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Custer weather in December 2025
Expect daytime maximum temperatures of 1°C in Custer, South Dakota in December based on long-term weather averages. There are 5 hours of sunshine per day on average, which might fall as snow.
- 1°C max day temperature
1 - 5 hours of sunshine per day
- 8 days with some rainfall
8 - -11°C min night temperature
-11 - 9 hours of daylight per day
9 - No heat & humidity
0 - 12 mm of monthly rainfall
12 - 1 (Low) UV index
1
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Custer by month
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Recommended for South Dakota
The December weather guide for South Dakota (Custer) shows long term weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Find out more about our data sources.
Metric (°C / mm) | Imperial (°F / inches)
More about the USA
How cold is it in Custer in December?
Daytime temperatures usually reach 1°C in Custer in December, falling to -11°C at night.
How sunny is it in Custer in December?
There are normally 5 hours of bright sunshine each day in Custer in December - that's 56% of daylight hours.
Does it rain in Custer in December?
There are usually 8 days with some rain in Custer in December and the average monthly rainfall is 12mm. Rain may fall as snow in this month.
Custer December sunrise & sunset times
Browse the sunrise and sunset times for Custer in December 2025. Select a month to view Custer sunrise and sunset times for the next 12 months.
JanFebMarAprMayJunJulAugSepOctNovDec
| Date | Sunrise times | Sunset times |
|---|---|---|
| Monday, 1st December 2025 | 07:09 | 16:18 |
| Tuesday, 16th December 2025 | 07:22 | 16:18 |
| Wednesday, 31st December 2025 | 07:28 | 16:27 |
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