Letts, IA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Letts, a city in Muscatine County, Iowa.
This Afternoon
82°F
Slight Chance Showers And Thunderstorms
A slight chance of rain showers before 4pm, then a slight chance of showers and thunderstorms between 4pm and 5pm, then a chance of showers and thunderstorms. Mostly cloudy, with a high near 82. South wind 5 to 10 mph. Chance of precipitation is 30%.
7-day forecast for Letts
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 82°F | Slight Chance Showers And Thunderstorms | 5 to 10 mph S | 25% |
| Tonight | 66°F | Showers And Thunderstorms | 0 to 5 mph NW | 81% |
| Sunday | 70°F | Showers And Thunderstorms Likely | 5 to 15 mph NE | 72% |
| Sunday Night | 58°F | Showers And Thunderstorms Likely | 10 to 15 mph NE | 59% |
| Monday | 64°F | Rain Showers Likely | 15 mph NE | 69% |
| Monday Night | 54°F | Rain Showers Likely | 10 mph NE | 69% |
| Tuesday | 63°F | Chance Rain Showers | 10 mph NE | 45% |
| Tuesday Night | 50°F | Partly Cloudy | 5 to 10 mph NE | 5% |
| Wednesday | 65°F | Mostly Sunny | 5 to 10 mph NE | 2% |
| Wednesday Night | 53°F | Partly Cloudy | 0 to 5 mph NE | 1% |
| Thursday | 68°F | Partly Sunny | 5 mph NE | 6% |
| Thursday Night | 57°F | Slight Chance Rain Showers | 0 to 5 mph NE | 17% |
| Friday | 72°F | Slight Chance Rain Showers | 0 to 5 mph NE | 17% |
| Friday Night | 57°F | Partly Cloudy | 0 to 5 mph E | 9% |
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 Sep 19, 2026.