Lake Byron, SD Weather Forecast and Current Conditions

Current Conditions From Nearby Station

Clear 29°F
Feels Like 22°F  
Humidity 89% Dew Point 26°F Wind S 7 MPH Barometer 29.88 in.
Visibility 10 mi.
Report from a NOAA weather station 13.5 mi. SSW of central Lake Byron
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Point Forecast at a Glance

MonDec 15
Mon Dec 15: Mostly Cloudy, Low 23F
 
23
TueDec 16
Tue Dec 16: Partly Sunny, High 42F, Low 22F
42
22
WedDec 17
Wed Dec 17: Partly Sunny, High 43F, Low 16F
43
16
ThuDec 18
Thu Dec 18: Snow, High 20F, Low 1F
20%
20
1
FriDec 19
Fri Dec 19: Mostly Cloudy, High 34F, Low 19F
34
19
SatDec 20
Sat Dec 20: Partly Sunny, High 29F, Low 14F
29
14
SunDec 21
Sun Dec 21: Rain And Snow, High 33F, Low 19F
20%
33
19

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7-Day Temperature Trend

Week Ahead Summary

High temperatures start near 42°F, reaching 43°F before cooling to 20°F, then recovering to 33°F by week's end. Some precipitation possible with wintry mix on at least one day.

Climate Context

This week's forecast shows temperatures running 4°F above the historical average for December. Normal highs for this period are around 29°F with lows around 10°F.

This Date in Weather History

1901 - An intense cold front swept across the eastern U.S. The cold front produced heavy rain in Louisiana, and heavy snow in the northeastern U.S.

More on this and other weather history

Lake Byron, SD 7 Day Weather Forecast Details

Monday Dec 15

Mostly Cloudy

Night: Mostly cloudy, with a low around 23. South southeast wind 5 to 10 mph.

Tuesday Dec 16

Partly Sunny

Day: Partly sunny, with a high near 42. South wind 5 to 15 mph becoming west northwest in the afternoon. Winds could gust as high as 25 mph.

Partly Cloudy

Night: Partly cloudy, with a low around 22. West northwest wind 5 to 15 mph becoming south after midnight. Winds could gust as high as 20 mph.

Wednesday Dec 17

Partly Sunny

Day: Partly sunny, with a high near 43. Breezy, with a south wind 10 to 15 mph increasing to 20 to 25 mph in the afternoon. Winds could gust as high as 40 mph.

Rain And Snow

Night: Rain likely before midnight, then a chance of rain and snow between midnight and 3am, then a chance of snow after 3am. Mostly cloudy, with a low around 16. Windy, with a southwest wind 15 to 25 mph becoming west northwest 25 to 35 mph in the evening. Winds could gust as high as 50 mph. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.

Thursday Dec 18

Snow

Day: A 20 percent chance of snow before noon. Mostly sunny, with a high near 20. Windy, with a north northwest wind 25 to 35 mph decreasing to 15 to 25 mph in the afternoon. Winds could gust as high as 50 mph.

Partly Cloudy

Night: Partly cloudy, with a low around 1.

Friday Dec 19

Mostly Cloudy

Day: Mostly cloudy, with a high near 34. Breezy.

Mostly Cloudy

Night: Mostly cloudy, with a low around 19.

Saturday Dec 20

Partly Sunny

Day: Partly sunny, with a high near 29.

Partly Cloudy

Night: Partly cloudy, with a low around 14.

Sunday Dec 21

Rain And Snow

Day: A slight chance of rain and snow. Mostly sunny, with a high near 33. Chance of precipitation is 20%.

Mostly Cloudy

Night: Mostly cloudy, with a low around 19.

Monday Dec 22

Snow

Day: A 20 percent chance of snow. Partly sunny, with a high near 32.

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.