Observed 2:00 PM CDT at KUGN

Grayslake, IL weather

Sunny and 64°18°, 11°6° warmer than a typical Oct 24.

Mostly agree

Now 64°18°

Sunny

Wind: 9 mph15 km/h; From the east-southeast. 58–10 mph16 km/h through 2 AM
Dew point: 54°12°; Comfortable · down to 45°7° by 1 AM
UV tomorrow: 3Moderate; Moderate 12–4 PM · peak 3
Air quality: 55Moderate; Main pollutant: PM2.5 (fine particles)
Pressure: 30.37 inHg1028 hPa; Falling · −0.06 inHg−1.9 hPa in 3 h

No precipitation expected in the next 2 hours.

From forecast models

Next 48 hours

Good hours for

Below 60°16° tonight after 8 PM
Low 49°9° tomorrow at 6 AM
Above 60°16° tomorrow by 10 AM

This afternoonNear 69°21° · Partly cloudy
TonightDown to 50°10° by 4 AM · Partly cloudy
Tomorrow morningUp to 65°18° by 11 AM · Mostly cloudy
Tomorrow afternoonUp to 74°23° by 3 PM · Mostly cloudy
Tomorrow nightDown to 49°9° by 4 AM · Mostly cloudy
Monday morningUp to 61°16° by 11 AM · Mostly 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 2p	Partly sunny	70°21° (likely 66°19° to 70°21°)	70°21°	0%	10 mph16 km/h from SSE, gusts 12 mph19 km/h	46%	57%	2
Sat 3p	Sunny	70°21° (likely 66°19° to 70°21°)	70°21°	0%	10 mph16 km/h from SSE, gusts 12 mph19 km/h	47%	33%	2
Sat 4p	Cloudy	69°21° (likely 66°19° to 69°21°)	69°21°	0%	10 mph16 km/h from SSE, gusts 12 mph19 km/h	49%	65%	1
Sat 5p	Partly sunny	67°19° (likely 64°18° to 67°19°)	67°19°	0%	10 mph16 km/h from SE, gusts 12 mph19 km/h	52%	65%	0
Sat 6p	Cloudy	64°18° (likely 60°16° to 64°18°)	64°18°	0%	5 mph8 km/h from SSE, gusts 9 mph15 km/h	58%	72%	0
Sat 7p	Cloudy	60°16° (likely 57°14° to 60°16°)	60°16°	0%	5 mph8 km/h from SSE, gusts 10 mph16 km/h	65%	72%	0
Sat 8p	Partly cloudy	58°14° (likely 56°13° to 59°15°)	58°14°	0%	5 mph8 km/h from SSE, gusts 11 mph17 km/h	72%	44%	0
Sat 9p	Clear	56°13° (likely 55°13° to 57°14°)	56°13°	0%	5 mph8 km/h from SSE, gusts 11 mph17 km/h	78%	10%	0
Sat 10p	Clear	55°13° (likely 54°12° to 56°13°)	55°13°	0%	5 mph8 km/h from S, gusts 11 mph17 km/h	79%	17%	0
Sat 11p	Clear	54°12° (likely 54°12° to 56°13°)	54°12°	0%	5 mph8 km/h from S, gusts 11 mph18 km/h	78%	4%	0
Sun 12a	Clear	53°12° (likely 53°12° to 55°13°)	53°12°	0%	5 mph8 km/h from S, gusts 11 mph18 km/h	78%	10%	0
Sun 1a	Partly cloudy	52°11° (likely 52°11° to 54°12°)	52°11°	0%	5 mph8 km/h from S, gusts 11 mph18 km/h	78%	59%	0
Sun 2a	Partly cloudy	51°11° (likely 51°11° to 54°12°)	51°11°	0%	5 mph8 km/h from S, gusts 11 mph17 km/h	79%	58%	0
Sun 3a	Partly cloudy	51°11° (likely 51°11° to 53°12°)	51°11°	0%	5 mph8 km/h from S, gusts 10 mph17 km/h	80%	57%	0
Sun 4a	Partly cloudy	50°10° (likely 50°10° to 53°12°)	50°10°	0%	0 mph0 km/h, gusts 11 mph18 km/h	82%	86%	0
Sun 5a	Partly cloudy	50°10° (likely 50°10° to 52°11°)	50°10°	0%	0 mph0 km/h, gusts 12 mph19 km/h	82%	59%	0
Sun 6a	Cloudy	49°9° (likely 49°9° to 52°11°)	49°9°	0%	0 mph0 km/h, gusts 12 mph19 km/h	82%	90%	0
Sun 7a	Cloudy	49°9° (likely 49°9° to 52°11°)	49°9°	0%	0 mph0 km/h, gusts 11 mph18 km/h	83%	83%	0
Sun 8a	Cloudy	50°10° (likely 50°10° to 53°12°)	49°9°	0%	5 mph8 km/h from SSW, gusts 11 mph18 km/h	83%	80%	0
Sun 9a	Cloudy	55°13° (likely 55°13° to 58°14°)	55°13°	0%	5 mph8 km/h from SSW, gusts 12 mph19 km/h	70%	81%	1
Sun 10a	Cloudy	60°16° (likely 58°14° to 62°17°)	61°16°	0%	5 mph8 km/h from SSW, gusts 13 mph22 km/h	61%	78%	1
Sun 11a	Partly sunny	65°18° (likely 62°17° to 67°19°)	65°18°	0%	10 mph16 km/h from SW, gusts 13 mph21 km/h	52%	76%	2
Sun 12p	Cloudy	69°21° (likely 66°19° to 70°21°)	69°21°	0%	10 mph16 km/h from SW, gusts 12 mph19 km/h	47%	69%	3
Sun 1p	Cloudy	72°22° (likely 68°20° to 72°22°)	72°22°	0%	10 mph16 km/h from SW, gusts 11 mph18 km/h	44%	66%	3
Sun 2p	Cloudy	73°23° (likely 69°21° to 73°23°)	73°23°	0%	10 mph16 km/h from SSW, gusts 11 mph17 km/h	43%	68%	3
Sun 3p	Partly sunny	74°23° (likely 70°21° to 74°23°)	74°23°	0%	5 mph8 km/h from SSW, gusts 10 mph16 km/h	43%	72%	3
Sun 4p	Partly sunny	73°23° (likely 69°21° to 73°23°)	73°23°	0%	5 mph8 km/h from SSW, gusts 10 mph15 km/h	44%	38%	2
Sun 5p	Cloudy	70°21° (likely 67°19° to 71°22°)	70°21°	0%	5 mph8 km/h from SSW, gusts 9 mph15 km/h	48%	77%	1
Sun 6p	Cloudy	66°19° (likely 63°17° to 67°19°)	66°19°	0%	5 mph8 km/h from SSW, gusts 7 mph12 km/h	56%	77%	0
Sun 7p	Cloudy	62°17° (likely 60°16° to 64°18°)	62°17°	0%	5 mph8 km/h from SSW, gusts 6 mph10 km/h	64%	78%	0
Sun 8p	Cloudy	59°15° (likely 59°15° to 63°17°)	59°15°	0%	5 mph8 km/h from SSW, gusts 7 mph11 km/h	69%	78%	0
Sun 9p	Cloudy	57°14° (likely 57°14° to 60°16°)	57°14°	0%	5 mph8 km/h from SSW, gusts 5 mph9 km/h	73%	79%	0
Sun 10p	Cloudy	55°13° (likely 55°13° to 59°15°)	55°13°	0%	5 mph8 km/h from SSW, gusts 7 mph11 km/h	77%	77%	0
Sun 11p	Cloudy	54°12° (likely 54°12° to 57°14°)	54°12°	0%	5 mph8 km/h from WSW, gusts 8 mph13 km/h	79%	80%	0
Mon 12a	Cloudy	53°12° (likely 53°12° to 56°13°)	53°12°	0%	5 mph8 km/h from W, gusts 10 mph17 km/h	81%	80%	0
Mon 1a	Cloudy	52°11° (likely 52°11° to 55°13°)	52°11°	0%	5 mph8 km/h from NNW, gusts 11 mph18 km/h	86%	79%	0
Mon 2a	Cloudy	51°11° (likely 51°11° to 54°12°)	51°11°	0%	5 mph8 km/h from NNW, gusts 12 mph20 km/h	91%	76%	0
Mon 3a	Cloudy	50°10° (likely 50°10° to 54°12°)	48°9°	0%	5 mph8 km/h from N, gusts 12 mph20 km/h	96%	73%	0
Mon 4a	Cloudy	49°9° (likely 49°9° to 55°13°)	47°8°	0%	5 mph8 km/h from N, gusts 12 mph20 km/h	100%	71%	0
Mon 5a	Cloudy	49°9° (likely 49°9° to 56°13°)	46°8°	0%	5 mph8 km/h from NNE, gusts 12 mph19 km/h	100%	82%	0
Mon 6a	Cloudy	49°9° (likely 49°9° to 56°13°)	46°8°	0%	5 mph8 km/h from NNE, gusts 13 mph21 km/h	100%	92%	0
Mon 7a	Cloudy	49°9° (likely 49°9° to 56°13°)	46°8°	0%	5 mph8 km/h from NNE, gusts 14 mph22 km/h	100%	84%	0
Mon 8a	Cloudy	49°9° (likely 49°9° to 56°13°)	46°8°	0%	5 mph8 km/h from NNE, gusts 12 mph19 km/h	100%	77%	0
Mon 9a	Cloudy	53°12° (likely 53°12° to 58°14°)	53°12°	0%	10 mph16 km/h from NNE, gusts 14 mph22 km/h	89%	86%	1
Mon 10a	Cloudy	58°14° (likely 55°13° to 62°17°)	58°14°	0%	10 mph16 km/h from NE, gusts 15 mph24 km/h	75%	88%	1
Mon 11a	Cloudy	61°16° (likely 57°14° to 63°17°)	61°16°	0%	10 mph16 km/h from NE, gusts 15 mph24 km/h	66%	82%	2
Mon 12p	Cloudy	62°17° (likely 58°14° to 63°17°)	62°17°	0%	10 mph16 km/h from NE, gusts 14 mph23 km/h	65%	86%	2
Mon 1p	Cloudy	62°17° (likely 60°16° to 62°17°)	62°17°	0%	10 mph16 km/h from NE, gusts 14 mph23 km/h	67%	91%	4

Days ahead

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

Today, Oct 24. Cloudy. High 70°21°, low 49°9°. Typical 59°15° / 37°3°. Dry. Mostly agree.
1. Afternoon
  noon–6 PM
  Cloudy, 70°21°
  Dry
2. Evening
  6 PM–midnight
  Clear, 58°14°
  Dry
3. Overnight
  midnight–6 AM
  Partly cloudy, 50°10°
  Dry
Official NWS forecast
Today: Mostly sunny. High near 70, with temperatures falling to around 67 in the afternoon. South southeast wind around 10 mph.
Tonight: Partly cloudy, with a low around 49. South wind 0 to 5 mph.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
66°19°–70°21°
Low, likely
47°8°–49°9°
Typical high / low
59°15° / 37°3°
Wind
8 mph12 km/h, gusts 16 mph26 km/h
UV peak
3
Tomorrow, Oct 25. Partly sunny. High 74°23°, low 49°9°. Typical 59°15° / 36°2°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Cloudy, 50°10°
  Dry
2. Afternoon
  noon–6 PM
  Partly sunny, 74°23°
  Dry
3. Evening
  6 PM–midnight
  Cloudy, 59°15°
  Dry
4. Overnight
  midnight–6 AM
  Cloudy, 49°9°
  Dry
Official NWS forecast
Day: Mostly sunny. High near 74, with temperatures falling to around 70 in the afternoon. South southwest wind 0 to 10 mph.
Night: Partly cloudy, with a low around 49. Northwest wind around 5 mph.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
70°21°–74°23°
Low, likely
49°9°–52°11°
Typical high / low
59°15° / 36°2°
Wind
8 mph13 km/h, gusts 17 mph28 km/h
UV peak
3
Monday, Oct 26. Cloudy. High 62°17°, low 46°8°. Typical 58°14° / 36°2°. Dry. Forecasts agree.
1. Morning
  6 AM–noon
  Cloudy, 49°9°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 62°17°
  Dry
3. Evening
  6 PM–midnight
  Cloudy, 52°11°
  Dry
4. Overnight
  midnight–6 AM
  Cloudy, 52°11°
  Dry
Official NWS forecast
Day: Partly sunny, with a high near 62. North northeast wind 5 to 15 mph.
Night: Mostly cloudy, with a low around 46.
Forecasts agreeIndependent forecasts are close; the range is narrow.
High, likely
60°16°–62°17°
Low, likely
46°8°–52°11°
Typical high / low
58°14° / 36°2°
Wind
12 mph19 km/h, gusts 20 mph32 km/h
UV peak
4
Tuesday, Oct 27. Mostly cloudy. High 66°19°, low 53°12°. Typical 58°14° / 36°2°. Dry. Forecasts agree.
1. Morning
  6 AM–noon
  Cloudy, 53°11°
  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, 56°13°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Partly sunny, with a high near 66.
Night: Mostly cloudy, with a low around 53.
Forecasts agreeIndependent forecasts are close; the range is narrow.
High, likely
63°17°–66°19°
Low, likely
50°10°–53°12°
Typical high / low
58°14° / 36°2°
Wind
10 mph16 km/h, gusts 25 mph40 km/h
UV peak
2
Wednesday, Oct 28. Cloudy. High 73°23°, low 55°13°. Typical 57°14° / 36°2°. Dry. Forecasts differ.
1. Morning
  6 AM–noon
  Sunny, 56°13°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 69°20°
  Dry
3. Evening
  6 PM–midnight
  Clear, 62°16°
  Dry
4. Overnight
  midnight–6 AM
  Partly cloudy, 59°15°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Partly sunny, with a high near 73.
Night: Partly cloudy, with a low around 55.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
High, likely
66°19°–73°23°
Low, likely
52°11°–56°13°
Typical high / low
57°14° / 36°2°
Wind
12 mph19 km/h, gusts 28 mph44 km/h
UV peak
3
Thursday, Oct 29. Showers. High 73°23°, low 54°12°. Typical 57°14° / 35°2°. Rain 0.04 in1 mm, 20% chance. Forecasts differ.
1. Morning
  6 AM–noon
  Cloudy, 59°15°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 70°21°
  Dry
3. Evening
  6 PM–midnight
  Cloudy, 62°17°
  Dry
4. Overnight
  midnight–6 AM
  Cloudy, 57°14°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: A slight chance of rain showers after 7am. Mostly sunny, with a high near 73.
Night: A slight chance of rain showers. Partly cloudy, with a low around 54.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
High, likely
67°19°–73°23°
Low, likely
54°12°–58°14°
Typical high / low
57°14° / 35°2°
Wind
14 mph23 km/h, gusts 31 mph49 km/h
UV peak
3
Friday, Oct 30. Mostly cloudy. High 72°22°, low 55°13°. Typical 56°13° / 35°2°. Dry. Forecasts differ.
1. Morning
  6 AM–noon
  Cloudy, 58°15°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 69°21°
  Dry
3. Evening
  6 PM–midnight
  Cloudy, 62°17°
  Dry
4. Overnight
  midnight–6 AM
  Cloudy, 59°15°
  20% chance
Hours this far out come from computer models only.
Official NWS forecast
Day: A slight chance of rain showers before 7am. Partly sunny, with a high near 72.
Night: A slight chance of rain showers after 1am. Mostly cloudy, with a low around 55.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
High, likely
67°19°–73°23°
Low, likely
54°12°–58°14°
Typical high / low
56°13° / 35°2°
Wind
14 mph23 km/h, gusts 28 mph45 km/h
UV peak
3
Saturday, Oct 31. Drizzle. High 70°21°, low 59°15°. Typical 56°13° / 35°2°. Rain 0.09 in2.3 mm, 40% chance. Mostly agree.
1. Morning
  6 AM–noon
  Cloudy, 60°16°
  30% chance
2. Afternoon
  noon–6 PM
  Cloudy, 70°21°
  30% chance
3. Evening
  6 PM–midnight
  Drizzle, 65°18°
  40% chance · 0.04 in1.1 mm
4. Overnight
  midnight–6 AM
  Drizzle, 60°16°
  40% chance · 0.13 in3.4 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
68°20°–72°22°
Low, likely
54°12°–63°17°
Typical high / low
56°13° / 35°2°
Wind
15 mph24 km/h, gusts 28 mph46 km/h
UV peak
2
Sunday, Nov 1. Showers. High 64°18°, low 57°14°. Typical 55°13° / 34°1°. Rain 0.51 in13 mm, 40% chance. Mostly agree.
1. Morning
  6 AM–noon
  Drizzle, 61°16°
  40% chance · 0.1 in2.6 mm
2. Afternoon
  noon–6 PM
  Drizzle, 64°18°
  40% chance · 0.16 in4 mm
3. Evening
  6 PM–midnight
  Showers, 61°16°
  30% chance · 0.15 in3.7 mm
4. Overnight
  midnight–6 AM
  Drizzle, 48°9°
  30% chance · 0.02 in0.4 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
63°17°–66°19°
Low, likely
55°13°–59°15°
Typical high / low
55°13° / 34°1°
Wind
21 mph33 km/h, gusts 35 mph56 km/h
UV peak
1
Monday, Nov 2. Drizzle. High 59°15°, low 47°8°. Typical 55°13° / 34°1°. Rain 0.23 in5.8 mm, 40% chance. Forecasts differ.
1. Morning
  6 AM–noon
  Cloudy, 48°9°
  30% chance
2. Afternoon
  noon–6 PM
  Drizzle, 55°13°
  30% chance · 0.13 in3.3 mm
3. Evening
  6 PM–midnight
  Drizzle, 51°11°
  30% chance · 0.16 in4 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 differIndependent forecasts disagree; expect changes and plan for the range.
High, likely
56°13°–66°19°
Low, likely
38°3°–58°14°
Typical high / low
55°13° / 34°1°
Wind
20 mph31 km/h, gusts 39 mph63 km/h
UV peak
2

10 days15 days30 days

The outlook

Today
Dry, high 70°, low 49°.
Tomorrow
Dry, high 74°, low 49°, warming up.
Monday
Dry, high 62°, low 46°, cooling off.
Rest of week
Highs 59–73°; 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

Des Plaines River near Gurnee

4.7 mi

Below flood stage

Level: 2.4 ft
Flow: 74 cfs

Reading from Sat 12:30 PM · NWS gauge page

Mill Creek (IL) at Old Mill Creek

6.1 mi

Below flood stage

Level: 6.5 ft
Flow: 31 cfs

Reading from Sat 12 PM · NWS gauge page

Fox River at Lake Villa

7.2 mi

Below flood stage

Level: 4.1 ft

Reading from Sat 12:15 PM · NWS gauge page

Fox River at Fox Lake

8.7 mi

Below flood stage

Level: 4.1 ft

Reading from Sat 12 PM · NWS gauge page

For your home

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

Heating this week

About 87% less heating than a typical week.

This week 16Typical 128

Heating degree days, base 65°F

Comfort

Dry air outside (dew point 54°F).

Open the windows?

Today, 3:00 PM–7:00 PM

Good stretch to open the windows.

Is this typical?

MCHENRY STRATTON LOCK/DAM · official normals 1991–2020 · records 1992–2026

Oct 24, today vs a typical year

Today’s expected high is 11°6° warmer than typical.

Last 7 days vs normal

On average 5°3° warmer than normal (daily mean temperature).

−3°−2°SunOct 18
+2°+1°MonOct 19
+6°+3°TueOct 20
+6°+3°WedOct 21
—ThuOct 22
+9°+5°FriOct 23
+11°+6°SatOct 24

Grayslake 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 36 min less
Golden hour: 5:17–6:13 PM; Morning 6:58–7:54 AM
Blue hour: 6:13–6:24 PM; Morning 6:47–6:58 AM; first light 6:47 AM

Stars tonight? Fair

Mostly clear 9 PM–1 AM, but the moon is 99% lit and up.

Moon

Waxing gibbous

97% lit · growing

Today: sets 5:28 AM · rises 4:54 PM
Full moon: Oct 25
New moon: Nov 9

Looking east from Grayslake. A level horizon.Skyline from USGS elevation data, heights drawn up to 6× taller. Sky, sun and moon as they are now.

Grayslake, IL weather

Next 2 hours

Next 48 hours

Days ahead

The outlook

Today

Tomorrow

Monday

Rest of week

What changed since yesterday

Radar

Rivers

Des Plaines River near Gurnee

Mill Creek (IL) at Old Mill Creek

Fox River at Lake Villa

Fox River at Fox Lake

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