Allison, IA Weather & Growing Conditions
Tonight
46°F
Chance Rain Showers
A chance of rain showers. Cloudy. Low around 46, with temperatures rising to around 50 overnight. West southwest wind 6 to 9 mph. Chance of precipitation is 50%. New rainfall amounts between a tenth and quarter of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 46°F | Chance Rain Showers | 6 to 9 mph WSW | 54% |
| Wednesday | 52°F | Rain Showers Likely | 10 to 17 mph WSW | 57% |
| Wednesday Night | 42°F | Rain Showers Likely | 10 to 14 mph W | 58% |
| Thursday | 51°F | Rain Showers Likely | 13 mph NW | 69% |
| Thursday Night | 37°F | Slight Chance Rain Showers then Mostly Cloudy | 7 to 10 mph N | 17% |
| Friday | 48°F | Partly Sunny | 3 to 8 mph N | 2% |
| Friday Night | 30°F | Partly Cloudy | 2 mph NNW | 1% |
| Saturday | 53°F | Mostly Sunny | 0 to 5 mph WSW | 2% |
| Saturday Night | 35°F | Mostly Clear | 5 mph W | 4% |
| Sunday | 58°F | Sunny | 7 mph WNW | 6% |
| Sunday Night | 36°F | Mostly Clear | 6 mph SW | 2% |
| Monday | 61°F | Mostly Sunny | 6 to 10 mph SW | 0% |
| Monday Night | 39°F | Mostly Clear | 6 mph WNW | 0% |
| Tuesday | 59°F | Mostly Sunny | 6 mph WNW | 1% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Allison, IA
Last spring frost
Apr 27
First fall frost
Oct 8
Growing season
165 days
Hardiness zone
5a
Explore more for Allison, IA: full frost dates · planting calendar · Iowa frost dates
Climate data from the nearest NOAA station, Allison, Ia (0.9 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.