Evanston, IL Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Evanston, a city in Cook County, Illinois.
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 for Evanston
| 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) for Evanston (42.046, -87.694). Updated through the day.
Growing snapshot for Evanston
Last spring frost
Apr 26
First fall frost
Oct 21
Growing season
176 days
Hardiness zone
6a
More local growing data for Evanston: nearby ZIP 60201 weather · frost dates · planting calendar · Illinois frost dates
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Climate data from the nearest NOAA station, Chicago Botanic Garden, Il (7.6 mi from Evanston). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.