Contents
- Weather in June
- Frequently asked questions
- Average temperature in June
- Average pressure in June
- Average wind speed in June
- Average humidity in June
- Average rainfall in June
- Average rainfall days in June
- Average daylight in June
- Average sunshine in June
- Average sunshine days in June
- Average UV index in June
- Average cloud cover in June
- Average visibility in June
Weather in June
Temperature
The arrival of June sees a shift in the average high-temperature, moving from a warm 80.4°F (26.9°C) in May to a hot 91.2°F (32.9°C). In Princeton, the June nights descend to a significantly cooler average of 60.3°F (15.7°C) compared to daytime highs.Heat index
The heat index in June is calculated to be a hot 93.2°F (34°C). More safety actions are required, heat exhaustion and heat cramps are probable. Long-term activity may precipitate heatstroke.Be advised, the heat index considers values for conditions in shade and with a light breeze. Being under direct sunlight might amplify the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'real feel', is found by incorporating humidity levels into the air temperature measurement. This effect is subjective, differing among individuals based on their physical activity and perception of heat, which can be influenced by factors like wind, clothing, and metabolic variances. It is essential to realize that direct sunlight can escalate the perceived temperature, increasing the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly relevant to babies and toddlers. Children frequently underestimate the necessity to rest and hydrate. Thirst is a late sign of dehydration - thus, it is vital to stay hydrated, particularly during lengthy physical exercises.
Humidity
The average relative humidity in June is 41%.Rainfall
In June, the rain falls for 1.8 days. Throughout June, 0.12" (3mm) of precipitation is accumulated. Throughout the year, there are 58.9 rainfall days, and 6.89" (175mm) of precipitation is accumulated.Daylight
June has the longest days of the year, with an average of 14h and 54min of daylight.On the first day of June, sunrise is at 5:42 am and sunset at 8:29 pm. On the last day of the month, sunrise is at 5:44 am and sunset at 8:39 pm PDT.
Sunshine
The average sunshine in June is 11.8h.UV index
The months with the highest UV index are June through August, with an average maximum UV index of 7. A UV Index of 6 to 7 symbolizes a high health vulnerability from unsafe exposure to UV radiation for the average person.Note: The UV index of 7 during June leads to these advisories:
Beware of overexposure. Fair-skinned individuals risk burning in less than 20 minutes. Stay in the shade and limit direct sun exposure between 10 a.m. and 4 p.m., when UV radiation is at its strongest. Remember, however, that not all shade structures provide full sun protection. In bright sunlight, prioritize sunglasses that grant protection from UVA and UVB radiation.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How hot is it in June?
What is the average humidity in June in Princeton?
How much does it rain in June?
When are the longest days?
What is the average length of the day in June?
What time are sunrise and sunset in June in Princeton?
How long on average sun shines in June?
When is the highest UV index?
What is the UV index reading in June?
Average temperature in June
Princeton, CA
- Average high temperature in June: 91.2°F
The warmest month (with the highest average high temperature) is July (98.8°F).
The month with the lowest average high temperature is December (54.5°F).
- Average low temperature in June: 60.3°F
The month with the highest average low temperature is July (61.5°F).
The coldest month (with the lowest average low temperature) is December (42.1°F).
Average pressure in June
Princeton, CA
- Average pressure in June: 29.9"Hg
The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.9"Hg).
Average wind speed in June
Princeton, CA
- Average wind speed in June: 6mph
The windiest month (with the highest average wind speed) is March (6.6mph).
The calmest month (with the lowest average wind speed) is August (5mph).
Average humidity in June
Princeton, CA
- Average humidity in June: 41%
The month with the highest relative humidity is March (71%).
The month with the lowest relative humidity is September (36%).
Average rainfall in June
Princeton, CA
- Average rainfall in June: 0.12"
The wettest months (with the highest rainfall) are February and December (1.3").
The driest months (with the least rainfall) are July and August (0.04").
Average rainfall days in June
Princeton, CA
- Average rainfall days in June: 1.8 days
The month with the highest number of rainy days is March (10.4 days).
The month with the least rainy days is July (1 days).
Average daylight in June /
Average sunshine in June
Princeton, CA
- Average daylight in June: 14h and 5min
The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 24min).
- Average sunshine in June: 11h and 5min
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 48min).
Average sunshine days in June
Princeton, CA
- Average sunshine days in June: 27.6 days
The month with the most sunshine days is July (29.8 days).
The month with the least sunshine days is March (19.7 days).
Average UV index in June
Princeton, CA
- Average UV index in June: 7
The months with the highest UV index are June, July and August (UV index 7).
The months with the lowest UV index are February, November and December (UV index 3).
Average cloud cover in June
Princeton, CA
- Average cloud cover in June: 10
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 4).
Average visibility in June
Princeton, 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).
Princeton, California, USA
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