Alexander, IL Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Alexander, a community in Morgan County, Illinois.
Tonight
52°F
Rain
Rain before 2am, then a slight chance of rain showers between 2am and 4am. Cloudy, with a low around 52. South southwest wind 10 to 16 mph, with gusts as high as 23 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.
7-day forecast for Alexander
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 52°F | Rain | 10 to 16 mph SSW | 90% |
| Wednesday | 59°F | Mostly Cloudy | 13 to 16 mph WSW | 10% |
| Wednesday Night | 42°F | Mostly Cloudy | 10 mph WSW | 1% |
| Thursday | 61°F | Mostly Sunny | 9 to 13 mph WSW | 5% |
| Thursday Night | 41°F | Mostly Cloudy then Slight Chance Light Rain | 7 mph NW | 22% |
| Friday | 56°F | Mostly Cloudy | 7 to 10 mph NNW | 12% |
| Friday Night | 35°F | Mostly Cloudy | 1 to 8 mph NNW | 2% |
| Saturday | 54°F | Mostly Sunny | 3 mph NW | 1% |
| Saturday Night | 34°F | Partly Cloudy | 2 mph W | 1% |
| Sunday | 60°F | Sunny | 2 to 8 mph W | 7% |
| Sunday Night | 34°F | Mostly Clear | 6 mph W | 4% |
| Monday | 64°F | Sunny | 3 to 10 mph SW | 2% |
| Monday Night | 39°F | Mostly Clear | 6 mph WSW | 1% |
| Tuesday | 66°F | Sunny | 6 mph WNW | 1% |
Forecast source: National Weather Service (api.weather.gov) for Alexander (39.722, -90.037). Updated through the day.
Growing snapshot for Alexander
Last spring frost
Apr 19
First fall frost
Oct 17
Growing season
179 days
Hardiness zone
6a
More local growing data for Alexander: nearby ZIP 62601 weather · frost dates · planting calendar · Illinois frost dates
Nearby towns & communities
Chapin
Concord
Franklin
Jacksonville
Lynnville
Meredosia
Merritt
Murrayville
Riggston
South Jacksonville
Waverly
Woodson
Climate data from the nearest NOAA station, Jacksonville 2E, Il (8.5 mi from Alexander). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.