Washington, IL Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Washington, a city in Tazewell County, Illinois.
This Afternoon
82°F
Cloudy
Cloudy, with a high near 82. South wind around 8 mph.
7-day forecast for Washington
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 82°F | Cloudy | 8 mph S | 13% |
| Tonight | 68°F | Mostly Cloudy then Chance Showers And Thunderstorms | 7 mph SSW | 34% |
| Sunday | 75°F | Chance Showers And Thunderstorms | 6 to 13 mph NNE | 50% |
| Sunday Night | 58°F | Chance Showers And Thunderstorms | 14 mph NE | 45% |
| Monday | 65°F | Rain Showers Likely | 15 mph ENE | 68% |
| Monday Night | 54°F | Chance Rain Showers | 15 mph ENE | 54% |
| Tuesday | 64°F | Chance Rain Showers | 14 mph NE | 53% |
| Tuesday Night | 52°F | Mostly Cloudy | 7 to 13 mph NE | 12% |
| Wednesday | 66°F | Partly Sunny | 10 mph NNE | 2% |
| Wednesday Night | 53°F | Partly Cloudy | 3 to 9 mph NNE | 2% |
| Thursday | 69°F | Mostly Sunny | 7 mph NNE | 2% |
| Thursday Night | 56°F | Slight Chance Rain Showers | 2 to 6 mph NE | 15% |
| Friday | 73°F | Partly Sunny | 3 to 7 mph NE | 9% |
| Friday Night | 55°F | Partly Cloudy | 6 mph NE | 7% |
Forecast source: National Weather Service (api.weather.gov) for Washington (40.706, -89.433). Updated through the day.
Growing snapshot for Washington
Last spring frost
Apr 21
First fall frost
Oct 17
Growing season
178 days
Hardiness zone
6a
More local growing data for Washington: nearby ZIP 61571 weather · frost dates · planting calendar · Illinois frost dates
Nearby towns & communities
Armington
Creve Coeur
Deer Creek
Delavan
East Peoria
Green Valley
Heritage Lake
Hopedale
Mackinaw
Manito
Marquette Heights
Minier
Morton
North Pekin
Pekin
South Pekin
Tremont
Climate data from the nearest NOAA station, Congerville 2Nw, Il (11.2 mi from Washington). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.