What is today's weather forecast for Custer State Park, SD?

Today's forecast for Custer State Park shows a high of 60 degrees and a low of 39 degrees Fahrenheit. Sunny, with a high near 60.

What is the 7-day weather forecast for Custer State Park, SD?

The 7-day forecast for Custer State Park shows highs from 36 to 60 degrees and lows from 25 to 45 degrees Fahrenheit. Expect precipitation on 3 days with chances of 20% or higher.

Will it rain in Custer State Park, SD this week?

Yes, rain is possible in Custer State Park this week. Precipitation chances: Wednesday (50% chance), Friday (50% chance), Saturday (50% chance).

How accurate is the Custer State Park weather forecast?

WeatherForYou provides highly accurate Custer State Park forecasts using National Weather Service data and current conditions from the nearest available weather stations, often miles closer than regional airports, for the most precise local forecasts.

Custer State Park, SD Weather Forecast and Current Conditions

Current Conditions From Nearby Station

Switch to Metric Units

41°F
Feels Like 34°F

Humidity 39% Dew Point 18°F Wind WSW 12 MPH Barometer 30.13 in.

Solar Rad 38 w/m² Visibility 10 mi.

Report from a NOAA weather station 9.2 mi. WNW of central Custer State Park
at 7:53 AM Sun, Dec 14, 2025

Point Forecast at a Glance

SunDec 14

MonDec 15

TueDec 16

WedDec 17

30%

ThuDec 18

FriDec 19

50%

SatDec 20

50%

Jump to detailed forecast ↓

7-Day Temperature Trend

Week Ahead Summary

High temperatures drop from 60°F to a low of 36°F, then recover to 41°F by week's end. Some precipitation possible, including both rain and snow.

Climate Context

This week's forecast shows temperatures running 13°F above the historical average for December. Normal highs for this period are around 38°F with lows around 14°F.

This Date in Weather History

1924 - The temperature at Helena, MT, plunged 79 degrees in 24 hours, and 88 degrees in 34 hours. The mercury plummeted from 63 above to 25 below zero. At Fairfield MT the temperature plunged 84 degrees in just 12 hours, from 63 at Noon to 21 below zero at midnight.

Custer State Park, SD 7 Day Weather Forecast Details

Sunday Dec 14

Day: Sunny, with a high near 60. West wind around 11 mph, with gusts as high as 26 mph.

Night: Mostly clear, with a low around 39. Northwest wind 8 to 13 mph, with gusts as high as 24 mph.

Monday Dec 15

Day: Sunny, with a high near 58. West wind 5 to 8 mph, with gusts as high as 21 mph.

Night: Mostly cloudy, with a steady temperature around 45. West wind 10 to 13 mph, with gusts as high as 25 mph.

Tuesday Dec 16

Day: Mostly sunny, with a temperature rising to near 55 by 11am, then falling to around 42 during the remainder of the day. West wind 7 to 11 mph, with gusts as high as 23 mph.

Night: Partly cloudy, with a low around 35. West wind 6 to 13 mph, with gusts as high as 28 mph.

Wednesday Dec 17

Day: A 30 percent chance of rain after 11am. Mostly sunny, with a high near 56. Southwest wind 15 to 18 mph, with gusts as high as 41 mph.

Night: A chance of snow before 11pm. Partly cloudy, with a low around 25. Blustery, with a northwest wind 18 to 21 mph, with gusts as high as 41 mph.

Thursday Dec 18

Day: Mostly sunny, with a high near 36.

Night: Mostly cloudy, with a low around 26.

Friday Dec 19

Day: A slight chance of rain. Partly sunny, with a high near 54.

Night: A slight chance of rain and snow. Mostly cloudy, with a low around 31.

Saturday Dec 20

Day: A slight chance of snow. Mostly sunny, with a high near 41.

How We Provide Better Local Weather

Current conditions: We use the nearest available station to your location - including professional MESONET/MADIS and local weather stations - often miles closer than regional airports.

Forecasts: National Weather Service point forecasts predict for your specific area, not broad regional zones, making them far more relevant to your location.

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