Gretna, SD Weather Forecast

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Gretna, SD Weather Forecast

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Gretna SD weather  - Clear - 67°F
Clear
67°F
Updated 8:53 pm
Feels Like 65°F
Humidity 67%
Wind SSE 5 mph
Barometer  29.81 in
Dew Point 56°F
Gretna SD weather  - Clear - 19°C
Clear
19°C
Updated 8:53 pm
Feels Like 18°C
Humidity 67%
Wind SSE 8 km/h
Barometer  100.9 kPa
Dew Point 13°C

Gretna Weather Forecast

TONIGHT TUESDAY TUESDAY NIGHT WEDNESDAY WEDNESDAY NIGHT THURSDAY FRIDAY FRIDAY NIGHT SATURDAY SUNDAY SUNDAY NIGHT COLUMBUS DAY
Gretna, SD Weather - Tonight Mostly Clear Gretna, SD Weather - Tuesday Mostly Sunny Gretna, SD Weather - Tuesday Night Partly Cloudy Gretna, SD Weather - Wednesday Partly Sunny Gretna, SD Weather - Wednesday Night Partly Cloudy Gretna, SD Weather - Thursday Partly Cloudy Gretna, SD Weather - Friday Partly Cloudy Gretna, SD Weather - Friday Night Partly Cloudy Gretna, SD Weather - Saturday Partly Cloudy Gretna, SD Weather - Sunday Mostly Cloudy Gretna, SD Weather - Sunday Night Chance Of Showers Gretna, SD Weather - Columbus Day Chance Of Showers
Mostly Clear Mostly Sunny Partly Cloudy Partly Sunny Partly Cloudy Partly Cloudy Partly Cloudy Partly Cloudy Partly Cloudy Mostly Cloudy Chance of Showers Chance of Showers
Lo: 51°FLo: 11°C Hi: 79°FHi: 26°C
Lo: 49°FLo: 9°C Hi: 71°FHi: 22°C
Lo: 49°FLo: 9°C Hi: 69°FHi: 21°C
Lo: 45°FLo: 7°C
Hi: 69°FHi: 21°C
Lo: 45°FLo: 7°C
Hi: 79°FHi: 26°C
Lo: 51°FLo: 11°C
Hi: 79°FHi: 26°C
Lo: 51°FLo: 11°C
Hi: 59°FHi: 15°C
Hi: 49°FHi: 9°C
Lo: 41°FLo: 5°C
Hi: 49°FHi: 9°C
Lo: 41°FLo: 5°C
POP: 40% POP: 40%
POP = Probability of Precipitation.
Weather Outlook Updated: 722 PM CDT Mon Oct 05 2026 Gretna, SD Weather - WeatherWorld.com

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Gretna Forecast Discussion

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Issued: 611 PM CDT Mon Oct 5 2026

Key Messages

  • Above normal temperatures and dry conditions expected through Saturday.
  • Signs of cooler temperatures moving in Sunday into Monday of next week, with highs dropping back into the 50s.

Discussion

... Issued at 152 PM CDT Mon Oct 5 2026

Warm front is moving northward across the region this afternoon, with temps rising through the 70s and southerly winds gusting from 20 to 35 mph for most areas east of the Missouri River. For tonight, southwesterly low-level jet at 925mb remains in place ov...