Stewartsville Weather Forecast
- 67
- 80
Rain Showers
- 56
- 81
Mostly Sunny
- 62
- 81
Partly Sunny
- 67
- 84
Rain Showers
- 61
- 83
Chance Thunderstorms
- 59
- 80
Mostly Sunny
Today 18 Jul Warren
Showers with a slight chance of Thunderstorms in the Morning, then Showers with Thunderstorms likely in the afternoon. Smoke in the morning. Areas of smoke in the afternoon. Some Thunderstorms may produce damaging Winds in the afternoon. Locally heavy rainfall possible in the afternoon. More humid with Highs in the lower 80s. South Winds 5 to 10 Mph. Chance of rain near 100 percent.
Tonight 18 Jul Warren
Showers with Thunderstorms likely in the evening. Some Thunderstorms may produce damaging Winds in the evening. Locally heavy rainfall possible in the evening. Humid with Lows in the mid 60s. Southwest Winds around 5 Mph. Gusts up to 20 Mph in the evening. Chance of rain near 100 percent.
Stewartsville Temperature Statistics
July Temperature
Allentown, Lehigh Valley International Airport (17.4 miles)
Lowest 8 July, 2026
60.7 °FAverage July
78.6 °FHighest 2 July, 2026
101.6 °F
Climate (2021–2026)
Allentown, Lehigh Valley International Airport (17.4 miles)
Average Low 2021–2026
43.5 °FAverage 2021–2026
53.7 °FAverage High 2021–2026
63.6 °F