Weather Forecast for Custer
South Dakota, United States of America
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Current Weather - Custer: 2°C
Current Weather - Custer: 2°C
South Dakota, United States of America
Clear
Feels like -0°C
Wind
8 km/h NW
Humidity
69%
Pressure
1023 mb
UV Index
0
Visibility
16 km
Sunny
Monday, June 15, 2026
High
22°C
Low
7°C
Rain Chance
2%
Hourly Forecast
21°C
21°C
21°C
21°C
19°C
18°C
17°C
15°C
13°C
12°C
12°C
Day Statistics
Maximum Wind
30 km/h
Humidity
39%
Precipitation
0 mm
UV Index
9
Visibility
10 km
Rain Chance
2%
Snow Chance
0%
Sun & Moon
Sunrise
05:11 AM
Sunset
08:38 PM
Moonrise
04:57 AM
Moonset
09:41 PM
Moon Phase
New Moon
Moon Illumination
2%
Air Quality
PM2.5
6.2
μg/m³
PM10
6.8
μg/m³
NO₂
2.2
μg/m³
O₃
74.8
μg/m³
SO₂
0.3
μg/m³
CO
97.3
μg/m³
Partly Cloudy
Tuesday, June 16, 2026
High
25°C
Low
12°C
Rain Chance
3%
Hourly Forecast
12°C
12°C
12°C
12°C
12°C
12°C
13°C
15°C
17°C
18°C
20°C
21°C
22°C
23°C
23°C
24°C
24°C
24°C
23°C
22°C
19°C
18°C
17°C
16°C
Day Statistics
Maximum Wind
28 km/h
Humidity
41%
Precipitation
0 mm
UV Index
9
Visibility
10 km
Rain Chance
3%
Snow Chance
0%
Sun & Moon
Sunrise
05:11 AM
Sunset
08:38 PM
Moonrise
06:09 AM
Moonset
10:32 PM
Moon Phase
Waxing Crescent
Moon Illumination
6%
Air Quality
PM2.5
4.1
μg/m³
PM10
5.1
μg/m³
NO₂
2.6
μg/m³
O₃
71.3
μg/m³
SO₂
0.3
μg/m³
CO
99
μg/m³
Patchy rain nearby
Wednesday, June 17, 2026
High
21°C
Low
9°C
Rain Chance
17%
Hourly Forecast
16°C
16°C
17°C
17°C
17°C
17°C
17°C
18°C
18°C
19°C
20°C
20°C
20°C
20°C
20°C
19°C
19°C
18°C
17°C
15°C
13°C
12°C
11°C
10°C
Day Statistics
Maximum Wind
41 km/h
Humidity
41%
Precipitation
0 mm
UV Index
10
Visibility
10 km
Rain Chance
17%
Snow Chance
0%
Sun & Moon
Sunrise
05:11 AM
Sunset
08:38 PM
Moonrise
07:31 AM
Moonset
11:11 PM
Moon Phase
Waxing Crescent
Moon Illumination
11%
Air Quality
PM2.5
2.2
μg/m³
PM10
2.6
μg/m³
NO₂
1.4
μg/m³
O₃
87.3
μg/m³
SO₂
0.3
μg/m³
CO
100.4
μg/m³
Sunny
Thursday, June 18, 2026
High
19°C
Low
7°C
Rain Chance
5%
Hourly Forecast
9°C
8°C
8°C
8°C
8°C
8°C
9°C
10°C
12°C
13°C
15°C
16°C
17°C
18°C
18°C
19°C
19°C
19°C
18°C
16°C
14°C
12°C
11°C
10°C
Day Statistics
Maximum Wind
31 km/h
Humidity
53%
Precipitation
0 mm
UV Index
7
Visibility
10 km
Rain Chance
5%
Snow Chance
0%
Sun & Moon
Sunrise
05:12 AM
Sunset
08:39 PM
Moonrise
08:54 AM
Moonset
11:41 PM
Moon Phase
Waxing Crescent
Moon Illumination
19%
Air Quality
PM2.5
0.5
μg/m³
PM10
0.6
μg/m³
NO₂
1.6
μg/m³
O₃
71.2
μg/m³
SO₂
0.2
μg/m³
CO
99.2
μg/m³
Sunny
Friday, June 19, 2026
High
24°C
Low
8°C
Rain Chance
2%
Hourly Forecast
10°C
10°C
9°C
9°C
10°C
10°C
12°C
15°C
16°C
18°C
20°C
21°C
22°C
22°C
23°C
23°C
23°C
23°C
22°C
20°C
18°C
17°C
15°C
14°C
Day Statistics
Maximum Wind
18 km/h
Humidity
49%
Precipitation
0 mm
UV Index
0
Visibility
10 km
Rain Chance
2%
Snow Chance
0%
Sun & Moon
Sunrise
05:12 AM
Sunset
08:39 PM
Moonrise
10:15 AM
Moonset
Does not set today
Moon Phase
Waxing Crescent
Moon Illumination
28%
Air Quality
PM2.5
0.7
μg/m³
PM10
0.8
μg/m³
NO₂
4.5
μg/m³
O₃
59
μg/m³
SO₂
0.2
μg/m³
CO
111.1
μg/m³
Patchy rain nearby
Saturday, June 20, 2026
High
22°C
Low
10°C
Rain Chance
17%
Hourly Forecast
13°C
12°C
11°C
11°C
10°C
10°C
11°C
12°C
14°C
15°C
17°C
18°C
19°C
20°C
21°C
21°C
21°C
21°C
19°C
18°C
16°C
15°C
14°C
13°C
Day Statistics
Maximum Wind
25 km/h
Humidity
59%
Precipitation
0 mm
UV Index
4
Visibility
10 km
Rain Chance
17%
Snow Chance
0%
Sun & Moon
Sunrise
05:12 AM
Sunset
08:39 PM
Moonrise
11:33 AM
Moonset
12:05 AM
Moon Phase
First Quarter
Moon Illumination
38%
Moderate rain
Sunday, June 21, 2026
High
15°C
Low
10°C
Rain Chance
92%
Hourly Forecast
12°C
12°C
11°C
11°C
12°C
12°C
13°C
13°C
13°C
13°C
13°C
13°C
13°C
13°C
14°C
14°C
14°C
14°C
14°C
14°C
14°C
13°C
13°C
13°C
Day Statistics
Maximum Wind
18 km/h
Humidity
96%
Precipitation
10 mm
UV Index
3
Visibility
10 km
Rain Chance
92%
Snow Chance
0%
Sun & Moon
Sunrise
05:12 AM
Sunset
08:39 PM
Moonrise
12:46 PM
Moonset
12:27 AM
Moon Phase
First Quarter
Moon Illumination
48%
Weather Alerts
Red Flag Warning issued June 14 at 9:33PM MDT until June 15 at 8:00PM MDT by NWS Rapid City SD
...RED FLAG WARNING REMAINS IN EFFECT FROM NOON TO 8 PM MDT MONDAY DUE TO GUSTY WINDS AND LOW RELATIVE HUMIDITY FOR FALL RIVER COUNTY AREA, PINE RIDGE AREA, BADLANDS AREA, BENNETT COUNTY AREA, AND WESTON COUNTY PLAINS... .Warmer dry air will push into the area tomorrow. Relative humidity across portions of northeastern Wyoming and far southwestern South Dakota will drop to near 15 percent. The dry air will combine with gusty northwest winds to support critical fire weather conditions Monday afternoon and early evening. * AFFECTED AREA...Fire Weather Zones 317, 322, 326, 332, and 333. * TIMING...From noon to 8 PM MDT Monday. * WINDS...Northwest winds 15 to 30 mph with gusts up to 40 mph. * RELATIVE HUMIDITY...Relative Humidity as low as 15 percent. * IMPACTS...Any fires that develop will spread rapidly. Outdoor burning is not recommended.
A Red Flag Warning means that critical fire weather conditions are either occurring now, or will shortly. A combination of strong winds, low relative humidity, and warm temperatures can contribute to extreme fire behavior.
Red Flag Warning issued June 14 at 11:50AM MDT until June 15 at 8:00PM MDT by NWS Rapid City SD
...RED FLAG WARNING IN EFFECT FROM NOON TO 8 PM MDT MONDAY DUE TO GUSTY WINDS AND LOW RELATIVE HUMIDITY FOR FALL RIVER COUNTY AREA, PINE RIDGE AREA, AND WESTON COUNTY PLAINS... .Warmer dry air will push into the area tomorrow. Relative humidity across portions of northeastern Wyoming and far southwestern South Dakota will drop to near 15 percent. The dry air will combine with gusty northwest winds to support critical fire weather conditions Monday afternoon and early evening. The National Weather Service in Rapid City SD has issued a Red Flag Warning. * AFFECTED AREA...Fire Weather Zones 317, 322, and 326. * TIMING...From noon to 8 PM MDT Monday. * WINDS...Northwest winds 15 to 30 mph with gusts up to 40 mph. * RELATIVE HUMIDITY...Relative Humidity as low as 15 percent. * IMPACTS...Any fires that develop will spread rapidly. Outdoor burning is not recommended.
A Red Flag Warning means that critical fire weather conditions are either occurring now, or will shortly. A combination of strong winds, low relative humidity, and warm temperatures can contribute to extreme fire behavior.
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