Allentown Weather Forecast
- 62
- 81
Rain Showers Likely
- 58
- 79
Chance Rain Showers
- 58
- 79
Mostly Sunny
- 60
- 83
Mostly Sunny
- 62
- 84
Partly Sunny
- 64
- 85
Slight Chance Rain Showers
Today 31 Jul Allegheny
Mostly cloudy. A chance of Showers and Thunderstorms in the Morning, then Showers and Thunderstorms likely in the afternoon. Humid with Highs around 80. Temperatures falling into the mid 70s in the afternoon. Northeast Winds 5 to 10 Mph. Chance of rain 70 percent.
Tonight 31 Jul Allegheny
Mostly cloudy. A chance of Showers and Thunderstorms in the Evening, then a slight chance of Showers after midnight. Lows in the lower 60s. Northeast Winds 5 to 10 Mph with Gusts up to 20 Mph. Chance of rain 50 percent.
Allentown Temperature Statistics
July Temperature
Pittsburgh - Allegheny County Airport (5.6 miles)
Lowest 22 July, 2025
57.7 °FAverage July
76.8 °FHighest 26 July, 2025
90.6 °F
Climate (2020–Present)
Pittsburgh - Allegheny County Airport (5.6 miles)
Average Low 2020–2025
46.2 °FAverage 2020–2025
54.7 °FAverage High 2020–2025
63.4 °F