June weather forecastThornton, CA
June
Weather in June
June, the first month of the summer in Thornton, is a tropical month, with an average temperature varying between 56.7°F (13.7°C) and 88.2°F (31.2°C).Temperature
Thornton's transition into June sees a rise in the average high-temperature, advancing from a moderately hot 77.7°F (25.4°C) in May to a tropical 88.2°F (31.2°C). Thornton's temperature in June declines substantially from daytime highs, settling at a consistent average of 56.7°F (13.7°C) during the nights.Heat index
In June, the average heat index is estimated at a hot 91.4°F (33°C). Adopt enhanced safety measures, heat exhaustion and heat cramps could occur. Continuous activity may induce heatstroke.It is important to note that the heat index values are for shaded areas and light wind scenarios. Direct exposure to sunlight could raise the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'feels like', provides an understanding of perceived warmth by combining temperature and relative humidity. The individual's impression of temperature can be affected by numerous factors such as metabolic variations, physical exertion, and attire. Direct sun exposure is noteworthy in its ability to escalate the felt temperature, potentially adding 15 Fahrenheit (8 Celsius) degrees to the heat index. Heat index values are extremely significant for children. Young individuals usually face more risks than adults due to their lower sweat production. Their large skin surface area relative to their tiny bodies and high heat production from their activities adds to their risk.
Humidity
The average relative humidity in June is 48%.Rainfall
In Thornton, during June, the rain falls for 0.9 days and regularly aggregates up to 0.12" (3mm) of precipitation. Throughout the year, there are 63.8 rainfall days, and 12.6" (320mm) of precipitation is accumulated.Snowfall
In Thornton, California, snow does not fall in January through November.Daylight
With an average of 14h and 48min of daylight, June has the longest days of the year.On the first day of June, sunrise is at 5:43 am and sunset at 8:23 pm. On the last day of the month, sunrise is at 5:46 am and sunset at 8:33 pm PDT.
Sunshine
In June, the average sunshine is 11.8h.UV index
The month with the highest UV index is June, with an average maximum UV index of 7. A UV Index estimate of 6 to 7 represents a high health vulnerability from unprotected exposure to Sun's UV rays for the ordinary person.Note: The maximum UV index of 7 during June leads to these instructions:
Exercise precautions and adapt sun safety practices. Defence against skin and eye affliction is paramount. Make an effort to avoid direct sun exposure between 10 a.m. and 4 p.m., the peak period for UV radiation, and note that objects like parasols or canopies might not offer full sun protection. A wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in June
Thornton, CA
- Average high temperature in June: 88.2°F
The warmest month (with the highest average high temperature) is July (93.9°F).
The month with the lowest average high temperature is December (55°F).
- Average low temperature in June: 56.7°F
The month with the highest average low temperature is August (58.8°F).
The coldest month (with the lowest average low temperature) is December (41°F).
Average pressure in June
Thornton, CA
- Average pressure in June: 29.91"Hg
The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in June
Thornton, CA
- Average wind speed in June: 5.8mph
The windiest months (with the highest average wind speed) are February and June (5.8mph).
The calmest month (with the lowest average wind speed) is November (4.4mph).
Average humidity in June
Thornton, CA
- Average humidity in June: 48%
The month with the highest relative humidity is March (75%).
The month with the lowest relative humidity is July (45%).
Average rainfall in June
Thornton, CA
- Average rainfall in June: 0.12"
The wettest month (with the highest rainfall) is February (2.4").
The driest months (with the least rainfall) are July and August (0.04").
Average rainfall days in June
Thornton, CA
- Average rainfall days in June: 0.9 days
The month with the highest number of rainy days is March (12.4 days).
The month with the least rainy days is June (0.9 days).
Average snowfall days in June
Thornton, CA
- Average snowfall days in June: 0 days
The month with the highest number of snowfall days is December (0.1 days).
The months with the least snowfall days are January, February, March, April, May, June, July, August, September, October and November (0 days).
Average daylight in June /
Average sunshine in June
Thornton, 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 36min).
- Average sunshine in June: 11h and 48min
The month with the most sunshine is July (Average sunshine: 12h and 6min).
The month with the least sunshine is December (Average sunshine: 5h and 54min).
Average sunshine days in June
Thornton, CA
- Average sunshine days in June: 28.5 days
The month with the most sunshine days is August (29.3 days).
The month with the least sunshine days is March (17.8 days).
Average UV index in June
Thornton, CA
- Average UV index in June: 7
The month with the highest UV index is June (UV index 7).
The months with the lowest UV index are January, February, November and December (UV index 3).
Average cloud cover in June
Thornton, CA
- Average cloud cover in June: 10
The month with the most cloud cover is March (Cloud cover 35).
The month with the least cloud cover is July (Cloud cover 4).
Average visibility in June
Thornton, 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).
