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Webster, IA Weather & Growing Conditions

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

Overnight
68°F
Patchy Fog
Patchy fog and a chance of showers and thunderstorms. Mostly cloudy. Low around 68, with temperatures rising to around 74 overnight. South wind around 5 mph. Chance of precipitation is 50%.

7-day forecast for Webster

WhenTempForecastWindPrecip
Overnight 68°F Patchy Fog 5 mph S 53%
Saturday 81°F Patchy Fog 5 to 10 mph S 91%
Saturday Night 63°F Chance Showers And Thunderstorms then Showers And Thunderstorms 5 to 10 mph NW 80%
Sunday 68°F Showers And Thunderstorms 10 to 15 mph NE 78%
Sunday Night 57°F Showers And Thunderstorms Likely 15 mph NE 59%
Monday 62°F Rain Showers Likely 15 mph NE 59%
Monday Night 51°F Chance Rain Showers 10 to 15 mph NE 45%
Tuesday 60°F Chance Rain Showers then Partly Sunny 10 mph NE 35%
Tuesday Night 46°F Partly Cloudy 5 to 10 mph NE 4%
Wednesday 65°F Sunny 5 mph NE 0%
Wednesday Night 50°F Partly Cloudy 5 mph NE 2%
Thursday 66°F Partly Sunny 5 mph E 7%
Thursday Night 54°F Partly Cloudy 5 mph E 6%
Friday 69°F Mostly Sunny 5 mph E 6%

Forecast source: National Weather Service (api.weather.gov) for Webster (41.438, -92.172). Updated through the day.

Growing snapshot for Webster

Last spring frost
Apr 24
First fall frost
Oct 15
Growing season
172 days
Hardiness zone
5b

More local growing data for Webster: nearby ZIP 52355 weather · frost dates · planting calendar · Iowa frost dates

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Climate data from the nearest NOAA station, Sigourney, Ia (8.7 mi from Webster). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.