Ralston, IA Weather & Growing Conditions
Today
78°F
Showers And Thunderstorms Likely
Showers and thunderstorms likely. Mostly cloudy. High near 78, with temperatures falling to around 74 in the afternoon. North wind around 9 mph. Chance of precipitation is 60%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 78°F | Showers And Thunderstorms Likely | 9 mph N | 60% |
| Tonight | 60°F | Showers And Thunderstorms | 3 to 9 mph N | 77% |
| Wednesday | 74°F | Chance Showers And Thunderstorms | 6 mph ENE | 37% |
| Wednesday Night | 54°F | Mostly Clear | 0 to 3 mph ENE | 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 | 15% |
| Sunday | 90°F | Slight Chance Showers And Thunderstorms then Mostly Sunny | 9 mph SSE | 15% |
| Sunday Night | 70°F | Chance Showers And Thunderstorms | 6 to 9 mph SSE | 29% |
| Monday | 90°F | Chance Showers And Thunderstorms then Partly Sunny | 12 mph SSE | 29% |
| Monday Night | 71°F | Chance Showers And Thunderstorms | 12 mph ESE | 25% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Ralston, IA
Last spring frost
Apr 27
First fall frost
Oct 10
Growing season
166 days
Hardiness zone
5a
Explore more for Ralston, IA: full frost dates · planting calendar · Iowa frost dates
Climate data from the nearest NOAA station, Carroll, Ia (11 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.