Alexander, IA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Alexander, a city in Franklin County, Iowa.
Tonight
65°F
Patchy Fog
Patchy fog and showers and thunderstorms likely before 1am, then patchy fog and showers and thunderstorms likely between 1am and 2am, then patchy fog and a chance of showers and thunderstorms between 2am and 3am, then patchy fog and showers and thunderstorms likely between 3am and 5am, then a chance of showers and thunderstorms. Some of the storms could produce heavy rain. Cloudy. Low around 65, with temperatures rising to around 67 overnight. Southeast wind 7 to 12 mph, with gusts as high as 20 mph. Chance of precipitation is 70%. New rainfall amounts between three quarters and one inch possible.
7-day forecast for Alexander
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 65°F | Patchy Fog | 7 to 12 mph SE | 71% |
| Saturday | 75°F | Chance Showers And Thunderstorms then Patchy Fog | 8 mph WNW | 40% |
| Saturday Night | 57°F | Slight Chance Showers And Thunderstorms | 12 mph NNE | 22% |
| Sunday | 65°F | Chance Rain Showers | 15 mph NE | 26% |
| Sunday Night | 52°F | Chance Rain Showers | 14 mph ENE | 27% |
| Monday | 60°F | Chance Rain Showers | 14 mph ENE | 53% |
| Monday Night | 47°F | Chance Rain Showers | 7 to 12 mph ENE | 51% |
| Tuesday | 59°F | Slight Chance Rain Showers then Partly Sunny | 6 to 9 mph ENE | 16% |
| Tuesday Night | 45°F | Partly Cloudy | 2 to 6 mph E | 2% |
| Wednesday | 64°F | Sunny | 5 mph ESE | 1% |
| Wednesday Night | 49°F | Partly Cloudy | 2 mph SE | 6% |
| Thursday | 67°F | Slight Chance Rain Showers | 3 mph SSE | 18% |
| Thursday Night | 52°F | Mostly Cloudy | 2 mph SE | 8% |
| Friday | 68°F | Partly Sunny | 5 mph ESE | 8% |
Forecast source: National Weather Service (api.weather.gov) for Alexander (42.804, -93.479). Updated through the day.
Growing snapshot for Alexander
Last spring frost
Apr 29
First fall frost
Oct 9
Growing season
162 days
Hardiness zone
5a
More local growing data for Alexander: nearby ZIP 50420 weather · frost dates · planting calendar · Iowa frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Hampton, Ia (13.4 mi from Alexander). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.