July weather forecastAlta Loma, CA
July
Weather in July
July is a tropical summer month in Alta Loma, California, with an average temperature ranging between min 64.8°F (18.2°C) and max 90.3°F (32.4°C).Temperature
The shift from June to July is marked by a slight increase in the average high-temperature, moving from a moderately hot 84.7°F (29.3°C) to a hot 90.3°F (32.4°C). Alta Loma, in July, displays a significant temperature downturn during the night, with an average reading of 64.8°F (18.2°C).Heat index
July's mean heat index is computed to be a hot 93.2°F (34°C). Exercise increased caution, heat cramps and heat exhaustion are potential hazards. Continuous activity could lead to heatstroke.Evaluating the heat index requires understanding its values in the shade and with gentle winds. Direct sunshine exposure could raise heat index values by as much as 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'felt air temperature', gives a temperature feeling by integrating air temperature and humidity. The impact of weather on an individual can be subjective, affected by the person's activity and heat perception, which can vary due to elements including wind, clothing, and metabolic differences. In direct sunlight, the heat's impact can be heightened, potentially leading to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for babies and toddlers. Children frequently underestimate the importance of resting and drinking fluids. Thirst is a symptom of advanced dehydration - hence the need to hydrate regularly, especially during protracted physical exercises.
Humidity
The average relative humidity in July is 44%.Rainfall
In Alta Loma, in July, during 3.1 rainfall days, 0.2" (5mm) of precipitation is typically accumulated. Throughout the year, there are 50.5 rainfall days, and 7.56" (192mm) of precipitation is accumulated.Daylight
In July, the average length of the day is 14h and 10min.On the first day of July, sunrise is at 5:42 am and sunset at 8:06 pm. On the last day of the month, sunrise is at 6:01 am and sunset at 7:51 pm PDT.
Sunshine
July has the most sunshine of the year, with an average of 12.1h of sunshine.UV index
The months with the highest UV index are July and August, with an average maximum UV index of 7. A UV Index estimate of 6 to 7 represents a high health vulnerability from unsafe exposure to UV radiation for the ordinary person.Note: A maximum high UV index of 7 in July translates into the following recommendations:
Persist with precautions and heed sun safety advice. Prevention of sunburn is compulsory. Make an effort to avoid direct sun exposure between 10 a.m. and 4 p.m., the peak period for UV radiation, and note that objects like parasols or canopies might not offer full sun protection. For minimizing sun-related eye damage, always choose sunglasses with UVA and UVB coverage.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in July
Alta Loma, CA
- Average high temperature in July: 90.3°F
The warmest month (with the highest average high temperature) is August (91.2°F).
The month with the lowest average high temperature is December (61.3°F).
- Average low temperature in July: 64.8°F
The month with the highest average low temperature is August (66.7°F).
The coldest month (with the lowest average low temperature) is February (45.1°F).
Average pressure in July
Alta Loma, CA
- Average pressure in July: 29.89"Hg
The month with the highest atmospheric pressure is January (30.1"Hg).
The month with the lowest atmospheric pressure is June (29.86"Hg).
Average wind speed in July
Alta Loma, CA
- Average wind speed in July: 5.1mph
The windiest months (with the highest average wind speed) are April and May (5.9mph).
The calmest month (with the lowest average wind speed) is September (4.5mph).
Average humidity in July
Alta Loma, CA
- Average humidity in July: 44%
The months with the highest relative humidity are February, March and May (53%).
The month with the lowest relative humidity is August (41%).
Average rainfall in July
Alta Loma, CA
- Average rainfall in July: 0.2"
The wettest month (with the highest rainfall) is February (1.73").
The driest month (with the least rainfall) is June (0.04").
Average rainfall days in July
Alta Loma, CA
- Average rainfall days in July: 3.1 days
The month with the highest number of rainy days is March (7.5 days).
The month with the least rainy days is June (1.2 days).
Average daylight in July /
Average sunshine in July
Alta Loma, CA
- Average daylight in July: 14h and 12min
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 6min
The month with the most sunshine is July (Average sunshine: 12h and 6min).
The month with the least sunshine is February (Average sunshine: 6h and 54min).
Average sunshine days in July
Alta Loma, CA
- Average sunshine days in July: 25.1 days
The month with the most sunshine days is June (27.7 days).
The month with the least sunshine days is February (21.4 days).
Average UV index in July
Alta Loma, CA
- Average UV index in July: 7
The months with the highest UV index are July and August (UV index 7).
The month with the lowest UV index is December (UV index 3).
Average cloud cover in July
Alta Loma, CA
- Average cloud cover in July: 6
The months with the most cloud cover are March and December (Cloud cover 21).
The month with the least cloud cover is August (Cloud cover 4).
Average visibility in July
Alta Loma, 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).
