McGregor, IA Weather & Growing Conditions
Today
56°F
Mostly Cloudy
Mostly cloudy. High near 56, with temperatures falling to around 54 in the afternoon. Southwest wind around 14 mph, with gusts as high as 24 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 56°F | Mostly Cloudy | 14 mph SW | 14% |
| Tonight | 45°F | Chance Rain Showers | 14 mph W | 53% |
| Thursday | 53°F | Slight Chance Rain Showers then Cloudy | 10 to 14 mph NW | 22% |
| Thursday Night | 38°F | Mostly Cloudy then Slight Chance Rain Showers | 7 to 12 mph N | 15% |
| Friday | 49°F | Mostly Sunny | 3 to 7 mph N | 0% |
| Friday Night | 29°F | Mostly Clear | 2 mph N | 0% |
| Saturday | 52°F | Sunny | 0 to 5 mph W | 0% |
| Saturday Night | 34°F | Mostly Clear | 3 mph W | 2% |
| Sunday | 57°F | Sunny | 3 to 7 mph W | 3% |
| Sunday Night | 35°F | Mostly Clear | 3 mph SW | 0% |
| Monday | 62°F | Sunny | 2 to 9 mph SW | 0% |
| Monday Night | 40°F | Mostly Clear | 2 to 6 mph W | 0% |
| Tuesday | 60°F | Sunny | 3 mph NW | 0% |
| Tuesday Night | 39°F | Partly Cloudy | 1 mph NW | 1% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for McGregor, IA
Last spring frost
Apr 28
First fall frost
Oct 12
Growing season
166 days
Hardiness zone
5a
Explore more for McGregor, IA: full frost dates · planting calendar · Iowa frost dates
Climate data from the nearest NOAA station, Prairie Du Chien, Wi (5.7 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.