Polk City, IA Weather & Growing Conditions
Tonight
62°F
Chance Showers And Thunderstorms
A chance of showers and thunderstorms before 1am, then showers and thunderstorms likely. Mostly cloudy. Low around 62, with temperatures rising to around 64 overnight. North wind around 9 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 62°F | Chance Showers And Thunderstorms | 9 mph N | 55% |
| Sunday | 65°F | Chance Rain Showers then Chance Drizzle | 13 mph NE | 38% |
| Sunday Night | 57°F | Rain Showers Likely | 13 mph NE | 63% |
| Monday | 59°F | Rain Showers | 12 mph NE | 84% |
| 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 | 3 to 7 mph NE | 2% |
| Wednesday | 64°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 | 23% |
| Thursday Night | 58°F | Slight Chance Rain Showers | 3 mph ESE | 22% |
| Friday | 69°F | Slight Chance Rain Showers | 2 to 6 mph ESE | 20% |
| Friday Night | 59°F | Mostly Cloudy | 5 mph ESE | 10% |
| Saturday | 69°F | Chance Rain Showers | 3 to 8 mph SE | 31% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Polk City, IA
Last spring frost
Apr 19
First fall frost
Oct 18
Growing season
179 days
Hardiness zone
5b
Explore more for Polk City, IA: full frost dates · planting calendar · Iowa frost dates
Climate data from the nearest NOAA station, Des Moines Wsfo-Johnston, Ia (4.3 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 20, 2026.