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Beacon, IA Weather & Growing Conditions

Local forecast, frost dates, hardiness zone and planting guidance for Beacon, a city in Mahaska County, Iowa.

Today
84°F
Chance Showers And Thunderstorms then Slight Chance Showers And Thunderstorms
A chance of showers and thunderstorms before 11am, then a slight chance of showers and thunderstorms. Partly sunny. High near 84, with temperatures falling to around 82 in the afternoon. Southwest wind 6 to 9 mph. Chance of precipitation is 50%. New rainfall amounts less than a tenth of an inch possible.

7-day forecast for Beacon

WhenTempForecastWindPrecip
Today 84°F Chance Showers And Thunderstorms then Slight Chance Showers And Thunderstorms 6 to 9 mph SW 52%
Tonight 64°F Chance Showers And Thunderstorms then Showers And Thunderstorms Likely 2 to 7 mph NNW 69%
Sunday 69°F Rain Showers Likely then Chance Showers And Thunderstorms 8 to 12 mph NNE 62%
Sunday Night 59°F Slight Chance Showers And Thunderstorms then Showers And Thunderstorms Likely 13 mph NE 61%
Monday 63°F Rain Showers Likely 13 mph NE 61%
Monday Night 53°F Rain Showers Likely 10 mph NE 56%
Tuesday 61°F Chance Rain Showers then Partly Sunny 9 mph NE 35%
Tuesday Night 47°F Partly Cloudy 3 to 7 mph NE 3%
Wednesday 65°F Sunny 6 mph NE 1%
Wednesday Night 52°F Partly Cloudy 3 mph ENE 3%
Thursday 67°F Partly Sunny 3 mph E 11%
Thursday Night 56°F Partly Cloudy 2 mph E 5%
Friday 69°F Partly Sunny 5 mph E 5%
Friday Night 57°F Mostly Cloudy 3 mph E 7%

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

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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.