Garrett, IL Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Garrett, a village in Piatt County, Illinois.
This Afternoon
75°F
Chance Light Rain
A chance of rain after 4pm. Mostly cloudy, with a high near 75. South southeast wind 18 to 22 mph, with gusts as high as 35 mph. Chance of precipitation is 30%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast for Garrett
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 75°F | Chance Light Rain | 18 to 22 mph SSE | 31% |
| Tonight | 55°F | Rain | 14 to 20 mph S | 94% |
| Wednesday | 63°F | Chance Light Rain then Mostly Cloudy | 12 to 15 mph SW | 25% |
| Wednesday Night | 43°F | Mostly Cloudy | 10 mph SW | 0% |
| Thursday | 63°F | Mostly Sunny | 9 to 14 mph WSW | 2% |
| Thursday Night | 42°F | Mostly Cloudy | 7 mph WNW | 11% |
| Friday | 56°F | Partly Sunny | 6 to 10 mph NNW | 13% |
| Friday Night | 35°F | Partly Cloudy | 5 to 9 mph NNW | 6% |
| Saturday | 55°F | Mostly Sunny | 5 mph NW | 1% |
| Saturday Night | 32°F | Partly Cloudy | 3 mph W | 1% |
| Sunday | 60°F | Sunny | 3 to 9 mph W | 9% |
| Sunday Night | 32°F | Mostly Clear | 6 mph WNW | 6% |
| Monday | 64°F | Sunny | 5 to 10 mph WSW | 2% |
| Monday Night | 37°F | Mostly Clear | 7 mph WSW | 1% |
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 Nov 3, 2026.