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July Weather in San Luis, United States

Last updated: June 24, 2025

In July, the average temperature in San Luis, United States is a pleasant 18°C (65°F). Expect a minimum chill of 7°C (45°F) and a warm maximum reaching up to 32°C (89°F). During this time, precipitation averages around 71 mm (2.8 in) spread over 14 days, contributing to an average humidity level of 54%.

July Temperature in San Luis

In July in San Luis, the average temperature is 18°C (65°F). Maximum temperatures can reach 32°C (89°F) while minimums can drop to as low as 7°C (45°F). This pleasant range makes it an ideal time for travelers to explore and enjoy outdoor activities.

July Weather in San Luis: Daily Temperature Highs, Lows, and Averages

The chart illustrates July temperature patterns in San Luis, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In San Luis, July typically has an average temperature of 18°C (65°F), with highs reaching up to 32°C (89°F) and lows dropping to around 7°C (45°F).
JanFebMarAprMayJunJulAugSepOctNovDec222534415161646357453525
Data source: Temperature data for San Luis generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

July Precipitation in San Luis

In San Luis in July, the precipitation amount is 71 mm (2.8 in) over a duration of 14 days.

July Precipitation Trends in San Luis

The chart displays monthly precipitation patterns in San Luis, with values for each month alongside July’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how July’s conditions compare to those of other months. In San Luis, July typically receives around 71 mm (2.8 inches) of precipitation spread over approximately 14 days.
JanFebMarAprMayJunJulAugSepOctNovDec232537354228714531271723
Data source: Precipitation data for July generated using information from the Copernicus Climate Change Service.
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July Humidity in San Luis

In San Luis in July, humidity is 54%. With an average temperature of 18°C (65°F), this humidity feels like a light, refreshing breeze, making it comfortable for traveling and exploring the area without the discomfort of excessive stickiness.

July Average Humidity in San Luis

This chart illustrates the average monthly humidity levels in San Luis, with July’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In July, average humidity in San Luis is approximately 54%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec84%84%75%68%62%55%54%61%70%78%81%85%
Data source: Humidity data for July generated using information from the Copernicus Climate Change Service.

July UV Index in San Luis

In San Luis in July, the maximum UV index reaches 13, which corresponds to an extreme Exposure Category. With a time to burn of just 10 minutes, it's crucial to take protective measures. For detailed information, you can check the Hourly UV Index in San Luis.

Maximum UV Index Levels in San Luis for July

The chart shows the monthly maximum UV Index (UVI) for San Luis in July, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues. In July, the maximum UV index in San Luis typically reaches 13, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec4710111213131211854
Data source: San Luis July UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

  •  Extreme (11+): Avoid the sun, stay in shade.
  •  Very High (8-10): Limit sun exposure.
  •  High (6-7): Use SPF 30+ and protective clothing.
  •  Moderate (3-5): Midday shade recommended.
  •  Low (0-2): No protection needed.

How July Weather in San Luis Compares to Other Months

Weather in San Luis varies notably across the year, with each month offering distinct climate conditions. This page compares July’s weather to other months in San Luis, focusing on differences in temperature, rainfall, humidity, and UV levels.

This table compares monthly weather conditions in San Luis, showing how July’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-5°C (23°F)23 mm (0.9 inches)84%moderate
February Weather-4°C (25°F)25 mm (1.0 inches)84%high
March Weather1°C (34°F)37 mm (1.5 inches)74%very high
April Weather5°C (42°F)35 mm (1.4 inches)68%extreme
May Weather10°C (51°F)42 mm (1.6 inches)62%extreme
June Weather16°C (62°F)28 mm (1.1 inches)55%extreme
July Weather18°C (65°F)71 mm (2.8 inches)54%extreme
August Weather17°C (63°F)45 mm (1.8 inches)61%extreme
September Weather14°C (57°F)31 mm (1.2 inches)70%extreme
October Weather7°C (45°F)27 mm (1.1 inches)78%very high
November Weather2°C (35°F)17 mm (0.7 inches)81%moderate
December Weather-4°C (25°F)23 mm (0.9 inches)85%moderate

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