McGregor, IA Weather & Growing Conditions
Today
80°F
Chance Rain Showers
A chance of rain showers between 9am and 1pm, then a chance of showers and thunderstorms between 1pm and 4pm, then a chance of showers and thunderstorms. Mostly cloudy. High near 80, with temperatures falling to around 76 in the afternoon. West wind around 8 mph. Chance of precipitation is 50%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 80°F | Chance Rain Showers | 8 mph W | 49% |
| Tonight | 61°F | Showers And Thunderstorms | 6 mph NW | 85% |
| Wednesday | 76°F | Slight Chance Rain Showers then Partly Sunny | 5 mph NW | 19% |
| Wednesday Night | 55°F | Partly Cloudy | 0 to 3 mph NW | 5% |
| Thursday | 81°F | Sunny | 2 mph SE | 3% |
| Thursday Night | 59°F | Mostly Clear | 2 mph S | 0% |
| Friday | 83°F | Sunny | 1 to 7 mph S | 4% |
| Friday Night | 64°F | Mostly Clear | 6 mph S | 11% |
| Saturday | 85°F | Mostly Sunny | 3 to 7 mph SW | 9% |
| Saturday Night | 68°F | Chance Showers And Thunderstorms | 7 mph S | 33% |
| Sunday | 87°F | Chance Showers And Thunderstorms | 9 mph SW | 33% |
| Sunday Night | 67°F | Chance Showers And Thunderstorms | 5 to 8 mph S | 42% |
| Monday | 85°F | Chance Showers And Thunderstorms | 7 mph S | 42% |
| Monday Night | 67°F | Slight Chance Showers And Thunderstorms | 5 to 8 mph NE | 34% |
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 Aug 4, 2026.