Arthur, IL Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Arthur, a village in Moultrie County, Illinois.
This Afternoon
75°F
Chance Light Rain
A chance of rain after 4pm. Mostly cloudy, with a high near 75. South wind around 21 mph, with gusts as high as 35 mph. Chance of precipitation is 30%.
7-day forecast for Arthur
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 75°F | Chance Light Rain | 21 mph S | 31% |
| Tonight | 55°F | Rain | 14 to 18 mph S | 96% |
| Wednesday | 63°F | Slight Chance Light Rain then Mostly Cloudy | 12 to 15 mph SW | 24% |
| Wednesday Night | 43°F | Mostly Cloudy | 9 mph SW | 0% |
| Thursday | 63°F | Mostly Sunny | 8 to 14 mph WSW | 2% |
| Thursday Night | 41°F | Mostly Cloudy | 6 mph WNW | 9% |
| Friday | 56°F | Partly Sunny | 6 to 10 mph NNW | 12% |
| Friday Night | 35°F | Partly Cloudy | 3 to 8 mph NNW | 6% |
| Saturday | 55°F | Partly Sunny | 6 mph NW | 1% |
| Saturday Night | 32°F | Partly Cloudy | 3 mph W | 1% |
| Sunday | 61°F | Sunny | 3 to 9 mph W | 9% |
| Sunday Night | 32°F | Mostly Clear | 6 mph WNW | 6% |
| Monday | 64°F | Sunny | 3 to 10 mph WSW | 2% |
| Monday Night | 37°F | Mostly Clear | 7 mph WSW | 1% |
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 Nov 3, 2026.