What is the weather in Lake Forest right now?

Current weather in Lake Forest is light rain.

Where can I find the hourly weather forecast for Lake Forest?

This page shows hourly weather forecast for Lake Forest, including temperature, wind, precipitation, humidity and cloud cover.

Is the weather forecast for Lake Forest updated regularly?

Weather data for Lake Forest is updated regularly with the latest available observations and forecasts.

Now · 11:09 AM

Lake Forest Weather & Hourly Forecast

United States · Illinois · 60045

77°F

Light rain

Feels like: 78°F

💧 Humidity 76% 🌡 Pressure 29.94 inHg 💨 Wind 12 mph 👁 Visibility 6.2 mi ☁ Clouds 100% ☀️ UV index 2.9 · Low 🌅 Sunrise 6:15 AM 🌇 Sunset 7:28 PM

Hourly Forecast for Lake Forest

Today

12:00 PM

Light rain

77° 💧 0.01 in 💨 12 mph H 76%29.94 inHg

3:00 PM

Overcast

84° 💧 None 💨 13 mph H 65%29.88 inHg

6:00 PM

Overcast

85° 💧 None 💨 9 mph H 65%29.85 inHg

9:00 PM

Mostly cloudy night

80° 💧 None 💨 4 mph H 81%29.88 inHg

Tomorrow

12:00 AM

Mostly cloudy night

79° 💧 None 💨 5 mph H 86%29.85 inHg

3:00 AM

Overcast night

79° 💧 None 💨 4 mph H 85%29.88 inHg

6:00 AM

Mostly cloudy night

76° 💧 0.01 in 💨 3 mph H 81%29.91 inHg

9:00 AM

Overcast

77° 💧 None 💨 7 mph H 74%29.91 inHg

12:00 PM

Overcast

86° 💧 None 💨 9 mph H 59%29.91 inHg

3:00 PM

Overcast

86° 💧 None 💨 7 mph H 61%29.91 inHg

6:00 PM

Overcast

86° 💧 None 💨 5 mph H 68%29.88 inHg

9:00 PM

Overcast night

80° 💧 None 💨 4 mph H 79%29.91 inHg

Wednesday

12:00 AM

Mostly cloudy night

79° 💧 None 💨 5 mph H 80%29.88 inHg

3:00 AM

Partly cloudy night

80° 💧 None 💨 9 mph H 63%29.85 inHg

6:00 AM

Mostly clear night

80° 💧 None 💨 14 mph H 52%29.85 inHg

9:00 AM

Sunny

84° 💧 None 💨 13 mph H 51%29.85 inHg

Today

12:00 PM

Light rain

77° 💧 0.01 in 💨 12 mph H 76%29.94 inHg

1:00 PM

Light rain

79° 💧 0.01 in 💨 12 mph H 72%29.94 inHg

2:00 PM

Overcast

81° 💧 None 💨 13 mph H 68%29.91 inHg

3:00 PM

Overcast

84° 💧 None 💨 13 mph H 65%29.88 inHg

4:00 PM

Overcast

87° 💧 None 💨 13 mph H 62%29.88 inHg

5:00 PM

Overcast

87° 💧 None 💨 11 mph H 61%29.85 inHg

6:00 PM

Overcast

85° 💧 None 💨 9 mph H 65%29.85 inHg

7:00 PM

Overcast

82° 💧 None 💨 6 mph H 72%29.85 inHg

8:00 PM

Overcast night

82° 💧 None 💨 5 mph H 78%29.85 inHg

9:00 PM

Mostly cloudy night

80° 💧 None 💨 4 mph H 81%29.88 inHg

10:00 PM

Mostly cloudy night

80° 💧 None 💨 4 mph H 83%29.88 inHg

11:00 PM

Partly cloudy night

79° 💧 None 💨 5 mph H 85%29.85 inHg

Tomorrow

12:00 AM

Mostly cloudy night

79° 💧 None 💨 5 mph H 86%29.85 inHg

1:00 AM

Mostly cloudy night

81° 💧 None 💨 5 mph H 86%29.85 inHg

2:00 AM

Overcast night

80° 💧 None 💨 5 mph H 85%29.88 inHg

3:00 AM

Overcast night

79° 💧 None 💨 4 mph H 85%29.88 inHg

4:00 AM

Overcast night

79° 💧 None 💨 4 mph H 83%29.88 inHg

5:00 AM

Mostly cloudy night

79° 💧 None 💨 4 mph H 82%29.88 inHg

6:00 AM

Mostly cloudy night

76° 💧 None 💨 3 mph H 81%29.91 inHg

7:00 AM

Light rain

75° 💧 0.01 in 💨 4 mph H 80%29.91 inHg

8:00 AM

Overcast

75° 💧 None 💨 5 mph H 77%29.91 inHg

9:00 AM

Overcast

77° 💧 None 💨 7 mph H 74%29.91 inHg

10:00 AM

Overcast

79° 💧 None 💨 6 mph H 72%29.94 inHg

11:00 AM

Overcast

83° 💧 None 💨 6 mph H 75%29.94 inHg

12:00 PM

Overcast

86° 💧 None 💨 9 mph H 59%29.91 inHg

1:00 PM

Overcast

84° 💧 None 💨 8 mph H 58%29.91 inHg

2:00 PM

Overcast

85° 💧 None 💨 8 mph H 59%29.91 inHg

3:00 PM

Overcast

86° 💧 None 💨 7 mph H 61%29.91 inHg

4:00 PM

Overcast

87° 💧 None 💨 6 mph H 60%29.88 inHg

5:00 PM

Overcast

87° 💧 None 💨 7 mph H 62%29.88 inHg

6:00 PM

Overcast

86° 💧 None 💨 5 mph H 68%29.88 inHg

7:00 PM

Overcast

83° 💧 None 💨 5 mph H 74%29.88 inHg

8:00 PM

Overcast night

82° 💧 None 💨 5 mph H 77%29.88 inHg

9:00 PM

Overcast night

80° 💧 None 💨 4 mph H 79%29.91 inHg

10:00 PM

Overcast night

79° 💧 None 💨 5 mph H 79%29.88 inHg

11:00 PM

Mostly cloudy night

79° 💧 None 💨 6 mph H 79%29.88 inHg

Wednesday

12:00 AM

Mostly cloudy night

79° 💧 None 💨 5 mph H 80%29.88 inHg

1:00 AM

Mostly cloudy night

82° 💧 None 💨 5 mph H 81%29.88 inHg

2:00 AM

Mostly cloudy night

76° 💧 None 💨 5 mph H 81%29.88 inHg

3:00 AM

Partly cloudy night

80° 💧 None 💨 9 mph H 63%29.85 inHg

4:00 AM

Partly cloudy night

81° 💧 None 💨 12 mph H 54%29.85 inHg

5:00 AM

Mostly clear night

80° 💧 None 💨 13 mph H 53%29.85 inHg

6:00 AM

Mostly clear night

80° 💧 None 💨 14 mph H 52%29.85 inHg

7:00 AM

Mostly sunny

79° 💧 None 💨 13 mph H 53%29.85 inHg

8:00 AM

Sunny

81° 💧 None 💨 13 mph H 53%29.88 inHg

9:00 AM

Sunny

84° 💧 None 💨 13 mph H 51%29.85 inHg

10:00 AM

Partly cloudy

85° 💧 None 💨 13 mph H 52%29.88 inHg

11:00 AM

Mostly cloudy

86° 💧 None 💨 11 mph H 50%29.88 inHg

12:00 PM

Partly cloudy

90° 💧 None 💨 12 mph H 45%29.85 inHg

1:00 PM

Partly cloudy

91° 💧 None 💨 13 mph H 44%29.83 inHg

2:00 PM

Mostly cloudy

92° 💧 None 💨 13 mph H 45%29.83 inHg

3:00 PM

Overcast

92° 💧 None 💨 14 mph H 48%29.83 inHg

4:00 PM

Mostly cloudy

91° 💧 None 💨 14 mph H 52%29.83 inHg

5:00 PM

Mostly cloudy

89° 💧 None 💨 11 mph H 58%29.83 inHg

6:00 PM

Mostly cloudy

88° 💧 None 💨 8 mph H 62%29.83 inHg

7:00 PM

Mostly cloudy

85° 💧 None 💨 4 mph H 69%29.83 inHg

8:00 PM

Mostly clear night

84° 💧 None 💨 5 mph H 73%29.83 inHg

9:00 PM

Clear night

83° 💧 None 💨 6 mph H 73%29.83 inHg

10:00 PM

Clear night

83° 💧 None 💨 8 mph H 72%29.83 inHg

11:00 PM

Partly cloudy night

84° 💧 None 💨 10 mph H 69%29.80 inHg

Thursday

12:00 AM

Partly cloudy night

84° 💧 None 💨 11 mph H 60%29.83 inHg

1:00 AM

Partly cloudy night

82° 💧 None 💨 3 mph H 62%29.83 inHg

2:00 AM

Mostly cloudy night

79° 💧 None 💨 2 mph H 67%29.85 inHg

3:00 AM

Mostly cloudy night

78° 💧 None 💨 2 mph H 73%29.85 inHg

4:00 AM

Mostly cloudy night

76° 💧 None 💨 1 mph H 78%29.85 inHg

5:00 AM

Mostly cloudy night

76° 💧 None 💨 3 mph H 79%29.85 inHg

6:00 AM

Mostly cloudy night

75° 💧 None 💨 3 mph H 81%29.85 inHg

7:00 AM

Mostly cloudy

75° 💧 None 💨 2 mph H 80%29.85 inHg

8:00 AM

Overcast

76° 💧 None 💨 2 mph H 76%29.88 inHg

9:00 AM

Overcast

79° 💧 None 💨 4 mph H 66%29.88 inHg

10:00 AM

Overcast

82° 💧 None 💨 4 mph H 61%29.88 inHg

11:00 AM

Mostly cloudy

84° 💧 None 💨 5 mph H 58%29.88 inHg

12:00 PM

Mostly cloudy

86° 💧 None 💨 4 mph H 53%29.88 inHg

1:00 PM

Mostly cloudy

87° 💧 None 💨 4 mph H 54%29.88 inHg

2:00 PM

Partly cloudy

87° 💧 None 💨 4 mph H 55%29.88 inHg

3:00 PM

Mostly cloudy

84° 💧 None 💨 3 mph H 63%29.88 inHg

4:00 PM

Mostly cloudy

85° 💧 None 💨 4 mph H 60%29.88 inHg

5:00 PM

Mostly cloudy

84° 💧 None 💨 1 mph H 61%29.85 inHg

6:00 PM

Mostly cloudy

83° 💧 None 💨 0 mph H 66%29.88 inHg

7:00 PM

Mostly cloudy

79° 💧 None 💨 6 mph H 75%29.88 inHg

8:00 PM

Clear night

77° 💧 None 💨 5 mph H 78%29.88 inHg

9:00 PM

Clear night

76° 💧 None 💨 4 mph H 79%29.88 inHg

10:00 PM

Clear night

76° 💧 None 💨 4 mph H 81%29.88 inHg

11:00 PM

Clear night

75° 💧 None 💨 6 mph H 84%29.91 inHg

Friday

12:00 AM

Mostly clear night

75° 💧 None 💨 6 mph H 83%29.91 inHg

1:00 AM

Mostly clear night

74° 💧 None 💨 5 mph H 86%29.91 inHg

2:00 AM

Partly cloudy night

73° 💧 None 💨 6 mph H 87%29.91 inHg

3:00 AM

Partly cloudy night

73° 💧 None 💨 6 mph H 87%29.91 inHg

4:00 AM

Partly cloudy night

73° 💧 None 💨 7 mph H 87%29.91 inHg

5:00 AM

Mostly cloudy night

73° 💧 None 💨 4 mph H 88%29.91 inHg

6:00 AM

Mostly cloudy night

72° 💧 None 💨 11 mph H 89%29.91 inHg

7:00 AM

Mostly cloudy

71° 💧 None 💨 13 mph H 89%29.97 inHg

8:00 AM

Mostly sunny

74° 💧 None 💨 13 mph H 84%29.97 inHg

9:00 AM

Mostly sunny

76° 💧 None 💨 10 mph H 78%30.00 inHg

10:00 AM

Partly cloudy

78° 💧 None 💨 12 mph H 73%29.97 inHg

11:00 AM

Mostly cloudy

79° 💧 None 💨 10 mph H 68%29.97 inHg

In Lake Forest and, more broadly, across the state of Illinois: The rest of the day will be mostly sunny with a few clouds drifting across the sky. Temperatures will remain hot, ranging from 85 to 92 degrees Fahrenheit. Moderate south winds are expected, with sustained speeds around 14 mph and gusts reaching up to 34 mph. No precipitation is anticipated, so outdoor plans can proceed without concern for rain. It will be a warm afternoon, and the breezy conditions may bring some relief from the heat at times. Be sure to stay hydrated and protect yourself from the sun if spending extended periods outdoors. The weather is expected to remain dry through the evening, with temperatures gradually cooling but staying comfortably warm.

15-Day Weather Outlook for Lake Forest

TomorrowTomorrow

Light rain 87°/75° 💧 0.01 in 💨 9 mph

Wednesday, Sep 2Wed Sep 2

Partly cloudy 92°/76° 💧 None 💨 14 mph

Thursday, Sep 3Thu Sep 3

Mostly cloudy 87°/75° 💧 None 💨 11 mph

Friday, Sep 4Fri Sep 4

Moderate rain 79°/71° 💧 0.50 in 💨 13 mph

Saturday, Sep 5Sat Sep 5

Light rain 78°/70° 💧 0.09 in 💨 9 mph

Sunday, Sep 6Sun Sep 6

Overcast 74°/69° 💧 None 💨 11 mph

Monday, Sep 7Mon Sep 7

Overcast 77°/67° 💧 None 💨 9 mph

Tuesday, Sep 8Tue Sep 8

Light rain 81°/69° 💧 0.09 in 💨 9 mph

Wednesday, Sep 9Wed Sep 9

Light rain 74°/69° 💧 0.01 in 💨 12 mph

Thursday, Sep 10Thu Sep 10

Sunny 75°/67° 💧 None 💨 10 mph

Friday, Sep 11Fri Sep 11

Partly cloudy 82°/69° 💧 None 💨 10 mph

Saturday, Sep 12Sat Sep 12

Light rain 75°/69° 💧 0.02 in 💨 11 mph

Sunday, Sep 13Sun Sep 13

Light rain 85°/70° 💧 0.21 in 💨 16 mph

Monday, Sep 14Mon Sep 14

Light rain 74°/59° 💧 0.03 in 💨 19 mph

Tuesday, Sep 15Tue Sep 15

Mostly cloudy 70°/60° 💧 None 💨 10 mph

TEMPERATURE OUTLOOK

Temperature & Weather Trends in Lake Forest

Vertical axis: °F · Color based on temperature

AIR QUALITY FORECAST

Air Quality Forecast for Lake Forest

Hourly forecast · Updated every 2 hours

Fair

Nearest forecast value 12:00 PM

PM2.5 Fine particles Good 8,5µg/m³

Microscopic particles that can penetrate deep into the lungs. Elevated concentrations can especially affect children, older adults and people with respiratory conditions.

PM10 Particulate matter Good 8,9µg/m³

Includes dust, pollen and other airborne particles. High concentrations may irritate the respiratory system.

O₃ Ozone Fair 83,4µg/m³

Ground-level ozone can irritate the eyes and respiratory system when concentrations are elevated.

NO₂ Nitrogen dioxide Good 2,4µg/m³

A gas emitted mainly by traffic and some industrial activity. High exposure can affect respiratory health.

Air quality is acceptable for most people.

UV & HEALTH

UV, Sun & Health Outlook in Lake Forest

Maximum daily UV Today, tomorrow and the following day show the maximum UV index forecast for each day.

0–2 Low 3–5 Moderate 6–7 High 8–10 Very high 11+ Extreme

Today UV 5,7Moderate 🙂Fair

Tomorrow UV 7,7High 🙂Fair

Wednesday UV 7,1High 😐Moderate

Thursday UV 7,8High 🙂Fair

Friday UV 6,0High 😊Good

Saturday UV 6,0High —Unavailable

Sunday UV 5,0Moderate —Unavailable

Hourly UV index today

12:00 PMUV 4,8 1:00 PMUV 4,8 2:00 PMUV 5,7 3:00 PMUV 4,4 4:00 PMUV 2,8 5:00 PMUV 1,2 6:00 PMUV 0,5 7:00 PMUV 0,0

Today's weather health advice Open today's recommendations.

Moderate UV risk

Sunglasses and sun protection are recommended for prolonged exposure.

Acceptable air quality

Air quality is acceptable for most people. Very sensitive people may want to reduce prolonged exertion.

Comfortable temperature conditions

Temperatures should feel comfortable for most people, with no particular heat or cold precautions needed.

Good conditions for outdoor activities

Outdoor activities can generally be enjoyed normally, with sun protection adjusted to the UV level.

WIND OUTLOOK

Hourly Wind Forecast for Lake Forest

Vertical axis: mph · Horizontal axis: hours

Sustained wind Max gusts

Internal PR simulation: 4.42 Population: 19,416

DISCOVER WEATHER NEARBY Weather in other cities

Explore current conditions and forecasts for other locations.

Forecast data for Lake Forest were last refreshed today at 11:09 AM. The current forecast period extends through 02/09/2026 at 9:00 AM. Weather, air-quality and UV-index data are provided through WEATHER-INFO.COM. Forecasts are produced automatically from the latest available data and are subject to periodic technical checks. This service is intended for general weather information.