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
06:39
Sunrise
18:55
Sunset
Moon
Waxing Crescent
11:35
Moonrise
20:24
Moonset
Daily Forecast
Today
Wednesday
Thursday
Friday
Saturday
Sunday
Monday
Tuesday
Wednesday
Thursday
Air Quality Data Available
Upgrade to access real-time air quality data for Streamwood.
Resources
UV Index
Humidity
Weather in Streamwood today, September 15, 2026
Streamwood looks cloudy on September 15, 2026, with grey skies for much of the day. Sunshine stays limited, so the overall tone is muted from the morning onward. The morning sky stays heavily clouded, with cover near 100% around 04:00. Grey conditions set the early tone before any later change.
The temperature range runs from about 19°C up to 25°C. Moisture in the air spans 62%-96%, with the highest values around 09:00. Winds stay light, near 6.8 km/h by 04:00, so the day feels still more than breezy.
Through the afternoon cloud remains the main feature, with cover near 100% around 12:00. Bright spells should stay limited even as the day wears on. Horizontal visibility sits around 14.4 km, briefly nearer 1.8 km. Sunrise is at 06:39 and sunset at 18:55, giving 12 hours 15 minutes of sunlight today.
Taken together, overcast skies in Streamwood on September 15, 2026 favour indoor or covered options, with temperatures near 25°C.
Frequently asked questions about weather in Streamwood
How warm does it get in Streamwood?
The warmest month in Streamwood 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 Streamwood?
The coldest month in Streamwood is January, with average low temperatures of -7°C. The average temperature during this period is around -4°C.
What is the wettest time of year in Streamwood?
The wettest month in Streamwood is May, with an average of 130mm of precipitation.
What is the driest time of year in Streamwood?
The driest month in Streamwood is February, with an average of 50mm of precipitation.
Explore more weather forecasts
- Bartlett, Illinois
- New York City, New York
- Hanover Park, Illinois
- Los Angeles, California
- Schaumburg, Illinois
- Brooklyn, New York
- Hoffman Estates, Illinois
- Chicago, Illinois
- Elgin, Illinois
- Houston, Texas
- Roselle, Illinois
- Queens, New York
- South Elgin, Illinois
- Phoenix, Arizona
- Bloomingdale, Illinois
- Philadelphia, Pennsylvania
