Johnstown, NE Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Johnstown, a village in Brown County, Nebraska.
This Afternoon
45°F
Mostly Cloudy
Mostly cloudy, with a high near 45. North northwest wind 15 to 20 mph, with gusts as high as 30 mph.
7-day forecast for Johnstown
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 45°F | Mostly Cloudy | 15 to 20 mph NNW | 0% |
| Tonight | 31°F | Mostly Cloudy | 10 to 15 mph NW | 1% |
| Wednesday | 48°F | Partly Sunny | 15 mph NW | 4% |
| Wednesday Night | 34°F | Mostly Cloudy | 10 to 15 mph NW | 11% |
| Thursday | 51°F | Mostly Sunny | 5 to 10 mph NNW | 2% |
| Thursday Night | 28°F | Mostly Clear | 0 to 5 mph N | 0% |
| Friday | 55°F | Mostly Sunny | 0 to 5 mph SW | 0% |
| Friday Night | 32°F | Partly Cloudy | 5 mph SW | 0% |
| Saturday | 62°F | Sunny | 5 to 10 mph W | 4% |
| Saturday Night | 35°F | Mostly Clear | 5 mph W | 1% |
| Sunday | 65°F | Sunny | 5 to 10 mph SW | 0% |
| Sunday Night | 42°F | Clear | 10 mph SW | 0% |
| Monday | 63°F | Sunny | 5 to 15 mph NW | 0% |
| Monday Night | 38°F | Partly Cloudy | 5 mph WNW | 0% |
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 Nov 4, 2026.