Plano, IL Weather & Growing Conditions
Overnight
64°F
Showers And Thunderstorms Likely
Showers and thunderstorms likely. Some of the storms could produce heavy rain. Cloudy. Low around 64, with temperatures rising to around 66 overnight. East southeast wind around 10 mph. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 64°F | Showers And Thunderstorms Likely | 10 mph ESE | 71% |
| Saturday | 79°F | Showers And Thunderstorms then Showers And Thunderstorms Likely | 5 to 10 mph ESE | 99% |
| Saturday Night | 64°F | Showers And Thunderstorms | 5 to 10 mph E | 96% |
| Sunday | 71°F | Showers And Thunderstorms Likely | 10 to 15 mph NNE | 62% |
| Sunday Night | 56°F | Chance Showers And Thunderstorms | 15 mph NE | 38% |
| Monday | 65°F | Chance Rain Showers | 15 mph ENE | 41% |
| Monday Night | 51°F | Chance Rain Showers then Mostly Cloudy | 10 to 15 mph NE | 28% |
| Tuesday | 64°F | Slight Chance Rain Showers | 15 mph NE | 19% |
| Tuesday Night | 51°F | Mostly Cloudy | 10 to 15 mph NE | 9% |
| Wednesday | 67°F | Mostly Sunny | 10 to 15 mph NNE | 6% |
| Wednesday Night | 52°F | Partly Cloudy | 5 to 10 mph NNE | 1% |
| Thursday | 69°F | Partly Sunny | 5 to 10 mph NNE | 2% |
| Thursday Night | 52°F | Partly Cloudy | 5 to 10 mph NNE | 2% |
| Friday | 72°F | Mostly Sunny | 5 to 10 mph NE | 3% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Plano, IL
Last spring frost
Apr 28
First fall frost
Oct 13
Growing season
166 days
Hardiness zone
5b
Explore more for Plano, IL: full frost dates · planting calendar · Illinois frost dates
Climate data from the nearest NOAA station, Chicago Aurora Muni Ap, Il (6.8 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.