Garrett, IL Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Garrett, a village in Piatt County, Illinois.
This Afternoon
86°F
Chance Showers And Thunderstorms
A chance of showers and thunderstorms before 5pm, then a slight chance of showers and thunderstorms. Mostly sunny, with a high near 86. Northeast wind around 10 mph. Chance of precipitation is 40%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast for Garrett
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 86°F | Chance Showers And Thunderstorms | 10 mph NE | 41% |
| Tonight | 69°F | Partly Cloudy | 7 to 10 mph ESE | 11% |
| Saturday | 91°F | Chance Showers And Thunderstorms | 10 mph SSW | 32% |
| Saturday Night | 69°F | Slight Chance Showers And Thunderstorms | 8 mph S | 18% |
| Sunday | 86°F | Chance Showers And Thunderstorms | 5 to 10 mph NW | 35% |
| Sunday Night | 60°F | Chance Showers And Thunderstorms | 13 mph NE | 64% |
| Monday | 72°F | Showers And Thunderstorms Likely | 12 to 15 mph NE | 69% |
| Monday Night | 54°F | Showers And Thunderstorms Likely | 10 to 16 mph NE | 58% |
| Tuesday | 69°F | Chance Showers And Thunderstorms | 14 mph NE | 33% |
| Tuesday Night | 52°F | Mostly Cloudy | 7 to 14 mph NNE | 9% |
| Wednesday | 71°F | Partly Sunny | 10 mph NNE | 3% |
| Wednesday Night | 53°F | Partly Cloudy | 5 to 9 mph NNE | 3% |
| Thursday | 72°F | Mostly Sunny | 6 to 9 mph NNE | 3% |
| Thursday Night | 54°F | Partly Cloudy | 5 to 8 mph NNE | 4% |
Forecast source: National Weather Service (api.weather.gov) for Garrett (39.797, -88.425). Updated through the day.
Growing snapshot for Garrett
Last spring frost
Apr 15
First fall frost
Oct 20
Growing season
188 days
Hardiness zone
6a
More local growing data for Garrett: nearby ZIP 61913 weather · frost dates · planting calendar · Illinois frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Tuscola, Il (9.8 mi from Garrett). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 18, 2026.