June weather forecastJamestown, CA
June
Weather in June
The first month of the summer, June, is a moderately hot month in Jamestown, California, with an average temperature ranging between max 83.8°F (28.8°C) and min 56.8°F (13.8°C).Temperature
June indicates a change in the average high-temperature, moving up from a pleasant 73°F (22.8°C) in May to a warm 83.8°F (28.8°C). Jamestown observes a substantial disparity between daytime high and the average low-temperature of 56.8°F (13.8°C) during June nights.Heat index
The heat index value during June is evaluated at 82.4°F (28°C). If one stays active during extended exposure, it might induce fatigue and result in heat cramps.Always consider that heat index estimations are for light winds and places in the shade. With exposure to direct sunlight, the heat index may be increased by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'feels like', is an index that combines air temperature and relative humidity to determine the human-perceived temperature equivalent. The impact of weather is personal, differing among a variety of people based on differences in body mass, height, and the level of physical exertion. Be aware that direct exposure to sunlight increases heat impact and may raise the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially vital to children. Young ones often disregard the necessity to rest and hydrate. Thirst usually indicates advanced dehydration - hence, it is key to stay hydrated, particularly during ongoing physical activities.
Humidity
The average relative humidity in June in Jamestown, California, is 41%.Rainfall
In Jamestown, during June, the rain falls for 2.2 days and regularly aggregates up to 0.2" (5mm) of precipitation. Throughout the year, there are 76.7 rainfall days, and 23.9" (607mm) of precipitation is accumulated.Snowfall
April through October are months without snowfall.Daylight
The month with the longest days is June, with an average of 14h and 48min of daylight.On the first day of June, sunrise is at 5:40 am and sunset at 8:18 pm. On the last day of the month, sunrise is at 5:42 am and sunset at 8:28 pm PDT.
Sunshine
In June, the average sunshine is 11.9h.UV index
The months with the highest UV index are June and July, with an average maximum UV index of 7. A UV Index value of 6 to 7 symbolizes a high threat to health from unsafe exposure to UV radiation for the average person.Note: In June, a regular UV index of 7 translates into these guidelines:
Stick with precautions and abide by sun safety procedures. Evading sunburn is essential. Avoid direct Sun exposure from 10 a.m. to 4 p.m., a period when UV radiation is most intense, and remember that not all shade structures provide full protection. It's wise to wear UVA and UVB-blocking sunglasses when the sun shines brightly.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in June
Jamestown, CA
- Average high temperature in June: 83.8°F
The warmest month (with the highest average high temperature) is July (91.4°F).
The month with the lowest average high temperature is December (52.9°F).
- Average low temperature in June: 56.8°F
The month with the highest average low temperature is July (62.2°F).
The coldest month (with the lowest average low temperature) is December (37.2°F).
Average pressure in June
Jamestown, CA
- Average pressure in June: 29.91"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in June
Jamestown, CA
- Average wind speed in June: 5.5mph
The windiest months (with the highest average wind speed) are February, March and April (5.7mph).
The calmest months (with the lowest average wind speed) are November and December (4.7mph).
Average humidity in June
Jamestown, CA
- Average humidity in June: 41%
The month with the highest relative humidity is March (70%).
The month with the lowest relative humidity is July (32%).
Average rainfall in June
Jamestown, CA
- Average rainfall in June: 0.2"
The wettest month (with the highest rainfall) is March (4.76").
The driest months (with the least rainfall) are July and August (0.04").
Average rainfall days in June
Jamestown, CA
- Average rainfall days in June: 2.2 days
The month with the highest number of rainy days is March (13.4 days).
The month with the least rainy days is August (1.4 days).
Average snowfall in June
Jamestown, CA
- Average snowfall in June: 0"
The month with the highest snowfall is February (2.72").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in June
Jamestown, CA
- Average snowfall days in June: 0 days
The month with the highest number of snowfall days is February (1.2 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).
Average daylight in June /
Average sunshine in June
Jamestown, 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 54min
The month with the most sunshine is July (Average sunshine: 12h and 6min).
The month with the least sunshine is December (Average sunshine: 6h and 0min).
Average sunshine days in June
Jamestown, CA
- Average sunshine days in June: 27.1 days
The months with the most sunshine days are July and August (28.4 days).
The month with the least sunshine days is March (16.8 days).
Average UV index in June
Jamestown, CA
- Average UV index in June: 7
The months with the highest UV index are June and July (UV index 7).
The month with the lowest UV index is November (UV index 2).
Average cloud cover in June
Jamestown, CA
- Average cloud cover in June: 9
The month with the most cloud cover is March (Cloud cover 35).
The months with the least cloud cover are July and August (Cloud cover 5).
Average visibility in June
Jamestown, 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).
