Brooklyn, IA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Brooklyn, a city in Poweshiek County, Iowa.
Today
84°F
Partly Sunny then Slight Chance Showers And Thunderstorms
A slight chance of showers and thunderstorms after 2pm. Partly sunny. High near 84, with temperatures falling to around 81 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 Brooklyn
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 84°F | Partly Sunny then Slight Chance Showers And Thunderstorms | 6 mph W | 24% |
| Tonight | 62°F | Showers And Thunderstorms | 6 to 9 mph N | 88% |
| Wednesday | 75°F | Showers And Thunderstorms then Chance Showers And Thunderstorms | 3 to 7 mph NNE | 76% |
| Wednesday Night | 56°F | Chance Showers And Thunderstorms | 1 to 5 mph NNE | 45% |
| Thursday | 80°F | Sunny | 2 mph NE | 6% |
| Thursday Night | 58°F | Mostly Clear | 1 mph E | 0% |
| Friday | 84°F | Sunny | 1 to 5 mph SSE | 5% |
| Friday Night | 64°F | Mostly Clear | 5 mph SSE | 14% |
| Saturday | 87°F | Sunny | 6 mph S | 10% |
| Saturday Night | 70°F | Mostly Clear then Slight Chance Showers And Thunderstorms | 6 to 9 mph S | 15% |
| Sunday | 88°F | Slight Chance Showers And Thunderstorms then Mostly Sunny | 9 mph S | 15% |
| Sunday Night | 69°F | Chance Showers And Thunderstorms | 8 mph S | 35% |
| Monday | 88°F | Chance Showers And Thunderstorms then Slight Chance Showers And Thunderstorms | 10 mph S | 35% |
| Monday Night | 69°F | Chance Showers And Thunderstorms | 10 mph ESE | 30% |
Forecast source: National Weather Service (api.weather.gov) for Brooklyn (41.732, -92.445). Updated through the day.
Growing snapshot for Brooklyn
Last spring frost
Apr 28
First fall frost
Oct 10
Growing season
165 days
Hardiness zone
5a
More local growing data for Brooklyn: nearby ZIP 52211 weather · frost dates · planting calendar · Iowa frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Belle Plaine, Ia (12.5 mi from Brooklyn). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.