June weather forecastNewcastle, CA
June
Weather in June
June, the first month of the summer in Newcastle, is still a warm month, with an average temperature ranging between max 84.6°F (29.2°C) and min 56.7°F (13.7°C).Temperature
The average high-temperature increases in June, moving from a moderately hot 73.8°F (23.2°C) in May to a still warm 84.6°F (29.2°C). Despite high daytime temperatures, the average temperature in Newcastle lowers to a moderate 56.7°F (13.7°C) during June nights.Heat index
June's average heat index is computed to be 84.2°F (29°C). Staying active during long-term exposure might result in a state of exhaustion and cause heat cramps.Take note of the fact that heat index values are based on shaded circumstances with light airflows. Direct sunlight can cause a surge in the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'real feel', is an index that combines air temperature and relative humidity to determine the human-perceived temperature equivalent. This effect is personal, shaped by the individual's physical activity and heat sensitivity, influenced by factors including wind, clothing, and metabolic variances. Realize that direct exposure to sunlight can augment the felt heat, leading to a potential increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially vital to children. Young ones generally face higher dangers than adults since they sweat less. Along with their large skin surface area compared totheir small bodies and increased heat production from their activities, the risks are heightened.
Humidity
The average relative humidity in June in Newcastle is 46%.Rainfall
In Newcastle, in June, during 2.3 rainfall days, 0.24" (6mm) of precipitation is typically accumulated. In Newcastle, during the entire year, the rain falls for 84.8 days and collects up to 28.86" (733mm) of precipitation.Snowfall
January, April through November are months without snowfall.Daylight
The month with the longest days in Newcastle is June, with an average of 14h and 48min of daylight.On the first day of June in Newcastle, California, sunrise is at 5:40 am and sunset at 8:24 pm. On the last day of the month, sunrise is at 5:42 am and sunset at 8:33 pm PDT.
Sunshine
The average sunshine in June is 11.8h.UV index
June and July, with an average maximum UV index of 7, are months with the highest UV index. A UV Index value of 6 to 7 symbolizes a high health risk from exposure to the Sun's UV rays for the ordinary person.Note: In June, a daily UV index of 7 turns into the following recommendations:
Resist extreme sun exposure. Guarding against solar damage is essential. Limit your direct sun exposure, especially between 10 a.m. and 4 p.m., when UV radiation is strongest. Shade structures might not provide complete sun protection. To mitigate harm from sun exposure, pick sunglasses offering UVA and UVB defense.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in June
Newcastle, CA
- Average high temperature in June: 84.6°F
The warmest month (with the highest average high temperature) is July (91.9°F).
The month with the lowest average high temperature is December (53.4°F).
- Average low temperature in June: 56.7°F
The month with the highest average low temperature is July (60.6°F).
The coldest month (with the lowest average low temperature) is December (39.2°F).
Average pressure in June
Newcastle, CA
- Average pressure in June: 29.9"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.9"Hg).
Average wind speed in June
Newcastle, CA
- Average wind speed in June: 4.9mph
The windiest months (with the highest average wind speed) are February and March (5.7mph).
The calmest month (with the lowest average wind speed) is August (4.3mph).
Average humidity in June
Newcastle, CA
- Average humidity in June: 46%
The month with the highest relative humidity is March (75%).
The month with the lowest relative humidity is July (38%).
Average rainfall in June
Newcastle, CA
- Average rainfall in June: 0.24"
The wettest month (with the highest rainfall) is March (5.63").
The driest months (with the least rainfall) are July and August (0.04").
Average rainfall days in June
Newcastle, CA
- Average rainfall days in June: 2.3 days
The month with the highest number of rainy days is March (15.4 days).
The month with the least rainy days is July (1 days).
Average snowfall in June
Newcastle, CA
- Average snowfall in June: 0"
The month with the highest snowfall is February (1.18").
The months with the least snowfall are January, April, May, June, July, August, September, October and November (0").
Average snowfall days in June
Newcastle, CA
- Average snowfall days in June: 0 days
The month with the highest number of snowfall days is February (0.6 days).
The months with the least snowfall days are January, April, May, June, July, August, September, October and November (0 days).
Average daylight in June /
Average sunshine in June
Newcastle, CA
- Average daylight in June: 14h and 48min
The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 30min).
- Average sunshine in June: 11h and 48min
The month with the most sunshine is July (Average sunshine: 12h and 6min).
The months with the least sunshine are January and December (Average sunshine: 5h and 48min).
Average sunshine days in June
Newcastle, CA
- Average sunshine days in June: 26.8 days
The month with the most sunshine days is July (29.6 days).
The month with the least sunshine days is March (14.6 days).
Average UV index in June
Newcastle, CA
- Average UV index in June: 7
The months with the highest UV index are June and July (UV index 7).
The months with the lowest UV index are January, February, November and December (UV index 3).
Average cloud cover in June
Newcastle, CA
- Average cloud cover in June: 10
The month with the most cloud cover is March (Cloud cover 41).
The month with the least cloud cover is July (Cloud cover 4).
Average visibility in June
Newcastle, CA
- Average visibility in June: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).





