Pleasant Plain, IA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Pleasant Plain, a city in Jefferson County, Iowa.
This Afternoon
81°F
Chance Rain Showers
A chance of rain showers. Mostly cloudy, with a high near 81. Southwest wind 5 to 10 mph. Chance of precipitation is 30%.
7-day forecast for Pleasant Plain
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 81°F | Chance Rain Showers | 5 to 10 mph SW | 26% |
| Tonight | 64°F | Chance Showers And Thunderstorms then Showers And Thunderstorms Likely | 5 mph NW | 72% |
| Sunday | 69°F | Showers And Thunderstorms Likely | 5 to 15 mph N | 71% |
| Sunday Night | 57°F | Showers And Thunderstorms Likely | 10 to 15 mph NE | 63% |
| Monday | 61°F | Rain Showers Likely | 15 mph NE | 64% |
| Monday Night | 53°F | Rain Showers Likely | 10 to 15 mph NE | 64% |
| Tuesday | 60°F | Chance Rain Showers | 10 mph NE | 30% |
| Tuesday Night | 48°F | Partly Cloudy | 5 to 10 mph NE | 5% |
| Wednesday | 63°F | Mostly Sunny | 5 mph NE | 1% |
| Wednesday Night | 52°F | Partly Cloudy | 5 mph NE | 0% |
| Thursday | 67°F | Partly Sunny | 5 mph E | 9% |
| Thursday Night | 56°F | Slight Chance Rain Showers | 0 mph | 19% |
| Friday | 70°F | Slight Chance Rain Showers | 0 to 5 mph E | 19% |
| Friday Night | 57°F | Mostly Cloudy | 5 mph E | 9% |
Forecast source: National Weather Service (api.weather.gov) for Pleasant Plain (41.147, -91.860). Updated through the day.
Growing snapshot for Pleasant Plain
Last spring frost
Apr 28
First fall frost
Oct 11
Growing season
165 days
Hardiness zone
5b
More local growing data for Pleasant Plain: nearby ZIP 52540 weather · frost dates · planting calendar · Iowa frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Washington, Ia (10.6 mi from Pleasant Plain). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.