Montezuma, IA Weather & Growing Conditions
Tonight
47°F
Cloudy then Slight Chance Rain Showers
A slight chance of rain showers between 1am and 3am. Cloudy. Low around 47, with temperatures rising to around 50 overnight. Southwest wind 8 to 12 mph, with gusts as high as 20 mph. Chance of precipitation is 20%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 47°F | Cloudy then Slight Chance Rain Showers | 8 to 12 mph SW | 19% |
| 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% |
| Tuesday | 63°F | Sunny | 5 mph NW | 0% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Montezuma, IA
Last spring frost
May 3
First fall frost
Oct 6
Growing season
155 days
Hardiness zone
5b
Explore more for Montezuma, IA: full frost dates · planting calendar · Iowa frost dates
Climate data from the nearest NOAA station, Grinnell 3 Sw, Ia (14.9 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.