Fremont, IA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Fremont, a city in Mahaska County, Iowa.
Tonight
70°F
Patchy Fog then Chance Showers And Thunderstorms
Patchy fog before midnight, then a chance of showers and thunderstorms between midnight and 2am, then patchy fog and a chance of showers and thunderstorms between 2am and 4am, then patchy fog and a chance of showers and thunderstorms. Mostly cloudy, with a low around 70. Southeast wind 7 to 10 mph. Chance of precipitation is 40%. New rainfall amounts between a tenth and quarter of an inch possible.
7-day forecast for Fremont
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 70°F | Patchy Fog then Chance Showers And Thunderstorms | 7 to 10 mph SE | 40% |
| Saturday | 84°F | Chance Showers And Thunderstorms | 9 mph SSW | 45% |
| Saturday Night | 65°F | Chance Showers And Thunderstorms then Showers And Thunderstorms Likely | 5 to 8 mph NNW | 71% |
| Sunday | 70°F | Showers And Thunderstorms Likely | 8 to 13 mph NNE | 71% |
| Sunday Night | 59°F | Showers And Thunderstorms Likely | 13 mph NE | 71% |
| Monday | 63°F | Rain Showers Likely | 14 mph NE | 59% |
| Monday Night | 53°F | Rain Showers Likely | 9 to 13 mph NE | 59% |
| Tuesday | 61°F | Chance Rain Showers then Mostly Cloudy | 10 mph NE | 26% |
| Tuesday Night | 49°F | Partly Cloudy | 5 to 8 mph NE | 6% |
| Wednesday | 66°F | Mostly Sunny | 6 mph NE | 1% |
| Wednesday Night | 52°F | Partly Cloudy | 3 mph ENE | 3% |
| Thursday | 68°F | Partly Sunny | 3 mph E | 8% |
| Thursday Night | 55°F | Partly Cloudy | 2 mph E | 8% |
| Friday | 69°F | Slight Chance Rain Showers | 5 mph E | 15% |
Forecast source: National Weather Service (api.weather.gov) for Fremont (41.212, -92.434). Updated through the day.
Growing snapshot for Fremont
Last spring frost
Apr 23
First fall frost
Oct 14
Growing season
172 days
Hardiness zone
5b
More local growing data for Fremont: nearby ZIP 52561 weather · frost dates · planting calendar · Iowa frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Ottumwa Industrial Ap, Ia (7.8 mi from Fremont). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.