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Allison, IA Weather & Growing Conditions

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

This Afternoon
72°F
Chance Showers And Thunderstorms
A chance of showers and thunderstorms before 4pm, then a chance of showers and thunderstorms. Mostly cloudy. High near 72, with temperatures falling to around 69 in the afternoon. Northeast wind around 6 mph. Chance of precipitation is 50%. New rainfall amounts less than a tenth of an inch possible.

7-day forecast for Allison

WhenTempForecastWindPrecip
This Afternoon 72°F Chance Showers And Thunderstorms 6 mph NE 54%
Tonight 58°F Chance Showers And Thunderstorms 7 to 13 mph N 33%
Sunday 66°F Chance Rain Showers then Chance Drizzle 15 mph NE 35%
Sunday Night 52°F Slight Chance Drizzle then Chance Rain Showers 14 mph ENE 44%
Monday 59°F Rain Showers Likely 14 mph NE 71%
Monday Night 47°F Rain Showers Likely 7 to 12 mph NE 71%
Tuesday 60°F Chance Rain Showers then Partly Sunny 9 mph ENE 26%
Tuesday Night 45°F Partly Cloudy 3 to 7 mph ENE 2%
Wednesday 64°F Mostly Sunny 6 mph ENE 0%
Wednesday Night 49°F Partly Cloudy 3 mph E 5%
Thursday 66°F Slight Chance Rain Showers 3 mph SE 19%
Thursday Night 53°F Slight Chance Rain Showers 3 mph ESE 22%
Friday 69°F Slight Chance Rain Showers 5 mph ESE 15%
Friday Night 55°F Mostly Cloudy 3 mph ESE 8%

Forecast source: National Weather Service (api.weather.gov) for Allison (42.752, -92.796). Updated through the day.

Growing snapshot for Allison

Last spring frost
Apr 27
First fall frost
Oct 8
Growing season
165 days
Hardiness zone
5a

More local growing data for Allison: nearby ZIP 50602 weather · frost dates · planting calendar · Iowa frost dates

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Climate data from the nearest NOAA station, Allison, Ia (0.9 mi from Allison). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.