See exactly when rain will start and stop with a minute-by-minute precipitation nowcast for the next hour.
19°
Overcast
Feels Like: 9°
Min: 18°
Max: 20°
The next few hours will be overcast, with today reaching 20°C and dropping to 11°C. The coming days will be drizzle
Compare today's weather with yesterday's data and track temperature trends over time.
Hourly Forecast
Daylight Hours
06:50
Sunrise
19:02
Sunset
Moon
Waxing Crescent
12:48
Moonrise
21:06
Moonset
Daily Forecast
Today
Thursday
Friday
Saturday
Sunday
Monday
Tuesday
Wednesday
Thursday
Friday
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UV Index
Humidity
Weather in Rock Island today, September 16, 2026
Rock Island 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. The first half of the day looks overcast, as cloud amounts reach about 100% around 09:00. Brighter weather, if it comes, waits until later.
Expect highs of 20°C and cooler readings close to 18°C. Moisture in the air spans 88%-98%, with the highest values around 23:00. Expect gentle winds, highest near 17:00 at 3.2 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 12.8 km, briefly nearer 6.7 km. Daylight runs from 06:50 to 19:02, lasting 12 hours 12 minutes of sunlight today.
The practical takeaway for Rock Island on September 16, 2026 is a cloudy day that stays usable, just not particularly bright, around 20°C.
Frequently asked questions about weather in Rock Island
How warm does it get in Rock Island?
The warmest month in Rock Island is July, with average high temperatures of 29°C. The average temperature during this period is around 25°C.
How cold does it get in Rock Island?
The coldest month in Rock Island 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 Rock Island?
The wettest month in Rock Island is May, with an average of 126mm of precipitation.
What is the driest time of year in Rock Island?
The driest month in Rock Island is February, with an average of 49mm of precipitation.
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