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July 18th, 2026 :: 1:10 am MDT   

Local Weather Report for
Custer
South Dakota, United States

 Current Custer Weather Conditions Updated July 17th at 11:53 pm 
Mostly Clear
Temperature:66°F Dew Point:57°F
Barometer:30.24 inHg Wind:N 19 Mph
Humidity:72.7% Visibility:0M
 
 Custer Weather Forecast Summary  
 
Today
Jul 18th
Sunday
Jul 19th
Monday
Jul 20th
Tuesday
Jul 21st
Wednesday
Jul 22nd
Mostly Sunny Mostly Sunny Mostly Sunny Mostly Sunny Mostly Sunny
97°F
102°F
73°F
96°F
75°F
86°F
66°F
81°F
62°F
 
 Custer Detailed Weather Forecast  
 
Saturday, July 18th, 2026
Overnight Temperature: 75°F
Mostly clear.
Morning Temperature: 76°F
Sunny. Windy at times.
Afternoon Temperature: 94°F
Sunny. Windy at times.
Evening Temperature: 91°F
Clear with cloudy periods. Windy at times.
Sunday, July 19th, 2026
Overnight Temperature: 74°F
Clear.
Morning Temperature: 80°F
Sunny.
Afternoon Temperature: 100°F
Mostly sunny. Slight chance of a thunderstorm. Windy at times.
Evening Temperature: 93°F
A mix of cloudy and clear skies. Slight chance of a thunderstorm. Windy at times.
Monday, July 20th, 2026
Overnight Temperature: 79°F
Mostly clear.
Morning Temperature: 83°F
Sunny with cloudy periods.
Afternoon Temperature: 96°F
Sunny. Windy.
Evening Temperature: 91°F
A mix of cloudy and clear skies. Windy.
Tuesday, July 21st, 2026
Overnight Temperature: 74°F
Clear with cloudy periods. Windy.
Morning Temperature: 69°F
Mostly sunny. Windy at times.
Afternoon Temperature: 83°F
Mostly sunny. Windy at times.
Evening Temperature: 81°F
Mostly clear. Windy at times.
Wednesday, July 22nd, 2026
Overnight Temperature: 66°F
A mix of cloudy and clear skies with a chance of showers.
Morning Temperature: 63°F
Sunny with cloudy periods with a chance of showers. Windy at times.
Afternoon Temperature: 78°F
Sunny. Windy at times.
Evening Temperature: 76°F
Clear. Windy at times.
Thursday, July 23rd, 2026
Overnight Temperature: 65°F
Mostly clear.
Morning Temperature: 69°F
Mostly sunny.
Afternoon Temperature: 83°F
A mix of sun and cloud. Windy at times.
Evening Temperature: 79°F
A mix of cloudy and clear skies. Slight chance of a thunderstorm.
Friday, July 24th, 2026
Overnight Temperature: 71°F
A mix of cloudy and clear skies with a slight chance of showers or thundershowers.
Morning Temperature: 70°F
A mix of cloud and sun. Windy at times.
Afternoon Temperature: 79°F
Mostly cloudy with a slight chance of showers or thundershowers. Windy at times.
Evening Temperature: 68°F
A mix of clear and cloudy skies with a chance of showers. Windy at times.
Saturday, July 25th, 2026
Overnight Temperature: 64°F
Clear.
Morning Temperature: 71°F
Sunny. Windy at times.
Afternoon Temperature: 90°F
Sunny. Windy at times.
Evening Temperature: 85°F
Clear. Windy at times.





 

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11:52 PM  73°F
 
 
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11:55 PM  73°F
 
 
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11:55 PM  73°F
 
 
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11:53 PM  77°F
 
 
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11:52 PM  73°F
 
 
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11:55 PM  75°F
 
 
Gillette, WY 
11:53 PM  72°F
Mostly Clear
 
Douglas, WY 
11:53 PM  75°F
 

 
This WeatherCity Weather Forecast for Custer, South Dakota, United States is computed using a computer-generated forecast model and should be considered experimental. Please confirm this weather information with your official weather information office

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