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Fostoria, IA Weather & Growing Conditions

Local forecast, frost dates, hardiness zone and planting guidance for Fostoria, a city in Clay County, Iowa.

Overnight
63°F
Areas Of Fog
Areas of fog and a slight chance of showers and thunderstorms. Cloudy. Low around 63, with temperatures rising to around 67 overnight. East northeast wind around 5 mph. Chance of precipitation is 20%. New rainfall amounts between three quarters and one inch possible.

7-day forecast for Fostoria

WhenTempForecastWindPrecip
Overnight 63°F Areas Of Fog 5 mph ENE 19%
Saturday 68°F Areas Of Fog 5 to 15 mph N 27%
Saturday Night 56°F Slight Chance Rain Showers then Cloudy 10 to 15 mph NNE 16%
Sunday 66°F Mostly Cloudy 15 mph NE 14%
Sunday Night 52°F Chance Rain Showers 10 to 15 mph ENE 37%
Monday 61°F Chance Rain Showers 10 mph ENE 50%
Monday Night 46°F Chance Rain Showers then Mostly Cloudy 5 to 10 mph ENE 29%
Tuesday 61°F Partly Sunny 5 to 10 mph E 5%
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) for Fostoria (43.243, -95.155). Updated through the day.

Growing snapshot for Fostoria

Last spring frost
May 1
First fall frost
Oct 3
Growing season
154 days
Hardiness zone
5a

More local growing data for Fostoria: nearby ZIP 51340 weather · frost dates · planting calendar · Iowa frost dates

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Climate data from the nearest NOAA station, Spencer 1 N, Ia (5.2 mi from Fostoria). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.