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July Weather in Collinsville, United States

Last updated: June 24, 2025

The average temperature in Collinsville, United States during July is a warm 29°C (84°F). Expect minimums of 17°C (64°F) and maximums soaring up to 42°C (108°F) on particularly hot days. Rainfall amounts to 47 mm (1.9 in) across about 6 days, with humidity levels averaging a comfortable 73%. Enjoy the tropical climate while staying hydrated!

July Temperature in Collinsville

In July in Collinsville, the average temperature is 29°C (84°F), with maximums reaching up to 42°C (108°F) and minimums dipping as low as 17°C (64°F). This warm weather makes it an ideal time for travelers seeking sun and outdoor adventures.

July Weather in Collinsville: Daily Temperature Highs, Lows, and Averages

The chart illustrates July temperature patterns in Collinsville, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Collinsville, July typically has an average temperature of 29°C (84°F), with highs reaching up to 42°C (108°F) and lows dropping to around 17°C (64°F).
JanFebMarAprMayJunJulAugSepOctNovDec454758637380848378665550
Data source: Temperature data for Collinsville 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 Collinsville

In Collinsville in July, the precipitation amount is 47 mm (1.9 in) over the course of 6 days.

July Precipitation Trends in Collinsville

The chart displays monthly precipitation patterns in Collinsville, 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 Collinsville, July typically receives around 47 mm (1.9 inches) of precipitation spread over approximately 6 days.
JanFebMarAprMayJunJulAugSepOctNovDec578811510613910548941211435359
Data source: Precipitation data for July generated using information from the Copernicus Climate Change Service.
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July Humidity in Collinsville

In Collinsville in July, humidity is 73%. With an average temperature of 29°C (84°F), this humidity feels like a warm blanket wrapped around you, making travel slightly uncomfortable as you sweat and seek shade, yet still inviting you to explore the vibrant local culture and activities.

July Average Humidity in Collinsville

This chart illustrates the average monthly humidity levels in Collinsville, 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 Collinsville is approximately 73%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec80%79%78%78%81%78%73%66%65%72%82%87%
Data source: Humidity data for July generated using information from the Copernicus Climate Change Service.

July UV Index in Collinsville

In Collinsville in July, the maximum UV index reaches 11, which corresponds to an extreme Exposure Category. With a time to burn of just 10 minutes, it's essential to take precautions. For more details, you can check the Hourly UV Index in Collinsville.

Maximum UV Index Levels in Collinsville for July

The chart shows the monthly maximum UV Index (UVI) for Collinsville 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 Collinsville typically reaches 11, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec468101111111110864
Data source: Collinsville 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 Collinsville Compares to Other Months

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

This table compares monthly weather conditions in Collinsville, showing how July’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather7°C (45°F)57 mm (2.2 inches)80%moderate
February Weather8°C (47°F)88 mm (3.5 inches)79%high
March Weather15°C (59°F)115 mm (4.5 inches)78%very high
April Weather17°C (64°F)106 mm (4.2 inches)78%very high
May Weather23°C (73°F)138 mm (5.5 inches)81%extreme
June Weather27°C (81°F)105 mm (4.1 inches)78%extreme
July Weather29°C (84°F)47 mm (1.9 inches)73%extreme
August Weather29°C (84°F)94 mm (3.7 inches)66%extreme
September Weather25°C (78°F)121 mm (4.7 inches)65%very high
October Weather19°C (66°F)143 mm (5.6 inches)72%very high
November Weather13°C (55°F)53 mm (2.1 inches)82%high
December Weather10°C (50°F)59 mm (2.3 inches)87%moderate

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