Beacon, IA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Beacon, a city in Mahaska County, Iowa.
This Afternoon
71°F
Showers And Thunderstorms
Showers and thunderstorms. Mostly cloudy. High near 71, with temperatures falling to around 64 in the afternoon. South wind around 12 mph, with gusts as high as 21 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch possible.
7-day forecast for Beacon
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 71°F | Showers And Thunderstorms | 12 mph S | 84% |
| Tonight | 48°F | Chance Rain Showers | 7 to 12 mph SW | 36% |
| Wednesday | 54°F | Mostly Cloudy then Slight Chance Rain Showers | 12 to 15 mph W | 21% |
| Wednesday Night | 44°F | Mostly Cloudy | 10 mph WSW | 5% |
| Thursday | 54°F | Chance Rain Showers | 10 mph WNW | 45% |
| Thursday Night | 41°F | Chance Rain Showers then Mostly Cloudy | 7 mph NNW | 25% |
| Friday | 53°F | Partly Sunny | 5 to 8 mph N | 6% |
| Friday Night | 35°F | Partly Cloudy | 0 to 3 mph NNW | 1% |
| Saturday | 56°F | Partly Sunny | 0 to 3 mph WSW | 1% |
| Saturday Night | 37°F | Mostly Clear | 1 to 5 mph W | 3% |
| Sunday | 62°F | Sunny | 6 mph W | 6% |
| Sunday Night | 38°F | Mostly Clear | 5 mph WSW | 2% |
| Monday | 66°F | Sunny | 5 to 9 mph SW | 0% |
| Monday Night | 41°F | Mostly Clear | 5 mph W | 0% |
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 Nov 3, 2026.