Riggston, IL Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Riggston, a community in Morgan County, Illinois.
This Afternoon
71°F
Light Rain
Rain and a chance of thunderstorms. Cloudy. High near 71, with temperatures falling to around 63 in the afternoon. South southeast wind around 20 mph, with gusts as high as 32 mph. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch possible.
7-day forecast for Riggston
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 71°F | Light Rain | 20 mph SSE | 90% |
| Tonight | 51°F | Light Rain Likely | 10 to 17 mph SSW | 73% |
| Wednesday | 59°F | Chance Rain Showers then Mostly Cloudy | 10 to 15 mph WSW | 10% |
| Wednesday Night | 42°F | Mostly Cloudy | 8 mph SW | 0% |
| Thursday | 61°F | Mostly Sunny | 7 to 13 mph WSW | 6% |
| Thursday Night | 41°F | Mostly Cloudy then Slight Chance Light Rain | 6 mph NW | 21% |
| Friday | 56°F | Mostly Cloudy | 6 to 9 mph NNW | 8% |
| Friday Night | 36°F | Mostly Cloudy | 1 to 7 mph NNW | 2% |
| Saturday | 55°F | Mostly Sunny | 3 mph NW | 1% |
| Saturday Night | 34°F | Partly Cloudy | 2 mph WNW | 2% |
| Sunday | 61°F | Sunny | 2 to 7 mph W | 7% |
| Sunday Night | 34°F | Mostly Clear | 5 mph W | 4% |
| Monday | 65°F | Sunny | 2 to 9 mph SW | 2% |
| Monday Night | 39°F | Mostly Clear | 5 mph WSW | 1% |
Forecast source: National Weather Service (api.weather.gov) for Riggston (39.695, -90.423). Updated through the day.
Growing snapshot for Riggston
Last spring frost
Apr 17
First fall frost
Oct 21
Growing season
186 days
Hardiness zone
6a
More local growing data for Riggston: nearby ZIP 62628 weather · frost dates · planting calendar · Illinois frost dates
Nearby towns & communities
Alexander
Chapin
Concord
Franklin
Jacksonville
Lynnville
Meredosia
Merritt
Murrayville
South Jacksonville
Waverly
Woodson
Climate data from the nearest NOAA station, Jacksonville 2, Il (10.3 mi from Riggston). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.