Lake Forest, IL weather
Today, hourly and 7-day forecast, sunrise and sunset, and the normal climate month by month
Weather in Lake Forest now
Loading the National Weather Service forecast…
Lake Forest weather by the hour
Lake Forest weather for the next 7 days
Source: National Weather Service (NOAA) · forecast for the coordinates of Lake Forest.
This week in Lake Forest
Sunrise, sunset and moon in Lake Forest
What is the weather usually like in Lake Forest?
Köppen climate classification, calculated from the 1991–2020 normals
- Julywarmest month · 83°F average high
- Januarycoldest month · 16°F average low
- 39.5 inprecipitation per year · 1,004 mm
- 33.6 insnowfall per year · 85 cm
Average high and low temperature (°F)
Average precipitation (inches)
Best time to visit Lake Forest: June to September, with mild temperatures and fewer rainy days.
Source: NOAA NCEI U.S. Climate Normals 1991–2020, station CHICAGO BOTANIC GARDEN, IL US (USC00111497), adjusted for the elevation of Lake Forest.
Lake Forest weather month by month
Sunrise and sunset in Lake Forest through the year
| Month | Sunrise | Sunset | Daylight |
|---|---|---|---|
| January | 7:15 AM | 4:46 PM | 9 h 30 min |
| February | 6:45 AM | 5:25 PM | 10 h 39 min |
| March | 7:01 AM | 6:59 PM | 11 h 57 min |
| April | 6:08 AM | 7:34 PM | 13 h 25 min |
| May | 5:28 AM | 8:07 PM | 14 h 38 min |
| June | 5:12 AM | 8:31 PM | 15 h 18 min |
| July | 5:27 AM | 8:27 PM | 15 h 0 min |
| August | 5:57 AM | 7:53 PM | 13 h 56 min |
| September | 6:30 AM | 7:02 PM | 12 h 32 min |
| October | 7:03 AM | 6:11 PM | 11 h 8 min |
| November | 6:40 AM | 4:31 PM | 9 h 50 min |
| December | 7:11 AM | 4:21 PM | 9 h 9 min |
Times for the 15th of each month, local time (America/Chicago).
What is the weather like in Lake Forest?
Lake Forest has a hot-summer humid continental climate. The warmest month is July, with an average high of 83°F (29°C), and the coldest is January, with average lows of 16°F (-9°C).
It gets about 39.5 inches (1,004 mm) of precipitation a year. The wettest month is May and the driest is February. Snow is common: about 34 inches fall in an average year.
The best time to visit Lake Forest is June to September. At 663 ft of elevation, nights are mild most of the year. The live forecast on this page comes from the National Weather Service and the climate averages from NOAA’s 1991–2020 U.S. Climate Normals.
More about Lake Forest
Weather in towns near Lake Forest
Questions about the weather in Lake Forest
What is the hottest month in Lake Forest?
July, with an average high of 83°F (29°C).
What is the coldest month in Lake Forest?
January, with an average low of 16°F (-9°C).
How much does it rain in Lake Forest?
About 39.5 inches (1,004 mm) a year; the wettest month is May.
Does it snow in Lake Forest?
Yes, about 34 inches of snow fall in an average year.
When is the best time to visit Lake Forest?
June to September, when temperatures are most pleasant and rainy days are fewer.
What climate does Lake Forest have?
Hot-summer humid continental (Köppen Dfa).
What is the weather like in Lake Forest in November?
Highs average 49°F and lows 32°F, with about 2.6 inches of precipitation.
What time is sunrise in Lake Forest?
Around 6:40 AM in mid-November, and sunset around 4:31 PM. Today’s exact times are shown above.
Where does this Lake Forest weather forecast come from?
From the National Weather Service (NOAA), the official U.S. weather agency, for the exact coordinates of Lake Forest.
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