St. Helena, NE Weather & Growing Conditions
Today
72°F
Patchy Smoke
Patchy smoke and showers and thunderstorms likely before 1pm, then patchy smoke and a chance of showers and thunderstorms between 1pm and 3pm, then patchy smoke and showers and thunderstorms likely. Mostly cloudy. High near 72, with temperatures falling to around 70 in the afternoon. North northwest wind 7 to 13 mph, with gusts as high as 21 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 72°F | Patchy Smoke | 7 to 13 mph NNW | 56% |
| Tonight | 54°F | Patchy Smoke | 2 to 6 mph W | 22% |
| Wednesday | 77°F | Mostly Sunny | 5 mph SE | 3% |
| Wednesday Night | 56°F | Mostly Clear | 7 mph SSE | 0% |
| Thursday | 83°F | Sunny | 6 to 14 mph S | 1% |
| Thursday Night | 65°F | Mostly Clear | 8 to 13 mph S | 5% |
| Friday | 89°F | Sunny | 7 to 13 mph SSW | 5% |
| Friday Night | 67°F | Mostly Clear | 6 to 10 mph S | 11% |
| Saturday | 92°F | Sunny | 6 to 17 mph S | 4% |
| Saturday Night | 69°F | Slight Chance Showers And Thunderstorms | 9 to 18 mph SSE | 15% |
| Sunday | 91°F | Mostly Sunny | 9 to 13 mph SE | 11% |
| Sunday Night | 70°F | Partly Cloudy then Slight Chance Showers And Thunderstorms | 12 to 15 mph ESE | 17% |
| Monday | 90°F | Slight Chance Showers And Thunderstorms then Mostly Sunny | 12 to 15 mph E | 17% |
| Monday Night | 69°F | Slight Chance Showers And Thunderstorms | 12 to 15 mph ENE | 22% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for St. Helena, NE
Last spring frost
Apr 27
First fall frost
Oct 11
Growing season
164 days
Hardiness zone
5a
Explore more for St. Helena, NE: full frost dates · planting calendar · Nebraska frost dates
Climate data from the nearest NOAA station, Yankton 2 E, Sd (6.4 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.