Amboy, IL Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Amboy, a city in Lee County, Illinois.
Today
84°F
Mostly Sunny
Mostly sunny, with a high near 84. South southwest wind 5 to 10 mph.
7-day forecast for Amboy
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 84°F | Mostly Sunny | 5 to 10 mph SSW | 1% |
| Tonight | 66°F | Chance Showers And Thunderstorms | 0 to 10 mph SSW | 60% |
| Wednesday | 77°F | Showers And Thunderstorms Likely | 0 to 5 mph WSW | 72% |
| Wednesday Night | 62°F | Showers And Thunderstorms | 0 to 5 mph NNE | 83% |
| Thursday | 78°F | Chance Rain Showers then Slight Chance Showers And Thunderstorms | 0 to 5 mph ENE | 52% |
| Thursday Night | 60°F | Slight Chance Showers And Thunderstorms then Mostly Clear | 0 mph | 16% |
| Friday | 81°F | Mostly Sunny | 0 to 5 mph SSE | 8% |
| Friday Night | 63°F | Mostly Clear | 0 to 5 mph S | 9% |
| Saturday | 84°F | Sunny | 5 mph SSW | 9% |
| Saturday Night | 68°F | Mostly Clear then Slight Chance Showers And Thunderstorms | 5 to 10 mph SSW | 18% |
| Sunday | 86°F | Slight Chance Showers And Thunderstorms then Mostly Sunny | 10 to 15 mph SSW | 18% |
| Sunday Night | 69°F | Chance Showers And Thunderstorms | 5 to 10 mph S | 34% |
| Monday | 85°F | Chance Showers And Thunderstorms | 5 to 10 mph SSW | 34% |
| Monday Night | 68°F | Chance Showers And Thunderstorms | 10 mph W | 40% |
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 Aug 4, 2026.