Nilwood, IL Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Nilwood, a town in Macoupin County, Illinois.
This Afternoon
92°F
Slight Chance Showers And Thunderstorms
A slight chance of showers and thunderstorms. Sunny, with a high near 92. Heat index values as high as 101. East wind around 5 mph. Chance of precipitation is 20%.
7-day forecast for Nilwood
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 92°F | Slight Chance Showers And Thunderstorms | 5 mph E | 23% |
| Tonight | 69°F | Slight Chance Showers And Thunderstorms then Partly Cloudy | 6 mph SE | 20% |
| Saturday | 95°F | Mostly Sunny | 7 mph SW | 7% |
| Saturday Night | 69°F | Partly Cloudy | 3 mph SW | 14% |
| Sunday | 89°F | Chance Rain Showers | 2 to 7 mph NW | 38% |
| Sunday Night | 62°F | Chance Showers And Thunderstorms then Showers And Thunderstorms Likely | 8 mph NE | 63% |
| Monday | 75°F | Showers And Thunderstorms Likely | 7 to 12 mph NE | 63% |
| Monday Night | 56°F | Chance Showers And Thunderstorms | 7 to 12 mph NE | 49% |
| Tuesday | 70°F | Chance Rain Showers then Mostly Cloudy | 10 mph NE | 26% |
| Tuesday Night | 51°F | Mostly Cloudy | 3 to 10 mph N | 4% |
| Wednesday | 73°F | Mostly Sunny | 8 mph N | 1% |
| Wednesday Night | 52°F | Partly Cloudy | 2 to 7 mph N | 1% |
| Thursday | 74°F | Mostly Sunny | 3 to 7 mph N | 3% |
| Thursday Night | 55°F | Partly Cloudy | 2 to 6 mph NE | 4% |
Forecast source: National Weather Service (api.weather.gov) for Nilwood (39.400, -89.808). Updated through the day.
Growing snapshot for Nilwood
Last spring frost
Apr 7
First fall frost
Oct 29
Growing season
205 days
Hardiness zone
6b
More local growing data for Nilwood: nearby ZIP 62672 weather · frost dates · planting calendar · Illinois frost dates
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Climate data from the nearest NOAA station, Virden, Il (7.7 mi from Nilwood). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.