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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

WhenTempForecastWindPrecip
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

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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.