Allerton, IA Weather & Growing Conditions
Tonight
46°F
Cloudy
Cloudy. Low around 46, with temperatures rising to around 48 overnight. West wind around 13 mph, with gusts as high as 22 mph. New rainfall amounts less than a tenth of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 46°F | Cloudy | 13 mph W | 14% |
| Wednesday | 53°F | Mostly Cloudy | 13 to 17 mph W | 11% |
| Wednesday Night | 42°F | Mostly Cloudy | 10 mph WSW | 3% |
| Thursday | 53°F | Mostly Cloudy then Chance Rain Showers | 7 to 12 mph WNW | 29% |
| Thursday Night | 41°F | Slight Chance Rain Showers then Mostly Cloudy | 8 mph NNW | 15% |
| Friday | 52°F | Partly Sunny | 3 to 8 mph N | 6% |
| Friday Night | 35°F | Mostly Cloudy | 2 mph NNW | 0% |
| Saturday | 55°F | Partly Sunny | 1 to 5 mph WSW | 2% |
| Saturday Night | 37°F | Mostly Clear | 3 mph W | 5% |
| Sunday | 61°F | Sunny | 6 mph W | 3% |
| Sunday Night | 38°F | Mostly Clear | 6 mph SW | 0% |
| Monday | 65°F | Sunny | 6 to 12 mph SW | 0% |
| Monday Night | 42°F | Mostly Clear | 5 mph WNW | 0% |
| Tuesday | 65°F | Mostly Sunny | 6 mph NNW | 0% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Allerton, IA
Last spring frost
Apr 21
First fall frost
Oct 19
Growing season
178 days
Hardiness zone
5b
Explore more for Allerton, IA: full frost dates · planting calendar · Iowa frost dates
Climate data from the nearest NOAA station, Allerton, Ia (2.3 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.