Lacona, IA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Lacona, a city in Warren County, Iowa.
Today
87°F
Partly Sunny then Chance Showers And Thunderstorms
A chance of showers and thunderstorms after 2pm. Partly sunny. High near 87, with temperatures falling to around 85 in the afternoon. West wind around 8 mph. Chance of precipitation is 30%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast for Lacona
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 87°F | Partly Sunny then Chance Showers And Thunderstorms | 8 mph W | 32% |
| Tonight | 64°F | Showers And Thunderstorms | 6 to 10 mph NNE | 87% |
| Wednesday | 74°F | Showers And Thunderstorms Likely then Showers And Thunderstorms | 8 mph NE | 83% |
| Wednesday Night | 59°F | Chance Showers And Thunderstorms | 2 to 7 mph NE | 53% |
| Thursday | 81°F | Slight Chance Rain Showers then Mostly Sunny | 5 mph NE | 15% |
| Thursday Night | 62°F | Mostly Clear | 3 mph ESE | 5% |
| Friday | 86°F | Sunny | 2 to 6 mph S | 7% |
| Friday Night | 67°F | Mostly Clear | 6 mph S | 12% |
| Saturday | 90°F | Sunny | 5 to 10 mph SSW | 7% |
| Saturday Night | 73°F | Mostly Clear | 9 to 13 mph SSW | 11% |
| Sunday | 91°F | Mostly Sunny | 14 mph SSW | 11% |
| Sunday Night | 72°F | Slight Chance Showers And Thunderstorms | 13 mph S | 23% |
| Monday | 92°F | Slight Chance Showers And Thunderstorms then Mostly Sunny | 12 to 16 mph SSW | 23% |
| Monday Night | 72°F | Chance Showers And Thunderstorms | 12 to 15 mph S | 26% |
Forecast source: National Weather Service (api.weather.gov) for Lacona (41.190, -93.385). Updated through the day.
Growing snapshot for Lacona
Last spring frost
May 5
First fall frost
Oct 5
Growing season
151 days
Hardiness zone
5b
More local growing data for Lacona: nearby ZIP 50139 weather · frost dates · planting calendar · Iowa frost dates
Nearby towns & communities
Ackworth
Carlisle
Hartford
Indianola
Martensdale
Milo
New Virginia
Norwalk
Sandyville
Spring Hill
St. Marys
Climate data from the nearest NOAA station, Chariton 1 E, Ia (13 mi from Lacona). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.