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April Weather in Lake Forest, United States

Last updated: June 24, 2025

In Lake Forest, United States, the average temperature in April hovers around 17°C (62°F). Expect temperatures to vary, with a minimum of 9°C (49°F) and a peak of 35°C (95°F). During this month, you can anticipate a total precipitation of 27 mm (1.1 in) over approximately 3 days, accompanied by an average humidity of 70%.

April Temperature in Lake Forest

In April in Lake Forest, the average temperature is 17°C (62°F). Maximums can reach up to 35°C (95°F), while minimums can drop to as low as 9°C (49°F). This makes Lake Forest a great destination for travelers seeking mild to warm weather, perfect for exploring and enjoying outdoor activities.

April Weather in Lake Forest: Daily Temperature Highs, Lows, and Averages

The chart illustrates April temperature patterns in Lake Forest, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Lake Forest, April typically has an average temperature of 17°C (62°F), with highs reaching up to 35°C (95°F) and lows dropping to around 9°C (49°F).
JanFebMarAprMayJunJulAugSepOctNovDec565658626368737472686256
Data source: Temperature data for Lake Forest 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.

April Precipitation in Lake Forest

In Lake Forest in April, the total precipitation amount is 27 mm (1.1 in) over the course of 3 days.

April Precipitation Trends in Lake Forest

The chart displays monthly precipitation patterns in Lake Forest, with values for each month alongside April’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how April’s conditions compare to those of other months. In Lake Forest, April typically receives around 27 mm (1.1 inches) of precipitation spread over approximately 3 days.
JanFebMarAprMayJunJulAugSepOctNovDec71606827131223102574
Data source: Precipitation data for April generated using information from the Copernicus Climate Change Service.
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April Humidity in Lake Forest

In Lake Forest in April humidity is 70%. With an average temperature of 17°C (62°F), this humidity feels like a comfortable balance, creating a refreshing atmosphere for traveling, where the warmth is pleasantly offset by the moist air, making it ideal for leisurely strolls and exploration.

April Average Humidity in Lake Forest

This chart illustrates the average monthly humidity levels in Lake Forest, with April’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In April, average humidity in Lake Forest is approximately 70%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec74%79%75%71%70%72%73%69%68%67%68%71%
Data source: Humidity data for April generated using information from the Copernicus Climate Change Service.

April UV Index in Lake Forest

In Lake Forest in April, the maximum UV index reaches 10, which corresponds to a very high Exposure Category. With a time to burn of just 15 minutes, it's crucial to take precautions. For more detailed information, you can check the Hourly UV Index in Lake Forest.

Maximum UV Index Levels in Lake Forest for April

The chart shows the monthly maximum UV Index (UVI) for Lake Forest in April, 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 April, the maximum UV index in Lake Forest typically reaches 10, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec468101111111010754
Data source: Lake Forest April 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 April Weather in Lake Forest Compares to Other Months

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

This table compares monthly weather conditions in Lake Forest, showing how April’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather13°C (56°F)71 mm (2.8 inches)74%moderate
February Weather13°C (56°F)60 mm (2.3 inches)79%high
March Weather14°C (58°F)68 mm (2.7 inches)75%very high
April Weather17°C (62°F)27 mm (1.1 inches)70%very high
May Weather17°C (64°F)13 mm (0.5 inches)70%extreme
June Weather20°C (68°F)1 mm (0.0 inches)72%extreme
July Weather23°C (73°F)2 mm (0.1 inches)73%extreme
August Weather23°C (74°F)2 mm (0.1 inches)69%very high
September Weather22°C (72°F)3 mm (0.1 inches)68%very high
October Weather20°C (69°F)10 mm (0.4 inches)67%high
November Weather17°C (62°F)25 mm (1.0 inches)68%moderate
December Weather13°C (56°F)74 mm (2.9 inches)71%moderate

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