July weather forecast
San Luis Obispo, CA

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Beautiful blue water surrounded by scenic mountain ranges at the San Luis Obispo, California
Beautiful blue water surrounded by scenic mountain ranges at the San Luis Obispo, California

Weather in July

July, the same as June, is a moderately hot summer month in San Luis Obispo, California, with temperature in the range of an average low of 58.8°F (14.9°C) and an average high of 80.1°F (26.7°C).

Temperature

The commencement of July introduces an average high-temperature of a still warm 80.1°F (26.7°C), closely mirroring the preceding month. In the month of July, San Luis Obispo records a consistent average low-temperature of 58.8°F (14.9°C).

Humidity

In San Luis Obispo, the average relative humidity in July is 61%.

Rainfall

In San Luis Obispo, in July, during 2.3 rainfall days, 0.12" (3mm) of precipitation is typically accumulated. Throughout the year, in San Luis Obispo, there are 57 rainfall days, and 9.57" (243mm) of precipitation is accumulated.

Daylight

In July, the average length of the day is 14h and 16min.
On the first day of July, sunrise is at 5:51 am and sunset at 8:21 pm. On the last day of the month, sunrise is at 6:11 am and sunset at 8:06 pm PDT.

Sunshine

The months with the most sunshine are June through August, with an average of 12h of sunshine.

UV index

In San Luis Obispo, the average daily maximum UV index in July is 5. A UV Index reading of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV rays for ordinary individuals.
Note: During July, 5 as the daily maximum UV index converts into the following advice:
Put precautions into practice - Guidance to elude sunburn is provided. The Sun's radiation is especially intense around midday; try to stay in shade during this period. Outfit yourself in sun-safe attire, like long sleeves, pants, a hat, and UV-blocking sunglasses.
Updated: Jul 30, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What are July temperatures?

During July, San Luis Obispo experiences an average high-temperature of 80.1°F (26.7°C) and a low-temperature of 58.8°F (14.9°C).

What is the average humidity in July?

In San Luis Obispo, the average relative humidity in July is 61%.

How much does it rain in July?

In San Luis Obispo, in July, during 2.3 rainfall days, 0.12" (3mm) of precipitation is typically accumulated.

How many hours of daylight does San Luis Obispo have in July?

In July, the average day length is 14h and 16min.

What time are sunrise and sunset in July?

In July, on the first day of the month, sunrise is at 5:51 am and sunset at 8:21 pm. On the last day of the month, sunrise is at 6:11 am and sunset at 8:06 pm PDT.

What are the months with the most sunshine?

June through August, with an average of 12h of sunshine, are months with the most sunshine.

How many hours of sunshine does San Luis Obispo have in July?

The average sunshine duration in July is 12h.

How high is the UV index in July in San Luis Obispo?

The average daily maximum UV index in July is 5. A UV Index reading of 3 to 5 represents a moderate vulnerability from exposure to the Sun's UV radiation.
Average humidity
Average rainfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in July
San Luis Obispo, CA

Average temperature in July - San Luis Obispo, CA
  • Average high temperature in July: 80.1°F

The warmest month (with the highest average high temperature) is August (80.2°F).
The month with the lowest average high temperature is December (60.3°F).

  • Average low temperature in July: 58.8°F

The month with the highest average low temperature is September (60.3°F).
The coldest month (with the lowest average low temperature) is February (45.7°F).

Average pressure in July
San Luis Obispo, CA

Average pressure in July - San Luis Obispo, CA
  • Average pressure in July: 29.93"Hg

The month with the highest atmospheric pressure is January (30.12"Hg).
The months with the lowest atmospheric pressure are June, August and September (29.91"Hg).

Average wind speed in July
San Luis Obispo, CA

Average wind speed in July - San Luis Obispo, CA
  • Average wind speed in July: 5.5mph

The windiest months (with the highest average wind speed) are April and May (6.8mph).
The calmest months (with the lowest average wind speed) are August and September (5.3mph).

Average humidity in July
San Luis Obispo, CA

Average humidity in July - San Luis Obispo, CA
  • Average humidity in July: 61%

The month with the highest relative humidity is March (69%).
The months with the lowest relative humidity are September and October (57%).

Average rainfall in July
San Luis Obispo, CA

Average rainfall in July - San Luis Obispo, CA
  • Average rainfall in July: 0.12"

The wettest month (with the highest rainfall) is March (2.01").
The driest months (with the least rainfall) are June and August (0.04").

Average rainfall days in July
San Luis Obispo, CA

Average rainfall days in July - San Luis Obispo, CA
  • Average rainfall days in July: 2.3 days

The month with the highest number of rainy days is March (10.5 days).
The month with the least rainy days is August (0.6 days).

Average daylight in July /
Average sunshine in July
San Luis Obispo, CA

Average daylight in July / Average sunshine in July - San Luis Obispo, CA
  • Average daylight in July: 14h and 2min

The month with the longest days is June (Average daylight: 14h and 30min).
The month with the shortest days is December (Average daylight: 9h and 48min).

  • Average sunshine in July: 12h and 0min

The months with the most sunshine are June, July and August (Average sunshine: 12h and 0min).
The months with the least sunshine are February and December (Average sunshine: 6h and 30min).

Average sunshine days in July
San Luis Obispo, CA

Average sunshine days in July - San Luis Obispo, CA
  • Average sunshine days in July: 27.4 days

The month with the most sunshine days is August (29.2 days).
The month with the least sunshine days is February (19.1 days).

Average UV index in July
San Luis Obispo, CA

Average UV index in July - San Luis Obispo, CA
  • Average UV index in July: 5

The months with the highest UV index are June and August (UV index 6).
The month with the lowest UV index is February (UV index 3).

Average cloud cover in July
San Luis Obispo, CA

Average cloud cover in July - San Luis Obispo, CA
  • Average cloud cover in July: 7

The month with the most cloud cover is March (Cloud cover 28).
The months with the least cloud cover are August and September (Cloud cover 6).

Average visibility in July
San Luis Obispo, CA

Average visibility in July - San Luis Obispo, 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).

San Luis Obispo, California, USA

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