Harman US

St. Helena, NE Weather & Growing Conditions

Tonight
63°F
Mostly Cloudy then Slight Chance Showers And Thunderstorms
A slight chance of showers and thunderstorms after 3am. Mostly cloudy. Low around 63, with temperatures rising to around 65 overnight. North northwest wind around 9 mph. Chance of precipitation is 20%.

7-day forecast

WhenTempForecastWindPrecip
Tonight 63°F Mostly Cloudy then Slight Chance Showers And Thunderstorms 9 mph NNW 20%
Saturday 69°F Slight Chance Rain Showers then Cloudy 12 mph NNW 21%
Saturday Night 59°F Cloudy then Slight Chance Rain Showers 12 mph NNE 16%
Sunday 64°F Rain Showers Likely 13 mph NE 59%
Sunday Night 55°F Showers And Thunderstorms 10 mph ENE 83%
Monday 60°F Showers And Thunderstorms Likely 12 mph ENE 83%
Monday Night 50°F Chance Showers And Thunderstorms then Mostly Cloudy 5 to 9 mph ENE 40%
Tuesday 64°F Mostly Cloudy 5 to 10 mph E 6%
Tuesday Night 51°F Mostly Cloudy 9 mph SE 3%
Wednesday 68°F Partly Sunny 8 to 13 mph SSE 14%
Wednesday Night 55°F Chance Rain Showers 9 mph SE 47%
Thursday 68°F Chance Rain Showers 8 to 12 mph SSE 47%
Thursday Night 57°F Mostly Cloudy then Slight Chance Rain Showers 8 mph SE 18%
Friday 70°F Slight Chance Rain Showers 7 to 12 mph SE 18%

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 Sep 19, 2026.