Fostoria, IA Weather & Growing Conditions
Tonight
63°F
Patchy Fog
Patchy fog and a chance of showers and thunderstorms before 10pm, then areas of fog and a chance of showers and thunderstorms between 10pm and 11pm, then patchy fog and a chance of showers and thunderstorms between 11pm and midnight, then patchy fog and a slight chance of showers and thunderstorms between midnight and 1am, then patchy fog and a chance of showers and thunderstorms between 1am and 3am, then areas of fog and a chance of showers and thunderstorms between 3am and 5am, then patchy fog and a chance of showers and thunderstorms. Cloudy, with a low around 63. Northeast wind 5 to 10 mph, with gusts as high as 25 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 |
|---|---|---|---|---|
| Tonight | 63°F | Patchy Fog | 5 to 10 mph NE | 53% |
| Saturday | 70°F | Areas Of Fog | 5 to 10 mph N | 28% |
| Saturday Night | 56°F | Slight Chance Rain Showers then Mostly Cloudy | 10 to 15 mph NNE | 22% |
| Sunday | 65°F | Slight Chance Rain Showers | 15 mph NE | 20% |
| Sunday Night | 52°F | Chance Rain Showers | 10 to 15 mph ENE | 50% |
| Monday | 60°F | Chance Rain Showers | 10 mph ENE | 54% |
| Monday Night | 47°F | Chance Rain Showers | 5 to 10 mph ENE | 42% |
| Tuesday | 61°F | Partly Sunny | 5 to 10 mph E | 12% |
| Tuesday Night | 46°F | Partly Cloudy | 5 mph ESE | 1% |
| Wednesday | 65°F | Mostly Sunny | 5 mph SE | 4% |
| Wednesday Night | 50°F | Partly Cloudy then Slight Chance Rain Showers | 5 mph SSE | 21% |
| Thursday | 68°F | Slight Chance Rain Showers | 5 mph SSE | 21% |
| Thursday Night | 52°F | Mostly Cloudy | 5 mph SSE | 10% |
| Friday | 69°F | Partly Sunny | 5 to 10 mph SE | 10% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Fostoria, IA
Last spring frost
May 1
First fall frost
Oct 3
Growing season
154 days
Hardiness zone
5a
Explore more for Fostoria, IA: full frost dates · planting calendar · Iowa frost dates
Climate data from the nearest NOAA station, Spencer 1 N, Ia (5.2 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.