Chelsea, IA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Chelsea, a city in Tama County, Iowa.
Today
84°F
Chance Showers And Thunderstorms
A chance of showers and thunderstorms after 8am. Partly sunny. High near 84, with temperatures falling to around 81 in the afternoon. West wind around 7 mph. Chance of precipitation is 30%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast for Chelsea
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 84°F | Chance Showers And Thunderstorms | 7 mph W | 27% |
| Tonight | 61°F | Showers And Thunderstorms | 8 mph N | 86% |
| Wednesday | 75°F | Showers And Thunderstorms Likely | 6 mph NNE | 73% |
| Wednesday Night | 55°F | Chance Rain Showers | 3 mph NNE | 39% |
| Thursday | 81°F | Sunny | 2 mph ENE | 4% |
| Thursday Night | 58°F | Mostly Clear | 2 mph E | 0% |
| Friday | 84°F | Sunny | 0 to 6 mph SSE | 4% |
| Friday Night | 64°F | Mostly Clear | 5 mph SSE | 13% |
| Saturday | 88°F | Sunny | 2 to 7 mph S | 9% |
| Saturday Night | 69°F | Mostly Clear then Slight Chance Showers And Thunderstorms | 8 mph S | 16% |
| Sunday | 89°F | Slight Chance Showers And Thunderstorms then Mostly Sunny | 9 mph S | 16% |
| Sunday Night | 68°F | Chance Showers And Thunderstorms | 8 mph SSE | 35% |
| Monday | 88°F | Chance Showers And Thunderstorms | 6 to 10 mph S | 35% |
| Monday Night | 69°F | Chance Showers And Thunderstorms | 10 mph ESE | 31% |
Forecast source: National Weather Service (api.weather.gov) for Chelsea (41.920, -92.394). Updated through the day.
Growing snapshot for Chelsea
Last spring frost
Apr 28
First fall frost
Oct 10
Growing season
165 days
Hardiness zone
5a
More local growing data for Chelsea: nearby ZIP 52215 weather · frost dates · planting calendar · Iowa frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Belle Plaine, Ia (7 mi from Chelsea). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.