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Hourly Forecast
Daylight Hours
06:40
Sunrise
18:52
Sunset
Moon
Waxing Crescent
12:38
Moonrise
20:55
Moonset
Daily Forecast
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Weather in Romeoville today, September 16, 2026
Romeoville looks cloudy on September 16, 2026, with grey skies for much of the day. Sunshine stays limited, so the overall tone is muted from the morning onward. Expect a grey start, with morning cloud around 100% by 04:00. Outdoor plans early on should not rely on bright skies.
Expect highs of 24°C and cooler readings close to 15°C. The air stays humid, with relative humidity between 65% and 94% and the peak around 06:00. Expect gentle winds, highest near 07:00 at 7.1 km/h.
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 13.0 km, briefly nearer 3.5 km. Expect sunrise at 06:40, sunset at 18:52, and 12 hours 12 minutes of sunlight today overall.
In short, cloud leads the story in Romeoville on September 16, 2026; expect limited sun and a peak around 24°C.
Frequently asked questions about weather in Romeoville
How warm does it get in Romeoville?
The warmest month in Romeoville 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 Romeoville?
The coldest month in Romeoville 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 Romeoville?
The wettest month in Romeoville is May, with an average of 124mm of precipitation.
What is the driest time of year in Romeoville?
The driest month in Romeoville is November, with an average of 55mm of precipitation.
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