Newcastle Weather Forecast
- 61
- 86
Chance Thunderstorms
- 62
- 85
Chance Thunderstorms
- 63
- 90
Mostly Sunny
- 62
- 92
Slight Chance Thunderstorms
- 61
- 87
Chance Thunderstorms
- 61
- 85
Chance Thunderstorms
- 62
- 87
Chance Thunderstorms
Today 18 Jul Newcastle
Partly cloudy with a slight chance of Showers and Thunderstorms. Near steady temperature in the mid 80s. Southeast Winds 5 to 10 Mph. Chance of rain 20 percent.
Tonight 18 Jul Newcastle
Partly cloudy this Evening, then becoming mostly cloudy. Isolated Showers and Thunderstorms this Evening, then scattered Showers and Thunderstorms. Lows around 60. Southeast Winds 10 to 15 Mph. Chance of rain 50 percent.
Newcastle Temperature Statistics
July Temperature
Mondell Field (5.6 miles)
Lowest 12 July, 2025
41 °FAverage July
72.3 °FHighest 14 July, 2025
98.6 °F
Climate (2020–Present)
Mondell Field (5.6 miles)
Average Low 2020–2025
35.6 °FAverage 2020–2025
48.1 °FAverage High 2020–2025
60 °F