Observed 4:00 PM CDT at KUGN

Round Lake Heights, IL weather

Sunny and 63°17°, 12°7° warmer than a typical Oct 24.

Forecasts agree

Now 63°17°

Sunny

Wind: 9 mph15 km/h; From the southeast. Up to 10 mph16 km/h through 4 AM
Dew point: 52°11°; Comfortable
UV tomorrow: 3Moderate; Moderate 12–4 PM · peak 3
Air quality: 50Good; Ozone · tomorrow moderate
Pressure: 30.36 inHg1028 hPa; Falling slowly · −0.04 inHg−1.3 hPa in 3 h

No precipitation expected in the next 2 hours.

From forecast models

Next 48 hours

About the same as this time yesterday (64°18° then, 63°17° now)

Good hours for

Below 60°16° tonight after 8 PM
Low 48°9° tomorrow at 7 AM
Above 60°16° tomorrow by 10 AM

This afternoonNear 69°21° · Partly cloudy
TonightDown to 49°9° by 5 AM · Partly cloudy
Tomorrow morningUp to 66°19° by 11 AM · Mostly cloudy
Tomorrow afternoonUp to 74°23° by 3 PM · Partly cloudy
Tomorrow nightDown to 49°9° by 4 AM · Mostly cloudy
Monday morningUp to 60°16° by 11 AM · Cloudy
Monday afternoonNear 61°16° · 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 4p	Partly sunny	70°21° (likely 67°19° to 70°21°)	70°21°	0%	10 mph16 km/h from S, gusts 12 mph19 km/h	46%	46%	2
Sat 5p	Partly sunny	68°20° (likely 64°18° to 68°20°)	69°21°	0%	10 mph16 km/h from S, gusts 12 mph19 km/h	49%	38%	1
Sat 6p	Cloudy	65°18° (likely 60°16° to 65°18°)	65°18°	0%	5 mph8 km/h from SSE, gusts 10 mph16 km/h	55%	72%	0
Sat 7p	Cloudy	61°16° (likely 58°14° to 61°16°)	61°16°	0%	5 mph8 km/h from SSE, gusts 10 mph16 km/h	62%	70%	0
Sat 8p	Partly cloudy	59°15° (likely 56°13° to 59°15°)	59°15°	0%	5 mph8 km/h from SSE, gusts 11 mph17 km/h	68%	41%	0
Sat 9p	Clear	57°14° (likely 55°13° to 57°14°)	57°14°	0%	5 mph8 km/h from SSE, gusts 10 mph16 km/h	75%	16%	0
Sat 10p	Clear	55°13° (likely 54°12° to 56°13°)	55°13°	0%	5 mph8 km/h from SSE, gusts 11 mph17 km/h	78%	10%	0
Sat 11p	Clear	54°12° (likely 53°12° to 56°13°)	54°12°	0%	5 mph8 km/h from S, gusts 11 mph18 km/h	78%	12%	0
Sun 12a	Partly cloudy	53°12° (likely 52°11° to 54°12°)	53°12°	0%	5 mph8 km/h from S, gusts 10 mph15 km/h	78%	26%	0
Sun 1a	Partly cloudy	52°11° (likely 52°11° to 54°12°)	52°11°	0%	5 mph8 km/h from S, gusts 11 mph17 km/h	79%	37%	0
Sun 2a	Partly cloudy	51°11° (likely 51°11° to 53°12°)	51°11°	0%	5 mph8 km/h from S, gusts 11 mph17 km/h	80%	62%	0
Sun 3a	Cloudy	50°10° (likely 50°10° to 53°12°)	51°11°	0%	0 mph0 km/h, gusts 11 mph18 km/h	82%	79%	0
Sun 4a	Cloudy	50°10° (likely 50°10° to 52°11°)	50°10°	0%	0 mph0 km/h, gusts 11 mph18 km/h	83%	85%	0
Sun 5a	Cloudy	49°9° (likely 49°9° to 52°11°)	49°9°	0%	0 mph0 km/h, gusts 11 mph18 km/h	84%	83%	0
Sun 6a	Cloudy	49°9° (likely 49°9° to 53°12°)	49°9°	0%	0 mph0 km/h, gusts 11 mph18 km/h	84%	90%	0
Sun 7a	Cloudy	48°9° (likely 48°9° to 53°12°)	48°9°	0%	0 mph0 km/h, gusts 11 mph17 km/h	86%	85%	0
Sun 8a	Cloudy	50°10° (likely 50°10° to 53°12°)	49°9°	0%	5 mph8 km/h from SSW, gusts 10 mph17 km/h	85%	79%	0
Sun 9a	Cloudy	55°13° (likely 55°13° to 57°14°)	55°13°	0%	5 mph8 km/h from SSW, gusts 11 mph18 km/h	73%	80%	1
Sun 10a	Cloudy	60°16° (likely 59°15° to 61°16°)	60°16°	0%	5 mph8 km/h from SSW, gusts 13 mph21 km/h	63%	81%	1
Sun 11a	Partly sunny	66°19° (likely 63°17° to 66°19°)	66°19°	0%	5 mph8 km/h from SW, gusts 14 mph23 km/h	53%	75%	2
Sun 12p	Cloudy	69°21° (likely 66°19° to 69°21°)	69°21°	0%	10 mph16 km/h from SW, gusts 13 mph21 km/h	48%	63%	3
Sun 1p	Cloudy	72°22° (likely 69°21° to 72°22°)	72°22°	0%	10 mph16 km/h from SW, gusts 13 mph20 km/h	44%	64%	3
Sun 2p	Cloudy	73°23° (likely 70°21° to 73°23°)	73°23°	0%	10 mph16 km/h from SSW, gusts 12 mph19 km/h	44%	67%	3
Sun 3p	Partly sunny	74°23° (likely 71°22° to 74°23°)	74°23°	0%	5 mph8 km/h from SSW, gusts 11 mph18 km/h	43%	38%	3
Sun 4p	Partly sunny	73°23° (likely 70°21° to 73°23°)	73°23°	0%	5 mph8 km/h from SSW, gusts 11 mph17 km/h	44%	50%	2
Sun 5p	Cloudy	71°22° (likely 68°20° to 71°22°)	71°22°	0%	5 mph8 km/h from SSW, gusts 10 mph17 km/h	48%	78%	1
Sun 6p	Cloudy	66°19° (likely 63°17° to 66°19°)	66°19°	0%	5 mph8 km/h from SSW, gusts 8 mph13 km/h	54%	78%	0
Sun 7p	Cloudy	62°17° (likely 60°16° to 63°17°)	62°17°	0%	5 mph8 km/h from SSW, gusts 7 mph12 km/h	63%	77%	0
Sun 8p	Cloudy	59°15° (likely 59°15° to 62°17°)	59°15°	0%	5 mph8 km/h from S, gusts 8 mph13 km/h	68%	78%	0
Sun 9p	Cloudy	57°14° (likely 57°14° to 61°16°)	57°14°	0%	5 mph8 km/h from S, gusts 8 mph13 km/h	73%	79%	0
Sun 10p	Cloudy	55°13° (likely 55°13° to 59°15°)	55°13°	0%	5 mph8 km/h from S, gusts 8 mph12 km/h	77%	77%	0
Sun 11p	Cloudy	54°12° (likely 54°12° to 58°14°)	54°12°	0%	5 mph8 km/h from SW, gusts 7 mph11 km/h	79%	80%	0
Mon 12a	Cloudy	53°12° (likely 53°12° to 56°13°)	53°12°	0%	5 mph8 km/h from WSW, gusts 4 mph6 km/h	82%	80%	0
Mon 1a	Cloudy	52°11° (likely 52°11° to 55°13°)	52°11°	0%	5 mph8 km/h from N, gusts 9 mph14 km/h	86%	79%	0
Mon 2a	Cloudy	51°11° (likely 51°11° to 55°13°)	49°9°	0%	5 mph8 km/h from N, gusts 12 mph19 km/h	91%	76%	0
Mon 3a	Cloudy	50°10° (likely 50°10° to 55°13°)	48°9°	0%	5 mph8 km/h from N, gusts 13 mph22 km/h	96%	73%	0
Mon 4a	Cloudy	49°9° (likely 49°9° to 56°13°)	47°8°	0%	5 mph8 km/h from NNE, gusts 14 mph23 km/h	100%	77%	0
Mon 5a	Partly cloudy	49°9° (likely 49°9° to 56°13°)	46°8°	0%	5 mph8 km/h from NNE, gusts 15 mph24 km/h	100%	80%	0
Mon 6a	Cloudy	48°9° (likely 48°9° to 55°13°)	45°7°	0%	5 mph8 km/h from NNE, gusts 13 mph22 km/h	100%	92%	0
Mon 7a	Cloudy	48°9° (likely 48°9° to 54°12°)	45°7°	0%	5 mph8 km/h from NE, gusts 15 mph24 km/h	100%	94%	0
Mon 8a	Cloudy	49°9° (likely 49°9° to 54°12°)	46°8°	0%	5 mph8 km/h from NNE, gusts 15 mph25 km/h	100%	82%	0
Mon 9a	Cloudy	52°11° (likely 52°11° to 56°13°)	53°12°	0%	10 mph16 km/h from NE, gusts 17 mph28 km/h	89%	89%	1
Mon 10a	Cloudy	57°14° (likely 57°14° to 60°16°)	57°14°	0%	10 mph16 km/h from NE, gusts 17 mph27 km/h	76%	88%	1
Mon 11a	Cloudy	60°16° (likely 58°14° to 61°16°)	60°16°	0%	10 mph16 km/h from NE, gusts 17 mph27 km/h	65%	87%	2
Mon 12p	Cloudy	62°17° (likely 59°15° to 62°17°)	62°17°	0%	10 mph16 km/h from NE, gusts 16 mph26 km/h	64%	92%	2
Mon 1p	Cloudy	62°17° (likely 59°15° to 62°17°)	62°17°	0%	10 mph16 km/h from NE, gusts 15 mph25 km/h	66%	92%	4
Mon 2p	Cloudy	62°17° (likely 60°16° to 62°17°)	62°17°	0%	10 mph16 km/h from NE, gusts 15 mph25 km/h	65%	84%	3
Mon 3p	Cloudy	60°16° (likely 58°14° to 62°17°)	61°16°	0%	10 mph16 km/h from NE, gusts 15 mph25 km/h	66%	84%	3

Days ahead

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

Today, Oct 24. Cloudy. High 71°22°, low 48°9°. Typical 59°15° / 37°3°. Dry. Forecasts agree.
1. Afternoon
  noon–6 PM
  Partly sunny, 70°21°
  Dry
2. Evening
  6 PM–midnight
  Clear, 59°15°
  Dry
3. Overnight
  midnight–6 AM
  Cloudy, 49°9°
  Dry
Official NWS forecast
Today: Mostly sunny. High near 71, with temperatures falling to around 68 in the afternoon. South wind around 10 mph.
Tonight: Partly cloudy, with a low around 48. South wind 0 to 5 mph.
Forecasts agreeIndependent forecasts are close; the range is narrow.
High, likely
67°19°–71°22°
Low, likely
47°8°–48°9°
Typical high / low
59°15° / 37°3°
Wind
8 mph13 km/h, gusts 17 mph28 km/h
UV peak
4
Tomorrow, Oct 25. Partly sunny. High 74°23°, low 48°9°. Typical 59°15° / 36°2°. Dry. Forecasts 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 71 in the afternoon. South southwest wind 0 to 10 mph.
Night: Partly cloudy, with a low around 48. West wind around 5 mph.
Forecasts agreeIndependent forecasts are close; the range is narrow.
High, likely
71°22°–74°23°
Low, likely
48°9°–52°11°
Typical high / low
59°15° / 36°2°
Wind
8 mph13 km/h, gusts 16 mph26 km/h
UV peak
3
Monday, Oct 26. Mostly cloudy. High 62°17°, low 45°7°. 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. Northeast wind 5 to 10 mph, with gusts as high as 20 mph.
Night: Mostly cloudy, with a low around 45.
Forecasts agreeIndependent forecasts are close; the range is narrow.
High, likely
60°16°–62°17°
Low, likely
45°7°–52°11°
Typical high / low
58°14° / 36°2°
Wind
12 mph19 km/h, gusts 22 mph35 km/h
UV peak
4
Tuesday, Oct 27. Cloudy. High 67°19°, low 53°12°. Typical 58°14° / 36°2°. Dry. Forecasts agree.
1. Morning
  6 AM–noon
  Cloudy, 52°11°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 64°18°
  Dry
3. Evening
  6 PM–midnight
  Cloudy, 58°15°
  Dry
4. Overnight
  midnight–6 AM
  Cloudy, 55°13°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Partly sunny, with a high near 67.
Night: Mostly cloudy, with a low around 53.
Forecasts agreeIndependent forecasts are close; the range is narrow.
High, likely
63°17°–67°19°
Low, likely
50°10°–53°12°
Typical high / low
58°14° / 36°2°
Wind
10 mph15 km/h, gusts 25 mph40 km/h
UV peak
2
Wednesday, Oct 28. Cloudy. High 74°23°, low 54°12°. Typical 57°14° / 36°2°. Dry. Forecasts differ.
1. Morning
  6 AM–noon
  Cloudy, 56°13°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 69°20°
  Dry
3. Evening
  6 PM–midnight
  Mostly clear, 62°16°
  Dry
4. Overnight
  midnight–6 AM
  Mostly clear, 59°15°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Partly sunny, with a high near 74.
Night: Partly cloudy, with a low around 54.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
High, likely
66°19°–74°23°
Low, likely
53°12°–56°13°
Typical high / low
57°14° / 36°2°
Wind
12 mph20 km/h, gusts 29 mph46 km/h
UV peak
3
Thursday, Oct 29. Showers. High 73°23°, low 53°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, 69°20°
  Dry
3. Evening
  6 PM–midnight
  Cloudy, 61°16°
  Dry
4. Overnight
  midnight–6 AM
  Cloudy, 56°13°
  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 before 7pm. Partly cloudy, with a low around 53.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
High, likely
66°19°–73°23°
Low, likely
53°12°–58°14°
Typical high / low
57°14° / 35°2°
Wind
14 mph22 km/h, gusts 31 mph49 km/h
UV peak
2
Friday, Oct 30. Mostly cloudy. High 72°22°, low 54°12°. Typical 56°13° / 35°2°. Dry. Forecasts differ.
1. Morning
  6 AM–noon
  Cloudy, 57°14°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 69°21°
  Dry
3. Evening
  6 PM–midnight
  Cloudy, 62°16°
  20% chance · 0.01 in0.3 mm
4. Overnight
  midnight–6 AM
  Cloudy, 59°15°
  20% chance
Hours this far out come from computer models only.
Official NWS forecast
Day: Partly sunny, with a high near 72.
Night: A slight chance of rain showers after 1am. Mostly cloudy, with a low around 54.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
High, likely
67°19°–72°22°
Low, likely
52°11°–57°14°
Typical high / low
56°13° / 35°2°
Wind
15 mph24 km/h, gusts 29 mph47 km/h
UV peak
3
Saturday, Oct 31. Drizzle. High 69°21°, low 58°14°. Typical 56°13° / 35°2°. Rain 0.07 in1.8 mm, 50% 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, 64°18°
  50% chance · 0.05 in1.2 mm
4. Overnight
  midnight–6 AM
  Drizzle, 60°15°
  50% chance · 0.14 in3.5 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
67°19°–71°22°
Low, likely
53°12°–63°17°
Typical high / low
56°13° / 35°2°
Wind
15 mph25 km/h, gusts 27 mph44 km/h
UV peak
2
Sunday, Nov 1. Showers. High 64°18°, low 58°14°. Typical 55°13° / 34°1°. Rain 0.48 in12 mm, 50% chance. Mostly agree.
1. Morning
  6 AM–noon
  Drizzle, 61°16°
  40% chance · 0.09 in2.3 mm
2. Afternoon
  noon–6 PM
  Drizzle, 63°17°
  30% chance · 0.13 in3.3 mm
3. Evening
  6 PM–midnight
  Drizzle, 61°16°
  30% chance · 0.17 in4.2 mm
4. Overnight
  midnight–6 AM
  Drizzle, 48°9°
  30% chance · 0.03 in0.6 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
62°17°–66°19°
Low, likely
57°14°–59°15°
Typical high / low
55°13° / 34°1°
Wind
21 mph33 km/h, gusts 36 mph58 km/h
UV peak
1
Monday, Nov 2. Drizzle. High 60°16°, low 49°9°. Typical 55°13° / 34°1°. Rain 0.27 in6.9 mm, 40% chance. Forecasts differ.
1. Morning
  6 AM–noon
  Cloudy, 48°9°
  30% chance
2. Afternoon
  noon–6 PM
  Drizzle, 54°12°
  30% chance · 0.08 in2 mm
3. Evening
  6 PM–midnight
  Drizzle, 51°11°
  30% chance · 0.22 in5.5 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.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
High, likely
55°13°–65°18°
Low, likely
39°4°–58°14°
Typical high / low
55°13° / 34°1°
Wind
20 mph33 km/h, gusts 37 mph60 km/h
UV peak
2

10 days15 days30 days

The outlook

Today
Dry, high 71°, low 48°.
Tomorrow
Dry, high 74°, low 48°, warming up.
Monday
Dry, high 62°, low 45°, cooling off.
Rest of week
Highs 60–74°; chance of precipitation on Saturday, 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

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 17Typical 128

Heating degree days, base 65°F

Comfort

Dry air outside (dew point 52°F).

Open the windows?

Today, 5:00 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 12°7° 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

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

Sun & moon

Sun

Daylight: 10 h 40 min; Losing 2 min 44 s a day; shortest Dec 21, 1 h 36 min less
Golden hour: 5:17–6:14 PM; Morning 6:58–7:55 AM
Blue hour: 6:14–6:25 PM; Morning 6:47–6:58 AM; first light 6:47 AM

Stars tonight? Fair

Mostly clear 9 PM–12 AM, but the moon is 99% lit and up.

Moon

Waxing gibbous

98% lit · growing

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

Looking west from Round Lake Heights. The highest point on the skyline is about 1,500 ft, 16 mi away.Skyline from USGS elevation data, heights drawn up to 6× taller. Sky, sun and moon as they are now.