Harman US

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
Chance Showers And Thunderstorms
A chance of showers and thunderstorms before 4am, then showers and thunderstorms likely. Mostly cloudy. Low around 68, with temperatures rising to around 70 overnight. Southeast wind around 10 mph. Chance of precipitation is 60%.

7-day forecast for Webster

WhenTempForecastWindPrecip
Overnight 68°F Chance Showers And Thunderstorms 10 mph SE 58%
Saturday 82°F Showers And Thunderstorms Likely 5 to 10 mph S 62%
Saturday Night 63°F Showers And Thunderstorms 5 to 10 mph N 76%
Sunday 69°F Showers And Thunderstorms Likely 10 to 15 mph NE 76%
Sunday Night 56°F Showers And Thunderstorms Likely 15 mph NE 59%
Monday 62°F Rain Showers Likely 15 mph NE 59%
Monday Night 51°F Rain Showers Likely 10 to 15 mph NE 59%
Tuesday 60°F Slight Chance Rain Showers then Mostly Cloudy 10 mph NE 24%
Tuesday Night 47°F Partly Cloudy 5 to 10 mph NE 7%
Wednesday 65°F Mostly Sunny 5 mph NE 1%
Wednesday Night 51°F Partly Cloudy 0 to 5 mph NE 3%
Thursday 67°F Partly Sunny 5 mph E 9%
Thursday Night 54°F Partly Cloudy 0 to 5 mph E 8%
Friday 68°F Mostly Sunny 5 mph NE 7%

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

Nearby towns & communities

All Iowa locations ›

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.