Allison, IA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Allison, a city in Butler County, Iowa.
Overnight
64°F
Patchy Fog
Patchy fog and showers and thunderstorms likely before 5am, then patchy fog and a chance of showers and thunderstorms. Cloudy. Low around 64, with temperatures rising to around 66 overnight. East southeast wind around 8 mph. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.
7-day forecast for Allison
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 64°F | Patchy Fog | 8 mph ESE | 65% |
| Saturday | 76°F | Patchy Fog | 9 mph SW | 61% |
| Saturday Night | 58°F | Chance Showers And Thunderstorms | 12 mph N | 32% |
| Sunday | 66°F | Chance Rain Showers then Chance Drizzle | 13 to 16 mph NE | 31% |
| Sunday Night | 52°F | Chance Rain Showers | 13 mph ENE | 31% |
| Monday | 61°F | Chance Rain Showers | 14 mph ENE | 45% |
| Monday Night | 47°F | Chance Rain Showers | 7 to 12 mph ENE | 39% |
| Tuesday | 60°F | Mostly Sunny | 9 mph ENE | 14% |
| Tuesday Night | 43°F | Partly Cloudy | 6 mph ENE | 2% |
| Wednesday | 65°F | Sunny | 6 mph E | 1% |
| Wednesday Night | 48°F | Partly Cloudy | 3 mph E | 5% |
| Thursday | 66°F | Partly Sunny | 5 mph ESE | 9% |
| Thursday Night | 51°F | Partly Cloudy | 2 mph ESE | 4% |
| Friday | 68°F | Mostly Sunny | 2 to 6 mph ESE | 4% |
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
Nearby towns & communities
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.