See exactly when rain will start and stop with a minute-by-minute precipitation nowcast for the next hour.
18°
Clear
Feels Like: 7°
Min: 10°
Max: 23°
The next few hours will be clear, with tomorrow reaching 20°C and dropping to 4°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
06:54
Sunrise
19:10
Sunset
Moon
Waxing Crescent
13:30
Moonrise
20:48
Moonset
Daily Forecast
Wednesday
Today
Friday
Saturday
Sunday
Monday
Tuesday
Wednesday
Thursday
Friday
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Weather in Arlington Heights tomorrow, September 17, 2026
Cloud cover dominates in Arlington Heights on September 17, 2026, keeping sunshine limited. Expect a grey, overcast feel rather than long bright spells. Expect a brighter morning, with limited cloud around 0% by 00:00. Conditions start on a settled note.
The temperature range runs from about 9°C up to 20°C. The air stays humid, with relative humidity between 60% and 94% and the peak around 07:00. A lighter breeze peaks around 18:00 near 2.7 km/h.
The afternoon keeps an overcast feel, as cloud reaches about 76% around 17:00. Outdoor plans may still want a flexible backup. Expect visibility near 15.9 km, with poorer spells close to 14.5 km. Expect sunrise at 06:55, sunset at 19:08, and 12 hours 12 minutes of sunlight today overall.
The practical takeaway for Arlington Heights on September 17, 2026 is a cloudy day that stays usable, just not particularly bright, around 20°C.
Frequently asked questions about weather in Arlington Heights
How warm does it get in Arlington Heights?
The warmest month in Arlington Heights is August, with average high temperatures of 25°C. The average temperature during this period is around 18°C.
How cold does it get in Arlington Heights?
The coldest month in Arlington Heights is February, with average low temperatures of 0°C. The average temperature during this period is around 3°C.
What is the wettest time of year in Arlington Heights?
The wettest month in Arlington Heights is December, with an average of 381mm of precipitation.
What is the driest time of year in Arlington Heights?
The driest month in Arlington Heights is July, with an average of 33mm of precipitation.
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