July weather forecast
Grand Terrace, CA

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Weather in July

July is a hot summer month in Grand Terrace, California, with an average temperature fluctuating between 64.9°F (18.3°C) and 91°F (32.8°C).

Temperature

July's onset brings a subtle temperature rise, moving from a warm 85.1°F (29.5°C) in June to a tropical 91°F (32.8°C). Grand Terrace's nighttime temperature in July demonstrates a noticeable plunge to an enjoyable 64.9°F (18.3°C).

Heat index

In July, the average heat index is appraised at a hot 93.2°F (34°C). Preventive measures are required to mitigate the risk of heat cramps and heat exhaustion. Continuous activity may precipitate heatstroke.
Take note of the fact that heat index values are based on shaded circumstances with light airflows. Exposure to direct sunshine can increase heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'felt air temperature', ties air temperature with relative humidity to produce the perceived temperature sensation. This effect is personal, influenced by the individual's physical activity and heat sensitivity, shaped by factors including wind, attire, and metabolic variations. Direct sunlight can potentially raise the heat index by 15 Fahrenheit (8 Celsius) degrees, so it's crucial to consider. Heat index values are highly critical for babies and toddlers. 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 July, the average relative humidity in Grand Terrace is 41%.

Rainfall

In Grand Terrace, in July, during 3.1 rainfall days, 0.2" (5mm) of precipitation is typically accumulated. In Grand Terrace, during the entire year, the rain falls for 46.6 days and collects up to 6.18" (157mm) of precipitation.

Snowfall

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

Daylight

The average length of the day in July in Grand Terrace is 14h and 10min.
On the first day of July, sunrise is at 5:41 am and sunset at 8:04 pm. On the last day of the month, sunrise is at 6:00 am and sunset at 7:50 pm PDT.

Sunshine

With an average of 12.2h of sunshine, July has the most sunshine of the year in Grand Terrace.

UV index

June through August, with an average maximum UV index of 7, are months with the highest UV index in Grand Terrace. A UV Index estimate of 6 to 7 represents a high health vulnerability from exposure to the Sun's UV rays for average individuals.
Note: The daily high UV index of 7 during July translates into the following recommendations:
Take precautions and adopt sun safety practices. Protection against sunburn is obliged. The time between 10 a.m. and 4 p.m. is when UV radiation is at its peak. Limit exposure to direct sunlight during these hours. In bright sunlight, prioritize sunglasses that grant protection from UVA and UVB radiation.
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Frequently asked questions

How hot does it get in Grand Terrace in July?

An average high-temperature, in July, in Grand Terrace, is 91°F (32.8°C) and the average low-temperature is 64.9°F (18.3°C). In July, the average heat index (a.k.a. 'apparent temperature', 'felt air temperature'), which represents the influence of relative humidity on air temperature, is appraised at 93.2°F (34°C).

What is the average humidity in July in Grand Terrace?

The average relative humidity in July in Grand Terrace, California, is 41%.

How much does it rain in Grand Terrace in July?

In Grand Terrace, in July, it is raining for 3.1 days, with typically 0.2" (5mm) of accumulated precipitation.

When it does not snow in Grand Terrace?

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

How many hours of daylight does Grand Terrace have in July?

In July, the average day length in Grand Terrace, California, is 14h and 10min.

When are sunrise and sunset in July in Grand Terrace?

In July, on the first day of the month, sunrise is at 5:41 am and sunset at 8:04 pm. On the last day of the month, in Grand Terrace, California, sunrise is at 6:00 am and sunset at 7:50 pm PDT.

What month has the most sunshine in Grand Terrace?

July has the most sunshine of the year in Grand Terrace, California, with an average of 12.2h of sunshine.

How many hours of sunshine does Grand Terrace have in July?

The average sunshine duration in July is 12.2h.

When is 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, California.

What is the UV index reading in July in Grand Terrace?

In July, the average daily maximum UV index in Grand Terrace is 7. A UV Index estimate of 6 to 7 represents a high health vulnerability from unsafe 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 July
Grand Terrace, CA

Average temperature in July - Grand Terrace, CA
  • Average high temperature in July: 91°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 July: 64.9°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 July
Grand Terrace, CA

Average pressure in July - Grand Terrace, CA
  • Average pressure in July: 29.88"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 July
Grand Terrace, CA

Average wind speed in July - Grand Terrace, CA
  • Average wind speed in July: 5.1mph

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 July
Grand Terrace, CA

Average humidity in July - Grand Terrace, CA
  • Average humidity in July: 41%

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 July
Grand Terrace, CA

Average rainfall in July - Grand Terrace, CA
  • Average rainfall in July: 0.2"

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 July
Grand Terrace, CA

Average rainfall days in July - Grand Terrace, CA
  • Average rainfall days in July: 3.1 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 July
Grand Terrace, CA

Average snowfall days in July - Grand Terrace, CA
  • Average snowfall days in July: 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 July /
Average sunshine in July
Grand Terrace, CA

Average daylight in July / Average sunshine in July - Grand Terrace, CA
  • Average daylight in July: 14h and 1min

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 July: 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 July
Grand Terrace, CA

Average sunshine days in July - Grand Terrace, CA
  • Average sunshine days in July: 25.8 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 July
Grand Terrace, CA

Average UV index in July - Grand Terrace, CA
  • Average UV index in July: 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 July
Grand Terrace, CA

Average cloud cover in July - Grand Terrace, CA
  • Average cloud cover in July: 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 July
Grand Terrace, CA

Average visibility in July - Grand Terrace, CA
  • Average visibility in July: 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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