Observed 9:35 PM CDT at KDKB

Marengo, IL weather

Clear and 57°14°, 11°6° warmer than a typical Oct 24.

Forecasts agree

Now 57°14°

Clear

Wind: 7 mph11 km/h; From the southeast. Up to 7 mph11 km/h through 10 AM
Dew point: 48°9°; Comfortable
UV tomorrow: 3Moderate; Moderate 12–4 PM · peak 3
Air quality: 84Moderate; Main pollutant: Ozone
Pressure: 30.38 inHg1029 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 (57°14° then, 57°14° now)

Good hours for

Low 49°9° tomorrow at 6 AM
Above 60°16° tomorrow by 10 AM
High 74°23° tomorrow at 2 PM
Below 60°16° tomorrow night after 9 PM
Fog tomorrow night 5–6 AM

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 2 PM · Mostly cloudy
Tomorrow nightDown to 49°9° by 5 AM · Mostly cloudy
Monday morningUp to 60°16° by 11 AM · Cloudy
Monday afternoonNear 62°17° · Mostly cloudy
Monday nightDown to 49°9° by 9 PM · 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 10p	Clear	55°13° (likely 54°12° to 57°14°)	55°13°	0%	5 mph8 km/h from SSE, gusts 11 mph17 km/h	76%	19%	0
Sat 11p	Partly cloudy	54°12° (likely 53°12° to 55°13°)	54°12°	0%	5 mph8 km/h from SSE, gusts 12 mph19 km/h	78%	18%	0
Sun 12a	Partly cloudy	54°12° (likely 53°12° to 54°12°)	54°12°	0%	5 mph8 km/h from S, gusts 12 mph20 km/h	78%	30%	0
Sun 1a	Partly cloudy	52°11° (likely 52°11° to 54°12°)	52°11°	0%	5 mph8 km/h from S, gusts 12 mph19 km/h	80%	41%	0
Sun 2a	Partly cloudy	52°11° (likely 52°11° to 54°12°)	52°11°	0%	5 mph8 km/h from S, gusts 11 mph18 km/h	81%	77%	0
Sun 3a	Partly cloudy	51°11° (likely 51°11° to 54°12°)	51°11°	0%	5 mph8 km/h from S, gusts 12 mph19 km/h	85%	62%	0
Sun 4a	Cloudy	50°10° (likely 50°10° to 54°12°)	50°10°	0%	0 mph0 km/h, gusts 11 mph18 km/h	87%	86%	0
Sun 5a	Cloudy	50°10° (likely 50°10° to 53°12°)	50°10°	0%	0 mph0 km/h, gusts 10 mph17 km/h	87%	81%	0
Sun 6a	Cloudy	49°9° (likely 49°9° to 52°11°)	49°9°	0%	0 mph0 km/h, gusts 9 mph15 km/h	86%	80%	0
Sun 7a	Cloudy	49°9° (likely 49°9° to 52°11°)	49°9°	0%	5 mph8 km/h from S, gusts 9 mph14 km/h	87%	78%	0
Sun 8a	Cloudy	50°10° (likely 50°10° to 53°12°)	49°9°	0%	5 mph8 km/h from S, gusts 9 mph15 km/h	87%	80%	0
Sun 9a	Cloudy	55°13° (likely 55°13° to 56°13°)	55°13°	0%	5 mph8 km/h from SSW, gusts 11 mph17 km/h	76%	80%	1
Sun 10a	Cloudy	60°16° (likely 58°14° to 60°16°)	60°16°	0%	5 mph8 km/h from SSW, gusts 13 mph21 km/h	66%	80%	1
Sun 11a	Cloudy	65°18° (likely 62°17° to 65°18°)	65°18°	0%	5 mph8 km/h from SSW, gusts 14 mph23 km/h	57%	79%	2
Sun 12p	Cloudy	69°21° (likely 65°18° to 69°21°)	69°21°	0%	5 mph8 km/h from SSW, gusts 13 mph21 km/h	50%	77%	3
Sun 1p	Cloudy	72°22° (likely 68°20° to 72°22°)	72°22°	0%	5 mph8 km/h from SSW, gusts 12 mph19 km/h	46%	57%	3
Sun 2p	Cloudy	74°23° (likely 69°21° to 74°23°)	74°23°	0%	10 mph16 km/h from SSW, gusts 11 mph17 km/h	44%	63%	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	42%	39%	3
Sun 4p	Partly sunny	74°23° (likely 71°22° to 74°23°)	74°23°	0%	5 mph8 km/h from S, gusts 10 mph17 km/h	42%	74%	2
Sun 5p	Cloudy	72°22° (likely 68°20° to 72°22°)	72°22°	0%	5 mph8 km/h from S, gusts 10 mph17 km/h	46%	80%	1
Sun 6p	Cloudy	67°19° (likely 64°18° to 67°19°)	67°19°	0%	5 mph8 km/h from S, gusts 9 mph14 km/h	53%	79%	0
Sun 7p	Cloudy	62°17° (likely 61°16° to 63°17°)	62°17°	0%	5 mph8 km/h from S, gusts 8 mph13 km/h	63%	81%	0
Sun 8p	Partly cloudy	60°16° (likely 59°15° to 61°16°)	60°16°	0%	5 mph8 km/h from S, gusts 9 mph14 km/h	68%	74%	0
Sun 9p	Partly cloudy	57°14° (likely 57°14° to 59°15°)	57°14°	0%	5 mph8 km/h from S, gusts 9 mph14 km/h	73%	75%	0
Sun 10p	Partly cloudy	56°13° (likely 56°13° to 58°14°)	56°13°	0%	5 mph8 km/h from S, gusts 9 mph14 km/h	76%	73%	0
Sun 11p	Cloudy	55°13° (likely 55°13° to 57°14°)	55°13°	0%	5 mph8 km/h from S, gusts 9 mph15 km/h	77%	75%	0
Mon 12a	Partly cloudy	54°12° (likely 54°12° to 56°13°)	54°12°	0%	5 mph8 km/h from SSE, gusts 9 mph15 km/h	79%	74%	0
Mon 1a	Partly cloudy	53°12° (likely 52°11° to 55°13°)	53°12°	0%	5 mph8 km/h from SE, gusts 8 mph13 km/h	81%	59%	0
Mon 2a	Partly cloudy	52°11° (likely 51°11° to 54°12°)	52°11°	0%	5 mph8 km/h from NE, gusts 5 mph8 km/h	84%	70%	0
Mon 3a	Mostly cloudy	51°11° (likely 50°10° to 53°12°)	50°10°	0%	5 mph8 km/h from ENE, gusts 9 mph15 km/h	88%	70%	0
Mon 4a	Mostly cloudy	50°10° (likely 49°9° to 53°12°)	49°9°	0%	5 mph8 km/h from ENE, gusts 12 mph19 km/h	95%	69%	0
Mon 5a	Fog	49°9° (likely 49°9° to 54°12°)	47°8°	0%	5 mph8 km/h from NE, gusts 14 mph22 km/h	98%	76%	0
Mon 6a	Cloudy	49°9° (likely 49°9° to 53°12°)	46°8°	0%	5 mph8 km/h from NE, gusts 15 mph25 km/h	98%	89%	0
Mon 7a	Cloudy	48°9° (likely 48°9° to 53°12°)	45°7°	0%	5 mph8 km/h from NE, gusts 16 mph26 km/h	100%	98%	0
Mon 8a	Cloudy	49°9° (likely 49°9° to 53°12°)	46°8°	0%	5 mph8 km/h from NE, gusts 15 mph24 km/h	99%	98%	0
Mon 9a	Cloudy	52°11° (likely 52°11° to 55°13°)	52°11°	0%	10 mph16 km/h from ENE, gusts 23 mph36 km/h	89%	89%	1
Mon 10a	Cloudy	57°14° (likely 55°13° to 58°14°)	57°14°	0%	10 mph16 km/h from ENE, gusts 20 mph33 km/h	78%	72%	1
Mon 11a	Cloudy	60°16° (likely 57°14° to 60°16°)	61°16°	0%	10 mph16 km/h from ENE, gusts 19 mph30 km/h	68%	85%	2
Mon 12p	Cloudy	63°17° (likely 58°14° to 63°17°)	63°17°	0%	10 mph16 km/h from ENE, gusts 17 mph28 km/h	65%	92%	3
Mon 1p	Cloudy	64°18° (likely 59°15° to 65°18°)	64°18°	0%	10 mph16 km/h from ENE, gusts 18 mph28 km/h	64%	77%	3
Mon 2p	Cloudy	65°18° (likely 59°15° to 65°18°)	65°18°	0%	10 mph16 km/h from ENE, gusts 17 mph27 km/h	61%	85%	3
Mon 3p	Cloudy	64°18° (likely 59°15° to 65°18°)	64°18°	0%	10 mph16 km/h from ENE, gusts 16 mph27 km/h	60%	85%	2
Mon 4p	Cloudy	63°17° (likely 58°14° to 63°17°)	63°17°	0%	10 mph16 km/h from ENE, gusts 17 mph27 km/h	62%	86%	2
Mon 5p	Cloudy	60°16° (likely 56°13° to 61°16°)	60°16°	0%	10 mph16 km/h from ENE, gusts 18 mph29 km/h	66%	82%	1
Mon 6p	Cloudy	56°13° (likely 53°12° to 58°14°)	56°13°	0%	10 mph16 km/h from ENE, gusts 20 mph33 km/h	73%	84%	0
Mon 7p	Cloudy	53°12° (likely 51°11° to 56°13°)	53°12°	0%	10 mph16 km/h from ENE, gusts 21 mph34 km/h	80%	83%	0
Mon 8p	Mostly cloudy	51°11° (likely 50°10° to 56°13°)	47°8°	0%	10 mph16 km/h from ENE, gusts 20 mph32 km/h	86%	76%	0
Mon 9p	Mostly cloudy	49°9° (likely 49°9° to 55°13°)	45°7°	0%	10 mph16 km/h from ENE, gusts 20 mph32 km/h	91%	71%	0

Days ahead

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

Today, Oct 24. Cloudy. High 69°21°, low 49°9°. Typical 58°14° / 39°4°. Dry. Forecasts agree.
1. Evening
  6 PM–midnight
  Partly cloudy, 54°12°
  Dry
2. Overnight
  midnight–6 AM
  Partly cloudy, 50°10°
  Dry
Official NWS forecast
Tonight: Partly cloudy, with a low around 49. South wind 0 to 5 mph.
Forecasts agreeIndependent forecasts are close; the range is narrow.
High, likely
68°20°–70°21°
Low, likely
46°8°–49°9°
Typical high / low
58°14° / 39°4°
Wind
10 mph15 km/h, gusts 17 mph27 km/h
UV peak
4
Tomorrow, Oct 25. Partly sunny. High 74°23°, low 48°9°. Typical 57°14° / 39°4°. 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
  Partly cloudy, 60°16°
  Dry
4. Overnight
  midnight–6 AM
  Mostly cloudy, 49°9°
  Dry
Official NWS forecast
Day: Mostly sunny. High near 74, with temperatures falling to around 72 in the afternoon. South southwest wind 0 to 10 mph.
Night: Partly cloudy, with a low around 48. East southeast 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
57°14° / 39°4°
Wind
9 mph14 km/h, gusts 18 mph28 km/h
UV peak
3
Monday, Oct 26. Mostly cloudy. High 65°18°, low 45°7°. Typical 57°14° / 38°3°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Cloudy, 49°9°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 65°18°
  Dry
3. Evening
  6 PM–midnight
  Mostly cloudy, 51°11°
  Dry
4. Overnight
  midnight–6 AM
  Cloudy, 50°10°
  Dry
Official NWS forecast
Day: Partly sunny, with a high near 65. East northeast wind 5 to 10 mph, with gusts as high as 20 mph.
Night: Mostly cloudy, with a low around 45. East northeast wind 5 to 10 mph, with gusts as high as 20 mph.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
61°16°–65°18°
Low, likely
45°7°–49°9°
Typical high / low
57°14° / 38°3°
Wind
14 mph23 km/h, gusts 28 mph45 km/h
UV peak
3
Tuesday, Oct 27. Mostly cloudy. High 69°21°, low 53°12°. Typical 56°13° / 38°3°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Cloudy, 52°11°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 67°19°
  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 69.
Night: Mostly cloudy, with a low around 53.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
66°19°–69°21°
Low, likely
49°9°–53°12°
Typical high / low
56°13° / 38°3°
Wind
11 mph17 km/h, gusts 22 mph36 km/h
UV peak
3
Wednesday, Oct 28. Partly sunny. High 74°23°, low 54°12°. Typical 56°13° / 38°3°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Sunny, 56°14°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 70°21°
  Dry
3. Evening
  6 PM–midnight
  Clear, 63°17°
  Dry
4. Overnight
  midnight–6 AM
  Partly cloudy, 59°15°
  20% chance
Hours this far out come from computer models only.
Official NWS forecast
Day: Mostly sunny, with a high near 74.
Night: A slight chance of rain showers after 1am. Partly cloudy, with a low around 54.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
69°21°–74°23°
Low, likely
53°12°–56°13°
Typical high / low
56°13° / 38°3°
Wind
15 mph23 km/h, gusts 29 mph46 km/h
UV peak
4
Thursday, Oct 29. Showers. High 73°23°, low 54°12°. Typical 56°13° / 37°3°. Rain 0.06 in1.5 mm, 20% chance. Forecasts differ.
1. Morning
  6 AM–noon
  Drizzle, 58°15°
  20% chance · 0.01 in0.3 mm
2. Afternoon
  noon–6 PM
  Cloudy, 68°20°
  Dry
3. Evening
  6 PM–midnight
  Mostly clear, 61°16°
  Dry
4. Overnight
  midnight–6 AM
  Drizzle, 56°13°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: A slight chance of rain showers. Mostly sunny, with a high near 73.
Night: A slight chance of rain showers before 7pm. Partly cloudy, with a low around 54.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
High, likely
65°18°–73°23°
Low, likely
54°12°–58°14°
Typical high / low
56°13° / 37°3°
Wind
14 mph23 km/h, gusts 38 mph61 km/h
UV peak
3
Friday, Oct 30. Mostly cloudy. High 73°23°, low 55°13°. Typical 55°13° / 37°3°. Dry. Forecasts differ.
1. Morning
  6 AM–noon
  Mostly sunny, 59°15°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 69°21°
  Dry
3. Evening
  6 PM–midnight
  Cloudy, 61°16°
  Dry
4. Overnight
  midnight–6 AM
  Cloudy, 58°15°
  20% chance
Hours this far out come from computer models only.
Official NWS forecast
Day: Partly sunny, with a high near 73.
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
51°11°–61°16°
Typical high / low
55°13° / 37°3°
Wind
19 mph30 km/h, gusts 30 mph49 km/h
UV peak
2
Saturday, Oct 31. Showers. High 70°21°, low 57°14°. Typical 54°12° / 36°2°. Rain 0.15 in3.8 mm, 30% chance. Forecasts differ.
1. Morning
  6 AM–noon
  Cloudy, 59°15°
  20% chance
2. Afternoon
  noon–6 PM
  Cloudy, 68°20°
  30% chance
3. Evening
  6 PM–midnight
  Drizzle, 63°17°
  50% chance · 0.12 in3 mm
4. Overnight
  midnight–6 AM
  Drizzle, 60°16°
  50% chance · 0.26 in6.6 mm
Hours this far out come from computer models only.
Official NWS forecast
Day: A chance of rain showers. Mostly cloudy, with a high near 70.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
High, likely
64°18°–72°22°
Low, likely
53°12°–61°16°
Typical high / low
54°12° / 36°2°
Wind
17 mph27 km/h, gusts 29 mph47 km/h
UV peak
1
Sunday, Nov 1. Drizzle. High 66°19°, low 57°14°. Typical 54°12° / 36°2°. Rain 0.41 in10 mm, 50% chance. Mostly agree.
1. Morning
  6 AM–noon
  Drizzle, 61°16°
  50% chance · 0.08 in2 mm
2. Afternoon
  noon–6 PM
  Drizzle, 66°19°
  40% chance · 0.05 in1.3 mm
3. Evening
  6 PM–midnight
  Cloudy, 62°16°
  30% chance · 0.06 in1.4 mm
4. Overnight
  midnight–6 AM
  Drizzle, 51°11°
  30% chance · 0.01 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
64°18°–70°21°
Low, likely
55°13°–60°16°
Typical high / low
54°12° / 36°2°
Wind
21 mph34 km/h, gusts 35 mph56 km/h
UV peak
3
Monday, Nov 2. Cloudy. High 62°17°, low 51°11°. Typical 54°12° / 35°2°. Rain 0.47 in12 mm, 30% chance. Forecasts differ.
1. Morning
  6 AM–noon
  Sunny, 52°11°
  30% chance · 0.16 in4 mm
2. Afternoon
  noon–6 PM
  Sunny, 60°16°
  30% chance · 0.29 in7.3 mm
3. Evening
  6 PM–midnight
  Clear, 53°12°
  30% chance · 0.13 in3.3 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
52°11°–67°19°
Low, likely
36°2°–59°15°
Typical high / low
54°12° / 35°2°
Wind
19 mph30 km/h, gusts 34 mph55 km/h
UV peak
3

10 days15 days30 days

The outlook

Today
Dry, high 69°, low 49°.
Tomorrow
Dry, high 74°, low 48°, warming up.
Monday
Dry, high 65°, low 45°, cooling off.
Rest of week
Highs 62–74°; 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

Kishwaukee River at Marengo

1.4 mi

Below flood stage

Level: 7.5 ft
Flow: 79 cfs

Reading from Sat 8:15 PM · NWS gauge page

Kishwaukee River at Belvidere

14 mi

Below flood stage

Level: 1.7 ft
Flow: 272 cfs

Reading from Sat 8:30 PM · NWS gauge page

Nippersink Creek at Wonder Lake

15 mi

Below flood stage

Level: 5.0 ft
Flow: 37 cfs

Reading from Sat 8:45 PM · NWS gauge page

Boone Creek near Mchenry

15 mi

Below flood stage

Level: 1.1 ft
Flow: 13 cfs

Reading from Sat 8:45 PM · NWS gauge page

For your home

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

Heating this week

About 86% less heating than a typical week.

This week 17Typical 125

Heating degree days, base 65°F

Comfort

Dry air outside (dew point 48°F).

Open the windows?

Sun, 10:00 AM–8:00 PM

Good stretch to open the windows.

Is this typical?

Crystal Lake 4nw · official normals 1991–2020 · records 2000–2026

Oct 24, today vs a typical year

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

Last 7 days vs normal

—MonOct 19
—TueOct 20
—WedOct 21
—ThuOct 22
—FriOct 23
—SatOct 24
—SunOct 25

Marengo weather by month: normals, records, snow and freeze dates

Sun & moon

Sun

Daylight: 10 h 41 min; Losing 2 min 39 s a day; shortest Dec 21, 1 h 35 min less
Golden hour: 5:19–6:16 PM; Morning 7:00–7:56 AM
Blue hour: 6:16–6:27 PM; Morning 6:49–7:00 AM; first light 6:49 AM

Stars tonight? Fair

Mostly clear 10:13 PM–12 AM, but the moon is 99% lit and up.

Moon

Waxing gibbous

98% lit · growing

Today: sets 5:30 AM · rises 4:56 PM
Full moon: Oct 25
New moon: Nov 9

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

Marengo, IL weather

Next 2 hours

Next 48 hours

Days ahead

The outlook

Today

Tomorrow

Monday

Rest of week

What changed since yesterday

Radar

Rivers

Kishwaukee River at Marengo

Kishwaukee River at Belvidere

Nippersink Creek at Wonder Lake

Boone Creek near Mchenry

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