Observed 9:30 AM CDT at KDPA

Algonquin, IL weather

Sunny and 57°14°, 15°8° warmer than a typical Oct 23.

Forecasts agree

Now 57°14°

Sunny

Wind: 3 mph5 km/h; From the south-southeast. 35–5 mph8 km/h through 9 PM
Dew point: 48°9°; Comfortable
UV index: 0Low; Moderate 12–3 PM · peak 4
Air quality (notable): 117Unhealthy for sensitive groups; PM2.5 (fine particles) · tomorrow moderate
Pressure: 30.35 inHg1028 hPa; Steady over the last 3 h

No precipitation expected in the next 2 hours.

From forecast models

Next 48 hours

7°4° warmer than this time yesterday (46°8° then, 53°12° now)

Good hours for

Above 60°16° today by 11 AM
High 72°22° today at 2 PM
Below 60°16° tonight after 8 PM
Low 48°9° tomorrow at 7 AM

This morningUp to 63°17° by 11 AM · Clear
This afternoonUp to 72°22° by 2 PM · Clear
TonightDown to 49°9° by 5 AM · Mostly cloudy
Tomorrow morningUp to 63°17° by 11 AM · Mostly cloudy
Tomorrow afternoonUp to 70°21° by 3 PM · Mostly cloudy
Tomorrow nightDown to 51°11° by 5 AM · Mostly cloudy
Sunday morningNear 52°11° · 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
Fri 9a	Sunny	52°11° (likely 50°10° to 54°12°)	52°11°	0%	0 mph0 km/h, gusts 7 mph11 km/h	87%	12%	0
Fri 10a	Sunny	57°14° (likely 56°13° to 59°15°)	57°14°	0%	5 mph8 km/h from SE, gusts 9 mph14 km/h	77%	0%	1
Fri 11a	Sunny	63°17° (likely 60°16° to 64°18°)	63°17°	0%	5 mph8 km/h from SSE, gusts 11 mph18 km/h	63%	0%	2
Fri 12p	Sunny	68°20° (likely 63°17° to 68°20°)	68°20°	0%	5 mph8 km/h from SSE, gusts 10 mph16 km/h	51%	0%	3
Fri 1p	Sunny	71°22° (likely 66°19° to 71°22°)	71°22°	0%	5 mph8 km/h from SSE, gusts 10 mph16 km/h	44%	0%	4
Fri 2p	Sunny	72°22° (likely 68°20° to 72°22°)	72°22°	0%	5 mph8 km/h from SSE, gusts 10 mph16 km/h	42%	1%	3
Fri 3p	Sunny	72°22° (likely 68°20° to 72°22°)	72°22°	0%	5 mph8 km/h from SSE, gusts 10 mph15 km/h	40%	2%	2
Fri 4p	Sunny	72°22° (likely 68°20° to 72°22°)	72°22°	0%	5 mph8 km/h from SE, gusts 9 mph14 km/h	40%	5%	1
Fri 5p	Mostly sunny	70°21° (likely 65°18° to 70°21°)	70°21°	0%	5 mph8 km/h from SE, gusts 9 mph15 km/h	44%	35%	0
Fri 6p	Mostly clear	65°18° (likely 60°16° to 65°18°)	65°18°	0%	5 mph8 km/h from ESE, gusts 9 mph15 km/h	51%	20%	0
Fri 7p	Cloudy	60°16° (likely 56°13° to 60°16°)	60°16°	0%	5 mph8 km/h from ESE, gusts 10 mph15 km/h	61%	57%	0
Fri 8p	Mostly clear	58°14° (likely 55°13° to 58°14°)	58°14°	0%	5 mph8 km/h from ESE, gusts 10 mph16 km/h	67%	52%	0
Fri 9p	Cloudy	57°14° (likely 54°12° to 57°14°)	57°14°	0%	5 mph8 km/h from ESE, gusts 10 mph16 km/h	73%	72%	0
Fri 10p	Cloudy	55°13° (likely 53°12° to 55°13°)	55°13°	0%	5 mph8 km/h from ESE, gusts 10 mph16 km/h	78%	65%	0
Fri 11p	Mostly clear	54°12° (likely 53°12° to 54°12°)	54°12°	0%	5 mph8 km/h from SE, gusts 11 mph18 km/h	79%	49%	0
Sat 12a	Mostly clear	53°12° (likely 52°11° to 53°12°)	53°12°	0%	5 mph8 km/h from SSE, gusts 12 mph19 km/h	80%	42%	0
Sat 1a	Partly cloudy	53°12° (likely 51°11° to 53°12°)	53°12°	0%	5 mph8 km/h from SSE, gusts 11 mph18 km/h	79%	42%	0
Sat 2a	Partly cloudy	52°11° (likely 50°10° to 52°11°)	52°11°	0%	5 mph8 km/h from SSE, gusts 12 mph19 km/h	80%	72%	0
Sat 3a	Partly cloudy	51°11° (likely 50°10° to 52°11°)	50°10°	0%	5 mph8 km/h from SSE, gusts 12 mph19 km/h	81%	67%	0
Sat 4a	Cloudy	50°10° (likely 49°9° to 51°11°)	49°9°	0%	5 mph8 km/h from SSE, gusts 12 mph19 km/h	83%	88%	0
Sat 5a	Cloudy	49°9° (likely 48°9° to 51°11°)	48°9°	0%	5 mph8 km/h from SSE, gusts 12 mph19 km/h	84%	96%	0
Sat 6a	Cloudy	49°9° (likely 48°9° to 51°11°)	47°8°	0%	5 mph8 km/h from SSE, gusts 12 mph19 km/h	86%	94%	0
Sat 7a	Cloudy	48°9° (likely 47°8° to 51°11°)	47°8°	0%	5 mph8 km/h from SSE, gusts 12 mph19 km/h	87%	80%	0
Sat 8a	Cloudy	50°10° (likely 48°9° to 51°11°)	48°9°	0%	5 mph8 km/h from SSE, gusts 11 mph18 km/h	86%	77%	0
Sat 9a	Cloudy	54°12° (likely 51°11° to 54°12°)	54°12°	0%	5 mph8 km/h from S, gusts 13 mph21 km/h	81%	71%	1
Sat 10a	Cloudy	58°14° (likely 55°13° to 58°14°)	58°14°	0%	10 mph16 km/h from S, gusts 15 mph25 km/h	74%	68%	2
Sat 11a	Cloudy	63°17° (likely 59°15° to 63°17°)	63°17°	0%	10 mph16 km/h from S, gusts 16 mph26 km/h	65%	78%	2
Sat 12p	Cloudy	66°19° (likely 62°17° to 66°19°)	66°19°	0%	10 mph16 km/h from S, gusts 16 mph26 km/h	59%	81%	3
Sat 1p	Cloudy	68°20° (likely 64°18° to 68°20°)	68°20°	0%	10 mph16 km/h from S, gusts 15 mph24 km/h	54%	86%	3
Sat 2p	Cloudy	69°21° (likely 65°18° to 69°21°)	69°21°	0%	10 mph16 km/h from S, gusts 15 mph24 km/h	50%	75%	3
Sat 3p	Cloudy	70°21° (likely 66°19° to 70°21°)	70°21°	0%	10 mph16 km/h from S, gusts 14 mph23 km/h	49%	65%	2
Sat 4p	Mostly cloudy	70°21° (likely 65°18° to 70°21°)	70°21°	0%	10 mph16 km/h from S, gusts 15 mph23 km/h	48%	53%	2
Sat 5p	Mostly cloudy	68°20° (likely 64°18° to 68°20°)	69°21°	0%	10 mph16 km/h from S, gusts 15 mph24 km/h	50%	41%	1
Sat 6p	Mostly cloudy	65°18° (likely 60°16° to 65°18°)	65°18°	0%	10 mph16 km/h from S, gusts 13 mph21 km/h	57%	62%	0
Sat 7p	Cloudy	62°17° (likely 58°14° to 62°17°)	62°17°	0%	5 mph8 km/h from SSE, gusts 11 mph18 km/h	64%	67%	0
Sat 8p	Partly cloudy	60°16° (likely 56°13° to 60°16°)	60°16°	0%	5 mph8 km/h from SSE, gusts 11 mph18 km/h	66%	70%	0
Sat 9p	Cloudy	59°15° (likely 55°13° to 59°15°)	59°15°	0%	5 mph8 km/h from S, gusts 12 mph19 km/h	68%	61%	0
Sat 10p	Partly cloudy	57°14° (likely 54°12° to 58°14°)	57°14°	0%	5 mph8 km/h from S, gusts 13 mph20 km/h	70%	45%	0
Sat 11p	Partly cloudy	56°13° (likely 54°12° to 56°13°)	56°13°	0%	5 mph8 km/h from S, gusts 14 mph22 km/h	72%	50%	0
Sun 12a	Partly cloudy	55°13° (likely 53°12° to 55°13°)	55°13°	0%	5 mph8 km/h from S, gusts 13 mph21 km/h	72%	64%	0
Sun 1a	Partly cloudy	55°13° (likely 52°11° to 55°13°)	55°13°	0%	5 mph8 km/h from S, gusts 13 mph21 km/h	72%	70%	0
Sun 2a	Cloudy	54°12° (likely 51°11° to 54°12°)	54°12°	0%	5 mph8 km/h from S, gusts 14 mph22 km/h	73%	77%	0
Sun 3a	Cloudy	54°12° (likely 50°10° to 54°12°)	54°12°	0%	5 mph8 km/h from S, gusts 13 mph21 km/h	74%	78%	0
Sun 4a	Cloudy	53°12° (likely 49°9° to 53°12°)	53°12°	0%	5 mph8 km/h from S, gusts 13 mph22 km/h	76%	81%	0
Sun 5a	Cloudy	51°11° (likely 49°9° to 52°11°)	51°11°	0%	5 mph8 km/h from S, gusts 13 mph21 km/h	78%	84%	0
Sun 6a	Cloudy	51°11° (likely 49°9° to 52°11°)	50°10°	0%	5 mph8 km/h from S, gusts 12 mph20 km/h	79%	85%	0
Sun 7a	Cloudy	51°11° (likely 49°9° to 52°11°)	51°11°	0%	5 mph8 km/h from S, gusts 12 mph19 km/h	80%	75%	0
Sun 8a	Mostly cloudy	53°12° (likely 49°9° to 53°12°)	53°12°	0%	5 mph8 km/h from SSW, gusts 11 mph18 km/h	78%	69%	0

Days ahead

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

Today, Oct 23. Fog. High 72°22°, low 48°9°. Typical 57°14° / 39°4°. Dry. Forecasts agree.
1. Morning
  6 AM–noon
  Sunny, 63°17°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 72°22°
  Dry
3. Evening
  6 PM–midnight
  Cloudy, 58°14°
  Dry
4. Overnight
  midnight–6 AM
  Partly cloudy, 49°9°
  Dry
Official NWS forecast
Today: Patchy fog before 10am. Sunny. High near 72, with temperatures falling to around 70 in the afternoon. Southeast wind 0 to 5 mph.
Tonight: Partly cloudy, with a low around 48. Southeast wind around 5 mph.
Forecasts agreeIndependent forecasts are close; the range is narrow.
High, likely
68°20°–72°22°
Low, likely
45°7°–48°9°
Typical high / low
57°14° / 39°4°
Wind
7 mph11 km/h, gusts 15 mph24 km/h
UV peak
4
Tomorrow, Oct 24. Cloudy. High 70°21°, low 51°11°. Typical 57°14° / 39°4°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Cloudy, 50°10°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 70°21°
  Dry
3. Evening
  6 PM–midnight
  Cloudy, 60°16°
  Dry
4. Overnight
  midnight–6 AM
  Cloudy, 51°11°
  Dry
Official NWS forecast
Day: Partly sunny. High near 70, with temperatures falling to around 68 in the afternoon. South wind 5 to 10 mph.
Night: Mostly cloudy, with a low around 51. South wind 5 to 10 mph.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
66°19°–70°21°
Low, likely
47°8°–51°11°
Typical high / low
57°14° / 39°4°
Wind
10 mph16 km/h, gusts 20 mph32 km/h
UV peak
3
Sunday, Oct 25. Cloudy. High 72°22°, low 50°10°. Typical 56°13° / 38°3°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Cloudy, 53°12°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 70°21°
  Dry
3. Evening
  6 PM–midnight
  Mostly clear, 59°15°
  Dry
4. Overnight
  midnight–6 AM
  Cloudy, 52°11°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Mostly sunny, with a high near 72. South southwest wind around 5 mph.
Night: Mostly cloudy, with a low around 50.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
68°20°–72°22°
Low, likely
49°9°–52°11°
Typical high / low
56°13° / 38°3°
Wind
10 mph15 km/h, gusts 20 mph31 km/h
UV peak
3
Monday, Oct 26. Cloudy. High 66°19°, low 47°8°. Typical 56°13° / 38°3°. Dry. Forecasts differ.
1. Morning
  6 AM–noon
  Cloudy, 51°11°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 65°18°
  Dry
3. Evening
  6 PM–midnight
  Cloudy, 54°12°
  Dry
4. Overnight
  midnight–6 AM
  Cloudy, 51°10°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Mostly cloudy, with a high near 66.
Night: Mostly cloudy, with a low around 47.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
High, likely
60°16°–69°21°
Low, likely
47°8°–50°10°
Typical high / low
56°13° / 38°3°
Wind
12 mph19 km/h, gusts 25 mph40 km/h
UV peak
2
Tuesday, Oct 27. Mostly cloudy. High 63°17°, low 48°9°. Typical 56°13° / 38°3°. Dry. Forecasts differ.
1. Morning
  6 AM–noon
  Cloudy, 52°11°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 63°17°
  Dry
3. Evening
  6 PM–midnight
  Mostly clear, 56°14°
  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 cloudy, with a high near 63.
Night: Mostly cloudy, with a low around 48.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
High, likely
59°15°–66°19°
Low, likely
48°9°–52°11°
Typical high / low
56°13° / 38°3°
Wind
10 mph15 km/h, gusts 29 mph47 km/h
UV peak
3
Wednesday, Oct 28. Cloudy. High 68°20°, low 49°9°. Typical 55°13° / 37°3°. Dry. Forecasts differ.
1. Morning
  6 AM–noon
  Mostly sunny, 55°13°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 67°19°
  Dry
3. Evening
  6 PM–midnight
  Clear, 60°15°
  Dry
4. Overnight
  midnight–6 AM
  Mostly clear, 56°13°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Partly sunny, with a high near 68.
Night: A slight chance of rain showers after 1am. Partly cloudy, with a low around 49.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
High, likely
64°18°–70°21°
Low, likely
49°9°–55°13°
Typical high / low
55°13° / 37°3°
Wind
14 mph22 km/h, gusts 25 mph40 km/h
UV peak
3
Thursday, Oct 29. Showers. High 66°19°, low 45°7°. Typical 55°13° / 37°3°. Rain 0.04 in1 mm, 20% chance. Forecasts differ.
1. Morning
  6 AM–noon
  Drizzle, 56°13°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 61°16°
  Dry
3. Evening
  6 PM–midnight
  Clear, 50°10°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 39°4°
  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 66.
Night: A chance of rain showers. Mostly cloudy, with a low around 45.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
High, likely
61°16°–69°21°
Low, likely
44°7°–51°11°
Typical high / low
55°13° / 37°3°
Wind
15 mph25 km/h, gusts 43 mph69 km/h
Friday, Oct 30. Sunny. High 58°14°, low 41°5°. Typical 54°12° / 37°3°. Rain 0.02 in0.5 mm, 20% chance. Forecasts differ.
1. Morning
  6 AM–noon
  Sunny, 40°4°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 54°12°
  Dry
3. Evening
  6 PM–midnight
  Clear, 45°7°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 39°4°
  20% chance · 0.04 in1 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
50°10°–68°20°
Low, likely
37°3°–52°11°
Typical high / low
54°12° / 37°3°
Wind
11 mph17 km/h, gusts 29 mph46 km/h
UV peak
2
Saturday, Oct 31. Drizzle. High 59°15°, low 43°6°. Typical 54°12° / 36°2°. Rain 0.1 in2.5 mm, 40% chance. Forecasts differ.
1. Morning
  6 AM–noon
  Sunny, 42°5°
  30% chance
2. Afternoon
  noon–6 PM
  Cloudy, 57°14°
  30% chance
3. Evening
  6 PM–midnight
  Cloudy, 51°11°
  40% chance
4. Overnight
  midnight–6 AM
  Cloudy, 51°11°
  40% chance
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°–66°19°
Low, likely
33°1°–56°13°
Typical high / low
54°12° / 36°2°
Wind
11 mph18 km/h, gusts 22 mph35 km/h
UV peak
1
Sunday, Nov 1. Cloudy. High 63°17°, low 52°11°. Typical 53°12° / 36°2°. Rain 0.1 in2.5 mm, 40% chance. Mostly agree.
1. Morning
  6 AM–noon
  Cloudy, 53°12°
  40% chance
2. Afternoon
  noon–6 PM
  Cloudy, 61°16°
  40% chance
3. Evening
  6 PM–midnight
  Clear, 54°12°
  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
61°16°–65°18°
Low, likely
49°9°–55°13°
Typical high / low
53°12° / 36°2°
Wind
13 mph21 km/h, gusts 27 mph44 km/h
UV peak
2

10 days15 days30 days

The outlook

Today
Dry, high 72°, low 48°.
Tomorrow
Dry, high 70°, low 51°.
Sunday
Dry, high 72°, low 50°.
Rest of week
Mostly dry, highs 58–68°.

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

Fox River at Algonquin tailwater

1.4 mi

Below flood stage

Level: 5.8 ft
Flow: 898 cfs

Reading from Fri 8:30 AM · NWS gauge page

Fox River at Algonquin

1.7 mi

Below flood stage

Level: 1.8 ft
Flow: 1,050 cfs

Reading from Fri 8:45 AM · NWS gauge page

Tyler Creek at Elgin

7.1 mi

Below flood stage

Level: 5.7 ft
Flow: 11 cfs

Reading from Fri 7:45 AM · NWS gauge page

Fox River at Elgin

7.2 mi

Below flood stage

Level: 710 ft

Reading from Fri 7 AM · NWS gauge page

For your home

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

Heating this week

About 89% less heating than a typical week.

This week 14Typical 126

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?

BARRINGTON 3SW · official normals 1991–2020 · records 1962–2026

Oct 23, today vs a typical year

Today’s expected high is 15°8° warmer than typical.

Last 7 days vs normal

On average 0° colder than normal (daily mean temperature).

−6°−3°SatOct 17
−4°−2°SunOct 18
+1°MonOct 19
+4°+2°TueOct 20
+4°+2°WedOct 21
—ThuOct 22
—FriOct 23

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

Sun & moon

Sun

Daylight: 10 h 44 min; Losing 2 min 39 s a day; shortest Dec 21, 1 h 38 min less
Golden hour: 5:20–6:16 PM; Morning 6:57–7:54 AM
Blue hour: 6:16–6:27 PM; Morning 6:46–6:57 AM; first light 6:46 AM

Stars tonight? Poor

Clouds most of the night (about 63% cover).

Moon

Waxing gibbous

92% lit · growing

Today: sets 4:19 AM · rises 4:33 PM
Full moon: Oct 25
New moon: Nov 9

Looking northwest from Algonquin.Skyline from USGS elevation data, heights drawn up to 6× taller. Sky, sun and moon as they are now.

Algonquin, IL weather

Next 2 hours

Next 48 hours

Days ahead

The outlook

Today

Tomorrow

Sunday

Rest of week

What changed since yesterday

Radar

Rivers

Fox River at Algonquin tailwater

Fox River at Algonquin

Tyler Creek at Elgin

Fox River at Elgin

For your home

Heating this week

Comfort

Open the windows?

Is this typical?

Oct 23, today vs a typical year

Last 7 days vs normal

Sun & moon

Sun

Stars tonight? Poor

Moon