Girard, IL Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Girard, a city in Macoupin County, Illinois.
This Afternoon
91°F
Slight Chance Showers And Thunderstorms
A slight chance of showers and thunderstorms after 3pm. Sunny, with a high near 91. Heat index values as high as 100. East wind around 5 mph. Chance of precipitation is 20%.
7-day forecast for Girard
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 91°F | Slight Chance Showers And Thunderstorms | 5 mph E | 23% |
| Tonight | 70°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 | 5 mph SW | 15% |
| Sunday | 89°F | Chance Rain Showers | 2 to 7 mph NW | 40% |
| Sunday Night | 62°F | Chance Showers And Thunderstorms then Showers And Thunderstorms Likely | 6 to 9 mph NE | 63% |
| Monday | 75°F | Showers And Thunderstorms Likely | 6 to 12 mph NE | 63% |
| Monday Night | 56°F | Chance Showers And Thunderstorms | 7 to 12 mph NE | 48% |
| Tuesday | 70°F | Chance Rain Showers then Mostly Cloudy | 10 mph NE | 27% |
| Tuesday Night | 51°F | Mostly Cloudy | 5 to 10 mph N | 4% |
| Wednesday | 73°F | Partly Sunny | 6 to 9 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 Girard (39.447, -89.782). Updated through the day.
Growing snapshot for Girard
Last spring frost
Apr 7
First fall frost
Oct 29
Growing season
205 days
Hardiness zone
6b
More local growing data for Girard: nearby ZIP 62640 weather · frost dates · planting calendar · Illinois frost dates
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Climate data from the nearest NOAA station, Virden, Il (5.7 mi from Girard). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 18, 2026.