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July Weather in Crystal Lake, United States

Last updated: June 24, 2025

In Crystal Lake, United States, the average temperature in July hovers around 23°C (74°F). However, temperatures can dip as low as 13°C (55°F) or soar to a scorching 37°C (99°F). Expect about 141 mm (5.6 in) of precipitation spread across 13 days, with an average humidity of 62%, adding a touch of tropical allure to the air.

July Temperature in Crystal Lake

In July in Crystal Lake, the average temperature is 23°C (74°F), with maximums reaching 37°C (99°F) and minimums dropping as low as 13°C (55°F). This pleasant climate makes it an ideal destination for travelers looking to enjoy a warm getaway.

July Weather in Crystal Lake: Daily Temperature Highs, Lows, and Averages

The chart illustrates July temperature patterns in Crystal Lake, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Crystal Lake, July typically has an average temperature of 23°C (74°F), with highs reaching up to 37°C (99°F) and lows dropping to around 13°C (55°F).
JanFebMarAprMayJunJulAugSepOctNovDec303238485969747366554233
Data source: Temperature data for Crystal Lake 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 Crystal Lake

In Crystal Lake in July, the precipitation amount is 141 mm (5.6 in) spread over 13 days.

July Precipitation Trends in Crystal Lake

The chart displays monthly precipitation patterns in Crystal Lake, 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 Crystal Lake, July typically receives around 141 mm (5.6 inches) of precipitation spread over approximately 13 days.
JanFebMarAprMayJunJulAugSepOctNovDec698885128110801418610113892121
Data source: Precipitation data for July generated using information from the Copernicus Climate Change Service.
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July Humidity in Crystal Lake

In Crystal Lake in July humidity is 62%. With an average temperature of 23°C (74°F), this humidity feels like a warm, slightly sticky embrace, making it essential for travelers to stay hydrated and wear breathable clothing while exploring.

July Average Humidity in Crystal Lake

This chart illustrates the average monthly humidity levels in Crystal Lake, 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 Crystal Lake is approximately 62%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec84%82%81%78%70%69%62%65%68%74%82%80%
Data source: Humidity data for July generated using information from the Copernicus Climate Change Service.

July UV Index in Crystal Lake

In Crystal Lake in July, the maximum UV index is 9, which corresponds to a very high Exposure Category. The time to burn is just 15 minutes, so it's essential to take precautions. For detailed information, you can check the Hourly UV Index in Crystal Lake.

Maximum UV Index Levels in Crystal Lake for July

The chart shows the monthly maximum UV Index (UVI) for Crystal Lake 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 Crystal Lake typically reaches 9, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec3568910998642
Data source: Crystal Lake 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 Crystal Lake Compares to Other Months

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

This table compares monthly weather conditions in Crystal Lake, showing how July’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-1°C (30°F)69 mm (2.7 inches)84%moderate
February Weather0°C (32°F)88 mm (3.5 inches)82%moderate
March Weather3°C (38°F)85 mm (3.4 inches)81%high
April Weather9°C (49°F)128 mm (5.0 inches)78%very high
May Weather15°C (59°F)110 mm (4.3 inches)69%very high
June Weather20°C (69°F)79 mm (3.1 inches)69%very high
July Weather23°C (74°F)141 mm (5.6 inches)62%very high
August Weather23°C (73°F)86 mm (3.4 inches)65%very high
September Weather19°C (66°F)101 mm (4.0 inches)68%very high
October Weather13°C (56°F)138 mm (5.4 inches)74%high
November Weather5°C (42°F)92 mm (3.6 inches)82%moderate
December Weather1°C (34°F)121 mm (4.8 inches)80%low

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