Letts, IA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Letts, a city in Muscatine County, Iowa.
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 for Letts
| 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) for Letts (41.330, -91.235). Updated through the day.
Growing snapshot for Letts
Last spring frost
Apr 26
First fall frost
Oct 10
Growing season
167 days
Hardiness zone
5b
More local growing data for Letts: nearby ZIP 52754 weather · frost dates · planting calendar · Iowa frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Columbus Junction, Ia (7.4 mi from Letts). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.