Dover, IL Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Dover, a village in Bureau County, Illinois.
Overnight
65°F
Slight Chance Showers And Thunderstorms
A slight chance of showers and thunderstorms before 4am, then patchy fog and a chance of showers and thunderstorms. Mostly cloudy. Low around 65, with temperatures rising to around 67 overnight. Southeast wind around 10 mph. Chance of precipitation is 40%.
7-day forecast for Dover
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 65°F | Slight Chance Showers And Thunderstorms | 10 mph SE | 43% |
| Saturday | 80°F | Patchy Fog | 5 to 10 mph SE | 80% |
| Saturday Night | 65°F | Chance Showers And Thunderstorms then Showers And Thunderstorms | 5 to 10 mph SW | 92% |
| Sunday | 71°F | Patchy Fog | 10 to 15 mph NE | 80% |
| Sunday Night | 57°F | Chance Showers And Thunderstorms | 15 mph NE | 45% |
| Monday | 65°F | Rain Showers Likely | 15 mph NE | 60% |
| Monday Night | 52°F | Chance Rain Showers | 10 to 15 mph NE | 36% |
| Tuesday | 63°F | Slight Chance Rain Showers | 15 mph NE | 18% |
| Tuesday Night | 50°F | Partly Cloudy | 10 to 15 mph NE | 12% |
| Wednesday | 67°F | Mostly Sunny | 10 mph NE | 3% |
| Wednesday Night | 52°F | Partly Cloudy | 5 to 10 mph NE | 1% |
| Thursday | 68°F | Mostly Sunny | 5 mph NE | 4% |
| Thursday Night | 52°F | Partly Cloudy | 5 mph NE | 4% |
| Friday | 72°F | Mostly Sunny | 5 mph NE | 2% |
Forecast source: National Weather Service (api.weather.gov) for Dover (41.434, -89.396). Updated through the day.
Growing snapshot for Dover
Last spring frost
Apr 22
First fall frost
Oct 17
Growing season
177 days
More local growing data for Dover: nearby ZIP 61323 weather · frost dates · planting calendar · Illinois frost dates
Nearby towns & communities
Arlington
Buda
Bureau Junction
Cherry
Dalzell
De Pue
Hollowayville
La Moille
Ladd
Malden
Manlius
Mineral
Neponset
New Bedford
Ohio
Princeton
Seatonville
Sheffield
Spring Valley
Tiskilwa
Walnut
Wyanet
Climate data from the nearest NOAA station, Princeton, Il (5.6 mi from Dover). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.