June weather forecast
Grand Terrace, CA

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Weather in June

The first month of the summer, June, is also a moderately hot month in Grand Terrace, California, with an average temperature ranging between max 85.1°F (29.5°C) and min 58.5°F (14.7°C).

Temperature

Grand Terrace's transition into June is marked by a minor temperature shift, moving from 76.5°F (24.7°C) in May to a still moderately hot 85.1°F (29.5°C). With a significant temperature contrast, nighttime temperatures hover around an average low of 58.5°F (14.7°C) in June.

Heat index

June's heat index is appraised at a tropical 86°F (30°C). Constant exposure and activity lead to possible fatigue. Prolonged exercise may result in heat cramps.
Evaluating the heat index requires understanding its values in the shade and with gentle winds. With direct sunlight, the heat index could increase 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. Additional elements including metabolic differences, the level of physical activity, and attire have a role in shaping the individual's temperature perception. Always consider that direct sunlight exposure might heighten the heat's effects, pushing the heat index up by 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for babies and toddlers. In general, children are more at risk than adults because they sweat less. Furthermore, the large skin surface compared to their small bodies and the high heat production due to their actions contribute to this vulnerability.

Humidity

The average relative humidity in June in Grand Terrace is 46%.

Rainfall

The month with the least rainfall is June, when the rain falls for 1.2 days and typically collects 0.04" (1mm) of precipitation.

Snowfall

January, March through December are months without snowfall.

Daylight

The month with the longest days is June, with an average of 14h and 24min of daylight.
On the first day of the month, sunrise is at 5:38 am and sunset at 7:55 pm. On the last day of June, in Grand Terrace, California, sunrise is at 5:41 am and sunset at 8:04 pm PDT.

Sunshine

In Grand Terrace, the average sunshine in June is 12.1h.

UV index

The months with the highest UV index in Grand Terrace are June through August, with an average maximum UV index of 7. A UV Index of 6 to 7 symbolizes a high health risk from exposure to the Sun's UV radiation for the ordinary person.
Note: A daily high UV index of 7 in June leads to these guidelines:
Use protective steps and abide by sun safety guidelines. Safeguarding against skin and eye harm is necessary. Avoid exposure to the Sun and try to stay in the shade between 10 a.m. and 4 p.m., when UV radiation is most potent, but be aware that parasols or canopies may not offer full protection. Counter UV radiation's ill effects with clothing designed for sun safety and UV-resistant eyewear.
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Frequently asked questions

How hot is it in Grand Terrace in June?

The high-temperature, in June, in Grand Terrace, is 85.1°F (29.5°C), while the low-temperature averages to 58.5°F (14.7°C). In June, the average heat index (a.k.a. 'feels like', 'felt air temperature'), which calculates the temperature value influenced by the moisture in the air, is appraised at 86°F (30°C).

What is the average humidity in June in Grand Terrace?

In Grand Terrace, the average relative humidity in June is 46%.

What is the driest month in Grand Terrace?

June is the month with the least rainfall in Grand Terrace. Rain falls for 1.2 days and accumulates 0.04" (1mm) of precipitation.

How many days does it rain in June in Grand Terrace?

In Grand Terrace, California, during June, the rain falls for 1.2 days and regularly aggregates up to 0.04" (1mm) of precipitation.

When it does not snow in Grand Terrace?

In Grand Terrace, California, snow does not fall in January, March through December.

When are the longest days in Grand Terrace?

With an average of 14h and 24min of daylight, June has the longest days of the year.

What is the average length of the day in June in Grand Terrace?

In Grand Terrace, California, the average day length in June is 14h and 23min.

What time are sunrise and sunset in June in Grand Terrace?

On the first day of June in Grand Terrace, California, sunrise is at 5:38 am and sunset at 7:55 pm. On the last day of the month, sunrise is at 5:41 am and sunset at 8:04 pm PDT.

How long on average sun shines in June in Grand Terrace?

In Grand Terrace, the average sunshine duration in June is 12.1h.

What are the months with the highest UV index in Grand Terrace?

June through August, with an average maximum UV index of 7, are months with the highest UV index in Grand Terrace.

What is the UV index intensity in June in Grand Terrace?

In Grand Terrace, California, the average daily maximum UV index in June is 7. A UV Index of 6 to 7 symbolizes a high health risk from exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in June
Grand Terrace, CA

Average temperature in June - Grand Terrace, CA
  • Average high temperature in June: 85.1°F

The warmest month (with the highest average high temperature) is August (91.9°F).
The month with the lowest average high temperature is December (59.9°F).

  • Average low temperature in June: 58.5°F

The month with the highest average low temperature is August (65.8°F).
The coldest month (with the lowest average low temperature) is February (43.5°F).

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Average pressure in June
Grand Terrace, CA

Average pressure in June - Grand Terrace, CA
  • Average pressure in June: 29.85"Hg

The month with the highest atmospheric pressure is January (30.1"Hg).
The month with the lowest atmospheric pressure is June (29.85"Hg).

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Average wind speed in June
Grand Terrace, CA

Average wind speed in June - Grand Terrace, CA
  • Average wind speed in June: 5.5mph

The windiest months (with the highest average wind speed) are April and May (6mph).
The calmest month (with the lowest average wind speed) is September (4.5mph).

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Average humidity in June
Grand Terrace, CA

Average humidity in June - Grand Terrace, CA
  • Average humidity in June: 46%

The month with the highest relative humidity is February (53%).
The month with the lowest relative humidity is August (38%).

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Average rainfall in June
Grand Terrace, CA

Average rainfall in June - Grand Terrace, CA
  • Average rainfall in June: 0.04"

The wettest month (with the highest rainfall) is December (1.42").
The driest month (with the least rainfall) is June (0.04").

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Average rainfall days in June
Grand Terrace, CA

Average rainfall days in June - Grand Terrace, CA
  • Average rainfall days in June: 1.2 days

The month with the highest number of rainy days is March (6.7 days).
The month with the least rainy days is June (1.2 days).

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Average snowfall days in June
Grand Terrace, CA

Average snowfall days in June - Grand Terrace, CA
  • Average snowfall days in June: 0 days

The month with the highest number of snowfall days is February (0.1 days).
The months with the least snowfall days are January, March, April, May, June, July, August, September, October, November and December (0 days).

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Average daylight in June /
Average sunshine in June
Grand Terrace, CA

Average daylight in June / Average sunshine in June - Grand Terrace, CA
  • Average daylight in June: 14h and 2min

The month with the longest days is June (Average daylight: 14h and 24min).
The month with the shortest days is December (Average daylight: 9h and 54min).

  • Average sunshine in June: 12h and 1min

The month with the most sunshine is July (Average sunshine: 12h and 12min).
The month with the least sunshine is December (Average sunshine: 6h and 54min).

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Average sunshine days in June
Grand Terrace, CA

Average sunshine days in June - Grand Terrace, CA
  • Average sunshine days in June: 27.9 days

The months with the most sunshine days are June and October (27.9 days).
The month with the least sunshine days is February (21.7 days).

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Average UV index in June
Grand Terrace, CA

Average UV index in June - Grand Terrace, CA
  • Average UV index in June: 7

The months with the highest UV index are June, July and August (UV index 7).
The month with the lowest UV index is December (UV index 3).

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Average cloud cover in June
Grand Terrace, CA

Average cloud cover in June - Grand Terrace, CA
  • Average cloud cover in June: 6

The months with the most cloud cover are February and December (Cloud cover 21).
The month with the least cloud cover is August (Cloud cover 5).

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Average visibility in June
Grand Terrace, CA

Average visibility in June - Grand Terrace, 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).

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Grand Terrace, California, USA

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