATCH_CENTER@NPS.GOV  
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