St. Paul, IA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for St. Paul, a city in Lee County, Iowa.
Tonight
50°F
Mostly Cloudy
Mostly cloudy. Low around 50, with temperatures rising to around 52 overnight. Southwest wind around 10 mph, with gusts as high as 20 mph.
7-day forecast for St. Paul
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 50°F | Mostly Cloudy | 10 mph SW | 7% |
| Wednesday | 55°F | Slight Chance Rain Showers then Mostly Cloudy | 10 to 15 mph W | 18% |
| Wednesday Night | 45°F | Mostly Cloudy | 10 mph SW | 4% |
| Thursday | 55°F | Chance Rain Showers | 5 to 10 mph W | 50% |
| Thursday Night | 43°F | Slight Chance Rain Showers then Mostly Cloudy | 5 mph NW | 20% |
| Friday | 50°F | Partly Sunny | 5 to 10 mph N | 5% |
| Friday Night | 32°F | Partly Cloudy | 0 to 5 mph N | 0% |
| Saturday | 52°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 | 36°F | Clear | 0 mph | 0% |
| Monday | 64°F | Sunny | 0 to 5 mph SW | 0% |
| Monday Night | 41°F | Mostly Clear | 0 to 5 mph W | 0% |
| Tuesday | 64°F | Sunny | 0 to 5 mph NW | 0% |
Forecast source: National Weather Service (api.weather.gov) for St. Paul (40.768, -91.516). Updated through the day.
Growing snapshot for St. Paul
Last spring frost
Apr 17
First fall frost
Oct 22
Growing season
187 days
Hardiness zone
6a
More local growing data for St. Paul: nearby ZIP 52657 weather · frost dates · planting calendar · Iowa frost dates
Nearby towns & communities
Argyle
Denmark
Donnellson
Farmington
Fort Madison
Franklin
Hillsboro
Houghton
Keokuk
Montrose
Mooar
Oak Hills
Sandusky
West Point
Wever
Climate data from the nearest NOAA station, Donnellson, Ia (8.8 mi from St. Paul). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.