See exactly when rain will start and stop with a minute-by-minute precipitation nowcast for the next hour.
Compare today's weather with yesterday's data and track temperature trends over time.
Hourly Forecast
Daylight Hours
06:41
Sunrise
18:54
Sunset
Moon
Waxing Crescent
12:32
Moonrise
21:03
Moonset
Daily Forecast
Wednesday
Today
Friday
Saturday
Sunday
Monday
Tuesday
Wednesday
Thursday
Friday
Air Quality Data Available
Upgrade to access real-time air quality data for Arthur.
Resources
UV Index
Humidity
Weather in Arthur tomorrow, September 17, 2026
Arthur is set for a fine, sunny day on September 17, 2026, with only limited interruptions to the clear sky. The early hours look particularly favourable for being outside. Expect a grey start, with morning cloud around 100% by 01:00. Outdoor plans early on should not rely on bright skies.
The day peaks near 35°C and cools toward 22°C. The air stays humid, with relative humidity between 44% and 97% and the peak around 04:00. Airflow remains manageable, reaching about 5.2 km/h around 09:00.
Expect a more open afternoon, with limited cloud around 56% by 21:00. Residual damp risk should be lower than earlier. Expect visibility near 15.2 km, with poorer spells close to 12.5 km. Daylight runs from 06:42 to 18:52, lasting 12 hours 9 minutes of sunlight today.
In short, September 17, 2026 looks like a fine day in Arthur for being outside, peaking around 35°C.
Frequently asked questions about weather in Arthur
How warm does it get in Arthur?
The warmest month in Arthur is July, with average high temperatures of 30°C. The average temperature during this period is around 25°C.
How cold does it get in Arthur?
The coldest month in Arthur is January, with average low temperatures of -5°C. The average temperature during this period is around -1°C.
What is the wettest time of year in Arthur?
The wettest month in Arthur is July, with an average of 129mm of precipitation.
What is the driest time of year in Arthur?
The driest month in Arthur is December, with an average of 63mm of precipitation.
Explore more weather forecasts
- Mattoon, Illinois
- New York City, New York
- Charleston, Illinois
- Los Angeles, California
- Decatur, Illinois
- Brooklyn, New York
- Champaign, Illinois
- Chicago, Illinois
- Urbana, Illinois
- Houston, Texas
- Effingham, Illinois
- Queens, New York
- Rantoul, Illinois
- Phoenix, Arizona
- Taylorville, Illinois
- Philadelphia, Pennsylvania
