St. Helena, NE Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for St. Helena, a village in Cedar County, Nebraska.
Today
72°F
Patchy Smoke
Patchy smoke and showers and thunderstorms likely before 1pm, then patchy smoke and showers and thunderstorms. Mostly cloudy. High near 72, with temperatures falling to around 70 in the afternoon. North northwest wind 6 to 13 mph, with gusts as high as 21 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch possible.
7-day forecast for St. Helena
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 72°F | Patchy Smoke | 6 to 13 mph NNW | 80% |
| Tonight | 54°F | Chance Rain Showers then Patchy Smoke | 5 mph W | 27% |
| Wednesday | 77°F | Mostly Sunny | 1 to 5 mph SE | 2% |
| Wednesday Night | 55°F | Mostly Clear | 6 mph SSE | 0% |
| Thursday | 84°F | Sunny | 6 to 13 mph S | 0% |
| Thursday Night | 64°F | Mostly Clear | 7 to 12 mph S | 5% |
| Friday | 89°F | Sunny | 6 to 12 mph SSW | 5% |
| Friday Night | 66°F | Mostly Clear | 6 to 9 mph S | 11% |
| Saturday | 93°F | Sunny | 6 to 16 mph S | 4% |
| Saturday Night | 69°F | Slight Chance Showers And Thunderstorms | 8 to 18 mph SSE | 15% |
| Sunday | 92°F | Mostly Sunny | 8 to 13 mph SE | 12% |
| Sunday Night | 70°F | Partly Cloudy then Slight Chance Showers And Thunderstorms | 10 to 15 mph ESE | 16% |
| Monday | 91°F | Slight Chance Showers And Thunderstorms then Mostly Sunny | 10 to 15 mph E | 16% |
| Monday Night | 68°F | Slight Chance Showers And Thunderstorms | 12 to 15 mph ENE | 22% |
Forecast source: National Weather Service (api.weather.gov) for St. Helena (42.811, -97.249). Updated through the day.
Growing snapshot for St. Helena
Last spring frost
Apr 27
First fall frost
Oct 11
Growing season
164 days
Hardiness zone
5a
More local growing data for St. Helena: nearby ZIP 68774 weather · frost dates · planting calendar · Nebraska frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Yankton 2 E, Sd (6.4 mi from St. Helena). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.