Chelsea, IA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Chelsea, a city in Tama County, Iowa.
Overnight
66°F
Chance Showers And Thunderstorms
A chance of showers and thunderstorms. Mostly cloudy. Low around 66, with temperatures rising to around 68 overnight. Southeast wind around 7 mph. Chance of precipitation is 50%. New rainfall amounts between a quarter and half of an inch possible.
7-day forecast for Chelsea
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 66°F | Chance Showers And Thunderstorms | 7 mph SE | 49% |
| Saturday | 81°F | Showers And Thunderstorms Likely | 8 mph SSW | 66% |
| Saturday Night | 61°F | Chance Showers And Thunderstorms | 8 mph N | 46% |
| Sunday | 67°F | Chance Rain Showers | 8 to 12 mph NE | 48% |
| Sunday Night | 55°F | Chance Rain Showers | 12 mph NE | 46% |
| Monday | 63°F | Chance Rain Showers | 12 mph NE | 46% |
| Monday Night | 49°F | Chance Rain Showers | 6 to 10 mph NE | 43% |
| Tuesday | 61°F | Chance Rain Showers then Partly Sunny | 8 mph ENE | 28% |
| Tuesday Night | 45°F | Mostly Clear | 2 to 7 mph NE | 4% |
| Wednesday | 66°F | Sunny | 6 mph NE | 0% |
| Wednesday Night | 49°F | Partly Cloudy | 3 mph ENE | 2% |
| Thursday | 66°F | Partly Sunny | 5 mph E | 8% |
| Thursday Night | 53°F | Partly Cloudy | 2 mph E | 7% |
| Friday | 69°F | Partly Sunny | 5 mph E | 6% |
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 Sep 19, 2026.