Ralston, IA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Ralston, a city in Carroll County, Iowa.
Today
78°F
Showers And Thunderstorms Likely
Showers and thunderstorms likely. Mostly cloudy. High near 78, with temperatures falling to around 75 in the afternoon. North wind 6 to 9 mph. Chance of precipitation is 60%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast for Ralston
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 78°F | Showers And Thunderstorms Likely | 6 to 9 mph N | 61% |
| Tonight | 60°F | Showers And Thunderstorms | 3 to 9 mph NNE | 78% |
| Wednesday | 74°F | Chance Showers And Thunderstorms | 6 mph ENE | 37% |
| Wednesday Night | 54°F | Mostly Clear | 0 to 3 mph E | 4% |
| Thursday | 81°F | Sunny | 0 to 5 mph ESE | 1% |
| Thursday Night | 61°F | Mostly Clear | 3 mph SSE | 3% |
| Friday | 86°F | Sunny | 2 to 7 mph S | 6% |
| Friday Night | 66°F | Mostly Clear | 6 mph S | 10% |
| Saturday | 91°F | Mostly Sunny | 2 to 10 mph S | 9% |
| Saturday Night | 70°F | Mostly Clear then Slight Chance Showers And Thunderstorms | 9 mph S | 16% |
| Sunday | 90°F | Slight Chance Showers And Thunderstorms then Mostly Sunny | 9 mph SSE | 16% |
| Sunday Night | 70°F | Chance Showers And Thunderstorms | 6 to 9 mph SSE | 30% |
| Monday | 90°F | Chance Showers And Thunderstorms then Partly Sunny | 12 mph SSE | 30% |
| Monday Night | 71°F | Chance Showers And Thunderstorms | 12 mph ESE | 25% |
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 Aug 4, 2026.