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Polk City, IA Weather & Growing Conditions

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

This Afternoon
83°F
Slight Chance Showers And Thunderstorms
A slight chance of showers and thunderstorms. Mostly cloudy. High near 83, with temperatures falling to around 78 in the afternoon. West wind around 6 mph. Chance of precipitation is 20%. New rainfall amounts less than a tenth of an inch possible.

7-day forecast for Polk City

WhenTempForecastWindPrecip
This Afternoon 83°F Slight Chance Showers And Thunderstorms 6 mph W 22%
Tonight 62°F Chance Showers And Thunderstorms 9 mph N 56%
Sunday 66°F Chance Rain Showers then Chance Drizzle 9 to 13 mph NE 38%
Sunday Night 57°F Rain Showers Likely 13 mph NE 63%
Monday 60°F Rain Showers 12 mph NE 83%
Monday Night 52°F Rain Showers Likely 7 to 10 mph NE 72%
Tuesday 61°F Slight Chance Rain Showers then Partly Sunny 8 mph NE 18%
Tuesday Night 48°F Partly Cloudy 2 to 8 mph NE 2%
Wednesday 65°F Mostly Sunny 6 mph ENE 0%
Wednesday Night 53°F Partly Cloudy 3 mph ESE 8%
Thursday 67°F Slight Chance Rain Showers 2 to 6 mph SE 22%
Thursday Night 58°F Slight Chance Rain Showers 3 mph ESE 21%
Friday 69°F Slight Chance Rain Showers 2 to 6 mph ESE 20%
Friday Night 59°F Mostly Cloudy 5 mph ESE 11%

Forecast source: National Weather Service (api.weather.gov) for Polk City (41.782, -93.723). Updated through the day.

Growing snapshot for Polk City

Last spring frost
Apr 19
First fall frost
Oct 18
Growing season
179 days
Hardiness zone
5b

More local growing data for Polk City: nearby ZIP 50226 weather · frost dates · planting calendar · Iowa frost dates

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Climate data from the nearest NOAA station, Des Moines Wsfo-Johnston, Ia (4.3 mi from Polk City). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 20, 2026.