Ralston, IA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Ralston, a city in Carroll County, Iowa.
Today
74°F
Patchy Fog
Patchy fog and a chance of showers and thunderstorms before 1pm, then a slight chance of showers and thunderstorms. Mostly cloudy. High near 74, with temperatures falling to around 71 in the afternoon. North northwest wind around 7 mph. Chance of precipitation is 30%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast for Ralston
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 74°F | Patchy Fog | 7 mph NNW | 28% |
| Tonight | 60°F | Slight Chance Showers And Thunderstorms | 8 mph N | 27% |
| Sunday | 66°F | Chance Drizzle then Chance Rain Showers | 10 mph NNE | 43% |
| Sunday Night | 55°F | Chance Rain Showers | 8 mph ENE | 47% |
| Monday | 61°F | Rain Showers Likely | 8 mph ENE | 59% |
| Monday Night | 50°F | Chance Rain Showers | 3 to 7 mph NE | 49% |
| Tuesday | 62°F | Partly Sunny | 6 mph ENE | 8% |
| Tuesday Night | 45°F | Partly Cloudy | 3 mph E | 1% |
| Wednesday | 66°F | Mostly Sunny | 3 mph ESE | 1% |
| Wednesday Night | 50°F | Partly Cloudy | 2 mph SE | 12% |
| Thursday | 67°F | Slight Chance Rain Showers | 3 mph SE | 18% |
| Thursday Night | 54°F | Mostly Cloudy | 2 mph SE | 10% |
| Friday | 69°F | Mostly Cloudy | 1 to 5 mph ESE | 10% |
| Friday Night | 55°F | Mostly Cloudy | 3 mph SE | 12% |
Forecast source: National Weather Service (api.weather.gov) for Ralston (42.042, -94.629). Updated through the day.
Growing snapshot for Ralston
Last spring frost
Apr 27
First fall frost
Oct 10
Growing season
166 days
Hardiness zone
5a
More local growing data for Ralston: nearby ZIP 51459 weather · frost dates · planting calendar · Iowa frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Carroll, Ia (11 mi from Ralston). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.