Alexander, IL Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Alexander, a community in Morgan County, Illinois.
Today
88°F
Sunny
Sunny, with a high near 88. South wind around 7 mph.
7-day forecast for Alexander
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 88°F | Sunny | 7 mph S | 0% |
| Tonight | 68°F | Partly Cloudy | 6 mph SSE | 1% |
| Wednesday | 87°F | Slight Chance Rain Showers then Slight Chance Showers And Thunderstorms | 8 mph S | 24% |
| Wednesday Night | 67°F | Chance Showers And Thunderstorms | 6 mph SSE | 79% |
| Thursday | 83°F | Showers And Thunderstorms | 6 mph SSW | 79% |
| Thursday Night | 65°F | Slight Chance Showers And Thunderstorms | 3 mph SSE | 17% |
| Friday | 85°F | Partly Sunny | 3 mph SSW | 7% |
| Friday Night | 66°F | Chance Showers And Thunderstorms | 3 mph S | 25% |
| Saturday | 87°F | Chance Showers And Thunderstorms then Mostly Sunny | 6 mph SSW | 25% |
| Saturday Night | 70°F | Mostly Clear | 5 to 9 mph S | 9% |
| Sunday | 90°F | Sunny | 9 to 13 mph SSW | 4% |
| Sunday Night | 72°F | Mostly Clear | 12 mph S | 11% |
| Monday | 90°F | Mostly Sunny | 10 mph SSW | 11% |
| Monday Night | 73°F | Slight Chance Showers And Thunderstorms | 9 mph SSW | 23% |
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 Aug 4, 2026.