Griggsville, IL Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Griggsville, a city in Pike County, Illinois.
Tonight
54°F
Chance Light Rain
A chance of rain before 1am, then a slight chance of drizzle. Cloudy, with a low around 54. Southwest wind around 12 mph, with gusts as high as 23 mph. Chance of precipitation is 40%.
7-day forecast for Griggsville
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 54°F | Chance Light Rain | 12 mph SW | 42% |
| Wednesday | 59°F | Slight Chance Drizzle then Mostly Cloudy | 10 to 16 mph SW | 12% |
| Wednesday Night | 43°F | Partly Cloudy | 9 mph SW | 0% |
| Thursday | 60°F | Mostly Sunny | 8 to 12 mph W | 6% |
| Thursday Night | 42°F | Mostly Cloudy then Slight Chance T-storms | 7 mph NW | 19% |
| Friday | 55°F | Mostly Cloudy | 9 mph N | 7% |
| Friday Night | 37°F | Mostly Cloudy | 1 to 6 mph N | 1% |
| Saturday | 55°F | Mostly Sunny | 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 | 36°F | Mostly Clear | 5 mph W | 4% |
| Monday | 65°F | Sunny | 3 to 9 mph SW | 1% |
| Monday Night | 41°F | Mostly Clear | 5 mph SW | 1% |
| Tuesday | 67°F | Sunny | 5 mph NW | 0% |
Forecast source: National Weather Service (api.weather.gov) for Griggsville (39.708, -90.728). Updated through the day.
Growing snapshot for Griggsville
Last spring frost
Apr 18
First fall frost
Oct 15
Growing season
179 days
Hardiness zone
6a
More local growing data for Griggsville: nearby ZIP 62340 weather · frost dates · planting calendar · Illinois frost dates
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Climate data from the nearest NOAA station, Perry 6 Nw, Il (7.1 mi from Griggsville). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.