Gretna, SD Weather Forecast and Current Conditions

Current Conditions

31°F
Feels Like 31°F  
Humidity 75% Dew Point 24°F Wind Calm Barometer 34.39 in.
Report from a MADIS/MESONET weather station 17.3 mi. ESE of central Gretna
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Point Forecast at a Glance

MonDec 15
Mon Dec 15: Mostly Cloudy, Low 27F
 
27
TueDec 16
Tue Dec 16: Partly Sunny, High 43F, Low 24F
43
24
WedDec 17
Wed Dec 17: Rain, High 43F, Low 8F
20%
43
8
ThuDec 18
Thu Dec 18: Mostly Sunny, High 12F, Low 1F
12
1
FriDec 19
Fri Dec 19: Mostly Cloudy, High 35F, Low 16F
35
16
SatDec 20
Sat Dec 20: Mostly Sunny, High 25F, Low 11F
25
11
SunDec 21
Sun Dec 21: Mostly Sunny, High 31F, Low 12F
31
12

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7-Day Temperature Trend

Week Ahead Summary

High temperatures drop from 43°F to a low of 12°F, then recover to 31°F by week's end. Mostly dry conditions with only one day showing wintry mix chances.

Climate Context

This week's forecast shows temperatures running 4°F above the historical average for December. Normal highs for this period are around 27°F with lows around 9°F.

This Date in Weather History

1839 - The first of triple storms hit Massachusetts Bay. The storm produced whole gales, and more than 20 inches of snow in interior New England. There was great loss of life at Gloucester MA.

More on this and other weather history

Gretna, SD 7 Day Weather Forecast Details

Monday Dec 15

Mostly Cloudy

Night: Mostly cloudy, with a temperature falling to near 27 by 10pm, then rising to around 35 during the remainder of the night. West southwest wind 8 to 17 mph, with gusts as high as 28 mph.

Tuesday Dec 16

Partly Sunny

Day: Partly sunny, then gradually becoming sunny, with a high near 43. Breezy, with a west northwest wind 15 to 20 mph increasing to 23 to 28 mph in the afternoon. Winds could gust as high as 40 mph.

Partly Cloudy

Night: Partly cloudy, with a low around 24. Blustery, with a west northwest wind 10 to 20 mph becoming south southwest after midnight. Winds could gust as high as 29 mph.

Wednesday Dec 17

Rain

Day: A slight chance of rain after noon. Partly sunny, with a high near 43. Breezy, with a south wind 16 to 23 mph, with gusts as high as 31 mph. Chance of precipitation is 20%.

Rain And Snow

Night: A chance of rain before 9pm, then a chance of rain and snow between 9pm and midnight, then a chance of snow after midnight. Mostly cloudy, with a low around 8. Very windy, with a west wind 24 to 29 mph increasing to 35 to 40 mph after midnight. Winds could gust as high as 55 mph. Chance of precipitation is 30%.

Thursday Dec 18

Mostly Sunny

Day: Mostly sunny, with a high near 12. Windy, with a north northwest wind 29 to 39 mph decreasing to 13 to 23 mph. Winds could gust as high as 55 mph.

Mostly Cloudy

Night: Mostly cloudy, with a low around 1. Breezy, with a north northwest wind 9 to 14 mph becoming southeast 16 to 21 mph after midnight.

Friday Dec 19

Mostly Cloudy

Day: Mostly cloudy, with a high near 35. Breezy, with a southeast wind 14 to 21 mph becoming south southwest in the afternoon.

Mostly Cloudy

Night: Mostly cloudy, with a low around 16. Southwest wind around 14 mph becoming north northwest after midnight.

Saturday Dec 20

Mostly Sunny

Day: Mostly sunny, with a high near 25.

Mostly Cloudy

Night: Mostly cloudy, with a low around 11.

Sunday Dec 21

Mostly Sunny

Day: Mostly sunny, with a high near 31.

Mostly Cloudy

Night: Mostly cloudy, with a low around 12.

Monday Dec 22

Snow

Day: A slight chance of snow. Partly sunny, with a high near 28. Chance of precipitation is 20%.

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.