Monmouth, IA Weather & Growing Conditions
This Afternoon
76°F
Showers And Thunderstorms Likely
Showers and thunderstorms likely. Mostly cloudy. High near 76, with temperatures falling to around 71 in the afternoon. South wind around 5 mph. Chance of precipitation is 70%.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 76°F | Showers And Thunderstorms Likely | 5 mph S | 69% |
| Tonight | 62°F | Showers And Thunderstorms | 0 to 5 mph NE | 84% |
| Sunday | 66°F | Rain Showers Likely | 10 mph NE | 56% |
| Sunday Night | 55°F | Chance Rain Showers | 5 to 10 mph NE | 35% |
| Monday | 63°F | Rain Showers Likely | 10 mph NE | 64% |
| Monday Night | 50°F | Rain Showers Likely | 5 to 10 mph NE | 64% |
| Tuesday | 62°F | Chance Rain Showers | 5 to 10 mph NE | 51% |
| Tuesday Night | 48°F | Mostly Cloudy | 5 mph NE | 8% |
| Wednesday | 64°F | Partly Sunny | 5 mph NE | 3% |
| Wednesday Night | 51°F | Partly Cloudy | 0 to 5 mph NE | 2% |
| Thursday | 66°F | Partly Sunny then Slight Chance Rain Showers | 0 to 5 mph E | 15% |
| Thursday Night | 54°F | Slight Chance Rain Showers | 0 mph | 17% |
| Friday | 69°F | Partly Sunny | 0 to 5 mph NE | 12% |
| Friday Night | 54°F | Mostly Cloudy | 0 mph | 9% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Monmouth, IA
Last spring frost
Apr 25
First fall frost
Oct 14
Growing season
171 days
Hardiness zone
5a
Explore more for Monmouth, IA: full frost dates · planting calendar · Iowa frost dates
Climate data from the nearest NOAA station, Maquoketa, Ia (12.1 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 20, 2026.