Observed 2:10 AM CDT at KPWK

Lake Forest, IL weather

Mostly clear and 48°9°, 9°5° warmer than a typical Oct 24.

Mostly agree

Now 48°9°

Mostly clear

Wind: Calm; Up to 10 mph16 km/h through 2 PM
Dew point: 48°9°; Comfortable
Humidity: 100%; Air 48°9°, dew point 48°9° · fog or dew likely
UV index: 0Low; Moderate 11 AM–4 PM · peak 3
Air quality: 72Moderate; Main pollutant: PM2.5 (fine particles)
Pressure: 30.36 inHg1028 hPa; Steady over the last 3 h

No precipitation expected in the next 2 hours.

From forecast models

Next 48 hours

About the same as this time yesterday (48°9° then, 48°9° now)

Good hours for

Low 50°10° tonight at 4 AM
Above 60°16° today by 11 AM
High 68°20° today at 2 PM
Below 60°16° tonight after 8 PM

TonightNear 51°11° · Clear
This morningUp to 63°17° by 11 AM · Mostly cloudy
This afternoonNear 66°19° · Mostly cloudy
TonightDown to 52°11° by 4 AM · Mostly cloudy
Tomorrow morningUp to 65°18° by 11 AM · Mostly cloudy
Tomorrow afternoonNear 69°21° · Mostly cloudy
Tomorrow nightDown to 54°12° by 1 AM · Cloudy

Hourly forecast, next 48 hours, in the place's local time
Hour	Conditions	Temperature	Feels like	Precipitation	Wind	Humidity	Cloud cover	UV index
Sat 2a	Mostly clear	52°11° (likely 50°10° to 53°12°)	52°11°	0%	5 mph8 km/h from S, gusts 10 mph16 km/h	80%	11%	0
Sat 3a	Mostly clear	51°11° (likely 50°10° to 52°11°)	51°11°	0%	5 mph8 km/h from S, gusts 12 mph20 km/h	81%	16%	0
Sat 4a	Clear	50°10° (likely 50°10° to 51°11°)	49°9°	0%	5 mph8 km/h from S, gusts 12 mph19 km/h	81%	27%	0
Sat 5a	Mostly clear	50°10° (likely 49°9° to 50°10°)	48°9°	0%	5 mph8 km/h from S, gusts 11 mph18 km/h	82%	20%	0
Sat 6a	Partly cloudy	50°10° (likely 48°9° to 50°10°)	48°9°	0%	5 mph8 km/h from S, gusts 12 mph19 km/h	81%	29%	0
Sat 7a	Partly sunny	50°10° (likely 48°9° to 50°10°)	48°9°	0%	5 mph8 km/h from S, gusts 12 mph19 km/h	84%	38%	0
Sat 8a	Cloudy	50°10° (likely 48°9° to 51°11°)	48°9°	0%	5 mph8 km/h from S, gusts 12 mph19 km/h	85%	80%	0
Sat 9a	Cloudy	54°12° (likely 53°12° to 54°12°)	54°12°	0%	5 mph8 km/h from S, gusts 15 mph24 km/h	76%	80%	1
Sat 10a	Cloudy	59°15° (likely 57°14° to 59°15°)	59°15°	0%	10 mph16 km/h from S, gusts 14 mph23 km/h	65%	81%	2
Sat 11a	Cloudy	63°17° (likely 60°16° to 63°17°)	63°17°	0%	10 mph16 km/h from S, gusts 14 mph22 km/h	58%	81%	3
Sat 12p	Cloudy	66°19° (likely 63°17° to 66°19°)	66°19°	0%	10 mph16 km/h from S, gusts 12 mph19 km/h	54%	81%	3
Sat 1p	Cloudy	67°19° (likely 65°18° to 68°20°)	67°19°	0%	10 mph16 km/h from S, gusts 11 mph18 km/h	52%	81%	3
Sat 2p	Cloudy	68°20° (likely 66°19° to 69°21°)	68°20°	0%	10 mph16 km/h from S, gusts 11 mph18 km/h	51%	78%	3
Sat 3p	Cloudy	68°20° (likely 66°19° to 69°21°)	68°20°	0%	10 mph16 km/h from SSE, gusts 12 mph19 km/h	52%	79%	3
Sat 4p	Cloudy	67°19° (likely 66°19° to 69°21°)	67°19°	0%	10 mph16 km/h from SSE, gusts 12 mph20 km/h	53%	79%	2
Sat 5p	Cloudy	66°19° (likely 64°18° to 67°19°)	66°19°	0%	10 mph16 km/h from SSE, gusts 13 mph20 km/h	55%	77%	1
Sat 6p	Cloudy	64°18° (likely 61°16° to 64°18°)	64°18°	0%	5 mph8 km/h from SSE, gusts 11 mph18 km/h	58%	79%	0
Sat 7p	Cloudy	60°16° (likely 59°15° to 61°16°)	60°16°	5%	5 mph8 km/h from SSE, gusts 10 mph16 km/h	67%	79%	0
Sat 8p	Cloudy	59°15° (likely 58°14° to 61°16°)	59°15°	5%	5 mph8 km/h from SSE, gusts 11 mph17 km/h	71%	74%	0
Sat 9p	Mostly cloudy	58°14° (likely 57°14° to 60°16°)	58°14°	5%	5 mph8 km/h from S, gusts 11 mph18 km/h	74%	53%	0
Sat 10p	Mostly clear	57°14° (likely 57°14° to 59°15°)	57°14°	5%	5 mph8 km/h from S, gusts 12 mph19 km/h	75%	35%	0
Sat 11p	Partly cloudy	56°13° (likely 56°13° to 58°14°)	56°13°	5%	5 mph8 km/h from S, gusts 11 mph18 km/h	76%	57%	0
Sun 12a	Partly cloudy	55°13° (likely 55°13° to 57°14°)	55°13°	0%	5 mph8 km/h from S, gusts 11 mph18 km/h	75%	48%	0
Sun 1a	Partly cloudy	54°12° (likely 54°12° to 56°13°)	54°12°	0%	5 mph8 km/h from S, gusts 11 mph17 km/h	74%	57%	0
Sun 2a	Partly cloudy	54°12° (likely 53°12° to 54°12°)	54°12°	5%	5 mph8 km/h from S, gusts 11 mph18 km/h	74%	40%	0
Sun 3a	Partly cloudy	53°12° (likely 53°12° to 54°12°)	53°12°	5%	5 mph8 km/h from SSW, gusts 11 mph18 km/h	75%	58%	0
Sun 4a	Cloudy	52°11° (likely 52°11° to 54°12°)	52°11°	5%	5 mph8 km/h from SSW, gusts 12 mph19 km/h	76%	90%	0
Sun 5a	Cloudy	52°11° (likely 52°11° to 54°12°)	52°11°	5%	5 mph8 km/h from SSW, gusts 12 mph19 km/h	77%	86%	0
Sun 6a	Partly cloudy	51°11° (likely 51°11° to 54°12°)	51°11°	5%	5 mph8 km/h from SSW, gusts 12 mph19 km/h	77%	86%	0
Sun 7a	Cloudy	51°11° (likely 51°11° to 54°12°)	51°11°	0%	5 mph8 km/h from SSW, gusts 11 mph18 km/h	80%	84%	0
Sun 8a	Cloudy	52°11° (likely 52°11° to 54°12°)	52°11°	0%	5 mph8 km/h from SSW, gusts 11 mph17 km/h	81%	84%	0
Sun 9a	Cloudy	56°13° (likely 55°13° to 58°14°)	56°13°	0%	5 mph8 km/h from SSW, gusts 12 mph19 km/h	73%	88%	1
Sun 10a	Cloudy	61°16° (likely 57°14° to 63°17°)	61°16°	0%	5 mph8 km/h from SSW, gusts 13 mph21 km/h	63%	81%	2
Sun 11a	Partly sunny	65°18° (likely 61°16° to 68°20°)	65°18°	0%	5 mph8 km/h from SSW, gusts 13 mph21 km/h	56%	77%	2
Sun 12p	Partly sunny	68°20° (likely 66°19° to 71°22°)	68°20°	0%	5 mph8 km/h from SSW, gusts 12 mph19 km/h	51%	67%	3
Sun 1p	Partly sunny	70°21° (likely 69°21° to 74°23°)	70°21°	0%	5 mph8 km/h from SSW, gusts 10 mph17 km/h	49%	35%	3
Sun 2p	Partly sunny	70°21° (likely 70°21° to 75°24°)	71°22°	0%	5 mph8 km/h from S, gusts 10 mph16 km/h	48%	56%	2
Sun 3p	Cloudy	71°22° (likely 71°22° to 75°24°)	71°22°	0%	5 mph8 km/h from S, gusts 9 mph14 km/h	49%	61%	2
Sun 4p	Cloudy	71°22° (likely 70°21° to 73°23°)	71°22°	0%	5 mph8 km/h from S, gusts 8 mph13 km/h	50%	68%	2
Sun 5p	Partly sunny	69°21° (likely 67°19° to 70°21°)	69°21°	0%	5 mph8 km/h from S, gusts 8 mph12 km/h	53%	73%	1
Sun 6p	Partly cloudy	66°19° (likely 62°17° to 66°19°)	66°19°	0%	5 mph8 km/h from S, gusts 9 mph15 km/h	57%	80%	0
Sun 7p	Partly cloudy	62°17° (likely 59°15° to 63°17°)	62°17°	0%	5 mph8 km/h from S, gusts 9 mph14 km/h	68%	80%	0
Sun 8p	Mostly clear	60°16° (likely 58°14° to 63°17°)	60°16°	0%	0 mph0 km/h, gusts 5 mph8 km/h	73%	85%	0
Sun 9p	Cloudy	58°14° (likely 57°14° to 62°17°)	58°14°	0%	0 mph0 km/h, gusts 5 mph7 km/h	78%	82%	0
Sun 10p	Cloudy	57°14° (likely 56°13° to 62°17°)	57°14°	0%	0 mph0 km/h, gusts 4 mph7 km/h	80%	84%	0
Sun 11p	Cloudy	56°13° (likely 55°13° to 61°16°)	56°13°	0%	0 mph0 km/h, gusts 4 mph7 km/h	81%	88%	0
Mon 12a	Cloudy	55°13° (likely 55°13° to 60°16°)	55°13°	0%	0 mph0 km/h, gusts 5 mph8 km/h	82%	91%	0
Mon 1a	Cloudy	54°12° (likely 54°12° to 60°16°)	54°12°	0%	0 mph0 km/h, gusts 4 mph7 km/h	83%	92%	0

Days ahead

Shaded: typical range for these dates (1991–2020)

Today, Oct 24. Cloudy. High 68°20°, low 49°9°. Typical 59°15° / 42°6°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Cloudy, 50°10°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 68°20°
  Dry
3. Evening
  6 PM–midnight
  Mostly cloudy, 59°15°
  Dry
4. Overnight
  midnight–6 AM
  Partly cloudy, 52°11°
  Dry
Official NWS forecast
Today: Mostly sunny. High near 68, with temperatures falling to around 66 in the afternoon. South southeast wind 5 to 10 mph.
Tonight: Mostly clear, with a low around 49. South wind around 5 mph.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
67°19°–69°21°
Low, likely
48°9°–49°9°
Typical high / low
59°15° / 42°6°
Wind
9 mph14 km/h, gusts 22 mph35 km/h
UV peak
3
Tomorrow, Oct 25. Cloudy. High 72°22°, low 51°11°. Typical 58°14° / 41°5°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Cloudy, 52°11°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 71°22°
  Dry
3. Evening
  6 PM–midnight
  Cloudy, 60°16°
  Dry
4. Overnight
  midnight–6 AM
  Cloudy, 54°12°
  Dry
Official NWS forecast
Day: Mostly sunny, with a high near 72. South southwest wind around 5 mph, with gusts as high as 10 mph.
Night: Mostly cloudy, with a low around 51. Southwest wind 0 to 5 mph.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
71°22°–75°24°
Low, likely
51°11°–53°12°
Typical high / low
58°14° / 41°5°
Wind
9 mph15 km/h, gusts 17 mph28 km/h
UV peak
3
Monday, Oct 26. Cloudy. High 62°17°, low 49°9°. Typical 58°14° / 41°5°. Dry. Forecasts agree.
1. Morning
  6 AM–noon
  Cloudy, 57°14°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 61°16°
  Dry
3. Evening
  6 PM–midnight
  Cloudy, 55°13°
  Dry
4. Overnight
  midnight–6 AM
  Cloudy, 55°13°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Mostly cloudy, with a high near 62.
Night: Mostly cloudy, with a low around 49.
Forecasts agreeIndependent forecasts are close; the range is narrow.
High, likely
61°16°–62°17°
Low, likely
49°9°–54°12°
Typical high / low
58°14° / 41°5°
Wind
12 mph19 km/h, gusts 20 mph32 km/h
UV peak
3
Tuesday, Oct 27. Cloudy. High 63°17°, low 51°11°. Typical 58°14° / 40°4°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Cloudy, 55°13°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 63°17°
  Dry
3. Evening
  6 PM–midnight
  Cloudy, 59°15°
  Dry
4. Overnight
  midnight–6 AM
  Cloudy, 57°14°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Mostly cloudy, with a high near 63.
Night: Mostly cloudy, with a low around 51.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
61°16°–66°19°
Low, likely
51°11°–56°13°
Typical high / low
58°14° / 40°4°
Wind
10 mph16 km/h, gusts 28 mph45 km/h
UV peak
3
Wednesday, Oct 28. Partly sunny. High 70°21°, low 52°11°. Typical 57°14° / 40°4°. Dry. Forecasts agree. Best day outdoors this week.
1. Morning
  6 AM–noon
  Sunny, 57°14°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 70°21°
  Dry
3. Evening
  6 PM–midnight
  Clear, 63°17°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 59°15°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Mostly sunny, with a high near 70.
Night: Partly cloudy, with a low around 52.
Forecasts agreeIndependent forecasts are close; the range is narrow.
Best day outdoors this week: the one dry, mild day the forecasts agree on (high 70°21°).
High, likely
69°21°–72°22°
Low, likely
52°11°–57°14°
Typical high / low
57°14° / 40°4°
Wind
10 mph16 km/h, gusts 23 mph37 km/h
UV peak
4
Thursday, Oct 29. Partly sunny. High 67°19°, low 48°9°. Typical 57°14° / 40°4°. Dry. Forecasts differ.
1. Morning
  6 AM–noon
  Sunny, 60°15°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 68°20°
  Dry
3. Evening
  6 PM–midnight
  Clear, 59°15°
  Dry
4. Overnight
  midnight–6 AM
  Partly cloudy, 54°12°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Mostly sunny, with a high near 67.
Night: A slight chance of rain showers after 1am. Partly cloudy, with a low around 48.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
High, likely
67°19°–73°23°
Low, likely
48°9°–60°16°
Typical high / low
57°14° / 40°4°
Wind
12 mph20 km/h, gusts 28 mph45 km/h
UV peak
3
Friday, Oct 30. Showers. High 65°18°, low 54°12°. Typical 56°13° / 39°4°. Rain 0.01 in0.3 mm, 20% chance. Forecasts differ.
1. Morning
  6 AM–noon
  Cloudy, 55°13°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 65°18°
  Dry
3. Evening
  6 PM–midnight
  Partly cloudy, 60°16°
  Dry
4. Overnight
  midnight–6 AM
  Partly cloudy, 58°15°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: A slight chance of rain showers. Partly sunny, with a high near 65.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
High, likely
62°17°–73°23°
Low, likely
47°8°–59°15°
Typical high / low
56°13° / 39°4°
Wind
9 mph15 km/h, gusts 20 mph32 km/h
Saturday, Oct 31. Cloudy. High 68°20°, low 59°15°. Typical 56°13° / 39°4°. Rain 0.2 in5.1 mm, 40% chance. Mostly agree.
1. Morning
  6 AM–noon
  Partly sunny, 60°15°
  20% chance
2. Afternoon
  noon–6 PM
  Cloudy, 68°20°
  30% chance
3. Evening
  6 PM–midnight
  Drizzle, 63°17°
  40% chance · 0.06 in1.4 mm
4. Overnight
  midnight–6 AM
  Drizzle, 60°16°
  40% chance · 0.06 in1.5 mm
Hours this far out come from computer models only.
The National Weather Service writes about seven days ahead; this day is our model forecast only.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
64°18°–71°22°
Low, likely
57°14°–61°16°
Typical high / low
56°13° / 39°4°
Wind
12 mph19 km/h, gusts 27 mph43 km/h
UV peak
1
Sunday, Nov 1. Drizzle. High 66°19°, low 59°15°. Typical 55°13° / 39°4°. Rain 0.34 in8.6 mm, 50% chance. Forecasts agree.
1. Morning
  6 AM–noon
  Drizzle, 61°16°
  50% chance · 0.05 in1.2 mm
2. Afternoon
  noon–6 PM
  Drizzle, 64°18°
  40% chance · 0.14 in3.5 mm
3. Evening
  6 PM–midnight
  Drizzle, 62°17°
  40% chance · 0.14 in3.5 mm
4. Overnight
  midnight–6 AM
  Cloudy, 55°13°
  40% chance · 0.03 in0.9 mm
Hours this far out come from computer models only.
The National Weather Service writes about seven days ahead; this day is our model forecast only.
Forecasts agreeIndependent forecasts are close; the range is narrow.
High, likely
64°18°–67°19°
Low, likely
56°13°–61°16°
Typical high / low
55°13° / 39°4°
Wind
24 mph39 km/h, gusts 44 mph71 km/h
UV peak
2
Monday, Nov 2. Cloudy. High 60°16°, low 48°9°. Typical 55°13° / 38°3°. Rain 0.22 in5.6 mm, 40% chance. Mostly agree.
1. Morning
  6 AM–noon
  Partly sunny, 54°12°
  30% chance · 0.02 in0.5 mm
2. Afternoon
  noon–6 PM
  Cloudy, 54°12°
  20% chance · 0.11 in2.7 mm
3. Evening
  6 PM–midnight
  Cloudy, 49°9°
  Dry
Hours this far out come from computer models only.
The National Weather Service writes about seven days ahead; this day is our model forecast only.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
58°14°–63°17°
Low, likely
41°5°–55°13°
Typical high / low
55°13° / 38°3°
Wind
19 mph30 km/h, gusts 44 mph70 km/h
UV peak
3

10 days15 days30 days

The outlook

Today
Dry, high 68°, low 49°.
Tomorrow
Dry, high 72°, low 51°, warming up.
Monday
Dry, high 62°, low 49°, cooling off.
Rest of week
Highs 60–70°; chance of precipitation on Sunday.

Want the meteorologists’ reasoning? Read the NWS forecast discussion (LOT) (opens in a new tab)

What changed since yesterday

No meaningful changes from yesterday’s forecast.

Radar

Radar data: NOAA MRMS, rendered by forecast.blue

Radar loads when scrolled into view

Full-screen radar

Rivers

NOAA river gauges within 25 mi

Skokie River at Lake Forest

0.6 mi

Below flood stage

Level: 2.0 ft
Flow: 2 cfs

Reading from Sat 1:10 AM · NWS gauge page

Des Plaines River at Lincolnshire

4.0 mi

Below flood stage

Level: 7.1 ft
Flow: 162 cfs

Reading from Sat 12:45 AM · NWS gauge page

West Fork North Branch Chicago River at Deerfield

4.7 mi

Below flood stage

Level: 7.2 ft

Reading from Sat 1:10 AM · NWS gauge page

North Branch Chicago River at Deerfield

6.0 mi

Below flood stage

Level: 4.3 ft
Flow: 2 cfs

Reading from Sat 1:10 AM · NWS gauge page

For your home

What this week’s weather means for heating, cooling, pipes and fresh air.

Heating this week

About 88% less heating than a typical week.

This week 13Typical 112

Heating degree days, base 65°F

Comfort

Dry air outside (dew point 48°F).

Open the windows?

Today, 11:00 AM–7:00 PM

Good stretch to open the windows.

Is this typical?

Chicago Palwaukee Airport · official normals 1991–2020 · records 1996–2026

Oct 24, today vs a typical year

Today’s expected high is 9°5° warmer than typical.

Last 7 days vs normal

On average 3°2° warmer than normal (daily mean temperature).

±0°SunOct 18
+1°±0°MonOct 19
+3°+1°TueOct 20
+5°+3°WedOct 21
+8°+4°ThuOct 22
—FriOct 23
—SatOct 24

Lake Forest weather by month: normals, records, snow and freeze dates

Sun & moon

Sun

Daylight: 10 h 41 min; Losing 2 min 35 s a day; shortest Dec 21, 1 h 35 min less
Golden hour: 5:16–6:13 PM; Morning 6:57–7:53 AM
Blue hour: 6:13–6:24 PM; Morning 6:46–6:57 AM; first light 6:46 AM

Stars tonight? Fair

Mostly clear 2:38–4 AM, but the moon is 96% lit and up.

Moon

Waxing gibbous

96% lit · growing

Today: sets 5:27 AM · rises 4:53 PM
Full moon: Oct 25
New moon: Nov 9

Looking east from Lake Forest. Open water to the horizon.Skyline from USGS elevation data, heights drawn up to 6× taller. Sky, sun and moon as they are now.

Lake Forest, IL weather

Next 2 hours

Next 48 hours

Days ahead

The outlook

Today

Tomorrow

Monday

Rest of week

What changed since yesterday

Radar

Rivers

Skokie River at Lake Forest

Des Plaines River at Lincolnshire

West Fork North Branch Chicago River at Deerfield

North Branch Chicago River at Deerfield

For your home

Heating this week

Comfort

Open the windows?

Is this typical?

Oct 24, today vs a typical year

Last 7 days vs normal

Sun & moon

Sun

Stars tonight? Fair

Moon