June weather forecastMartinez, CA

June
Weather in June
The first month of the summer, June, is also a moderately hot month in Martinez, California, with an average temperature fluctuating between 81.3°F (27.4°C) and 55°F (12.8°C).Temperature
In June, the average high-temperature marginally rises from a moderately hot 73.6°F (23.1°C) in May to a still warm 81.3°F (27.4°C). Martinez anticipates a considerable drop in temperature at night in June, with an average low of 55°F (12.8°C).Heat index
The average heat index in June is appraised at 82.4°F (28°C). With ongoing exposure and activity, one might experience weariness, and heat cramps could ensue.When considering the heat index, it's pivotal to note it is for shade and mild wind conditions. Exposure to unobstructed sunshine could lead to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'real feel', combines both the air temperature and the humidity level to give a perceived human temperature. One's perception of temperature can vary depending on physical activity and individual heat sensitivity, influenced by factors like wind, attire, and metabolic variations. One should be aware that direct sunshine can amplify the perceived temperature, raising the heat index by as much as 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. Kids are generally in more danger than adults because they perspire less. Their large skin surface area compared to their small bodies and the excessive heat due to their actions raises their risk.
Humidity
In Martinez, the average relative humidity in June is 57%.Rainfall
In Martinez, in June, during 1.2 rainfall days, 0.08" (2mm) of precipitation is typically accumulated. Throughout the year, there are 48.9 rainfall days, and 4.96" (126mm) of precipitation is accumulated.Daylight
The month with the longest days is June, with an average of 14h and 48min of daylight.On the first day of the month, sunrise is at 5:47 am and sunset at 8:25 pm. On the last day of June, sunrise is at 5:49 am and sunset at 8:35 pm PDT.
Sunshine
In Martinez, the average sunshine in June is 11.7h.UV index
June through August, with an average maximum UV index of 6, are months with the highest UV index. A UV Index reading of 6 to 7 represents a high health vulnerability from exposure to the Sun's UV radiation for average individuals.Note: The UV index of 6 during June translates into the following guidance:
Uphold preventive measures and conform to sun safety guidelines. Defending against skin and eye harm is crucial. Avoid direct Sun exposure and seek shade between 10 a.m. and 4 p.m., when UV radiation is at its peak, but keep in mind that not all shade structures provide complete protection. Outfit yourself in sun-safe attire, like long sleeves, pants, a hat, and UV-blocking sunglasses.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in June
Martinez, CA
- Average high temperature in June: 81.3°F
The warmest month (with the highest average high temperature) is July (84.2°F).
The month with the lowest average high temperature is December (55.4°F).
- Average low temperature in June: 55°F
The month with the highest average low temperature is September (57.6°F).
The coldest months (with the lowest average low temperature) are January and December (42.3°F).
Average pressure in June
Martinez, CA
- Average pressure in June: 29.91"Hg
The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in June
Martinez, CA
- Average wind speed in June: 7.3mph
The windiest month (with the highest average wind speed) is May (7.4mph).
The calmest month (with the lowest average wind speed) is November (4.5mph).
Average humidity in June
Martinez, CA
- Average humidity in June: 57%
The month with the highest relative humidity is March (74%).
The months with the lowest relative humidity are September and October (56%).
Average rainfall in June
Martinez, CA
- Average rainfall in June: 0.08"
The wettest month (with the highest rainfall) is February (0.98").
The driest months (with the least rainfall) are July and August (0.04").
Average rainfall days in June
Martinez, CA
- Average rainfall days in June: 1.2 days
The month with the highest number of rainy days is March (8.3 days).
The month with the least rainy days is August (1 days).
Average daylight in June /
Average sunshine in June
Martinez, 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 42min
The month with the most sunshine is July (Average sunshine: 12h and 0min).
The month with the least sunshine is December (Average sunshine: 5h and 42min).
Average sunshine days in June
Martinez, CA
- Average sunshine days in June: 28 days
The month with the most sunshine days is July (29 days).
The months with the least sunshine days are February and March (22.1 days).
Average UV index in June
Martinez, CA
- Average UV index in June: 6
The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 3).
Average cloud cover in June
Martinez, CA
- Average cloud cover in June: 12
The months with the most cloud cover are March and December (Cloud cover 36).
The month with the least cloud cover is July (Cloud cover 7).
Average visibility in June
Martinez, 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).





