Riggston, IL Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Riggston, a community in Morgan County, Illinois.
This Afternoon
92°F
Mostly Cloudy
Mostly cloudy, with a high near 92. Southwest wind around 7 mph.
7-day forecast for Riggston
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 92°F | Mostly Cloudy | 7 mph SW | 7% |
| Tonight | 69°F | Mostly Cloudy | 6 mph SSW | 10% |
| Sunday | 85°F | Chance Showers And Thunderstorms | 5 to 10 mph NNW | 45% |
| Sunday Night | 61°F | Chance Showers And Thunderstorms | 7 to 13 mph NE | 70% |
| Monday | 71°F | Showers And Thunderstorms Likely | 10 mph NE | 72% |
| Monday Night | 56°F | Chance Showers And Thunderstorms | 7 to 10 mph NE | 50% |
| Tuesday | 66°F | Chance Rain Showers then Mostly Cloudy | 10 mph NE | 38% |
| Tuesday Night | 51°F | Mostly Cloudy | 5 to 9 mph NNE | 6% |
| Wednesday | 69°F | Partly Sunny | 5 to 8 mph N | 1% |
| Wednesday Night | 53°F | Partly Cloudy | 2 to 7 mph NNE | 0% |
| Thursday | 72°F | Partly Sunny | 2 to 6 mph NNE | 0% |
| Thursday Night | 56°F | Mostly Cloudy | 1 to 5 mph NE | 3% |
| Friday | 75°F | Partly Sunny | 2 to 6 mph NE | 7% |
| Friday Night | 56°F | Partly Cloudy | 5 mph NE | 6% |
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 Sep 19, 2026.