Coulter, IA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Coulter, a city in Franklin County, Iowa.
Today
76°F
Showers And Thunderstorms
Showers and thunderstorms. Mostly cloudy. High near 76, with temperatures falling to around 73 in the afternoon. Northwest wind around 9 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch possible.
7-day forecast for Coulter
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 76°F | Showers And Thunderstorms | 9 mph NW | 79% |
| Tonight | 57°F | Showers And Thunderstorms Likely | 3 to 8 mph N | 58% |
| Wednesday | 74°F | Partly Sunny | 5 mph NNE | 11% |
| Wednesday Night | 53°F | Mostly Clear | 2 mph ESE | 2% |
| Thursday | 79°F | Sunny | 3 mph S | 2% |
| Thursday Night | 59°F | Mostly Clear | 5 mph S | 1% |
| Friday | 82°F | Sunny | 5 to 10 mph S | 7% |
| Friday Night | 64°F | Slight Chance Showers And Thunderstorms | 8 mph S | 23% |
| Saturday | 86°F | Slight Chance Showers And Thunderstorms then Sunny | 6 to 10 mph S | 15% |
| Saturday Night | 68°F | Mostly Clear then Slight Chance Showers And Thunderstorms | 9 to 13 mph SSE | 21% |
| Sunday | 86°F | Slight Chance Showers And Thunderstorms then Mostly Sunny | 12 mph SE | 21% |
| Sunday Night | 68°F | Slight Chance Showers And Thunderstorms | 9 mph SE | 32% |
| Monday | 85°F | Chance Showers And Thunderstorms | 12 mph SSE | 32% |
| Monday Night | 67°F | Slight Chance Showers And Thunderstorms | 13 mph E | 34% |
Forecast source: National Weather Service (api.weather.gov) for Coulter (42.733, -93.370). Updated through the day.
Growing snapshot for Coulter
Last spring frost
Apr 29
First fall frost
Oct 9
Growing season
162 days
Hardiness zone
5a
More local growing data for Coulter: nearby ZIP 50431 weather · frost dates · planting calendar · Iowa frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Hampton, Ia (8.6 mi from Coulter). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.