Live Weather & Forecast

Weather in Custer

South Dakota, United States · Real-time conditions & 3-day outlook

Flag of United States
Overcast
6°C
Feels like 4°C
42°F / Feels 39°F
Overcast
Custer, South Dakota
🌙 Nighttime
Updated: 2026-04-13 02:45
💧
Humidity
67%
💨
Wind
8.6 km/h WNW
🌬️
Wind Gust
18.1 km/h
🌡️
Pressure
1008 mb
👁️
Visibility
16 km
☀️
UV Index
0 (Low)
🌧️
Precipitation
0 mm
☁️
Cloud Cover
0%
💦
Dew Point
-6.7°C
🌐
Wind Degree
293°

Air Quality Index

US EPA: Good UK DEFRA: Low (1)
CO
129.9 μg/m³
NO₂
3.7 μg/m³
O₃
83 μg/m³
SO₂
1.3 μg/m³
PM 2.5
3.3 μg/m³
PM 10
9.5 μg/m³

Weather Alerts 1

Met · Severe · Expected
Red Flag Warning issued April 12 at 12:12PM MDT until April 13 at 9:00PM MDT by NWS Rapid City SD

...CRITICAL FIRE WEATHER CONDITIONS THROUGH MONDAY ACROSS PORTIONS OF NORTHEASTERN WYOMING AND WESTERN SOUTH DAKOTA... .Warm, very dry, and breezy weather will support critical fire weather conditions over portions of northeastern Wyoming and western South Dakota this afternoon and again Monday afternoon. * AFFECTED AREA...Fire Weather Zones 315 Southern Campbell, 317 Weston County Plains, 320 C...

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.

Effective: 2026-04-12T12:12:00-06:00  ·  Expires: 2026-04-13T03:15:00-06:00

Today's Hourly Forecast

24-hour breakdown for Custer, South Dakota

12 AM
Partly Cloudy
15°
Partly Cloudy
💧 28% 💨 5.4 km/h
1 AM
Partly Cloudy
14°
Partly Cloudy
💧 27% 💨 9.4 km/h
2 AM
Overcast
6°
Overcast
💧 67% 💨 8.6 km/h
3 AM
Partly Cloudy
12°
Partly Cloudy
💧 30% 💨 10.1 km/h
4 AM
Overcast
11°
Overcast
💧 36% 💨 12.6 km/h
5 AM
Overcast
10°
Overcast
💧 45% 💨 15.1 km/h
6 AM
Clear
9°
Clear
💧 53% 💨 10.8 km/h
7 AM
Sunny
9°
Sunny
💧 51% 💨 11.5 km/h
8 AM
Sunny
10°
Sunny
💧 56% 💨 18.7 km/h
9 AM
Sunny
10°
Sunny
💧 51% 💨 25.6 km/h
10 AM
Sunny
12°
Sunny
💧 41% 💨 22.7 km/h
11 AM
Sunny
14°
Sunny
💧 33% 💨 24.8 km/h
12 PM
Sunny
15°
Sunny
💧 31% 💨 27.7 km/h
1 PM
Sunny
16°
Sunny
💧 27% 💨 37.4 km/h
2 PM
Sunny
17°
Sunny
💧 18% 💨 37.1 km/h
3 PM
Sunny
17°
Sunny
💧 18% 💨 37.4 km/h
4 PM
Sunny
18°
Sunny
💧 27% 💨 40.3 km/h
5 PM
Sunny
18°
Sunny
💧 22% 💨 47.2 km/h
6 PM
Sunny
17°
Sunny
💧 23% 💨 33.5 km/h
7 PM
Sunny
15°
Sunny
💧 23% 💨 28.8 km/h
8 PM
Clear
14°
Clear
💧 25% 💨 22.7 km/h
9 PM
Clear
13°
Clear
💧 27% 💨 17.6 km/h
10 PM
Clear
12°
Clear
💧 23% 💨 11.2 km/h
11 PM
Clear
11°
Clear
💧 34% 💨 6.1 km/h

3-Day Forecast

Daily overview for Custer, South Dakota

Today
Sunny
Sunny
18° / 8°
🌧️ 0% chance of rain
💧 Avg. humidity: 32%
💨 Max wind: 47.2 km/h
🌧️ Total precip: 0 mm
☀️ UV Index: 1.6
🌅 Sunrise: 06:15 AM
🌇 Sunset: 07:36 PM
🌙 Waning Crescent
🌑 Moon: 23% lit
Tue, Apr 14
Partly Cloudy
Partly Cloudy
13° / 4°
🌧️ 0% chance of rain
💧 Avg. humidity: 34%
💨 Max wind: 23 km/h
🌧️ Total precip: 0 mm
☀️ UV Index: 1.3
🌅 Sunrise: 06:13 AM
🌇 Sunset: 07:37 PM
🌙 Waning Crescent
🌑 Moon: 15% lit
Wed, Apr 15
Sunny
Sunny
18° / 4°
🌧️ 0% chance of rain
💧 Avg. humidity: 35%
💨 Max wind: 20.9 km/h
🌧️ Total precip: 0 mm
☀️ UV Index: 1.6
🌅 Sunrise: 06:11 AM
🌇 Sunset: 07:39 PM
🌙 Waning Crescent
🌑 Moon: 8% lit

Best Time to Visit Custer

Plan your trip to Custer, United States around the most favorable weather conditions.

Peak Season
June – September
Warm, dry summers — ideal for outdoor activities.
Shoulder Season
April – May, October
Fewer crowds, moderate prices, mild weather.
Off Season
November – March
Cooler temperatures; some regions may experience rain or snow.
← Back to Custer 🗓 View Holidays 2026

Frequently Asked Questions

What is the current weather in Custer?
Current conditions in Custer: Overcast, temperature 6°C, humidity 67%.
What is the best time to visit Custer?
The best time to visit Custer is typically June – September. Warm, dry summers — ideal for outdoor activities.
What is the climate like in Custer?
Custer is located at approximately 43.8° latitude. It has a temperate climate with warm summers and cold winters.
Does it rain a lot in Custer?
The wettest period in Custer is typically during November – March. Cooler temperatures; some regions may experience rain or snow.
What should I pack for a trip to Custer?
For visits to Custer during June – September: light clothing and sun protection. For November – March: layers and a waterproof jacket are recommended.
What country is Custer in?
Custer is located in United States, in the state of South Dakota.
What are the public holidays in Custer in 2026?
View the 2026 public holidays for Custer on our Holidays page.
What are the GPS coordinates used for the weather forecast in Custer?
The weather forecast for Custer uses coordinates 43.7667, -103.5988.