Irena, MO Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Irena, a village in Worth County, Missouri.
Tonight
70°F
Partly Cloudy then Chance Showers And Thunderstorms
A chance of showers and thunderstorms after 3am. Partly cloudy, with a low around 70. South southwest wind around 8 mph. Chance of precipitation is 30%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast for Irena
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 70°F | Partly Cloudy then Chance Showers And Thunderstorms | 8 mph SSW | 27% |
| Saturday | 82°F | Chance Showers And Thunderstorms | 6 to 9 mph SW | 25% |
| Saturday Night | 63°F | Chance Showers And Thunderstorms then Showers And Thunderstorms Likely | 6 mph N | 60% |
| Sunday | 70°F | Chance Showers And Thunderstorms | 7 to 10 mph NNE | 49% |
| Sunday Night | 59°F | Chance Showers And Thunderstorms | 9 mph NE | 49% |
| Monday | 61°F | Chance Rain Showers | 10 mph NE | 52% |
| Monday Night | 53°F | Chance Rain Showers | 6 to 9 mph NE | 52% |
| Tuesday | 59°F | Mostly Cloudy | 8 mph NE | 8% |
| Tuesday Night | 48°F | Partly Cloudy | 3 to 7 mph NE | 4% |
| Wednesday | 63°F | Mostly Sunny | 5 mph ENE | 2% |
| Wednesday Night | 51°F | Partly Cloudy | 3 mph E | 6% |
| Thursday | 64°F | Slight Chance Rain Showers | 3 mph ESE | 18% |
| Thursday Night | 55°F | Mostly Cloudy then Slight Chance Rain Showers | 2 mph E | 18% |
| Friday | 66°F | Slight Chance Rain Showers | 2 to 6 mph ESE | 18% |
Forecast source: National Weather Service (api.weather.gov) for Irena (40.540, -94.390). Updated through the day.
Growing snapshot for Irena
Last spring frost
Apr 24
First fall frost
Oct 14
Growing season
172 days
Hardiness zone
5b
More local growing data for Irena: nearby ZIP 64456 weather · frost dates · planting calendar · Missouri frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Grant City, Mo (1.3 mi from Irena). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.