Beacon, IA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Beacon, a city in Mahaska County, Iowa.
Overnight
70°F
Chance Showers And Thunderstorms
A chance of showers and thunderstorms before 3am, then patchy fog and a chance of showers and thunderstorms between 3am and 4am, then patchy fog and a chance of showers and thunderstorms. Mostly cloudy, with a low around 70. South southeast wind around 9 mph. Chance of precipitation is 40%. New rainfall amounts between a tenth and quarter of an inch possible.
7-day forecast for Beacon
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 70°F | Chance Showers And Thunderstorms | 9 mph SSE | 40% |
| Saturday | 85°F | Chance Showers And Thunderstorms | 8 mph SSW | 43% |
| Saturday Night | 65°F | Chance Showers And Thunderstorms then Showers And Thunderstorms Likely | 7 mph NNW | 72% |
| Sunday | 70°F | Showers And Thunderstorms Likely | 8 to 12 mph NNE | 70% |
| Sunday Night | 59°F | Showers And Thunderstorms Likely | 12 mph NE | 70% |
| Monday | 63°F | Rain Showers Likely | 12 mph ENE | 60% |
| Monday Night | 53°F | Rain Showers Likely | 10 mph NE | 60% |
| Tuesday | 61°F | Slight Chance Rain Showers then Mostly Cloudy | 9 mph NE | 24% |
| Tuesday Night | 49°F | Partly Cloudy | 3 to 7 mph NE | 5% |
| Wednesday | 66°F | Mostly Sunny | 5 mph NE | 1% |
| Wednesday Night | 53°F | Partly Cloudy | 3 mph ENE | 3% |
| Thursday | 68°F | Partly Sunny | 3 mph E | 8% |
| Thursday Night | 55°F | Mostly Cloudy | 2 mph E | 8% |
| Friday | 69°F | Slight Chance Rain Showers | 5 mph E | 15% |
Forecast source: National Weather Service (api.weather.gov) for Beacon (41.276, -92.681). Updated through the day.
Growing snapshot for Beacon
Last spring frost
Apr 21
First fall frost
Oct 16
Growing season
176 days
Hardiness zone
5b
More local growing data for Beacon: nearby ZIP 52534 weather · frost dates · planting calendar · Iowa frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Oskaloosa, Ia (3.8 mi from Beacon). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.