Forest City, IA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Forest City, a city in Winnebago County, Iowa.
Overnight
61°F
Patchy Fog
Patchy fog and showers and thunderstorms likely before 4am, then patchy fog and a chance of showers and thunderstorms. Cloudy. Low around 61, with temperatures rising to around 65 overnight. Southeast wind around 8 mph. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.
7-day forecast for Forest City
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 61°F | Patchy Fog | 8 mph SE | 64% |
| Saturday | 70°F | Patchy Fog | 5 to 8 mph N | 47% |
| Saturday Night | 55°F | Slight Chance Rain Showers then Cloudy | 8 to 12 mph NNE | 23% |
| Sunday | 65°F | Mostly Cloudy | 14 mph NE | 14% |
| Sunday Night | 50°F | Cloudy then Chance Rain Showers | 8 to 12 mph ENE | 27% |
| Monday | 60°F | Chance Rain Showers | 12 mph ENE | 49% |
| Monday Night | 45°F | Chance Rain Showers | 5 to 8 mph ENE | 48% |
| Tuesday | 60°F | Partly Sunny | 5 to 8 mph E | 11% |
| Tuesday Night | 43°F | Partly Cloudy | 2 to 6 mph E | 1% |
| Wednesday | 64°F | Sunny | 5 mph ESE | 0% |
| Wednesday Night | 47°F | Partly Cloudy | 2 mph SE | 6% |
| Thursday | 66°F | Slight Chance Rain Showers | 3 mph SSE | 17% |
| Thursday Night | 50°F | Partly Cloudy | 2 mph SSE | 7% |
| Friday | 67°F | Mostly Sunny | 1 to 6 mph SE | 8% |
Forecast source: National Weather Service (api.weather.gov) for Forest City (43.257, -93.637). Updated through the day.
Growing snapshot for Forest City
Last spring frost
Apr 30
First fall frost
Oct 7
Growing season
159 days
Hardiness zone
5a
More local growing data for Forest City: nearby ZIP 50436 weather · frost dates · planting calendar · Iowa frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Forest City 2 Nne, Ia (3.3 mi from Forest City). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.