Johnstown, NE Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Johnstown, a village in Brown County, Nebraska.
This Afternoon
81°F
Partly Sunny
Partly sunny, with a high near 81. North northwest wind around 5 mph.
7-day forecast for Johnstown
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 81°F | Partly Sunny | 5 mph NNW | 0% |
| Tonight | 59°F | Mostly Cloudy | 5 mph N | 13% |
| Saturday | 67°F | Cloudy | 5 to 10 mph NNE | 11% |
| Saturday Night | 55°F | Rain Showers Likely | 5 to 10 mph NE | 72% |
| Sunday | 61°F | Rain Showers | 5 to 10 mph ENE | 75% |
| Sunday Night | 51°F | Showers And Thunderstorms | 5 to 10 mph ENE | 88% |
| Monday | 62°F | Rain Showers | 5 to 10 mph NE | 77% |
| Monday Night | 48°F | Chance Rain Showers | 5 to 10 mph ESE | 32% |
| Tuesday | 65°F | Mostly Cloudy | 5 to 15 mph SSE | 14% |
| Tuesday Night | 53°F | Mostly Cloudy then Slight Chance Rain Showers | 10 to 15 mph SSE | 20% |
| Wednesday | 70°F | Chance Rain Showers | 15 to 20 mph S | 28% |
| Wednesday Night | 55°F | Chance Showers And Thunderstorms | 10 to 15 mph S | 37% |
| Thursday | 73°F | Chance Rain Showers then Partly Sunny | 5 to 10 mph S | 33% |
| Thursday Night | 56°F | Mostly Cloudy | 5 to 10 mph SSE | 13% |
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 Sep 18, 2026.