Evanston, IL Weather & Growing Conditions
Overnight
63°F
Showers And Thunderstorms Likely
Showers and thunderstorms likely before 5am, then showers and thunderstorms. Some of the storms could produce heavy rain. Cloudy. Low around 63, with temperatures rising to around 65 overnight. East southeast wind around 15 mph. Chance of precipitation is 90%. New rainfall amounts between a half and three quarters of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 63°F | Showers And Thunderstorms Likely | 15 mph ESE | 87% |
| Saturday | 74°F | Showers And Thunderstorms then Showers And Thunderstorms Likely | 5 to 15 mph SE | 100% |
| Saturday Night | 63°F | Showers And Thunderstorms | 5 to 15 mph ESE | 94% |
| Sunday | 69°F | Showers And Thunderstorms Likely | 15 to 25 mph NNE | 60% |
| Sunday Night | 58°F | Slight Chance Rain Showers | 20 to 25 mph NE | 19% |
| Monday | 66°F | Slight Chance Rain Showers | 20 to 25 mph ENE | 23% |
| Monday Night | 55°F | Slight Chance Rain Showers then Mostly Cloudy | 20 mph ENE | 16% |
| Tuesday | 65°F | Mostly Cloudy | 20 mph NE | 14% |
| Tuesday Night | 56°F | Mostly Cloudy | 10 to 20 mph NE | 11% |
| Wednesday | 64°F | Slight Chance Rain Showers | 10 to 15 mph NE | 15% |
| Wednesday Night | 57°F | Mostly Cloudy | 5 to 15 mph NE | 7% |
| Thursday | 65°F | Partly Sunny | 10 mph NNE | 3% |
| Thursday Night | 58°F | Mostly Cloudy | 5 to 10 mph NE | 3% |
| Friday | 67°F | Partly Sunny | 5 to 10 mph NE | 4% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Evanston, IL
Last spring frost
Apr 26
First fall frost
Oct 21
Growing season
176 days
Hardiness zone
6a
Explore more for Evanston, IL: full frost dates · planting calendar · Illinois frost dates
Climate data from the nearest NOAA station, Chicago Botanic Garden, Il (7.6 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.