Montezuma, IA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Montezuma, a city in Poweshiek County, Iowa.
This Afternoon
70°F
Showers And Thunderstorms
Showers and thunderstorms. Cloudy. High near 70, with temperatures falling to around 64 in the afternoon. South southeast wind around 10 mph, with gusts as high as 18 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch possible.
7-day forecast for Montezuma
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 70°F | Showers And Thunderstorms | 10 mph SSE | 79% |
| Tonight | 47°F | Chance Rain Showers | 7 to 12 mph SSW | 48% |
| Wednesday | 53°F | Mostly Cloudy then Chance Rain Showers | 12 to 15 mph W | 30% |
| Wednesday Night | 43°F | Mostly Cloudy | 12 mph WSW | 14% |
| Thursday | 53°F | Chance Rain Showers | 10 mph WNW | 47% |
| Thursday Night | 40°F | Slight Chance Rain Showers then Mostly Cloudy | 8 mph NNW | 17% |
| Friday | 51°F | Partly Sunny | 3 to 8 mph N | 4% |
| Friday Night | 33°F | Partly Cloudy | 2 mph NNW | 1% |
| Saturday | 54°F | Mostly Sunny | 3 mph W | 1% |
| Saturday Night | 36°F | Mostly Clear | 1 to 5 mph W | 4% |
| Sunday | 60°F | Sunny | 6 mph W | 5% |
| Sunday Night | 37°F | Mostly Clear | 5 mph SW | 2% |
| Monday | 64°F | Sunny | 5 to 9 mph SW | 0% |
| Monday Night | 40°F | Mostly Clear | 5 mph WNW | 0% |
Forecast source: National Weather Service (api.weather.gov) for Montezuma (41.583, -92.528). Updated through the day.
Growing snapshot for Montezuma
Last spring frost
May 3
First fall frost
Oct 6
Growing season
155 days
Hardiness zone
5b
More local growing data for Montezuma: nearby ZIP 50171 weather · frost dates · planting calendar · Iowa frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Grinnell 3 Sw, Ia (14.9 mi from Montezuma). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.