Dexter, IA Weather & Growing Conditions
Overnight
70°F
Chance Showers And Thunderstorms
A chance of showers and thunderstorms. Mostly cloudy. Low around 70, with temperatures rising to around 72 overnight. Southwest wind around 6 mph. Chance of precipitation is 50%. New rainfall amounts between a tenth and quarter of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 70°F | Chance Showers And Thunderstorms | 6 mph SW | 45% |
| Saturday | 81°F | Chance Showers And Thunderstorms | 3 to 8 mph W | 50% |
| Saturday Night | 62°F | Chance Showers And Thunderstorms | 7 to 10 mph N | 39% |
| Sunday | 66°F | Chance Rain Showers | 9 to 13 mph NNE | 44% |
| Sunday Night | 56°F | Showers And Thunderstorms Likely | 12 mph NE | 57% |
| Monday | 60°F | Rain Showers Likely | 12 mph NE | 59% |
| Monday Night | 52°F | Chance Rain Showers | 7 to 10 mph NE | 47% |
| Tuesday | 60°F | Partly Sunny | 9 mph NE | 11% |
| Tuesday Night | 46°F | Partly Cloudy | 3 to 7 mph ENE | 5% |
| Wednesday | 64°F | Mostly Sunny | 5 mph E | 2% |
| Wednesday Night | 51°F | Partly Cloudy | 3 mph ESE | 9% |
| Thursday | 66°F | Slight Chance Rain Showers | 5 mph SE | 24% |
| Thursday Night | 55°F | Mostly Cloudy | 5 mph ESE | 11% |
| Friday | 67°F | Partly Sunny | 6 mph ESE | 13% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Dexter, IA
Last spring frost
Apr 30
First fall frost
Oct 3
Growing season
157 days
Hardiness zone
5b
Explore more for Dexter, IA: full frost dates · planting calendar · Iowa frost dates
Climate data from the nearest NOAA station, Winterset 1S, Ia (14.3 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.