Ralston, IA Weather & Growing Conditions
Overnight
67°F
Chance Showers And Thunderstorms
A chance of showers and thunderstorms. Mostly cloudy. Low around 67, with temperatures rising to around 69 overnight. South southwest wind around 5 mph. Chance of precipitation is 50%. New rainfall amounts between a tenth and quarter of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 67°F | Chance Showers And Thunderstorms | 5 mph SSW | 49% |
| Saturday | 78°F | Chance Showers And Thunderstorms then Patchy Fog | 3 to 7 mph NW | 43% |
| Saturday Night | 60°F | Chance Showers And Thunderstorms | 9 mph N | 26% |
| Sunday | 66°F | Rain Showers Likely | 10 mph NNE | 46% |
| Sunday Night | 55°F | Chance Rain Showers | 8 mph ENE | 48% |
| Monday | 61°F | Rain Showers Likely | 8 mph ENE | 71% |
| Monday Night | 50°F | Chance Rain Showers | 3 to 7 mph ENE | 59% |
| Tuesday | 62°F | Partly Sunny | 6 mph ENE | 12% |
| Tuesday Night | 45°F | Partly Cloudy | 3 mph E | 3% |
| Wednesday | 66°F | Mostly Sunny | 3 mph ESE | 4% |
| Wednesday Night | 50°F | Partly Cloudy | 2 mph SE | 12% |
| Thursday | 67°F | Slight Chance Rain Showers | 3 mph SE | 22% |
| Thursday Night | 54°F | Mostly Cloudy | 2 mph SE | 15% |
| Friday | 69°F | Partly Sunny | 1 to 5 mph ESE | 15% |
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 Sep 19, 2026.