Frankfort, SD Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Frankfort, a city in Spink County, South Dakota.
This Afternoon
65°F
Areas Of Drizzle
Areas of drizzle and patchy fog. Cloudy, with a high near 65. East northeast wind around 9 mph. Chance of precipitation is 40%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast for Frankfort
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 65°F | Areas Of Drizzle | 9 mph ENE | 35% |
| Tonight | 56°F | Areas Of Drizzle | 9 mph NE | 26% |
| Saturday | 68°F | Patchy Fog | 9 to 13 mph NNE | 3% |
| Saturday Night | 52°F | Mostly Cloudy | 7 to 13 mph NE | 12% |
| Sunday | 66°F | Mostly Cloudy then Chance Rain Showers | 9 to 14 mph ENE | 32% |
| Sunday Night | 50°F | Rain Showers Likely | 7 to 12 mph ENE | 58% |
| Monday | 63°F | Rain Showers Likely | 9 mph E | 58% |
| Monday Night | 46°F | Mostly Cloudy | 8 mph ESE | 9% |
| Tuesday | 67°F | Partly Sunny | 7 to 14 mph SE | 3% |
| Tuesday Night | 50°F | Partly Cloudy | 10 to 14 mph SSE | 12% |
| Wednesday | 69°F | Slight Chance Rain Showers | 15 to 20 mph SSE | 17% |
| Wednesday Night | 53°F | Chance Rain Showers | 12 to 15 mph SSE | 31% |
| Thursday | 71°F | Chance Rain Showers then Partly Sunny | 9 to 13 mph SSE | 31% |
| Thursday Night | 53°F | Partly Cloudy then Slight Chance Rain Showers | 9 mph SE | 15% |
Forecast source: National Weather Service (api.weather.gov) for Frankfort (44.878, -98.309). Updated through the day.
Growing snapshot for Frankfort
Last spring frost
May 8
First fall frost
Oct 1
Growing season
145 days
Hardiness zone
4b
More local growing data for Frankfort: nearby ZIP 57440 weather · frost dates · planting calendar · South Dakota frost dates
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Climate data from the nearest NOAA station, Redfield, Sd (13.2 mi from Frankfort). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.