Johnstown, NE Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Johnstown, a village in Brown County, Nebraska.
Today
69°F
Slight Chance Rain Showers
A slight chance of rain showers before 1pm. Mostly cloudy, with a high near 69. North northeast wind 5 to 10 mph. Chance of precipitation is 20%.
7-day forecast for Johnstown
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 69°F | Slight Chance Rain Showers | 5 to 10 mph NNE | 24% |
| Tonight | 51°F | Partly Cloudy | 0 to 5 mph SSE | 4% |
| Wednesday | 76°F | Mostly Sunny | 0 to 10 mph SSW | 6% |
| Wednesday Night | 56°F | Mostly Clear | 5 to 10 mph S | 0% |
| Thursday | 86°F | Sunny | 10 to 15 mph S | 5% |
| Thursday Night | 63°F | Mostly Clear | 10 to 15 mph S | 9% |
| Friday | 92°F | Sunny | 10 mph S | 5% |
| Friday Night | 65°F | Mostly Clear | 10 mph SSE | 8% |
| Saturday | 96°F | Sunny | 10 to 20 mph SSW | 3% |
| Saturday Night | 65°F | Mostly Clear | 5 to 15 mph S | 6% |
| Sunday | 94°F | Sunny | 5 to 15 mph SE | 2% |
| Sunday Night | 67°F | Slight Chance Showers And Thunderstorms | 10 to 15 mph SE | 19% |
| 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 | 5 to 15 mph ENE | 21% |
Forecast source: National Weather Service (api.weather.gov) for Johnstown (42.572, -100.056). Updated through the day.
Growing snapshot for Johnstown
Last spring frost
May 2
First fall frost
Oct 8
Growing season
158 days
Hardiness zone
5b
More local growing data for Johnstown: nearby ZIP 69214 weather · frost dates · planting calendar · Nebraska frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Ainsworth, Ne (14.4 mi from Johnstown). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.