Letts, IA Weather & Growing Conditions
Today
54°F
Slight Chance Rain Showers then Mostly Cloudy
A slight chance of rain showers between 7am and 9am. Mostly cloudy, with a high near 54. Southwest wind around 15 mph, with gusts as high as 25 mph. Chance of precipitation is 20%.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 54°F | Slight Chance Rain Showers then Mostly Cloudy | 15 mph SW | 22% |
| Tonight | 46°F | Mostly Cloudy | 10 to 15 mph W | 10% |
| Thursday | 55°F | Rain Showers Likely | 10 to 15 mph W | 68% |
| Thursday Night | 42°F | Mostly Cloudy | 10 mph NW | 14% |
| Friday | 51°F | Partly Sunny | 5 to 10 mph N | 4% |
| Friday Night | 32°F | Mostly Clear | 0 to 5 mph N | 0% |
| Saturday | 52°F | Sunny | 0 to 5 mph NW | 0% |
| Saturday Night | 35°F | Mostly Clear | 0 to 5 mph W | 1% |
| Sunday | 58°F | Sunny | 5 to 10 mph W | 1% |
| Sunday Night | 36°F | Clear | 0 to 5 mph W | 0% |
| Monday | 64°F | Sunny | 0 to 10 mph SW | 0% |
| Monday Night | 41°F | Mostly Clear | 5 mph W | 0% |
| Tuesday | 64°F | Sunny | 5 mph NW | 0% |
| Tuesday Night | 41°F | Partly Cloudy | 0 mph | 0% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Letts, IA
Last spring frost
Apr 26
First fall frost
Oct 10
Growing season
167 days
Hardiness zone
5b
Explore more for Letts, IA: full frost dates · planting calendar · Iowa frost dates
Climate data from the nearest NOAA station, Columbus Junction, Ia (7.4 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.