Pleasant Plain, IA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Pleasant Plain, a city in Jefferson County, Iowa.
Today
52°F
Slight Chance Rain Showers then Cloudy
A slight chance of rain showers before 9am. Cloudy, with a high near 52. West wind 15 to 20 mph, with gusts as high as 25 mph. Chance of precipitation is 20%.
7-day forecast for Pleasant Plain
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 52°F | Slight Chance Rain Showers then Cloudy | 15 to 20 mph W | 19% |
| Tonight | 44°F | Mostly Cloudy | 10 to 15 mph W | 8% |
| Thursday | 54°F | Rain Showers Likely | 10 to 15 mph W | 62% |
| Thursday Night | 41°F | Mostly Cloudy | 10 mph NW | 14% |
| Friday | 49°F | Partly Sunny | 5 to 10 mph N | 2% |
| Friday Night | 30°F | Partly Cloudy | 0 to 5 mph N | 0% |
| Saturday | 51°F | Mostly Sunny | 0 to 5 mph NW | 0% |
| Saturday Night | 34°F | Mostly Clear | 0 to 5 mph W | 1% |
| Sunday | 57°F | Sunny | 5 mph W | 1% |
| Sunday Night | 35°F | Clear | 5 mph W | 0% |
| Monday | 63°F | Sunny | 5 to 10 mph SW | 0% |
| Monday Night | 40°F | Mostly Clear | 5 mph W | 0% |
| Tuesday | 63°F | Sunny | 5 mph NW | 0% |
| Tuesday Night | 41°F | Partly Cloudy | 0 mph | 1% |
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 Nov 4, 2026.