Arlington Heights Weather Forecast
- 65
- 84
Rain Showers Likely
- 65
- 79
Slight Chance Thunderstorms
- 62
- 78
Mostly Sunny
- 66
- 83
Partly Sunny
- 69
- 89
Chance Rain Showers
- 65
- 87
Chance Thunderstorms
- 64
- 82
Chance Rain Showers
Today 4 Jul Northern Cook
Mostly cloudy. A chance of Showers and a slight chance of Thunderstorms late in the Morning, then Showers likely and a chance of Thunderstorms in the afternoon. Some Thunderstorms may produce heavy rainfall in the afternoon. Highs around 80. Northwest Winds around 5 Mph, becoming northeast in the afternoon. Chance of precipitation 70 percent.
Tonight 4 Jul Northern Cook
Mostly cloudy. A slight chance of Showers and Thunderstorms until early morning. Lows in the mid 60s. North Winds 5 to 10 Mph. Chance of precipitation 20 percent.
Arlington Heights Temperature Statistics
July Temperature
Chicago / Wheeling, Pal-Waukee Airport (4.3 miles)
Lowest 2 July, 2026
73.9 °FAverage July
85.8 °FHighest 1 July, 2026
95.6 °F
Climate (2021–2026)
Chicago / Wheeling, Pal-Waukee Airport (4.3 miles)
Average Low 2021–2026
44 °FAverage 2021–2026
52.8 °FAverage High 2021–2026
61.6 °F