Harman US

Garwin, IA Weather & Growing Conditions

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

Today
80°F
Showers And Thunderstorms Likely
Showers and thunderstorms likely before 1pm, then a chance of showers and thunderstorms. Mostly cloudy. High near 80, with temperatures falling to around 77 in the afternoon. Southwest wind around 9 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch possible.

7-day forecast for Garwin

WhenTempForecastWindPrecip
Today 80°F Showers And Thunderstorms Likely 9 mph SW 58%
Tonight 60°F Chance Showers And Thunderstorms 7 to 10 mph N 37%
Sunday 66°F Chance Rain Showers 10 to 14 mph NE 38%
Sunday Night 54°F Chance Rain Showers 13 mph ENE 45%
Monday 62°F Chance Rain Showers 13 mph NE 45%
Monday Night 49°F Chance Rain Showers 7 to 10 mph NE 44%
Tuesday 60°F Slight Chance Rain Showers then Partly Sunny 9 mph ENE 24%
Tuesday Night 45°F Partly Cloudy 3 to 7 mph ENE 3%
Wednesday 65°F Sunny 5 mph ENE 1%
Wednesday Night 49°F Partly Cloudy 3 mph E 4%
Thursday 66°F Partly Sunny 3 mph E 11%
Thursday Night 52°F Partly Cloudy 2 mph E 9%
Friday 69°F Partly Sunny 5 mph E 6%
Friday Night 53°F Partly Cloudy 3 mph ESE 9%

Forecast source: National Weather Service (api.weather.gov) for Garwin (42.093, -92.679). Updated through the day.

Growing snapshot for Garwin

Last spring frost
Apr 30
First fall frost
Oct 9
Growing season
162 days
Hardiness zone
5a

More local growing data for Garwin: nearby ZIP 50632 weather · frost dates · planting calendar · Iowa frost dates

Nearby towns & communities

All Iowa locations ›

Climate data from the nearest NOAA station, Toledo 3N, Ia (6.5 mi from Garwin). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.