Fairbury, IL Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Fairbury, a city in Livingston County, Illinois.
Today
85°F
Mostly Sunny
Mostly sunny, with a high near 85. South wind around 5 mph.
7-day forecast for Fairbury
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 85°F | Mostly Sunny | 5 mph S | 6% |
| Tonight | 65°F | Partly Cloudy | 0 to 5 mph S | 1% |
| Wednesday | 84°F | Partly Sunny then Chance Showers And Thunderstorms | 5 mph SSW | 33% |
| Wednesday Night | 66°F | Chance Showers And Thunderstorms then Showers And Thunderstorms | 0 to 5 mph WSW | 87% |
| Thursday | 81°F | Showers And Thunderstorms | 0 to 5 mph SSW | 87% |
| Thursday Night | 63°F | Chance Showers And Thunderstorms | 0 to 5 mph SSE | 33% |
| Friday | 83°F | Mostly Sunny | 0 mph | 11% |
| Friday Night | 64°F | Slight Chance Showers And Thunderstorms | 0 mph | 21% |
| Saturday | 86°F | Mostly Sunny | 0 to 5 mph SSW | 12% |
| Saturday Night | 70°F | Mostly Clear | 5 mph SSW | 12% |
| Sunday | 88°F | Sunny | 5 to 10 mph SW | 11% |
| Sunday Night | 71°F | Partly Cloudy then Slight Chance Showers And Thunderstorms | 5 to 10 mph SSW | 21% |
| Monday | 88°F | Slight Chance Showers And Thunderstorms | 5 to 10 mph SSW | 21% |
| Monday Night | 71°F | Chance Showers And Thunderstorms | 5 to 10 mph SW | 30% |
Forecast source: National Weather Service (api.weather.gov) for Fairbury (40.746, -88.516). Updated through the day.
Growing snapshot for Fairbury
Last spring frost
Apr 23
First fall frost
Oct 15
Growing season
174 days
Hardiness zone
6a
More local growing data for Fairbury: nearby ZIP 61739 weather · frost dates · planting calendar · Illinois frost dates
Nearby towns & communities
Campus
Chatsworth
Cornell
Cullom
Dwight
Emington
Flanagan
Forrest
Long Point
Odell
Pontiac
Saunemin
Strawn
Climate data from the nearest NOAA station, Chenoa, Il (10.3 mi from Fairbury). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.