Riverton, IA Weather & Growing Conditions
This Afternoon
62°F
Rain Showers Likely
Rain showers likely. Cloudy. High near 62, with temperatures falling to around 54 in the afternoon. North northwest wind around 21 mph, with gusts as high as 29 mph. Chance of precipitation is 70%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 62°F | Rain Showers Likely | 21 mph NNW | 71% |
| Tonight | 43°F | Chance Rain Showers then Cloudy | 14 to 20 mph NW | 44% |
| Wednesday | 54°F | Mostly Cloudy | 9 to 16 mph WNW | 8% |
| Wednesday Night | 40°F | Partly Cloudy then Slight Chance Rain Showers | 8 mph W | 16% |
| Thursday | 53°F | Chance Rain Showers | 8 to 12 mph NW | 28% |
| Thursday Night | 38°F | Mostly Cloudy | 7 mph NNW | 5% |
| Friday | 54°F | Partly Sunny | 1 to 5 mph N | 5% |
| Friday Night | 35°F | Mostly Cloudy | 1 mph WNW | 0% |
| Saturday | 59°F | Mostly Sunny | 3 mph SW | 3% |
| Saturday Night | 38°F | Mostly Clear | 2 mph W | 6% |
| Sunday | 64°F | Sunny | 3 mph WSW | 3% |
| Sunday Night | 40°F | Mostly Clear | 5 mph SSW | 0% |
| Monday | 68°F | Sunny | 5 to 10 mph SW | 0% |
| Monday Night | 42°F | Mostly Clear | 5 mph NW | 0% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Riverton, IA
Last spring frost
Apr 19
First fall frost
Oct 19
Growing season
182 days
Hardiness zone
5b
Explore more for Riverton, IA: full frost dates · planting calendar · Iowa frost dates
Climate data from the nearest NOAA station, Sidney 1Sse, Ia (6.3 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.