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
06:40
Sunrise
18:58
Sunset
Moon
Waxing Crescent
10:26
Moonrise
20:03
Moonset
Daily Forecast
Monday
Today
Wednesday
Thursday
Friday
Saturday
Sunday
Monday
Tuesday
Wednesday
Air Quality Data Available
Upgrade to access real-time air quality data for Pontiac.
Resources
UV Index
Humidity
Weather in Pontiac tomorrow, September 15, 2026
Expect a muted, overcast feel in Pontiac on September 15, 2026 as cloud persists. Brighter breaks, if they arrive, should stay brief. The first half of the day looks overcast, as cloud amounts reach about 100% around 02:00. Brighter weather, if it comes, waits until later.
The temperature range runs from about 16°C up to 24°C. The air stays humid, with relative humidity between 37% and 88% and the peak around 09:00. A lighter breeze peaks around 17:00 near 7.3 km/h.
Later hours favour clearer intervals, as cloud stays near 54% around 16:00. The afternoon is the better half for outdoor time. Horizontal visibility sits around 16.0 km, briefly nearer 15.0 km. Daylight runs from 06:41 to 18:56, lasting 12 hours 15 minutes of sunlight today.
Overall, Pontiac on September 15, 2026 stays grey and muted, so outdoor plans may want a flexible backup even with a high near 24°C.
Frequently asked questions about weather in Pontiac
How warm does it get in Pontiac?
The warmest month in Pontiac is July, with average high temperatures of 29°C. The average temperature during this period is around 24°C.
How cold does it get in Pontiac?
The coldest month in Pontiac is January, with average low temperatures of -6°C. The average temperature during this period is around -3°C.
What is the wettest time of year in Pontiac?
The wettest month in Pontiac is May, with an average of 124mm of precipitation.
What is the driest time of year in Pontiac?
The driest month in Pontiac is November, with an average of 54mm of precipitation.
Explore more weather forecasts
- Streator, Illinois
- New York City, New York
- Normal, Illinois
- Los Angeles, California
- Bloomington, Illinois
- Brooklyn, New York
- Ottawa, Illinois
- Chicago, Illinois
- Morris, Illinois
- Houston, Texas
- Washington, Illinois
- Queens, New York
- Bourbonnais, Illinois
- Phoenix, Arizona
- Channahon, Illinois
- Philadelphia, Pennsylvania