Sigourney, IA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Sigourney, a city in Keokuk County, Iowa.
Today
82°F
Chance Rain Showers
A chance of rain showers before 1pm, then a chance of showers and thunderstorms between 1pm and 4pm, then a chance of showers and thunderstorms. Mostly cloudy, with a high near 82. Southwest wind 5 to 10 mph. Chance of precipitation is 30%.
7-day forecast for Sigourney
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 82°F | Chance Rain Showers | 5 to 10 mph SW | 33% |
| Tonight | 63°F | Chance Showers And Thunderstorms then Showers And Thunderstorms | 5 to 10 mph NW | 82% |
| Sunday | 68°F | Showers And Thunderstorms | 10 to 15 mph NE | 78% |
| Sunday Night | 57°F | Showers And Thunderstorms Likely | 10 to 15 mph NE | 60% |
| Monday | 62°F | Rain Showers Likely | 15 mph NE | 60% |
| Monday Night | 51°F | Chance Rain Showers | 10 to 15 mph NE | 47% |
| Tuesday | 60°F | Chance Rain Showers then Partly Sunny | 10 mph NE | 39% |
| Tuesday Night | 46°F | Partly Cloudy | 5 to 10 mph NE | 4% |
| Wednesday | 65°F | Sunny | 5 mph NE | 1% |
| Wednesday Night | 51°F | Partly Cloudy | 0 to 5 mph NE | 2% |
| Thursday | 67°F | Partly Sunny | 5 mph E | 7% |
| Thursday Night | 54°F | Partly Cloudy | 0 to 5 mph E | 6% |
| Friday | 69°F | Partly Sunny | 5 mph E | 6% |
| Friday Night | 55°F | Partly Cloudy | 5 mph E | 8% |
Forecast source: National Weather Service (api.weather.gov) for Sigourney (41.334, -92.204). Updated through the day.
Growing snapshot for Sigourney
Last spring frost
Apr 24
First fall frost
Oct 15
Growing season
172 days
Hardiness zone
5b
More local growing data for Sigourney: nearby ZIP 52591 weather · frost dates · planting calendar · Iowa frost dates
Nearby towns & communities
Delta
Gibson
Harper
Hayesville
Hedrick
Keswick
Kinross
Martinsburg
Ollie
Richland
South English
Thornburg
Webster
What Cheer
Climate data from the nearest NOAA station, Sigourney, Ia (2.4 mi from Sigourney). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.