Arthur, IL Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Arthur, a village in Moultrie County, Illinois.
Overnight
60°F
Patchy Fog
Patchy fog. Clear, with a low around 60. Southeast wind around 3 mph.
7-day forecast for Arthur
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 60°F | Patchy Fog | 3 mph SE | 0% |
| Tuesday | 85°F | Patchy Fog then Sunny | 2 to 6 mph SSE | 0% |
| Tuesday Night | 65°F | Mostly Clear | 5 mph SSE | 0% |
| Wednesday | 86°F | Sunny | 3 to 7 mph S | 3% |
| Wednesday Night | 67°F | Slight Chance Showers And Thunderstorms | 6 mph S | 55% |
| Thursday | 83°F | Showers And Thunderstorms | 3 to 7 mph SSW | 75% |
| Thursday Night | 66°F | Chance Showers And Thunderstorms | 5 mph S | 31% |
| Friday | 84°F | Partly Sunny then Slight Chance Showers And Thunderstorms | 5 mph SSW | 19% |
| Friday Night | 66°F | Slight Chance Showers And Thunderstorms | 3 mph SSW | 19% |
| Saturday | 86°F | Slight Chance Rain Showers then Slight Chance Showers And Thunderstorms | 6 mph SSW | 17% |
| Saturday Night | 69°F | Slight Chance Showers And Thunderstorms then Mostly Clear | 3 to 7 mph SSW | 15% |
| Sunday | 88°F | Sunny | 7 to 12 mph SSW | 8% |
| Sunday Night | 71°F | Mostly Clear | 10 mph SSW | 10% |
| Monday | 89°F | Mostly Sunny | 10 mph SSW | 14% |
Forecast source: National Weather Service (api.weather.gov) for Arthur (39.714, -88.470). Updated through the day.
Growing snapshot for Arthur
Last spring frost
Apr 15
First fall frost
Oct 20
Growing season
188 days
Hardiness zone
6a
More local growing data for Arthur: nearby ZIP 61911 weather · frost dates · planting calendar · Illinois frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Tuscola, Il (11.5 mi from Arthur). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.