Coulter, IA Weather & Growing Conditions
Tonight
65°F
Patchy Fog
Patchy fog and showers and thunderstorms likely before 1am, then patchy fog and showers and thunderstorms likely between 1am and 4am, then patchy fog and showers and thunderstorms likely. Some of the storms could produce heavy rain. Cloudy. Low around 65, with temperatures rising to around 67 overnight. South southeast wind 7 to 10 mph. Chance of precipitation is 70%. New rainfall amounts between three quarters and one inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 65°F | Patchy Fog | 7 to 10 mph SSE | 73% |
| Saturday | 75°F | Patchy Fog | 8 mph W | 45% |
| Saturday Night | 58°F | Slight Chance Showers And Thunderstorms | 8 to 12 mph N | 24% |
| Sunday | 65°F | Chance Rain Showers | 12 to 15 mph NE | 30% |
| Sunday Night | 52°F | Chance Rain Showers | 13 mph ENE | 27% |
| Monday | 59°F | Chance Rain Showers | 10 to 14 mph ENE | 53% |
| Monday Night | 48°F | Chance Rain Showers | 7 to 10 mph ENE | 51% |
| Tuesday | 59°F | Slight Chance Rain Showers then Partly Sunny | 6 to 9 mph ENE | 18% |
| Tuesday Night | 45°F | Partly Cloudy | 5 mph ENE | 2% |
| Wednesday | 63°F | Sunny | 5 mph ESE | 1% |
| Wednesday Night | 49°F | Partly Cloudy | 1 mph SE | 5% |
| Thursday | 66°F | Slight Chance Rain Showers | 3 mph SSE | 17% |
| Thursday Night | 52°F | Mostly Cloudy | 1 mph SE | 8% |
| Friday | 67°F | Partly Sunny | 5 mph ESE | 8% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Coulter, IA
Last spring frost
Apr 29
First fall frost
Oct 9
Growing season
162 days
Hardiness zone
5a
Explore more for Coulter, IA: full frost dates · planting calendar · Iowa frost dates
Climate data from the nearest NOAA station, Hampton, Ia (8.6 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.