Amboy, IL Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Amboy, a city in Lee County, Illinois.
Overnight
64°F
Chance Showers And Thunderstorms
A chance of showers and thunderstorms before 4am, then showers and thunderstorms. Cloudy, with a low around 64. East southeast wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
7-day forecast for Amboy
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 64°F | Chance Showers And Thunderstorms | 10 mph ESE | 84% |
| Saturday | 80°F | Showers And Thunderstorms then Showers And Thunderstorms Likely | 5 to 10 mph SE | 94% |
| Saturday Night | 63°F | Showers And Thunderstorms | 5 mph NE | 96% |
| Sunday | 70°F | Showers And Thunderstorms Likely | 10 to 15 mph NNE | 62% |
| Sunday Night | 55°F | Chance Showers And Thunderstorms | 15 mph NE | 40% |
| Monday | 65°F | Chance Rain Showers | 15 mph ENE | 49% |
| Monday Night | 50°F | Slight Chance Rain Showers | 10 to 15 mph NE | 23% |
| Tuesday | 63°F | Slight Chance Rain Showers | 10 to 15 mph NE | 18% |
| Tuesday Night | 48°F | Partly Cloudy | 5 to 15 mph NE | 10% |
| Wednesday | 67°F | Mostly Sunny | 5 to 10 mph NE | 2% |
| Wednesday Night | 50°F | Partly Cloudy | 5 to 10 mph NE | 1% |
| Thursday | 68°F | Mostly Sunny | 5 mph NNE | 4% |
| Thursday Night | 51°F | Partly Cloudy | 0 to 5 mph NE | 4% |
| Friday | 72°F | Mostly Sunny | 5 mph NE | 2% |
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 Sep 19, 2026.