Irena, MO Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Irena, a village in Worth County, Missouri.
This Afternoon
67°F
Showers And Thunderstorms
Showers and thunderstorms. Mostly cloudy. High near 67, with temperatures falling to around 58 in the afternoon. South southwest wind around 10 mph, with gusts as high as 18 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.
7-day forecast for Irena
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 67°F | Showers And Thunderstorms | 10 mph SSW | 88% |
| Tonight | 45°F | Chance Rain Showers then Cloudy | 13 mph NW | 69% |
| Wednesday | 55°F | Slight Chance Rain Showers then Mostly Cloudy | 10 to 14 mph W | 9% |
| Wednesday Night | 42°F | Partly Cloudy | 8 mph W | 2% |
| Thursday | 54°F | Partly Sunny then Slight Chance Rain Showers | 9 mph WNW | 24% |
| Thursday Night | 41°F | Mostly Cloudy | 6 mph NNW | 4% |
| Friday | 53°F | Partly Sunny | 3 to 7 mph N | 4% |
| Friday Night | 38°F | Mostly Cloudy | 2 mph NNW | 1% |
| Saturday | 56°F | Partly Sunny | 1 to 5 mph W | 1% |
| Saturday Night | 39°F | Partly Cloudy | 3 mph W | 3% |
| Sunday | 58°F | Mostly Sunny | 3 to 8 mph WNW | 5% |
| Sunday Night | 37°F | Mostly Clear | 3 mph WSW | 1% |
| Monday | 63°F | Sunny | 2 to 6 mph SSW | 2% |
| Monday Night | 42°F | Mostly Clear | 3 mph W | 2% |
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 Nov 3, 2026.