Observed 6:15 PM CDT at KPNT

Ottawa, IL weather

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

Forecasts agree

Now 64°18°

Clear

Wind: 5 mph8 km/h; From the south-southeast. Up to 5 mph8 km/h through 7 AM
Dew point: 46°8°; Comfortable
UV tomorrow: 3Moderate; Moderate 12–4 PM · peak 3
Pressure: 30.36 inHg1028 hPa; Steady over the last 3 h

No precipitation expected in the next 2 hours.

From forecast models

Next 48 hours

Good hours for

Below 60°16° tonight after 9 PM
Low 49°9° tomorrow at 7 AM
Above 60°16° tomorrow by 10 AM
High 77°25° tomorrow at 3 PM

TonightDown to 50°10° by 5 AM · Partly cloudy
Tomorrow morningUp to 67°19° by 11 AM · Cloudy
Tomorrow afternoonUp to 77°25° by 3 PM · Mostly cloudy
Tomorrow nightDown to 52°11° by 4 AM · Mostly cloudy
Monday morningUp to 64°18° by 11 AM · Mostly cloudy
Monday afternoonUp to 72°22° by 3 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 7p	Partly cloudy	64°18° (likely 60°16° to 64°18°)	64°18°	0%	5 mph8 km/h from SSE, gusts 9 mph15 km/h	50%	54%	0
Sat 8p	Partly cloudy	61°16° (likely 59°15° to 61°16°)	61°16°	0%	5 mph8 km/h from SSE, gusts 9 mph15 km/h	54%	47%	0
Sat 9p	Clear	59°15° (likely 57°14° to 59°15°)	59°15°	0%	5 mph8 km/h from SE, gusts 9 mph14 km/h	59%	11%	0
Sat 10p	Clear	57°14° (likely 55°13° to 57°14°)	57°14°	0%	5 mph8 km/h from SE, gusts 12 mph19 km/h	64%	43%	0
Sat 11p	Mostly clear	56°13° (likely 54°12° to 56°13°)	56°13°	0%	5 mph8 km/h from SE, gusts 11 mph17 km/h	68%	43%	0
Sun 12a	Clear	55°13° (likely 52°11° to 55°13°)	55°13°	0%	5 mph8 km/h from SSE, gusts 10 mph16 km/h	72%	11%	0
Sun 1a	Partly cloudy	54°12° (likely 51°11° to 54°12°)	54°12°	0%	0 mph0 km/h, gusts 10 mph17 km/h	74%	37%	0
Sun 2a	Partly cloudy	53°12° (likely 51°11° to 53°12°)	53°12°	0%	0 mph0 km/h, gusts 10 mph16 km/h	75%	47%	0
Sun 3a	Cloudy	52°11° (likely 50°10° to 52°11°)	52°11°	0%	0 mph0 km/h, gusts 9 mph14 km/h	77%	79%	0
Sun 4a	Cloudy	51°11° (likely 49°9° to 52°11°)	51°11°	0%	0 mph0 km/h, gusts 8 mph13 km/h	79%	80%	0
Sun 5a	Cloudy	50°10° (likely 49°9° to 51°11°)	51°11°	0%	0 mph0 km/h, gusts 7 mph11 km/h	79%	91%	0
Sun 6a	Cloudy	50°10° (likely 48°9° to 50°10°)	50°10°	0%	0 mph0 km/h, gusts 7 mph11 km/h	79%	89%	0
Sun 7a	Cloudy	49°9° (likely 48°9° to 51°11°)	49°9°	0%	0 mph0 km/h, gusts 6 mph9 km/h	80%	90%	0
Sun 8a	Cloudy	51°11° (likely 48°9° to 52°11°)	50°10°	0%	5 mph8 km/h from S, gusts 7 mph11 km/h	79%	92%	0
Sun 9a	Cloudy	57°14° (likely 53°12° to 57°14°)	57°14°	0%	5 mph8 km/h from S, gusts 8 mph14 km/h	68%	88%	1
Sun 10a	Cloudy	62°17° (likely 59°15° to 62°17°)	62°17°	0%	5 mph8 km/h from S, gusts 9 mph15 km/h	59%	78%	2
Sun 11a	Cloudy	67°19° (likely 64°18° to 67°19°)	67°19°	0%	5 mph8 km/h from S, gusts 10 mph17 km/h	50%	78%	2
Sun 12p	Cloudy	70°21° (likely 68°20° to 70°21°)	70°21°	0%	5 mph8 km/h from S, gusts 9 mph14 km/h	44%	80%	3
Sun 1p	Sunny	73°23° (likely 70°21° to 73°23°)	73°23°	0%	5 mph8 km/h from S, gusts 9 mph14 km/h	41%	42%	3
Sun 2p	Sunny	76°24° (likely 72°22° to 76°24°)	76°24°	0%	5 mph8 km/h from S, gusts 8 mph13 km/h	37%	39%	3
Sun 3p	Cloudy	77°25° (likely 72°22° to 77°25°)	77°25°	0%	5 mph8 km/h from S, gusts 7 mph12 km/h	35%	75%	3
Sun 4p	Cloudy	77°25° (likely 72°22° to 77°25°)	77°25°	0%	5 mph8 km/h from S, gusts 7 mph12 km/h	36%	76%	2
Sun 5p	Cloudy	74°23° (likely 69°21° to 74°23°)	74°23°	0%	5 mph8 km/h from S, gusts 6 mph10 km/h	39%	78%	1
Sun 6p	Cloudy	71°22° (likely 64°18° to 71°22°)	71°22°	0%	5 mph8 km/h from SSE, gusts 6 mph10 km/h	43%	78%	0
Sun 7p	Cloudy	66°19° (likely 62°17° to 66°19°)	66°19°	0%	5 mph8 km/h from SSE, gusts 7 mph12 km/h	51%	78%	0
Sun 8p	Cloudy	63°17° (likely 60°16° to 63°17°)	63°17°	0%	5 mph8 km/h from SSE, gusts 7 mph11 km/h	55%	79%	0
Sun 9p	Partly cloudy	61°16° (likely 58°14° to 61°16°)	61°16°	0%	5 mph8 km/h from S, gusts 7 mph11 km/h	60%	70%	0
Sun 10p	Cloudy	59°15° (likely 57°14° to 59°15°)	59°15°	0%	5 mph8 km/h from S, gusts 7 mph11 km/h	64%	76%	0
Sun 11p	Cloudy	57°14° (likely 56°13° to 57°14°)	57°14°	0%	5 mph8 km/h from SSE, gusts 7 mph11 km/h	67%	76%	0
Mon 12a	Cloudy	56°13° (likely 55°13° to 56°13°)	56°13°	0%	5 mph8 km/h from S, gusts 7 mph11 km/h	69%	78%	0
Mon 1a	Cloudy	55°13° (likely 54°12° to 56°13°)	55°13°	0%	5 mph8 km/h from S, gusts 6 mph10 km/h	71%	79%	0
Mon 2a	Cloudy	54°12° (likely 52°11° to 55°13°)	54°12°	0%	5 mph8 km/h from SSE, gusts 5 mph8 km/h	74%	78%	0
Mon 3a	Partly cloudy	53°12° (likely 51°11° to 55°13°)	53°12°	0%	0 mph0 km/h, gusts 3 mph6 km/h	76%	74%	0
Mon 4a	Partly cloudy	52°11° (likely 50°10° to 54°12°)	52°11°	0%	0 mph0 km/h, gusts 3 mph5 km/h	79%	78%	0
Mon 5a	Cloudy	52°11° (likely 49°9° to 54°12°)	52°11°	0%	0 mph0 km/h, gusts 3 mph5 km/h	80%	86%	0
Mon 6a	Partly cloudy	51°11° (likely 48°9° to 51°11°)	51°11°	0%	0 mph0 km/h, gusts 7 mph11 km/h	82%	71%	0
Mon 7a	Cloudy	50°10° (likely 47°8° to 51°11°)	49°9°	0%	5 mph8 km/h from E, gusts 7 mph11 km/h	85%	72%	0
Mon 8a	Cloudy	51°11° (likely 48°9° to 52°11°)	51°11°	0%	0 mph0 km/h, gusts 7 mph12 km/h	86%	80%	0
Mon 9a	Cloudy	55°13° (likely 52°11° to 56°13°)	55°13°	0%	0 mph0 km/h, gusts 10 mph16 km/h	81%	79%	1
Mon 10a	Cloudy	60°16° (likely 58°14° to 60°16°)	60°16°	0%	5 mph8 km/h from ENE, gusts 10 mph15 km/h	71%	79%	2
Mon 11a	Cloudy	64°18° (likely 62°17° to 64°18°)	64°18°	0%	5 mph8 km/h from ENE, gusts 10 mph16 km/h	62%	83%	2
Mon 12p	Cloudy	67°19° (likely 65°18° to 67°19°)	67°19°	0%	5 mph8 km/h from ENE, gusts 9 mph15 km/h	57%	84%	3
Mon 1p	Cloudy	69°21° (likely 67°19° to 69°21°)	69°21°	0%	5 mph8 km/h from ENE, gusts 9 mph14 km/h	52%	88%	3
Mon 2p	Cloudy	71°22° (likely 68°20° to 72°22°)	71°22°	0%	5 mph8 km/h from E, gusts 8 mph13 km/h	49%	88%	3
Mon 3p	Cloudy	72°22° (likely 68°20° to 73°23°)	72°22°	0%	5 mph8 km/h from E, gusts 8 mph13 km/h	47%	92%	3
Mon 4p	Cloudy	72°22° (likely 67°19° to 73°23°)	72°22°	0%	5 mph8 km/h from ENE, gusts 9 mph15 km/h	47%	83%	2
Mon 5p	Mostly cloudy	69°21° (likely 65°18° to 73°23°)	69°21°	0%	5 mph8 km/h from ENE, gusts 11 mph18 km/h	51%	74%	1
Mon 6p	Mostly cloudy	65°18° (likely 61°16° to 69°21°)	65°18°	0%	10 mph16 km/h from ENE, gusts 16 mph26 km/h	58%	77%	0

Days ahead

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

Today, Oct 24. Cloudy. High 71°22°, low 49°9°. Typical 60°16° / 40°4°. Dry. Forecasts agree.
1. Evening
  6 PM–midnight
  Clear, 61°16°
  Dry
2. Overnight
  midnight–6 AM
  Cloudy, 50°10°
  Dry
Official NWS forecast
Tonight: Partly cloudy, with a low around 49. South southeast wind 0 to 5 mph.
Forecasts agreeIndependent forecasts are close; the range is narrow.
High, likely
71°22°–73°23°
Low, likely
46°8°–49°9°
Typical high / low
60°16° / 40°4°
Wind
9 mph14 km/h, gusts 17 mph27 km/h
UV peak
4
Tomorrow, Oct 25. Cloudy. High 77°25°, low 50°10°. Typical 60°16° / 40°4°. Dry. Forecasts agree.
1. Morning
  6 AM–noon
  Cloudy, 51°11°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 77°25°
  Dry
3. Evening
  6 PM–midnight
  Partly cloudy, 63°17°
  Dry
4. Overnight
  midnight–6 AM
  Partly cloudy, 52°11°
  Dry
Official NWS forecast
Day: Mostly sunny. High near 77, with temperatures falling to around 74 in the afternoon. South wind 0 to 5 mph.
Night: Partly cloudy. Low around 50, with temperatures rising to around 52 overnight. South southeast wind 0 to 5 mph.
Forecasts agreeIndependent forecasts are close; the range is narrow.
High, likely
72°22°–77°25°
Low, likely
48°9°–50°10°
Typical high / low
60°16° / 40°4°
Wind
7 mph12 km/h, gusts 15 mph24 km/h
UV peak
3
Monday, Oct 26. Cloudy. High 72°22°, low 47°8°. Typical 59°15° / 39°4°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Cloudy, 51°11°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 72°22°
  Dry
3. Evening
  6 PM–midnight
  Partly cloudy, 58°15°
  Dry
4. Overnight
  midnight–6 AM
  Cloudy, 51°11°
  Dry
Official NWS forecast
Day: Partly sunny, with a high near 72. East wind 0 to 5 mph.
Night: Partly cloudy, with a low around 47. East northeast wind 5 to 10 mph.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
68°20°–72°22°
Low, likely
47°8°–50°10°
Typical high / low
59°15° / 39°4°
Wind
13 mph21 km/h, gusts 22 mph35 km/h
UV peak
3
Tuesday, Oct 27. Mostly cloudy. High 73°23°, low 54°12°. Typical 59°15° / 39°4°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Cloudy, 52°11°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 72°22°
  Dry
3. Evening
  6 PM–midnight
  Cloudy, 62°17°
  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 73.
Night: Mostly cloudy, with a low around 54.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
69°21°–73°23°
Low, likely
49°9°–54°12°
Typical high / low
59°15° / 39°4°
Wind
10 mph16 km/h, gusts 19 mph31 km/h
UV peak
3
Wednesday, Oct 28. Partly sunny. High 76°24°, low 56°13°. Typical 58°14° / 38°3°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Cloudy, 57°14°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 74°23°
  Dry
3. Evening
  6 PM–midnight
  Clear, 65°18°
  Dry
4. Overnight
  midnight–6 AM
  Mostly clear, 60°16°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Mostly sunny, with a high near 76.
Night: Mostly clear, with a low around 56.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
72°22°–76°24°
Low, likely
54°12°–57°14°
Typical high / low
58°14° / 38°3°
Wind
13 mph21 km/h, gusts 26 mph42 km/h
UV peak
4
Thursday, Oct 29. Showers. High 76°24°, low 55°13°. Typical 58°14° / 38°3°. Rain 0.04 in1 mm, 20% chance. Mostly agree.
1. Morning
  6 AM–noon
  Cloudy, 61°16°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 73°23°
  Dry
3. Evening
  6 PM–midnight
  Cloudy, 64°18°
  Dry
4. Overnight
  midnight–6 AM
  Cloudy, 58°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 76.
Night: A slight chance of rain showers before 7pm. Partly cloudy, with a low around 55.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
71°22°–76°24°
Low, likely
55°13°–61°16°
Typical high / low
58°14° / 38°3°
Wind
12 mph19 km/h, gusts 34 mph54 km/h
UV peak
3
Friday, Oct 30. Partly sunny. High 76°24°, low 56°13°. Typical 57°14° / 38°3°. Dry. Forecasts differ.
1. Morning
  6 AM–noon
  Cloudy, 59°15°
  Dry
2. Afternoon
  noon–6 PM
  Mostly sunny, 73°23°
  Dry
3. Evening
  6 PM–midnight
  Cloudy, 65°19°
  Dry
4. Overnight
  midnight–6 AM
  Cloudy, 60°16°
  20% chance
Hours this far out come from computer models only.
Official NWS forecast
Day: Mostly sunny, with a high near 76.
Night: A slight chance of rain showers after 1am. Mostly cloudy, with a low around 56.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
High, likely
70°21°–77°25°
Low, likely
54°12°–59°15°
Typical high / low
57°14° / 38°3°
Wind
15 mph25 km/h, gusts 28 mph45 km/h
UV peak
3
Saturday, Oct 31. Showers. High 73°23°, low 60°16°. Typical 56°13° / 37°3°. Rain 0.13 in3.3 mm, 30% chance. Mostly agree.
1. Morning
  6 AM–noon
  Cloudy, 62°16°
  30% chance
2. Afternoon
  noon–6 PM
  Cloudy, 72°22°
  30% chance
3. Evening
  6 PM–midnight
  Showers, 66°19°
  50% chance · 0.11 in2.8 mm
4. Overnight
  midnight–6 AM
  Showers, 62°17°
  50% chance · 0.29 in7.4 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 73.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
70°21°–74°23°
Low, likely
57°14°–63°17°
Typical high / low
56°13° / 37°3°
Wind
15 mph24 km/h, gusts 28 mph46 km/h
UV peak
2
Sunday, Nov 1. Drizzle. High 69°21°, low 60°16°. Typical 56°13° / 37°3°. Rain 0.4 in10 mm, 50% chance. Mostly agree.
1. Morning
  6 AM–noon
  Drizzle, 63°17°
  40% chance · 0.04 in1.1 mm
2. Afternoon
  noon–6 PM
  Drizzle, 69°21°
  40% chance · 0.03 in0.7 mm
3. Evening
  6 PM–midnight
  Cloudy, 63°17°
  30% chance · 0.05 in1.3 mm
4. Overnight
  midnight–6 AM
  Cloudy, 54°12°
  30% chance · 0.02 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
68°20°–72°22°
Low, likely
58°14°–63°17°
Typical high / low
56°13° / 37°3°
Wind
19 mph31 km/h, gusts 41 mph65 km/h
UV peak
3
Monday, Nov 2. Cloudy. High 65°18°, low 53°12°. Typical 56°13° / 37°3°. Rain 0.46 in12 mm, 40% chance. Forecasts differ.
1. Morning
  6 AM–noon
  Mostly sunny, 55°13°
  40% chance · 0.12 in3.1 mm
2. Afternoon
  noon–6 PM
  Sunny, 62°17°
  40% chance · 0.23 in5.9 mm
3. Evening
  6 PM–midnight
  Clear, 56°13°
  30% chance · 0.06 in1.5 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
57°14°–70°21°
Low, likely
37°3°–61°16°
Typical high / low
56°13° / 37°3°
Wind
19 mph30 km/h, gusts 37 mph59 km/h
UV peak
3

10 days15 days30 days

The outlook

Today
Dry, high 71°, low 49°.
Tomorrow
Dry, high 77°, low 50°, warming up.
Monday
Dry, high 72°, low 47°, cooling off.
Rest of week
Highs 65–76°; 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

Illinois River at Marseilles Lock (tailwater)

4.0 mi

Below flood stage

Level: 459 ft
Flow: 5,280 cfs

Forecast peak 459 ft Sat 7 PM

Reading from Sat 5:30 PM · NWS gauge page

Illinois River at Starved Rock Lock (tailwater)

8.7 mi

Below flood stage

Level: 441 ft
Flow: 4,420 cfs

Forecast peak 442 ft Sat 7 PM

Reading from Sat 5 PM · NWS gauge page

Illinois River near La Salle

15 mi

Below flood stage

Level: 11.4 ft
Flow: 5,310 cfs

Forecast peak 11.5 ft Sat 7 PM

Reading from Sat 5:45 PM · NWS gauge page

Illinois River at Morris

21 mi

Below flood stage

Level: 5.1 ft
Flow: 4,710 cfs

Forecast peak 5.1 ft Sat 7 PM

Reading from Sat 5:45 PM · NWS gauge page

For your home

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

Heating this week

About 89% less heating than a typical week.

This week 13Typical 114

Heating degree days, base 65°F

Comfort

Dry air outside (dew point 46°F).

Open the windows?

Sun, 10:00 AM–9:00 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 24, today vs a typical year

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

Last 7 days vs normal

On average 3°2° warmer than normal (daily mean temperature).

−8°−4°SunOct 18
−2°−1°MonOct 19
+2°+1°TueOct 20
+5°+3°WedOct 21
+6°+3°ThuOct 22
+9°+5°FriOct 23
+10°+6°SatOct 24

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

Sun & moon

Sun

Daylight: 10 h 43 min; Losing 2 min 30 s a day; shortest Dec 21, 1 h 32 min less
Golden hour: 5:22–6:18 PM; Morning 7:00–7:55 AM
Blue hour: 6:18–6:29 PM; Morning 6:49–7:00 AM; first light 6:49 AM

Stars tonight? Poor

Clouds most of the night (about 53% cover).

Moon

Waxing gibbous

98% lit · growing

Today: sets 5:30 AM · rises 4:58 PM
Full moon: Oct 25
New moon: Nov 9

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

Ottawa, IL weather

Next 2 hours

Next 48 hours

Days ahead

The outlook

Today

Tomorrow

Monday

Rest of week

What changed since yesterday

Radar

Rivers

Illinois River at Marseilles Lock (tailwater)

Illinois River at Starved Rock Lock (tailwater)

Illinois River near La Salle

Illinois River at Morris

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? Poor

Moon