Custer weather live forecast

Today's maximum temperature in Custer is expected to be 21°C. Select a day from the live weather forecast for Custer, South Dakota, USA for more weather parameters.

Saturday
16th May
21

7

7

8
Sunday
17th May
14

4

4

6
Monday
18th May
4

-1

0

2
Tuesday
19th May
8

-1

8

6
Wednesday
20th May
13

0

7

7

5-day weather forecast updated at 04:02 on Saturday 16th May 2026 GMT

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The 5-day weather forecast for South Dakota (Custer) is provided by the Swiss meteorological agency, meteoblue. Find out more about our data sources.

Custer weather forecast by day

Below are the detailed weather forecasts for Custer for the next 5 days.

Custer weather for Saturday 16th May 2026

Expect isolated thunderstorms in Custer, South Dakota with a maximum temperature of 21°C, maximum UV of 8 (Very High) and 7 hours of bright sunshine. There are 2-5 mm of rainfall expected with 81% chance of some rain and a gentle breeze of 16 kph from the south-east.

21
°C maximum temperature
7
°C minimum temperature
isolated thunderstorms
7
hours of sunshine
8
UV index (Very High)
81
% chance of some rain
<5
mm of rainfall expected
21
°C wind chill
16
kph wind from SE

Custer weather for Sunday 17th May 2026

Expect isolated thunderstorms in Custer, South Dakota with a maximum temperature of 14°C, maximum UV of 6 (High) and 4 hours of bright sunshine. There are 5-10 mm of rainfall expected with 68% chance of some rain and a gentle breeze of 15 kph from the north.

14
°C maximum temperature
4
°C minimum temperature
isolated thunderstorms
4
hours of sunshine
6
UV index (High)
68
% chance of some rain
<10
mm of rainfall expected
0
no heat & humidity
15
kph wind from N

Custer weather for Monday 18th May 2026

Expect cloudy with sleet or snow in Custer, South Dakota with a maximum temperature of 4°C, maximum UV of 2 (Low) and no hours of bright sunshine. There are 10-20 mm of sleet/snow expected with 84% chance of some sleet or snow and a gentle breeze of 19 kph from the north.

4
°C maximum temperature
-1
°C minimum temperature
cloudy with sleet or snow
0
hours of sunshine
2
UV index (Low)
84
% chance of some sleet or snow
<20
mm of sleet/snow expected
0
°C wind chill
19
kph wind from N

Custer weather for Tuesday 19th May 2026

Expect broken clouds in Custer, South Dakota with a maximum temperature of 8°C, maximum UV of 6 (High) and 8 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 13 kph from the north-west.

8
°C maximum temperature
-1
°C minimum temperature
broken clouds
8
hours of sunshine
6
UV index (High)
0
mm of rainfall expected
5
°C wind chill
13
kph wind from NW

Custer weather for Wednesday 20th May 2026

Expect sunshine and showers in Custer, South Dakota with a maximum temperature of 13°C, maximum UV of 7 (High) and 7 hours of bright sunshine. There are 0-2 mm of rainfall expected with 54% chance of some rain and a light breeze of 12 kph from the south-west.