Polk City, IA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Polk City, a city in Polk County, Iowa.
Today
80°F
Chance Showers And Thunderstorms
A chance of showers and thunderstorms before 10am, then a chance of showers and thunderstorms between 10am and noon, then a slight chance of showers and thunderstorms. Mostly cloudy. High near 80, with temperatures falling to around 77 in the afternoon. West wind 5 to 8 mph. Chance of precipitation is 50%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast for Polk City
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 80°F | Chance Showers And Thunderstorms | 5 to 8 mph W | 45% |
| Tonight | 62°F | Chance Showers And Thunderstorms | 9 mph N | 36% |
| Sunday | 66°F | Chance Rain Showers then Slight Chance Showers And Thunderstorms | 9 to 13 mph NNE | 34% |
| Sunday Night | 57°F | Showers And Thunderstorms Likely | 12 mph NE | 57% |
| Monday | 62°F | Chance Rain Showers | 12 mph NE | 53% |
| Monday Night | 52°F | Chance Rain Showers | 7 to 10 mph NE | 50% |
| Tuesday | 61°F | Partly Sunny | 9 mph ENE | 10% |
| Tuesday Night | 47°F | Partly Cloudy | 2 to 7 mph ENE | 2% |
| Wednesday | 65°F | Sunny | 6 mph ENE | 2% |
| Wednesday Night | 52°F | Partly Cloudy | 3 mph E | 5% |
| Thursday | 67°F | Slight Chance Rain Showers | 2 to 6 mph ESE | 22% |
| Thursday Night | 56°F | Mostly Cloudy | 3 mph ESE | 9% |
| Friday | 68°F | Partly Sunny | 2 to 6 mph ESE | 9% |
| Friday Night | 57°F | Mostly Cloudy | 5 mph ESE | 9% |
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 19, 2026.