McGregor, IA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for McGregor, a city in Clayton County, Iowa.
This Afternoon
67°F
Rain Showers Likely
Rain showers likely. Cloudy, with a high near 67. South wind 10 to 16 mph, with gusts as high as 28 mph. Chance of precipitation is 90%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast for McGregor
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 67°F | Rain Showers Likely | 10 to 16 mph S | 89% |
| Tonight | 52°F | Rain Showers | 12 mph S | 89% |
| Wednesday | 55°F | Rain Showers Likely | 10 to 14 mph S | 57% |
| Wednesday Night | 45°F | Rain Showers Likely | 14 mph SW | 84% |
| Thursday | 50°F | Rain Showers | 12 mph W | 75% |
| Thursday Night | 39°F | Slight Chance Rain Showers then Mostly Cloudy | 14 mph N | 15% |
| Friday | 50°F | Partly Sunny | 7 to 12 mph N | 3% |
| Friday Night | 32°F | Partly Cloudy | 1 mph N | 1% |
| Saturday | 52°F | Mostly Sunny | 0 to 3 mph W | 2% |
| Saturday Night | 35°F | Partly Cloudy | 2 mph W | 3% |
| Sunday | 57°F | Sunny | 2 to 7 mph W | 6% |
| Sunday Night | 36°F | Mostly Clear | 2 mph SW | 2% |
| Monday | 61°F | Sunny | 2 to 8 mph SW | 0% |
| Monday Night | 39°F | Mostly Clear | 5 mph W | 1% |
Forecast source: National Weather Service (api.weather.gov) for McGregor (43.028, -91.186). Updated through the day.
Growing snapshot for McGregor
Last spring frost
Apr 28
First fall frost
Oct 12
Growing season
166 days
Hardiness zone
5a
More local growing data for McGregor: nearby ZIP 52158 weather · frost dates · planting calendar · Iowa frost dates
Nearby towns & communities
Clayton
Colesburg
Edgewood
Elkader
Elkport
Farmersburg
Garber
Garnavillo
Guttenberg
Luana
Marquette
North Buena Vista
Osterdock
St. Olaf
Strawberry Point
Volga
Climate data from the nearest NOAA station, Prairie Du Chien, Wi (3 mi from McGregor). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 3, 2026.