Doon, IA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Doon, a city in Lyon County, Iowa.
Tonight
39°F
Rain Showers
Rain showers. Cloudy. Low around 39, with temperatures rising to around 42 overnight. North northwest wind around 15 mph, with gusts as high as 30 mph. Chance of precipitation is 100%. New rainfall amounts between a tenth and quarter of an inch possible.
7-day forecast for Doon
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 39°F | Rain Showers | 15 mph NNW | 100% |
| Wednesday | 47°F | Rain Showers | 15 mph NW | 86% |
| Wednesday Night | 37°F | Rain Showers Likely | 10 mph NW | 61% |
| Thursday | 47°F | Slight Chance Rain Showers then Mostly Cloudy | 10 mph NNW | 17% |
| Thursday Night | 32°F | Mostly Cloudy | 0 to 5 mph N | 0% |
| Friday | 48°F | Partly Sunny | 0 mph | 0% |
| Friday Night | 31°F | Mostly Cloudy | 0 mph | 1% |
| Saturday | 55°F | Mostly Sunny | 0 to 5 mph WSW | 2% |
| Saturday Night | 34°F | Mostly Clear | 0 to 5 mph WNW | 5% |
| Sunday | 58°F | Sunny | 0 to 5 mph WSW | 3% |
| Sunday Night | 38°F | Mostly Clear | 5 mph S | 1% |
| Monday | 61°F | Sunny | 5 to 10 mph WSW | 0% |
| Monday Night | 38°F | Mostly Clear | 0 to 5 mph NW | 0% |
| Tuesday | 58°F | Mostly Sunny | 0 to 5 mph WSW | 1% |
Forecast source: National Weather Service (api.weather.gov) for Doon (43.279, -96.233). Updated through the day.
Growing snapshot for Doon
Last spring frost
May 1
First fall frost
Oct 4
Growing season
156 days
Hardiness zone
5a
More local growing data for Doon: nearby ZIP 51235 weather · frost dates · planting calendar · Iowa frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Rock Rapids, Ia (9.6 mi from Doon). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.