Griggsville, IL Weather & Growing Conditions
Overnight
52°F
Slight Chance Light Rain
A slight chance of rain before 1am, then a slight chance of drizzle. Mostly cloudy, with a low around 52. Southwest wind around 12 mph, with gusts as high as 24 mph. Chance of precipitation is 20%.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 52°F | Slight Chance Light Rain | 12 mph SW | 19% |
| Wednesday | 58°F | Slight Chance Drizzle then Mostly Cloudy | 12 to 16 mph SW | 12% |
| Wednesday Night | 43°F | Partly Cloudy | 9 mph SW | 1% |
| Thursday | 59°F | Partly Sunny | 8 to 13 mph W | 6% |
| Thursday Night | 42°F | Mostly Cloudy then Slight Chance T-storms | 3 to 7 mph NW | 19% |
| Friday | 56°F | Mostly Cloudy | 6 to 9 mph N | 7% |
| Friday Night | 36°F | Mostly Cloudy | 0 to 6 mph N | 1% |
| Saturday | 55°F | Mostly Sunny | 0 to 3 mph NW | 1% |
| Saturday Night | 35°F | Mostly Clear | 2 mph W | 1% |
| Sunday | 61°F | Sunny | 2 to 7 mph W | 8% |
| Sunday Night | 35°F | Mostly Clear | 5 mph W | 4% |
| Monday | 65°F | Sunny | 2 to 9 mph SW | 1% |
| Monday Night | 40°F | Mostly Clear | 5 mph SW | 1% |
| Tuesday | 67°F | Sunny | 5 mph NW | 0% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Griggsville, IL
Last spring frost
Apr 18
First fall frost
Oct 15
Growing season
179 days
Hardiness zone
6a
Explore more for Griggsville, IL: full frost dates · planting calendar · Illinois frost dates
Climate data from the nearest NOAA station, Perry 6 Nw, Il (7.1 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.