Amboy, IL Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Amboy, a city in Lee County, Illinois.
This Afternoon
67°F
Rain
Rain and a slight chance of thunderstorms. Cloudy, with a high near 67. South southeast wind 15 to 20 mph, with gusts as high as 35 mph. Chance of precipitation is 80%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast for Amboy
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 67°F | Rain | 15 to 20 mph SSE | 83% |
| Tonight | 55°F | Rain | 15 mph S | 87% |
| Wednesday | 59°F | Chance Rain then Mostly Cloudy | 15 mph SSW | 34% |
| Wednesday Night | 46°F | Slight Chance Rain | 15 mph SW | 23% |
| Thursday | 55°F | Chance Rain | 10 to 15 mph WSW | 50% |
| Thursday Night | 41°F | Chance Rain | 5 to 10 mph NW | 36% |
| Friday | 51°F | Slight Chance Rain then Partly Sunny | 5 to 10 mph N | 16% |
| Friday Night | 33°F | Partly Cloudy | 0 to 5 mph NNW | 2% |
| Saturday | 52°F | Mostly Sunny | 0 to 5 mph WNW | 2% |
| Saturday Night | 34°F | Partly Cloudy | 0 mph | 4% |
| Sunday | 57°F | Mostly Sunny | 5 to 10 mph W | 12% |
| Sunday Night | 35°F | Mostly Clear | 0 to 5 mph W | 5% |
| Monday | 62°F | Sunny | 5 to 10 mph SW | 2% |
| Monday Night | 39°F | Mostly Clear | 5 mph W | 0% |
Forecast source: National Weather Service (api.weather.gov) for Amboy (41.716, -89.341). Updated through the day.
Growing snapshot for Amboy
Last spring frost
Apr 21
First fall frost
Oct 19
Growing season
180 days
Hardiness zone
5b
More local growing data for Amboy: nearby ZIP 61310 weather · frost dates · planting calendar · Illinois frost dates
Nearby towns & communities
Ashton
Compton
Dixon
Franklin Grove
Grand Detour
Harmon
Lee
Lee Center
Lost Nation
Nachusa
Nelson
Paw Paw
Steward
Sublette
West Brooklyn
Climate data from the nearest NOAA station, Dixon 1W, Il (12.3 mi from Amboy). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 3, 2026.