Johnstown, NE Weather & Growing Conditions
Today
68°F
Slight Chance Showers And Thunderstorms then Mostly Cloudy
A slight chance of showers and thunderstorms before noon. Mostly cloudy, with a high near 68. North northeast wind 5 to 10 mph. Chance of precipitation is 20%.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 68°F | Slight Chance Showers And Thunderstorms then Mostly Cloudy | 5 to 10 mph NNE | 24% |
| Tonight | 51°F | Partly Cloudy | 0 to 5 mph SE | 5% |
| Wednesday | 75°F | Mostly Sunny | 0 to 10 mph SSW | 8% |
| Wednesday Night | 56°F | Mostly Clear | 5 to 10 mph S | 0% |
| Thursday | 85°F | Sunny | 10 to 15 mph S | 5% |
| Thursday Night | 63°F | Mostly Clear | 10 to 15 mph S | 8% |
| Friday | 91°F | Sunny | 10 mph SSW | 6% |
| Friday Night | 65°F | Mostly Clear | 10 mph S | 9% |
| Saturday | 96°F | Sunny | 10 to 20 mph SSW | 3% |
| Saturday Night | 64°F | Mostly Clear | 5 to 15 mph SSE | 8% |
| Sunday | 94°F | Sunny | 5 to 15 mph SSE | 3% |
| Sunday Night | 67°F | Slight Chance Showers And Thunderstorms | 10 to 15 mph SE | 18% |
| Monday | 93°F | Slight Chance Rain Showers then Slight Chance Showers And Thunderstorms | 10 to 15 mph ESE | 17% |
| Monday Night | 65°F | Slight Chance Showers And Thunderstorms | 10 to 15 mph ENE | 21% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Johnstown, NE
Last spring frost
May 2
First fall frost
Oct 8
Growing season
158 days
Hardiness zone
5b
Explore more for Johnstown, NE: full frost dates · planting calendar · Nebraska frost dates
Climate data from the nearest NOAA station, Ainsworth, Ne (14.4 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.