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
82°F
Showers And Thunderstorms
Showers and thunderstorms. Partly sunny. High near 82, with temperatures falling to around 80 in the afternoon. West wind 5 to 10 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch possible.
7-day forecast for Polk City
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 82°F | Showers And Thunderstorms | 5 to 10 mph W | 78% |
| Tonight | 63°F | Showers And Thunderstorms | 7 to 10 mph NNE | 91% |
| Wednesday | 73°F | Showers And Thunderstorms Likely then Chance Showers And Thunderstorms | 7 mph NE | 61% |
| Wednesday Night | 57°F | Slight Chance Rain Showers | 1 to 6 mph NE | 23% |
| Thursday | 81°F | Sunny | 1 to 5 mph ENE | 2% |
| Thursday Night | 61°F | Mostly Clear | 3 mph SE | 2% |
| Friday | 85°F | Sunny | 2 to 8 mph S | 6% |
| Friday Night | 67°F | Mostly Clear | 3 to 7 mph SSE | 12% |
| Saturday | 89°F | Sunny | 2 to 9 mph S | 12% |
| Saturday Night | 73°F | Mostly Clear | 12 mph SSW | 12% |
| Sunday | 90°F | Sunny | 8 to 12 mph S | 12% |
| Sunday Night | 72°F | Slight Chance Showers And Thunderstorms | 10 mph SSE | 28% |
| Monday | 90°F | Chance Showers And Thunderstorms then Mostly Sunny | 8 to 13 mph S | 28% |
| Monday Night | 72°F | Slight Chance Showers And Thunderstorms | 9 to 13 mph ESE | 22% |
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 Aug 4, 2026.