Junction City, MO Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Junction City, a village in Madison County, Missouri.
Today
88°F
Sunny
Sunny, with a high near 88. Southeast wind 0 to 3 mph.
7-day forecast for Junction City
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 88°F | Sunny | 0 to 3 mph SE | 0% |
| Tonight | 65°F | Mostly Clear | 0 to 3 mph SE | 0% |
| Wednesday | 90°F | Sunny | 0 to 3 mph S | 2% |
| Wednesday Night | 69°F | Partly Cloudy then Slight Chance Showers And Thunderstorms | 5 mph S | 22% |
| Thursday | 88°F | Chance Showers And Thunderstorms | 2 to 6 mph S | 45% |
| Thursday Night | 70°F | Chance Showers And Thunderstorms | 0 to 5 mph S | 56% |
| Friday | 88°F | Showers And Thunderstorms Likely then Chance Showers And Thunderstorms | 1 to 5 mph SW | 56% |
| Friday Night | 69°F | Chance Showers And Thunderstorms | 0 to 3 mph SW | 42% |
| Saturday | 88°F | Chance Showers And Thunderstorms | 1 to 5 mph S | 27% |
| Saturday Night | 70°F | Slight Chance Showers And Thunderstorms then Partly Cloudy | 1 to 5 mph S | 17% |
| Sunday | 90°F | Sunny | 2 to 8 mph S | 4% |
| Sunday Night | 71°F | Mostly Clear | 3 to 8 mph S | 2% |
| Monday | 91°F | Sunny | 3 to 8 mph SW | 3% |
| Monday Night | 72°F | Mostly Clear | 3 to 7 mph S | 4% |
Forecast source: National Weather Service (api.weather.gov) for Junction City (37.574, -90.293). Updated through the day.
Growing snapshot for Junction City
Last spring frost
Apr 21
First fall frost
Oct 16
Growing season
174 days
Hardiness zone
6b
More local growing data for Junction City: nearby ZIP 63645 weather · frost dates · planting calendar · Missouri frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Fredericktown, Mo (2.4 mi from Junction City). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.