Brooklyn, IA Weather & Growing Conditions
Overnight
66°F
Chance Showers And Thunderstorms
A chance of showers and thunderstorms before 5am, then showers and thunderstorms likely. Mostly cloudy, with a low around 66. Southeast wind around 8 mph. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 66°F | Chance Showers And Thunderstorms | 8 mph SE | 59% |
| Saturday | 82°F | Chance Showers And Thunderstorms | 8 mph SSW | 54% |
| Saturday Night | 61°F | Chance Showers And Thunderstorms | 5 to 8 mph NNW | 50% |
| Sunday | 68°F | Showers And Thunderstorms Likely | 8 to 12 mph NNE | 66% |
| Sunday Night | 55°F | Showers And Thunderstorms Likely | 12 mph ENE | 66% |
| Monday | 61°F | Rain Showers Likely | 13 mph ENE | 60% |
| Monday Night | 50°F | Rain Showers Likely | 7 to 12 mph NE | 60% |
| Tuesday | 60°F | Slight Chance Rain Showers then Mostly Cloudy | 9 mph NE | 23% |
| Tuesday Night | 46°F | Partly Cloudy | 3 to 7 mph NE | 5% |
| Wednesday | 65°F | Mostly Sunny | 5 mph NE | 1% |
| Wednesday Night | 50°F | Partly Cloudy | 2 mph ENE | 3% |
| Thursday | 67°F | Partly Sunny | 3 mph E | 11% |
| Thursday Night | 52°F | Partly Cloudy | 1 mph E | 9% |
| Friday | 68°F | Mostly Sunny | 1 to 5 mph E | 7% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Brooklyn, IA
Last spring frost
Apr 28
First fall frost
Oct 10
Growing season
165 days
Hardiness zone
5a
Explore more for Brooklyn, IA: full frost dates · planting calendar · Iowa frost dates
Climate data from the nearest NOAA station, Belle Plaine, Ia (12.5 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.