Newcastle, CA has a Mediterranean climate with warm and dry summers and mild and wet winters. Summers are hot, with temperatures reaching up to the upper 80s Fahrenheit during the day and cooling off to the mid-50s at night. Winters are decidedly cooler with temperatures rarely passing the 50 degree mark during the day, dropping off drastically to around 35 degrees Fahrenheit at night. Rainfall is moderate throughout the year, with most of it occurring from October through April. Newcastle experiences very little snowfall each year.
Newcastle, California gets 32 inches of rain, on average, per year. The US average is 38 inches of rain per year.
Newcastle averages 0 inches of snow per year. The US average is 28 inches of snow per year.
On average, there are 251 sunny days per year in Newcastle. The US average is 205 sunny days.
Newcastle gets some kind of precipitation, on average, 68 days per year. Precipitation is rain, snow, sleet, or hail that falls to the ground. In order for precipitation to be counted you have to get at least .01 inches on the ground to measure.
Weather Highlights
Summer High: the July high is around 93 degrees
Winter Low: the January low is 39
Rain: averages 32 inches of rain a year
Snow: averages 0 inches of snow a year