Observed 3:15 AM CDT at KDVN

Port Byron, IL weather

Clear and 57°14°, 16°9° warmer than a typical Oct 24.

Forecasts agree

Now 57°14°

Clear

Wind: 7 mph11 km/h; From the south-southeast. 58–10 mph16 km/h through 3 PM
Dew point: 45°7°; Comfortable
UV index: 0Low; Moderate 11 AM–4 PM · peak 4
Air quality: 47Good; PM2.5 (fine particles) · tomorrow moderate
Pressure: 30.28 inHg1025 hPa; Rising slowly · +0.02 inHg+0.7 hPa in 3 h

No precipitation expected in the next 2 hours.

From forecast models

Next 48 hours

Good hours for

Low 52°11° today at 6 AM
Above 60°16° today by 10 AM
High 74°23° today at 4 PM

TonightNear 55°13° · Partly cloudy
This morningUp to 65°18° by 11 AM · Mostly cloudy
This afternoonUp to 74°23° by 4 PM · Partly cloudy
TonightDown to 53°12° by 5 AM · Partly cloudy
Tomorrow morningUp to 66°19° by 11 AM · Mostly cloudy
Tomorrow afternoonUp to 76°24° by 4 PM · Mostly cloudy
Tomorrow nightDown to 56°13° by 2 AM · 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 3a	Clear	55°13° (likely 54°12° to 57°14°)	55°13°	0%	5 mph8 km/h from SE, gusts 12 mph19 km/h	69%	38%	0
Sat 4a	Clear	55°13° (likely 53°12° to 56°13°)	55°13°	0%	5 mph8 km/h from SE, gusts 11 mph18 km/h	69%	37%	0
Sat 5a	Clear	54°12° (likely 52°11° to 55°13°)	54°12°	0%	5 mph8 km/h from SE, gusts 11 mph18 km/h	69%	37%	0
Sat 6a	Clear	52°11° (likely 52°11° to 55°13°)	52°11°	0%	5 mph8 km/h from SE, gusts 11 mph17 km/h	74%	40%	0
Sat 7a	Mostly cloudy	52°11° (likely 51°11° to 55°13°)	52°11°	0%	5 mph8 km/h from SE, gusts 11 mph17 km/h	74%	70%	0
Sat 8a	Cloudy	53°12° (likely 51°11° to 55°13°)	53°12°	0%	5 mph8 km/h from S, gusts 11 mph18 km/h	71%	79%	0
Sat 9a	Cloudy	57°14° (likely 55°13° to 58°14°)	57°14°	0%	10 mph16 km/h from S, gusts 15 mph24 km/h	69%	78%	1
Sat 10a	Sunny	61°16° (likely 60°16° to 61°16°)	61°16°	0%	10 mph16 km/h from S, gusts 17 mph27 km/h	60%	45%	2
Sat 11a	Cloudy	65°18° (likely 64°18° to 65°18°)	65°18°	0%	10 mph16 km/h from S, gusts 17 mph27 km/h	52%	80%	3
Sat 12p	Sunny	68°20° (likely 67°19° to 68°20°)	68°20°	0%	10 mph16 km/h from S, gusts 16 mph26 km/h	49%	44%	3
Sat 1p	Sunny	71°22° (likely 70°21° to 71°22°)	71°22°	0%	10 mph16 km/h from S, gusts 14 mph23 km/h	42%	41%	3
Sat 2p	Sunny	72°22° (likely 71°22° to 72°22°)	72°22°	0%	10 mph16 km/h from S, gusts 15 mph23 km/h	41%	39%	4
Sat 3p	Cloudy	73°23° (likely 71°22° to 73°23°)	73°23°	0%	10 mph16 km/h from S, gusts 15 mph23 km/h	38%	72%	3
Sat 4p	Sunny	74°23° (likely 71°22° to 74°23°)	74°23°	0%	10 mph16 km/h from S, gusts 15 mph24 km/h	38%	43%	2
Sat 5p	Sunny	72°22° (likely 69°21° to 72°22°)	72°22°	0%	10 mph16 km/h from S, gusts 15 mph24 km/h	39%	41%	1
Sat 6p	Partly cloudy	69°21° (likely 65°18° to 69°21°)	69°21°	0%	10 mph16 km/h from S, gusts 11 mph18 km/h	45%	36%	0
Sat 7p	Partly cloudy	65°18° (likely 63°17° to 65°18°)	65°18°	0%	5 mph8 km/h from SE, gusts 12 mph19 km/h	52%	33%	0
Sat 8p	Partly cloudy	63°17° (likely 61°16° to 63°17°)	63°17°	0%	5 mph8 km/h from SE, gusts 12 mph19 km/h	56%	50%	0
Sat 9p	Partly cloudy	61°16° (likely 60°16° to 61°16°)	61°16°	0%	5 mph8 km/h from S, gusts 12 mph19 km/h	58%	30%	0
Sat 10p	Partly cloudy	60°16° (likely 59°15° to 60°16°)	60°16°	0%	5 mph8 km/h from S, gusts 12 mph19 km/h	60%	66%	0
Sat 11p	Partly cloudy	59°15° (likely 58°14° to 59°15°)	59°15°	0%	5 mph8 km/h from S, gusts 12 mph19 km/h	62%	71%	0
Sun 12a	Partly cloudy	58°14° (likely 57°14° to 58°14°)	58°14°	0%	5 mph8 km/h from S, gusts 11 mph18 km/h	62%	77%	0
Sun 1a	Partly cloudy	57°14° (likely 56°13° to 57°14°)	57°14°	0%	5 mph8 km/h from S, gusts 11 mph18 km/h	64%	70%	0
Sun 2a	Partly cloudy	56°13° (likely 56°13° to 56°13°)	56°13°	0%	5 mph8 km/h from S, gusts 10 mph17 km/h	66%	73%	0
Sun 3a	Cloudy	55°13° (likely 55°13° to 55°13°)	55°13°	0%	5 mph8 km/h from S, gusts 9 mph15 km/h	69%	77%	0
Sun 4a	Cloudy	54°12° (likely 54°12° to 55°13°)	54°12°	0%	5 mph8 km/h from S, gusts 9 mph14 km/h	71%	76%	0
Sun 5a	Mostly cloudy	53°12° (likely 53°12° to 54°12°)	53°12°	0%	5 mph8 km/h from S, gusts 8 mph13 km/h	74%	57%	0
Sun 6a	Cloudy	53°12° (likely 52°11° to 53°12°)	53°12°	0%	5 mph8 km/h from S, gusts 8 mph12 km/h	71%	78%	0
Sun 7a	Cloudy	52°11° (likely 52°11° to 53°12°)	52°11°	0%	5 mph8 km/h from S, gusts 6 mph9 km/h	74%	79%	0
Sun 8a	Cloudy	53°12° (likely 51°11° to 54°12°)	53°12°	0%	5 mph8 km/h from SE, gusts 4 mph6 km/h	74%	79%	0
Sun 9a	Cloudy	56°13° (likely 55°13° to 58°14°)	56°13°	0%	5 mph8 km/h from S, gusts 5 mph9 km/h	72%	79%	1
Sun 10a	Cloudy	62°17° (likely 60°16° to 62°17°)	62°17°	0%	5 mph8 km/h from S, gusts 9 mph14 km/h	60%	77%	1
Sun 11a	Partly sunny	66°19° (likely 65°18° to 66°19°)	66°19°	0%	5 mph8 km/h from S, gusts 9 mph15 km/h	54%	67%	2
Sun 12p	Partly sunny	69°21° (likely 68°20° to 69°21°)	69°21°	0%	5 mph8 km/h from S, gusts 8 mph12 km/h	51%	60%	3
Sun 1p	Cloudy	73°23° (likely 71°22° to 73°23°)	73°23°	0%	5 mph8 km/h from S, gusts 7 mph12 km/h	44%	58%	4
Sun 2p	Mostly cloudy	74°23° (likely 73°23° to 75°24°)	74°23°	0%	5 mph8 km/h from S, gusts 8 mph13 km/h	43%	58%	4
Sun 3p	Partly sunny	75°24° (likely 74°23° to 76°24°)	75°24°	0%	5 mph8 km/h from S, gusts 8 mph13 km/h	41%	66%	3
Sun 4p	Cloudy	76°24° (likely 73°23° to 77°25°)	76°24°	0%	5 mph8 km/h from S, gusts 8 mph13 km/h	40%	67%	2
Sun 5p	Cloudy	74°23° (likely 71°22° to 75°24°)	74°23°	0%	0 mph0 km/h, gusts 6 mph10 km/h	44%	80%	1
Sun 6p	Cloudy	71°22° (likely 66°19° to 71°22°)	71°22°	0%	0 mph0 km/h, gusts 3 mph5 km/h	49%	81%	0
Sun 7p	Cloudy	68°20° (likely 63°17° to 68°20°)	68°20°	0%	0 mph0 km/h, gusts 4 mph6 km/h	55%	87%	0
Sun 8p	Cloudy	63°17° (likely 61°16° to 64°18°)	63°17°	0%	0 mph0 km/h, gusts 5 mph8 km/h	62%	84%	0
Sun 9p	Cloudy	60°16° (likely 60°16° to 62°17°)	60°16°	0%	0 mph0 km/h, gusts 6 mph9 km/h	69%	92%	0
Sun 10p	Cloudy	59°15° (likely 59°15° to 61°16°)	59°15°	0%	0 mph0 km/h, gusts 5 mph9 km/h	72%	94%	0
Sun 11p	Cloudy	58°14° (likely 58°14° to 60°16°)	58°14°	0%	0 mph0 km/h, gusts 3 mph4 km/h	75%	93%	0
Mon 12a	Cloudy	58°14° (likely 57°14° to 59°15°)	58°14°	0%	0 mph0 km/h, gusts 7 mph11 km/h	72%	88%	0
Mon 1a	Cloudy	57°14° (likely 55°13° to 58°14°)	57°14°	0%	0 mph0 km/h, gusts 7 mph11 km/h	75%	89%	0
Mon 2a	Cloudy	56°13° (likely 52°11° to 58°14°)	56°13°	0%	0 mph0 km/h, gusts 3 mph5 km/h	77%	78%	0

Days ahead

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

Today, Oct 24. Cloudy. High 75°24°, low 52°11°. Typical 59°15° / 40°4°. Dry. Forecasts agree.
1. Morning
  6 AM–noon
  Cloudy, 53°12°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 74°23°
  Dry
3. Evening
  6 PM–midnight
  Partly cloudy, 63°17°
  Dry
4. Overnight
  midnight–6 AM
  Cloudy, 53°12°
  Dry
Official NWS forecast
Today: Partly sunny. High near 75, with temperatures falling to around 72 in the afternoon. South wind 5 to 10 mph.
Tonight: Mostly cloudy. Low around 52, with temperatures rising to around 54 overnight. Southeast wind around 5 mph.
Forecasts agreeIndependent forecasts are close; the range is narrow.
High, likely
71°22°–75°24°
Low, likely
51°11°–55°13°
Typical high / low
59°15° / 40°4°
Wind
11 mph17 km/h, gusts 22 mph35 km/h
UV peak
4
Tomorrow, Oct 25. Cloudy. High 76°24°, low 52°11°. Typical 59°15° / 40°4°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Cloudy, 53°12°
  Dry
2. Afternoon
  noon–6 PM
  Partly sunny, 76°24°
  Dry
3. Evening
  6 PM–midnight
  Cloudy, 63°17°
  Dry
4. Overnight
  midnight–6 AM
  Cloudy, 54°12°
  Dry
Official NWS forecast
Day: Mostly sunny, with a high near 76. South wind 0 to 5 mph.
Night: Mostly cloudy, with a low around 52.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
74°23°–77°25°
Low, likely
51°11°–53°12°
Typical high / low
59°15° / 40°4°
Wind
7 mph11 km/h, gusts 16 mph26 km/h
UV peak
4
Monday, Oct 26. Cloudy. High 71°22°, low 48°9°. Typical 58°14° / 39°4°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Cloudy, 53°12°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 71°21°
  Dry
3. Evening
  6 PM–midnight
  Cloudy, 61°16°
  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 71.
Night: Mostly cloudy, with a low around 48.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
69°21°–73°23°
Low, likely
48°9°–54°12°
Typical high / low
58°14° / 39°4°
Wind
12 mph19 km/h, gusts 24 mph38 km/h
UV peak
3
Tuesday, Oct 27. Mostly cloudy. High 71°22°, low 54°12°. Typical 58°14° / 39°4°. Dry. Mostly agree. Best day outdoors this week.
1. Morning
  6 AM–noon
  Cloudy, 52°11°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 70°21°
  Dry
3. Evening
  6 PM–midnight
  Cloudy, 63°17°
  Dry
4. Overnight
  midnight–6 AM
  Cloudy, 58°14°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Mostly cloudy, with a high near 71.
Night: Mostly cloudy, with a low around 54.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
Best day outdoors this week: the one dry, mild day the forecasts agree on (high 71°22°).
High, likely
68°20°–72°22°
Low, likely
49°9°–54°12°
Typical high / low
58°14° / 39°4°
Wind
11 mph18 km/h, gusts 24 mph39 km/h
UV peak
3
Wednesday, Oct 28. Showers. High 74°23°, low 52°11°. Typical 57°14° / 38°3°. Rain 0.05 in1.3 mm, 20% chance. Forecasts agree.
1. Morning
  6 AM–noon
  Sunny, 58°14°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 73°23°
  Dry
3. Evening
  6 PM–midnight
  Mostly clear, 64°18°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 60°16°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: A slight chance of rain showers between 7am and 1pm. Mostly sunny, with a high near 74.
Night: Partly cloudy, with a low around 52.
Forecasts agreeIndependent forecasts are close; the range is narrow.
High, likely
72°22°–74°23°
Low, likely
52°11°–59°15°
Typical high / low
57°14° / 38°3°
Wind
14 mph23 km/h, gusts 30 mph49 km/h
UV peak
4
Thursday, Oct 29. Partly sunny. High 70°21°, low 49°9°. Typical 57°14° / 38°3°. Dry. Forecasts differ.
1. Morning
  6 AM–noon
  Partly sunny, 61°16°
  Dry
2. Afternoon
  noon–6 PM
  Mostly sunny, 72°22°
  Dry
3. Evening
  6 PM–midnight
  Clear, 61°16°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 55°13°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Mostly sunny, with a high near 70.
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
70°21°–76°24°
Low, likely
49°9°–61°16°
Typical high / low
57°14° / 38°3°
Wind
16 mph26 km/h, gusts 34 mph55 km/h
UV peak
3
Friday, Oct 30. Showers. High 69°21°, low 55°13°. Typical 56°13° / 38°3°. Rain 0.04 in1 mm, 30% chance. Forecasts differ.
1. Morning
  6 AM–noon
  Cloudy, 57°14°
  Dry
2. Afternoon
  noon–6 PM
  Drizzle, 71°22°
  20% chance
3. Evening
  6 PM–midnight
  Drizzle, 65°18°
  Dry
4. Overnight
  midnight–6 AM
  Cloudy, 60°16°
  30% chance
Hours this far out come from computer models only.
Official NWS forecast
Day: A chance of rain showers. Partly sunny, with a high near 69. Chance of precipitation is 30%.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
High, likely
66°19°–78°26°
Low, likely
46°8°–62°17°
Typical high / low
56°13° / 38°3°
Wind
13 mph21 km/h, gusts 23 mph37 km/h
Saturday, Oct 31. Rain. High 70°21°, low 60°16°. Typical 56°13° / 37°3°. Rain 0.25 in6.4 mm, 40% chance. Forecasts differ.
1. Morning
  6 AM–noon
  Drizzle, 63°17°
  40% chance
2. Afternoon
  noon–6 PM
  Rain, 70°21°
  40% chance · 0.06 in1.6 mm
3. Evening
  6 PM–midnight
  Rain, 65°18°
  40% chance · 0.14 in3.6 mm
4. Overnight
  midnight–6 AM
  Drizzle, 62°17°
  50% chance · 0.07 in1.8 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
62°17°–78°26°
Low, likely
57°14°–64°18°
Typical high / low
56°13° / 37°3°
Wind
15 mph24 km/h, gusts 33 mph53 km/h
Sunday, Nov 1. Drizzle. High 66°19°, low 58°14°. Typical 55°13° / 37°3°. Rain 0.59 in15 mm, 50% chance. Forecasts agree.
1. Morning
  6 AM–noon
  Cloudy, 62°17°
  50% chance · 0.2 in5.1 mm
2. Afternoon
  noon–6 PM
  Cloudy, 66°19°
  40% chance · 0.24 in6.2 mm
3. Evening
  6 PM–midnight
  Drizzle, 61°16°
  30% chance · 0.08 in2 mm
4. Overnight
  midnight–6 AM
  Drizzle, 51°11°
  30% chance · 0.01 in0.3 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 agreeIndependent forecasts are close; the range is narrow.
High, likely
66°19°–67°19°
Low, likely
56°13°–61°16°
Typical high / low
55°13° / 37°3°
Wind
22 mph35 km/h, gusts 41 mph67 km/h
UV peak
2
Monday, Nov 2. Drizzle. High 61°16°, low 49°9°. Typical 54°12° / 36°2°. Rain 0.15 in3.8 mm, 30% chance. Mostly agree.
1. Morning
  6 AM–noon
  Cloudy, 51°11°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 54°12°
  Dry
3. Evening
  6 PM–midnight
  Cloudy, 51°11°
  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
57°14°–63°17°
Low, likely
43°6°–54°12°
Typical high / low
54°12° / 36°2°
Wind
23 mph36 km/h, gusts 44 mph71 km/h
UV peak
2

10 days15 days30 days

The outlook

Today
Dry, high 75°, low 52°.
Tomorrow
Dry, high 76°, low 52°.
Monday
Dry, high 71°, low 48°, cooling off.
Rest of week
Highs 61–74°; chance of precipitation on Saturday, Sunday.

Want the meteorologists’ reasoning? Read the NWS forecast discussion (DVN) (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

Mississippi River at LeClaire

5.1 mi

Below flood stage

Level: 4.5 ft
Flow: 27,000 cfs

Forecast peak 4.6 ft Sat 7 AM

Reading from Sat 2 AM · NWS gauge page

Rock River near Joslin

8.8 mi

Below flood stage

Level: 6.7 ft
Flow: 6,270 cfs

Forecast peak 6.8 ft Sat 1 PM

Reading from Sat 1:45 AM · NWS gauge page

Mississippi River at Camanche

12 mi

Below flood stage

Level: 9.3 ft
Flow: 49,900 cfs

Forecast peak 9.4 ft Sat 7 AM

Reading from Sat 1:30 AM · NWS gauge page

Mississippi River at Rock Island

14 mi

Below flood stage

Level: 5.4 ft
Flow: 42,100 cfs

Forecast peak 5.6 ft Sat 7 AM

Reading from Sat 2 AM · NWS gauge page

For your home

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

Heating this week

About 92% less heating than a typical week.

This week 10Typical 117

Heating degree days, base 65°F

Comfort

Dry air outside (dew point 45°F).

Open the windows?

Today, 10:00 AM–10:00 PM

Good stretch to open the windows.

Is this typical?

CLINTON NO 1 · official normals 1991–2020 · records 1893–2026

Oct 24, today vs a typical year

Today’s expected high is 16°9° warmer than typical.

Last 7 days vs normal

—SunOct 18
—MonOct 19
—TueOct 20
—WedOct 21
—ThuOct 22
—FriOct 23
—SatOct 24

Port Byron weather by month: normals, records, snow and freeze dates

Sun & moon

Sun

Daylight: 10 h 43 min; Losing 2 min 35 s a day; shortest Dec 21, 1 h 33 min less
Golden hour: 5:27–6:23 PM; Morning 7:06–8:02 AM
Blue hour: 6:23–6:34 PM; Morning 6:55–7:06 AM; first light 6:55 AM

Stars tonight? Poor

Clouds most of the night (about 38% cover).

Moon

Waxing gibbous

96% lit · growing

Today: sets 5:37 AM · rises 5:04 PM
Full moon: Oct 25
New moon: Nov 9

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

Port Byron, IL weather

Next 2 hours

Next 48 hours

Days ahead

The outlook

Today

Tomorrow

Monday

Rest of week

What changed since yesterday

Radar

Rivers

Mississippi River at LeClaire

Rock River near Joslin

Mississippi River at Camanche

Mississippi River at Rock Island

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