Observed 11:35 AM CDT at KC75

LaSalle, IL weather

Sunny and 69°20°, 15°8° warmer than a typical Oct 23.

Forecasts agree

Now 69°20°

Sunny

Wind: 6 mph9 km/h; From the south. 58–6 mph9 km/h through 12 AM
Dew point: 49°9°; Comfortable
UV index: 3Moderate; Moderate until 3 PM · peak 4
Pressure: 30.31 inHg1026 hPa; Falling slowly · −0.03 inHg−0.9 hPa in 3 h

No precipitation expected in the next 2 hours.

From forecast models

Next 48 hours

Good hours for

High 76°24° today at 3 PM
Below 60°16° tonight after 9 PM
Low 48°9° tomorrow at 6 AM
Above 60°16° tomorrow by 10 AM

This afternoonUp to 76°24° by 3 PM · Clear
TonightDown to 50°10° by 5 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 50°10° by 5 AM · Partly cloudy
Sunday morningUp to 66°19° 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
Fri 12p	Sunny	69°21° (likely 66°19° to 69°21°)	69°21°	0%	5 mph8 km/h from SE, gusts 8 mph14 km/h	44%	2%	3
Fri 1p	Sunny	73°23° (likely 69°21° to 73°23°)	73°23°	0%	5 mph8 km/h from SE, gusts 9 mph15 km/h	38%	2%	4
Fri 2p	Sunny	74°23° (likely 71°22° to 74°23°)	75°24°	0%	5 mph8 km/h from SE, gusts 9 mph14 km/h	36%	2%	3
Fri 3p	Sunny	76°24° (likely 71°22° to 76°24°)	76°24°	0%	5 mph8 km/h from SE, gusts 8 mph13 km/h	34%	2%	2
Fri 4p	Sunny	76°24° (likely 70°21° to 76°24°)	76°24°	0%	5 mph8 km/h from SE, gusts 8 mph13 km/h	33%	2%	1
Fri 5p	Sunny	74°23° (likely 68°20° to 74°23°)	74°23°	0%	5 mph8 km/h from SE, gusts 8 mph13 km/h	35%	7%	0
Fri 6p	Mostly clear	69°21° (likely 63°17° to 69°21°)	69°21°	0%	5 mph8 km/h from ESE, gusts 7 mph11 km/h	41%	59%	0
Fri 7p	Mostly clear	64°18° (likely 60°16° to 64°18°)	64°18°	0%	5 mph8 km/h from ESE, gusts 8 mph13 km/h	50%	59%	0
Fri 8p	Mostly clear	61°16° (likely 58°14° to 61°16°)	61°16°	0%	5 mph8 km/h from ESE, gusts 9 mph14 km/h	55%	39%	0
Fri 9p	Mostly clear	58°14° (likely 57°14° to 58°14°)	59°15°	0%	5 mph8 km/h from ESE, gusts 8 mph12 km/h	57%	25%	0
Fri 10p	Mostly clear	57°14° (likely 56°13° to 57°14°)	57°14°	0%	5 mph8 km/h from SE, gusts 10 mph16 km/h	60%	42%	0
Fri 11p	Mostly clear	56°13° (likely 55°13° to 56°13°)	56°13°	0%	5 mph8 km/h from SE, gusts 11 mph18 km/h	63%	53%	0
Sat 12a	Mostly clear	54°12° (likely 53°12° to 55°13°)	54°12°	0%	5 mph8 km/h from ESE, gusts 10 mph16 km/h	67%	31%	0
Sat 1a	Mostly clear	53°12° (likely 52°11° to 53°12°)	53°12°	0%	5 mph8 km/h from ESE, gusts 9 mph15 km/h	70%	19%	0
Sat 2a	Mostly clear	52°11° (likely 52°11° to 52°11°)	52°11°	0%	5 mph8 km/h from ESE, gusts 9 mph15 km/h	72%	42%	0
Sat 3a	Cloudy	52°11° (likely 51°11° to 52°11°)	52°11°	0%	5 mph8 km/h from SE, gusts 8 mph13 km/h	75%	71%	0
Sat 4a	Cloudy	51°11° (likely 49°9° to 51°11°)	50°10°	0%	5 mph8 km/h from SE, gusts 8 mph13 km/h	76%	77%	0
Sat 5a	Cloudy	50°10° (likely 48°9° to 51°11°)	49°9°	0%	5 mph8 km/h from SE, gusts 7 mph12 km/h	78%	85%	0
Sat 6a	Mostly clear	48°9° (likely 48°9° to 50°10°)	48°9°	0%	5 mph8 km/h from SE, gusts 8 mph13 km/h	81%	61%	0
Sat 7a	Cloudy	48°9° (likely 47°8° to 51°11°)	48°9°	0%	5 mph8 km/h from ESE, gusts 7 mph10 km/h	83%	89%	0
Sat 8a	Cloudy	50°10° (likely 47°8° to 51°11°)	49°9°	0%	5 mph8 km/h from SE, gusts 5 mph8 km/h	81%	91%	0
Sat 9a	Cloudy	55°13° (likely 52°11° to 55°13°)	55°13°	0%	5 mph8 km/h from SSE, gusts 6 mph10 km/h	73%	84%	1
Sat 10a	Cloudy	60°16° (likely 57°14° to 60°16°)	60°16°	0%	5 mph8 km/h from SSE, gusts 10 mph15 km/h	63%	80%	2
Sat 11a	Cloudy	65°18° (likely 60°16° to 65°18°)	65°18°	0%	10 mph16 km/h from SSE, gusts 12 mph19 km/h	54%	80%	3
Sat 12p	Cloudy	68°20° (likely 64°18° to 70°21°)	68°20°	0%	10 mph16 km/h from S, gusts 12 mph20 km/h	47%	81%	3
Sat 1p	Cloudy	71°22° (likely 67°19° to 72°22°)	71°22°	0%	10 mph16 km/h from S, gusts 12 mph19 km/h	41%	80%	4
Sat 2p	Cloudy	73°23° (likely 69°21° to 73°23°)	73°23°	0%	10 mph16 km/h from S, gusts 12 mph19 km/h	37%	79%	4
Sat 3p	Cloudy	74°23° (likely 69°21° to 74°23°)	74°23°	0%	10 mph16 km/h from S, gusts 12 mph19 km/h	35%	78%	3
Sat 4p	Cloudy	74°23° (likely 69°21° to 74°23°)	74°23°	0%	10 mph16 km/h from S, gusts 11 mph18 km/h	35%	76%	2
Sat 5p	Mostly cloudy	72°22° (likely 67°19° to 72°22°)	72°22°	0%	10 mph16 km/h from SSE, gusts 12 mph19 km/h	37%	56%	1
Sat 6p	Partly cloudy	68°20° (likely 63°17° to 68°20°)	68°20°	0%	10 mph16 km/h from SSE, gusts 9 mph14 km/h	42%	44%	0
Sat 7p	Partly cloudy	64°18° (likely 60°16° to 64°18°)	64°18°	0%	5 mph8 km/h from SSE, gusts 8 mph14 km/h	51%	47%	0
Sat 8p	Mostly clear	61°16° (likely 58°14° to 61°16°)	61°16°	0%	5 mph8 km/h from SSE, gusts 7 mph12 km/h	55%	13%	0
Sat 9p	Clear	59°15° (likely 57°14° to 59°15°)	59°15°	0%	5 mph8 km/h from SE, gusts 9 mph15 km/h	59%	9%	0
Sat 10p	Clear	58°14° (likely 56°13° to 58°14°)	58°14°	0%	5 mph8 km/h from SE, gusts 10 mph16 km/h	62%	17%	0
Sat 11p	Partly cloudy	56°13° (likely 55°13° to 56°13°)	56°13°	0%	5 mph8 km/h from SE, gusts 10 mph16 km/h	65%	61%	0
Sun 12a	Partly cloudy	55°13° (likely 54°12° to 55°13°)	55°13°	0%	5 mph8 km/h from SE, gusts 10 mph16 km/h	66%	67%	0
Sun 1a	Cloudy	54°12° (likely 53°12° to 54°12°)	55°13°	0%	5 mph8 km/h from SE, gusts 9 mph14 km/h	68%	75%	0
Sun 2a	Partly cloudy	54°12° (likely 51°11° to 54°12°)	54°12°	0%	5 mph8 km/h from SE, gusts 8 mph13 km/h	69%	70%	0
Sun 3a	Partly cloudy	53°12° (likely 50°10° to 53°12°)	53°12°	0%	5 mph8 km/h from SE, gusts 7 mph12 km/h	70%	65%	0
Sun 4a	Partly cloudy	52°11° (likely 49°9° to 52°11°)	52°11°	0%	5 mph8 km/h from ESE, gusts 6 mph10 km/h	73%	68%	0
Sun 5a	Partly cloudy	50°10° (likely 49°9° to 51°11°)	50°10°	0%	5 mph8 km/h from SE, gusts 6 mph10 km/h	76%	63%	0
Sun 6a	Mostly clear	49°9° (likely 48°9° to 51°11°)	49°9°	0%	5 mph8 km/h from SE, gusts 6 mph9 km/h	78%	52%	0
Sun 7a	Partly sunny	50°10° (likely 48°9° to 52°11°)	50°10°	0%	5 mph8 km/h from SE, gusts 6 mph9 km/h	77%	64%	0
Sun 8a	Partly sunny	52°11° (likely 48°9° to 56°13°)	53°12°	0%	5 mph8 km/h from SSE, gusts 6 mph10 km/h	73%	75%	0
Sun 9a	Cloudy	57°14° (likely 54°12° to 58°14°)	57°14°	0%	5 mph8 km/h from S, gusts 8 mph13 km/h	66%	79%	1
Sun 10a	Cloudy	61°16° (likely 60°16° to 62°17°)	61°16°	0%	5 mph8 km/h from S, gusts 9 mph15 km/h	59%	80%	2
Sun 11a	Cloudy	66°19° (likely 64°18° to 68°20°)	66°19°	0%	5 mph8 km/h from S, gusts 11 mph17 km/h	51%	76%	2

Days ahead

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

Today, Oct 23. Mostly sunny. High 76°24°, low 48°9°. Typical 61°16° / 40°4°. Dry. Forecasts agree.
1. Afternoon
  noon–6 PM
  Sunny, 76°24°
  Dry
2. Evening
  6 PM–midnight
  Mostly clear, 61°16°
  Dry
3. Overnight
  midnight–6 AM
  Cloudy, 50°10°
  Dry
Official NWS forecast
Today: Sunny. High near 76, with temperatures falling to around 74 in the afternoon. Southeast wind around 5 mph.
Tonight: Mostly clear. Low around 48, with temperatures rising to around 50 overnight. East southeast wind around 5 mph.
Forecasts agreeIndependent forecasts are close; the range is narrow.
High, likely
71°22°–76°24°
Low, likely
44°7°–48°9°
Typical high / low
61°16° / 40°4°
Wind
8 mph13 km/h, gusts 15 mph24 km/h
UV peak
4
Tomorrow, Oct 24. Cloudy. High 74°23°, low 49°9°. Typical 60°16° / 40°4°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Cloudy, 50°10°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 74°23°
  Dry
3. Evening
  6 PM–midnight
  Clear, 61°16°
  Dry
4. Overnight
  midnight–6 AM
  Partly cloudy, 50°10°
  Dry
Official NWS forecast
Day: Partly sunny. High near 74, with temperatures falling to around 72 in the afternoon. South southeast wind 5 to 10 mph.
Night: Partly cloudy, with a low around 49. Southeast wind 5 to 10 mph.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
69°21°–74°23°
Low, likely
47°8°–50°10°
Typical high / low
60°16° / 40°4°
Wind
9 mph14 km/h, gusts 16 mph26 km/h
UV peak
4
Sunday, Oct 25. Partly sunny. High 76°24°, low 50°10°. Typical 60°16° / 40°4°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Cloudy, 52°11°
  Dry
2. Afternoon
  noon–6 PM
  Partly sunny, 74°23°
  Dry
3. Evening
  6 PM–midnight
  Cloudy, 62°16°
  Dry
4. Overnight
  midnight–6 AM
  Cloudy, 53°11°
  Dry
Official NWS forecast
Day: Mostly sunny, with a high near 76. South southeast wind around 5 mph, with gusts as high as 10 mph.
Night: Partly cloudy, with a low around 50.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
73°23°–76°24°
Low, likely
48°9°–51°11°
Typical high / low
60°16° / 40°4°
Wind
8 mph13 km/h, gusts 14 mph23 km/h
UV peak
4
Monday, Oct 26. Cloudy. High 73°23°, low 48°9°. Typical 59°15° / 39°4°. Dry. Forecasts differ.
1. Morning
  6 AM–noon
  Cloudy, 52°11°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 71°21°
  Dry
3. Evening
  6 PM–midnight
  Cloudy, 59°15°
  Dry
4. Overnight
  midnight–6 AM
  Cloudy, 51°11°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Partly sunny, with a high near 73.
Night: Mostly cloudy, with a low around 48.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
High, likely
68°20°–74°23°
Low, likely
48°9°–53°12°
Typical high / low
59°15° / 39°4°
Wind
10 mph16 km/h, gusts 21 mph33 km/h
UV peak
3
Tuesday, Oct 27. Cloudy. High 69°21°, low 49°9°. Typical 59°15° / 39°4°. Dry. Forecasts differ.
1. Morning
  6 AM–noon
  Cloudy, 53°11°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 67°19°
  Dry
3. Evening
  6 PM–midnight
  Cloudy, 60°16°
  Dry
4. Overnight
  midnight–6 AM
  Partly cloudy, 55°13°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Mostly cloudy, with a high near 69.
Night: Mostly cloudy, with a low around 49.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
High, likely
65°18°–71°22°
Low, likely
48°9°–53°12°
Typical high / low
59°15° / 39°4°
Wind
9 mph14 km/h, gusts 25 mph40 km/h
UV peak
2
Wednesday, Oct 28. Cloudy. High 72°22°, low 50°10°. Typical 58°14° / 38°3°. Dry. Forecasts differ.
1. Morning
  6 AM–noon
  Sunny, 56°13°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 70°21°
  Dry
3. Evening
  6 PM–midnight
  Clear, 60°16°
  Dry
4. Overnight
  midnight–6 AM
  Partly cloudy, 53°12°
  Dry
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. Partly cloudy, with a low around 50.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
High, likely
67°19°–73°23°
Low, likely
49°9°–55°13°
Typical high / low
58°14° / 38°3°
Wind
14 mph22 km/h, gusts 25 mph40 km/h
UV peak
4
Thursday, Oct 29. Showers. High 70°21°, low 46°8°. Typical 58°14° / 38°3°. Rain 0.05 in1.3 mm, 20% chance. Forecasts differ.
1. Morning
  6 AM–noon
  Partly sunny, 53°12°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 61°16°
  Dry
3. Evening
  6 PM–midnight
  Clear, 51°11°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 43°6°
  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 70.
Night: A chance of rain showers. Mostly cloudy, with a low around 46.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
High, likely
62°17°–71°22°
Low, likely
41°5°–54°12°
Typical high / low
58°14° / 38°3°
Wind
14 mph23 km/h, gusts 37 mph60 km/h
UV peak
2
Friday, Oct 30. Drizzle. High 60°16°, low 44°7°. Typical 57°14° / 38°3°. Rain 0.06 in1.5 mm, 20% chance. Forecasts differ.
1. Morning
  6 AM–noon
  Cloudy, 44°7°
  Dry
2. Afternoon
  noon–6 PM
  Drizzle, 59°15°
  Dry
3. Evening
  6 PM–midnight
  Clear, 48°9°
  20% chance · 0.04 in0.9 mm
4. Overnight
  midnight–6 AM
  Cloudy, 42°6°
  30% 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
50°10°–71°22°
Low, likely
39°4°–54°12°
Typical high / low
57°14° / 38°3°
Wind
12 mph19 km/h, gusts 23 mph36 km/h
Saturday, Oct 31. Drizzle. High 63°17°, low 45°7°. Typical 56°13° / 37°3°. Rain 0.07 in1.8 mm, 40% chance. Forecasts differ.
1. Morning
  6 AM–noon
  Cloudy, 45°7°
  30% chance
2. Afternoon
  noon–6 PM
  Partly sunny, 61°16°
  30% chance
3. Evening
  6 PM–midnight
  Clear, 54°12°
  30% chance
4. Overnight
  midnight–6 AM
  Cloudy, 53°11°
  40% chance · 0.03 in0.7 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
57°14°–68°20°
Low, likely
38°3°–57°14°
Typical high / low
56°13° / 37°3°
Wind
12 mph19 km/h, gusts 22 mph35 km/h
UV peak
2
Sunday, Nov 1. Cloudy. High 65°18°, low 53°12°. Typical 56°13° / 37°3°. Rain 0.17 in4.3 mm, 40% chance. Forecasts agree.
1. Morning
  6 AM–noon
  Cloudy, 54°12°
  30% chance · 0.03 in0.7 mm
2. Afternoon
  noon–6 PM
  Cloudy, 63°17°
  30% chance
3. Evening
  6 PM–midnight
  Clear, 57°14°
  20% 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 agreeIndependent forecasts are close; the range is narrow.
High, likely
64°18°–67°19°
Low, likely
52°11°–56°13°
Typical high / low
56°13° / 37°3°
Wind
13 mph21 km/h, gusts 28 mph44 km/h
UV peak
3

10 days15 days30 days

The outlook

Today
Dry, high 76°, low 48°.
Tomorrow
Dry, high 74°, low 49°.
Sunday
Dry, high 76°, low 50°.
Rest of week
Mostly dry, highs 60–73°.

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

Illinois River near La Salle

1.1 mi

Below flood stage

Level: 11.8 ft
Flow: 7,220 cfs

Forecast peak 11.8 ft Fri 1 PM

Reading from Fri 10:45 AM · NWS gauge page

Illinois River at Starved Rock Lock (tailwater)

5.7 mi

Below flood stage

Level: 442 ft
Flow: 5,310 cfs

Forecast peak 442 ft Fri 1 PM

Reading from Fri 10 AM · NWS gauge page

Illinois River at Marseilles Lock (tailwater)

18 mi

Below flood stage

Level: 459 ft
Flow: 2,950 cfs

Forecast peak 459 ft Fri 1 PM

Reading from Fri 10:30 AM · NWS gauge page

Illinois River near Henry

21 mi

Below flood stage

Level: 14.8 ft
Flow: 4,960 cfs

Forecast peak 14.8 ft Fri 1 PM

Reading from Fri 10:45 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 14Typical 111

Heating degree days, base 65°F

Comfort

Dry air outside (dew point 49°F).

Open the windows?

Today, 1:00 PM–8:00 PM

Good stretch to open the windows (air quality forecast not available for part of this window).

Is this typical?

Ottawa 4sw · official normals 1991–2020 · records 1890–2026

Oct 23, today vs a typical year

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

Last 7 days vs normal

On average 3°1° colder than normal (daily mean temperature).

−9°−5°SatOct 17
−8°−4°SunOct 18
−2°−1°MonOct 19
+2°+1°TueOct 20
+5°+3°WedOct 21
—ThuOct 22
—FriOct 23

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

Sun & moon

Sun

Daylight: 10 h 46 min; Losing 2 min 35 s a day; shortest Dec 21, 1 h 35 min less
Golden hour: 5:25–6:20 PM; Morning 7:00–7:55 AM
Blue hour: 6:20–6:31 PM; Morning 6:49–7:00 AM; first light 6:49 AM

Stars tonight? Poor

Clouds most of the night (about 51% cover).

Moon

Waxing gibbous

92% lit · growing

Today: sets 4:22 AM · rises 4:36 PM
Full moon: Oct 25
New moon: Nov 9

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

LaSalle, IL weather

Next 2 hours

Next 48 hours

Days ahead

The outlook

Today

Tomorrow

Sunday

Rest of week

What changed since yesterday

Radar

Rivers

Illinois River near La Salle

Illinois River at Starved Rock Lock (tailwater)

Illinois River at Marseilles Lock (tailwater)

Illinois River near Henry

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