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Lake Forest (CA) Weather and Climate: A Comprehensive Guide

The climate in Lake Forest is marked by big temperature swings throughout the year. Temperatures range from very warm during the warmest months to pleasant in the cooler months. Lake Forest has a dry climate with relatively low precipitation levels. Now, let’s explore all the climate details to give you a full picture.

Average maximum day and minimum night temperature

In Lake Forest, temperatures differ significantly between summer and winter months. On average, daytime temperatures range from a very warm 31°C in August to a pleasant 19°C in February.

Nighttime temperatures can drop, with average lows reaching 8°C in February. Check out our detailed temperature page for more information.

Temperature ranges by month

Precipitation and rainy days

Lake Forest's climate is marked by below-average rainfall, accumulating 272 mm of precipitation yearly. The seasons in Lake Forest, bring significant changes in precipitation. The wettest month, December, receives moderate rainfall, with an average of 77 mm of precipitation. This rainfall is distributed across 8 rainy days.

In contrast, the driest month, June, experiences much less rainfall, totaling 0.4 mm over 0 rainy days. These distinct seasonal differences provide diverse experiences throughout the year. For more details, please visit our Lake Forest Precipitation page.

The mean monthly precipitation over the year, including rain, hail and snow

Sunshine over the year

In Lake Forest, summer days are longer and more sunny, with daily sunshine hours peaking at 12.3 hours in July. As the darker season arrives, the brightness of the sun becomes less. January sees a soft sun for only 6.6 hours per average day. Visit our detailed sunshine hours page for more information.

Monthly hours of sunshine

Data from: Corona, the United States of America (27 KM, 17 Miles).

Daily hours of sunshine

Data from: Corona, the United States of America (27 KM, 17 Miles).

Forecast for Lake Forest (CA)

Fri   Dec 27
18°C | 9°C
E 3 m/s
broken clouds and no rain

broken clouds and no rain

Sat   Dec 28
21°C | 8°C
SW 1 m/s
broken clouds and no rain

broken clouds and no rain

Sun   Dec 29
20°C | 9°C
SW 2 m/s
almost clear and no rain

almost clear and no rain

The best time of year to visit Lake Forest in the United States of America

During the months of January, February, March, April, May and November you are most likely to experience good weather with pleasant average temperatures that fall between 20°C and 26°C.

Other facts from our historical weather data:
  • Which is the warmest month in Lake Forest?
    August has an average maximum temperature of 31°C and is the warmest month of the year.
  • Which is the coldest month in Lake Forest?
    The coldest month is February with an average maximum temperature of 19°C.
  • Which is the wettest month in Lake Forest?
    December tops the wettest month list with 77 mm of rainfall.
  • Which is the driest month in Lake Forest?
    June is the driest month with 0 mm of precipitation.
  • Which is the sunniest month in Lake Forest?
    July is the sunniest month with an average of 369 hours of sunshine.

  • No idea where to travel to this year? We have a tool that recommends destinations based on your ideal conditions. Find out where to go with our weather planner.