Ralston, IA Weather & Growing Conditions
Tonight
43°F
Rain Showers
Rain showers. Cloudy. Low around 43, with temperatures rising to around 45 overnight. Northwest wind 9 to 16 mph, with gusts as high as 23 mph. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 43°F | Rain Showers | 9 to 16 mph NW | 88% |
| Wednesday | 50°F | Chance Rain Showers | 10 to 14 mph W | 32% |
| Wednesday Night | 41°F | Cloudy then Rain Showers Likely | 9 mph WNW | 57% |
| Thursday | 51°F | Chance Rain Showers | 9 mph NW | 53% |
| Thursday Night | 37°F | Mostly Cloudy | 3 to 7 mph N | 9% |
| Friday | 52°F | Partly Sunny | 3 mph N | 2% |
| Friday Night | 33°F | Mostly Cloudy | 1 mph NW | 0% |
| Saturday | 57°F | Mostly Sunny | 0 to 3 mph SW | 1% |
| Saturday Night | 37°F | Mostly Clear | 3 mph W | 4% |
| Sunday | 62°F | Sunny | 5 mph W | 6% |
| Sunday Night | 40°F | Mostly Clear | 5 mph SW | 1% |
| Monday | 65°F | Sunny | 5 to 8 mph WSW | 0% |
| Monday Night | 41°F | Mostly Clear | 5 mph WNW | 0% |
| Tuesday | 63°F | Mostly Sunny | 3 mph W | 0% |
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 Nov 4, 2026.