Riverton, IA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Riverton, a city in Fremont County, Iowa.
This Afternoon
62°F
Rain Showers
Rain showers. Cloudy. High near 62, with temperatures falling to around 54 in the afternoon. North northwest wind around 20 mph, with gusts as high as 29 mph. Chance of precipitation is 90%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast for Riverton
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 62°F | Rain Showers | 20 mph NNW | 93% |
| Tonight | 43°F | Chance Rain Showers then Cloudy | 12 to 18 mph NW | 45% |
| Wednesday | 54°F | Mostly Cloudy | 9 to 15 mph WNW | 7% |
| Wednesday Night | 40°F | Partly Cloudy then Slight Chance Rain Showers | 7 mph W | 17% |
| Thursday | 53°F | Chance Rain Showers | 7 to 12 mph NW | 29% |
| Thursday Night | 38°F | Mostly Cloudy | 6 mph NNW | 5% |
| Friday | 54°F | Partly Sunny | 1 to 5 mph N | 5% |
| Friday Night | 35°F | Mostly Cloudy | 0 mph | 0% |
| Saturday | 60°F | Mostly Sunny | 0 to 3 mph SW | 3% |
| Saturday Night | 38°F | Mostly Clear | 1 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 | 1 to 5 mph NW | 0% |
Forecast source: National Weather Service (api.weather.gov) for Riverton (40.687, -95.569). Updated through the day.
Growing snapshot for Riverton
Last spring frost
Apr 19
First fall frost
Oct 19
Growing season
182 days
Hardiness zone
5b
More local growing data for Riverton: nearby ZIP 51650 weather · frost dates · planting calendar · Iowa frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Sidney 1Sse, Ia (6.3 mi from Riverton). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 3, 2026.