July weather forecastGilroy, CA

July
Weather in July
July, the same as June, is a moderately hot summer month in Gilroy, California, with an average temperature ranging between max 84.9°F (29.4°C) and min 54°F (12.2°C).Temperature
Gilroy in July witnesses an average high-temperature of a still warm 84.9°F (29.4°C), indicating a slight variation from June's 80.8°F (27.1°C). Throughout July nights, Gilroy reports a steady thermal contrast from the day, with an average low-temperature of 54°F (12.2°C).Heat index
For most parts of July, the heat index is calculated to be a tropical 87.8°F (31°C). If one stays active during extended exposure, it might induce fatigue and result in heat cramps.It is worth noting that heat index values are gauged for conditions in the shade and light breezes. The heat index may experience an enhancement of 15 Fahrenheit (8 Celsius) degrees under direct sunlight.
Note: The heat index, also known as 'felt air temperature' or 'feels like', is a value derived by merging air temperature with the humidity to convey how the climate feels. One's weather perception can be influenced by a range of factors including metabolic differences, being pregnant, and their level of physical activity. Be mindful that being in direct sunlight might mean feeling hotter, with the heat index rising by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially vital to children. Young individuals usually face more risks than adults due to their lower sweat production. Their large skin surface area relative to their tiny bodies and high heat production from their activities adds to their risk.
Humidity
In Gilroy, the average relative humidity in July is 58%.Rainfall
In Gilroy, rain does not fall in June through August.Daylight
The average length of the day in July is 14h and 25min.On the first day of the month, sunrise is at 5:50 am and sunset at 8:29 pm. On the last day of July, sunrise is at 6:11 am and sunset at 8:13 pm PDT.
Sunshine
With an average of 12.1h of sunshine, July has the most sunshine of the year.UV index
June through August, with an average maximum UV index of 6, are months with the highest UV index. A UV Index reading of 6 to 7 represents a high health hazard from unprotected exposure to Sun's UV rays for average individuals.Note: In July, a daily maximum UV index of 6 leads to the following instructions:
Ward off overexposure. Defence against solar harm is crucial. UV radiation from the Sun is most intense between 10 a.m. and 4 p.m. Try to avoid direct sunlight during this period. Combat UV radiation's detrimental effects with sun-safe clothing and UV-blocking eyewear.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in July
Gilroy, CA
- Average high temperature in July: 84.9°F
The warmest month (with the highest average high temperature) is August (85.1°F).
The month with the lowest average high temperature is December (57.6°F).
- Average low temperature in July: 54°F
The months with the highest average low temperature are August and September (54.1°F).
The coldest months (with the lowest average low temperature) are February and March (40.6°F).
Average pressure in July
Gilroy, CA
- Average pressure in July: 29.93"Hg
The month with the highest atmospheric pressure is January (30.14"Hg).
The months with the lowest atmospheric pressure are June, August and September (29.92"Hg).
Average wind speed in July
Gilroy, CA
- Average wind speed in July: 4.7mph
The windiest month (with the highest average wind speed) is May (5.3mph).
The calmest month (with the lowest average wind speed) is November (3.9mph).
Average humidity in July
Gilroy, CA
- Average humidity in July: 58%
The month with the highest relative humidity is March (74%).
The month with the lowest relative humidity is September (57%).
Average rainfall in July
Gilroy, CA
- Average rainfall in July: 0"
The wettest month (with the highest rainfall) is December (0.83").
The driest months (with the least rainfall) are June, July and August (0").
Average rainfall days in July
Gilroy, CA
- Average rainfall days in July: 1.1 days
The month with the highest number of rainy days is March (8.3 days).
The month with the least rainy days is August (0.6 days).
Average daylight in July /
Average sunshine in July
Gilroy, CA
- Average daylight in July: 14h and 24min
The month with the longest days is June (Average daylight: 14h and 42min).
The month with the shortest days is December (Average daylight: 9h and 42min).
- 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 December (Average sunshine: 6h and 0min).
Average sunshine days in July
Gilroy, CA
- Average sunshine days in July: 29.9 days
The month with the most sunshine days is July (29.9 days).
The month with the least sunshine days is March (21.4 days).
Average UV index in July
Gilroy, CA
- Average UV index in July: 6
The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 3).
Average cloud cover in July
Gilroy, CA
- Average cloud cover in July: 7
The month with the most cloud cover is March (Cloud cover 35).
The month with the least cloud cover is July (Cloud cover 7).
Average visibility in July
Gilroy, 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).





