Observed 3:30 PM CDT at KRFD

Byron, IL weather

Sunny and 70°21°, 15°8° warmer than a typical Oct 24.

Mostly agree

Now 70°21°

Sunny

Wind: 9 mph15 km/h; From the south. Up to 10 mph16 km/h through 3 AM
Dew point: 46°8°; Comfortable
UV tomorrow: 4Moderate; Moderate 12–4 PM · peak 4
Air quality: 67Moderate; Main pollutant: Ozone
Pressure: 30.35 inHg1028 hPa; Falling slowly · −0.04 inHg−1.4 hPa in 3 h

No precipitation expected in the next 2 hours.

From forecast models

Next 48 hours

About the same as this time yesterday (72°22° then, 72°22° now)

Good hours for

Below 60°16° tonight after 8 PM
Low 48°9° tomorrow at 7 AM
Above 60°16° tomorrow by 10 AM

This afternoonNear 72°22° · Partly cloudy
TonightDown to 50°10° by 4 AM · Partly cloudy
Tomorrow morningUp to 66°19° by 11 AM · Mostly cloudy
Tomorrow afternoonUp to 75°24° by 3 PM · Mostly cloudy
Tomorrow nightDown to 51°11° by 4 AM · Mostly cloudy
Monday morningUp to 61°16° by 11 AM · Mostly cloudy
Monday afternoonNear 66°19° · 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 3p	Sunny	72°22° (likely 69°21° to 73°23°)	73°23°	0%	10 mph16 km/h from S, gusts 13 mph20 km/h	38%	31%	2
Sat 4p	Sunny	72°22° (likely 68°20° to 73°23°)	72°22°	0%	10 mph16 km/h from SSE, gusts 13 mph21 km/h	38%	22%	1
Sat 5p	Sunny	71°22° (likely 66°19° to 71°22°)	71°22°	0%	10 mph16 km/h from SSE, gusts 14 mph23 km/h	39%	29%	0
Sat 6p	Cloudy	67°19° (likely 62°17° to 67°19°)	67°19°	0%	5 mph8 km/h from SSE, gusts 12 mph19 km/h	45%	63%	0
Sat 7p	Partly cloudy	62°17° (likely 59°15° to 62°17°)	62°17°	0%	5 mph8 km/h from SSE, gusts 11 mph18 km/h	55%	48%	0
Sat 8p	Partly cloudy	59°15° (likely 57°14° to 60°16°)	59°15°	0%	5 mph8 km/h from SSE, gusts 11 mph18 km/h	61%	21%	0
Sat 9p	Partly cloudy	57°14° (likely 56°13° to 58°14°)	57°14°	0%	5 mph8 km/h from SSE, gusts 11 mph17 km/h	66%	30%	0
Sat 10p	Partly cloudy	56°13° (likely 55°13° to 57°14°)	56°13°	0%	5 mph8 km/h from S, gusts 10 mph16 km/h	68%	57%	0
Sat 11p	Partly cloudy	55°13° (likely 54°12° to 57°14°)	55°13°	0%	5 mph8 km/h from S, gusts 10 mph16 km/h	69%	28%	0
Sun 12a	Cloudy	54°12° (likely 53°12° to 56°13°)	54°12°	0%	5 mph8 km/h from S, gusts 9 mph15 km/h	71%	66%	0
Sun 1a	Partly cloudy	52°11° (likely 52°11° to 56°13°)	52°11°	0%	0 mph0 km/h, gusts 8 mph14 km/h	74%	66%	0
Sun 2a	Partly cloudy	52°11° (likely 52°11° to 54°12°)	52°11°	0%	0 mph0 km/h, gusts 9 mph14 km/h	74%	77%	0
Sun 3a	Partly cloudy	51°11° (likely 51°11° to 53°12°)	51°11°	0%	0 mph0 km/h, gusts 9 mph15 km/h	77%	85%	0
Sun 4a	Cloudy	50°10° (likely 50°10° to 53°12°)	50°10°	0%	0 mph0 km/h, gusts 9 mph14 km/h	79%	80%	0
Sun 5a	Cloudy	50°10° (likely 50°10° to 52°11°)	50°10°	0%	0 mph0 km/h, gusts 9 mph15 km/h	80%	81%	0
Sun 6a	Cloudy	49°9° (likely 49°9° to 52°11°)	49°9°	0%	0 mph0 km/h, gusts 8 mph13 km/h	81%	79%	0
Sun 7a	Cloudy	48°9° (likely 48°9° to 52°11°)	49°9°	0%	0 mph0 km/h, gusts 8 mph13 km/h	82%	79%	0
Sun 8a	Cloudy	50°10° (likely 50°10° to 53°12°)	49°9°	0%	5 mph8 km/h from S, gusts 8 mph13 km/h	82%	87%	0
Sun 9a	Cloudy	55°13° (likely 55°13° to 56°13°)	55°13°	0%	5 mph8 km/h from S, gusts 6 mph9 km/h	71%	80%	1
Sun 10a	Cloudy	61°16° (likely 60°16° to 61°16°)	61°16°	0%	5 mph8 km/h from SSW, gusts 11 mph17 km/h	60%	80%	2
Sun 11a	Cloudy	66°19° (likely 64°18° to 66°19°)	66°19°	0%	5 mph8 km/h from SSW, gusts 12 mph20 km/h	51%	79%	2
Sun 12p	Cloudy	70°21° (likely 67°19° to 70°21°)	70°21°	0%	5 mph8 km/h from SSW, gusts 12 mph19 km/h	45%	78%	3
Sun 1p	Partly sunny	72°22° (likely 70°21° to 72°22°)	73°23°	0%	5 mph8 km/h from SSW, gusts 10 mph17 km/h	42%	74%	4
Sun 2p	Partly sunny	74°23° (likely 71°22° to 74°23°)	74°23°	0%	5 mph8 km/h from S, gusts 11 mph17 km/h	41%	73%	3
Sun 3p	Sunny	75°24° (likely 72°22° to 75°24°)	75°24°	0%	5 mph8 km/h from S, gusts 10 mph16 km/h	39%	47%	3
Sun 4p	Partly sunny	75°24° (likely 71°22° to 75°24°)	75°24°	0%	5 mph8 km/h from S, gusts 10 mph16 km/h	39%	50%	2
Sun 5p	Cloudy	73°23° (likely 69°21° to 73°23°)	73°23°	0%	5 mph8 km/h from S, gusts 8 mph13 km/h	43%	78%	1
Sun 6p	Cloudy	69°21° (likely 64°18° to 69°21°)	69°21°	0%	5 mph8 km/h from S, gusts 6 mph10 km/h	50%	75%	0
Sun 7p	Cloudy	64°18° (likely 61°16° to 65°18°)	64°18°	0%	5 mph8 km/h from S, gusts 5 mph8 km/h	60%	78%	0
Sun 8p	Cloudy	60°16° (likely 59°15° to 62°17°)	60°16°	0%	5 mph8 km/h from S, gusts 7 mph11 km/h	66%	78%	0
Sun 9p	Cloudy	58°14° (likely 57°14° to 59°15°)	58°14°	0%	5 mph8 km/h from S, gusts 7 mph12 km/h	70%	81%	0
Sun 10p	Cloudy	57°14° (likely 56°13° to 58°14°)	57°14°	0%	5 mph8 km/h from S, gusts 7 mph11 km/h	73%	80%	0
Sun 11p	Cloudy	56°13° (likely 55°13° to 58°14°)	56°13°	0%	5 mph8 km/h from S, gusts 6 mph10 km/h	74%	74%	0
Mon 12a	Partly cloudy	55°13° (likely 54°12° to 57°14°)	55°13°	0%	5 mph8 km/h from S, gusts 5 mph8 km/h	77%	71%	0
Mon 1a	Cloudy	54°12° (likely 53°12° to 56°13°)	54°12°	0%	5 mph8 km/h from SW, gusts 5 mph8 km/h	80%	68%	0
Mon 2a	Partly cloudy	53°12° (likely 52°11° to 54°12°)	53°12°	0%	5 mph8 km/h from E, gusts 7 mph11 km/h	81%	80%	0
Mon 3a	Cloudy	52°11° (likely 51°11° to 53°12°)	52°11°	0%	5 mph8 km/h from ENE, gusts 8 mph14 km/h	86%	85%	0
Mon 4a	Cloudy	51°11° (likely 50°10° to 53°12°)	50°10°	0%	5 mph8 km/h from NE, gusts 10 mph16 km/h	91%	85%	0
Mon 5a	Cloudy	51°11° (likely 50°10° to 53°12°)	49°9°	0%	5 mph8 km/h from NE, gusts 13 mph21 km/h	92%	79%	0
Mon 6a	Cloudy	50°10° (likely 49°9° to 53°12°)	48°9°	0%	5 mph8 km/h from NE, gusts 14 mph23 km/h	93%	77%	0
Mon 7a	Cloudy	50°10° (likely 49°9° to 53°12°)	47°8°	0%	5 mph8 km/h from NE, gusts 17 mph27 km/h	96%	81%	0
Mon 8a	Cloudy	50°10° (likely 50°10° to 53°12°)	48°9°	0%	5 mph8 km/h from NE, gusts 16 mph26 km/h	93%	86%	0
Mon 9a	Cloudy	53°12° (likely 53°12° to 55°13°)	53°12°	0%	5 mph8 km/h from ENE, gusts 18 mph29 km/h	84%	89%	0
Mon 10a	Cloudy	58°14° (likely 56°13° to 58°14°)	58°14°	0%	10 mph16 km/h from ENE, gusts 16 mph26 km/h	74%	90%	1
Mon 11a	Cloudy	61°16° (likely 59°15° to 62°17°)	61°16°	0%	10 mph16 km/h from ENE, gusts 14 mph23 km/h	66%	87%	2
Mon 12p	Cloudy	64°18° (likely 61°16° to 65°18°)	64°18°	0%	10 mph16 km/h from ENE, gusts 13 mph21 km/h	62%	83%	3
Mon 1p	Cloudy	66°19° (likely 63°17° to 68°20°)	66°19°	0%	10 mph16 km/h from E, gusts 13 mph20 km/h	60%	82%	3
Mon 2p	Cloudy	67°19° (likely 63°17° to 71°22°)	67°19°	0%	10 mph16 km/h from E, gusts 12 mph19 km/h	56%	86%	2

Days ahead

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

Today, Oct 24. Cloudy. High 73°23°, low 48°9°. Typical 58°14° / 39°4°. Dry. Mostly agree.
1. Afternoon
  noon–6 PM
  Sunny, 72°22°
  Dry
2. Evening
  6 PM–midnight
  Partly cloudy, 59°15°
  Dry
3. Overnight
  midnight–6 AM
  Partly cloudy, 50°10°
  Dry
Official NWS forecast
Today: Mostly sunny. High near 73, with temperatures falling to around 71 in the afternoon. South southeast wind around 10 mph.
Tonight: Partly cloudy. Low around 48, with temperatures rising to around 50 overnight. South southeast wind 0 to 5 mph.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
69°21°–73°23°
Low, likely
48°9°–49°9°
Typical high / low
58°14° / 39°4°
Wind
10 mph16 km/h, gusts 17 mph27 km/h
UV peak
4
Tomorrow, Oct 25. Cloudy. High 75°24°, low 50°10°. Typical 58°14° / 39°4°. Dry. Forecasts agree.
1. Morning
  6 AM–noon
  Cloudy, 50°10°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 75°24°
  Dry
3. Evening
  6 PM–midnight
  Cloudy, 60°16°
  Dry
4. Overnight
  midnight–6 AM
  Cloudy, 51°11°
  Dry
Official NWS forecast
Day: Mostly sunny. High near 75, with temperatures falling to around 73 in the afternoon. South wind 0 to 5 mph.
Night: Partly cloudy, with a low around 50. South southeast wind around 5 mph.
Forecasts agreeIndependent forecasts are close; the range is narrow.
High, likely
72°22°–75°24°
Low, likely
50°10°–51°11°
Typical high / low
58°14° / 39°4°
Wind
8 mph12 km/h, gusts 14 mph22 km/h
UV peak
4
Monday, Oct 26. Cloudy. High 68°20°, low 45°7°. Typical 58°14° / 38°3°. Dry. Forecasts differ.
1. Morning
  6 AM–noon
  Cloudy, 50°10°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 67°19°
  Dry
3. Evening
  6 PM–midnight
  Cloudy, 55°13°
  Dry
4. Overnight
  midnight–6 AM
  Cloudy, 50°10°
  Dry
Official NWS forecast
Day: Partly sunny, with a high near 68. East northeast wind 5 to 10 mph.
Night: Mostly cloudy, with a low around 45.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
High, likely
64°18°–70°21°
Low, likely
45°7°–51°11°
Typical high / low
58°14° / 38°3°
Wind
14 mph22 km/h, gusts 23 mph36 km/h
UV peak
3
Tuesday, Oct 27. Cloudy. High 71°22°, low 53°12°. Typical 57°14° / 38°3°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Cloudy, 51°10°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 68°20°
  Dry
3. Evening
  6 PM–midnight
  Cloudy, 61°16°
  Dry
4. Overnight
  midnight–6 AM
  Cloudy, 57°14°
  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 53.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
66°19°–71°22°
Low, likely
48°9°–53°12°
Typical high / low
57°14° / 38°3°
Wind
11 mph18 km/h, gusts 23 mph37 km/h
UV peak
3
Wednesday, Oct 28. Partly sunny. High 75°24°, low 53°12°. Typical 56°13° / 38°3°. Dry. Mostly agree. Best day outdoors this week.
1. Morning
  6 AM–noon
  Cloudy, 57°14°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 72°22°
  Dry
3. Evening
  6 PM–midnight
  Clear, 63°17°
  Dry
4. Overnight
  midnight–6 AM
  Cloudy, 59°15°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Mostly sunny, with a high near 75.
Night: A slight chance of rain showers after 1am. Partly cloudy, with a low around 53.
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 75°24°).
High, likely
71°22°–75°24°
Low, likely
53°12°–58°14°
Typical high / low
56°13° / 38°3°
Wind
14 mph23 km/h, gusts 29 mph47 km/h
UV peak
3
Thursday, Oct 29. Showers. High 75°24°, low 53°12°. Typical 56°13° / 37°3°. Rain 0.08 in2 mm, 20% chance. Forecasts differ.
1. Morning
  6 AM–noon
  Drizzle, 59°15°
  Dry
2. Afternoon
  noon–6 PM
  Drizzle, 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: A slight chance of rain showers. Mostly sunny, with a high near 75.
Night: A slight chance of rain showers. Partly cloudy, with a low around 53.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
High, likely
68°20°–75°24°
Low, likely
53°12°–59°15°
Typical high / low
56°13° / 37°3°
Wind
14 mph22 km/h, gusts 32 mph51 km/h
UV peak
2
Friday, Oct 30. Showers. High 74°23°, low 54°12°. Typical 56°13° / 37°3°. Rain 0.07 in1.8 mm, 20% chance. Forecasts differ.
1. Morning
  6 AM–noon
  Drizzle, 60°15°
  Dry
2. Afternoon
  noon–6 PM
  Drizzle, 72°22°
  Dry
3. Evening
  6 PM–midnight
  Cloudy, 65°19°
  20% chance · 0.01 in0.4 mm
4. Overnight
  midnight–6 AM
  Cloudy, 61°16°
  30% chance
Hours this far out come from computer models only.
Official NWS forecast
Day: A slight chance of rain showers before 1pm. Partly sunny, with a high near 74.
Night: A slight chance of rain showers after 1am. Mostly cloudy, with a low around 54.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
High, likely
69°21°–75°24°
Low, likely
54°12°–59°15°
Typical high / low
56°13° / 37°3°
Wind
17 mph28 km/h, gusts 30 mph47 km/h
UV peak
3
Saturday, Oct 31. Rain. High 70°21°, low 58°14°. Typical 55°13° / 36°2°. Rain 0.14 in3.6 mm, 50% chance. Mostly agree.
1. Morning
  6 AM–noon
  Cloudy, 61°16°
  30% chance
2. Afternoon
  noon–6 PM
  Cloudy, 71°21°
  40% chance
3. Evening
  6 PM–midnight
  Rain, 63°17°
  50% chance · 0.1 in2.7 mm
4. Overnight
  midnight–6 AM
  Rain, 61°16°
  50% chance · 0.14 in3.6 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
55°13°–60°16°
Typical high / low
55°13° / 36°2°
Wind
20 mph31 km/h, gusts 39 mph62 km/h
UV peak
2
Sunday, Nov 1. Rain. High 64°18°, low 57°14°. Typical 54°12° / 36°2°. Rain 0.55 in14 mm, 50% chance. Forecasts agree.
1. Morning
  6 AM–noon
  Drizzle, 62°16°
  40% chance · 0.22 in5.5 mm
2. Afternoon
  noon–6 PM
  Drizzle, 64°18°
  40% chance · 0.14 in3.6 mm
3. Evening
  6 PM–midnight
  Drizzle, 61°16°
  40% chance · 0.12 in3 mm
4. Overnight
  midnight–6 AM
  Drizzle, 48°9°
  40% chance · 0.02 in0.5 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 agreeIndependent forecasts are close; the range is narrow.
High, likely
63°17°–66°19°
Low, likely
52°11°–61°16°
Typical high / low
54°12° / 36°2°
Wind
21 mph34 km/h, gusts 37 mph59 km/h
UV peak
1
Monday, Nov 2. Drizzle. High 58°14°, low 49°9°. Typical 54°12° / 36°2°. Rain 0.34 in8.6 mm, 40% chance. Forecasts differ.
1. Morning
  6 AM–noon
  Drizzle, 48°9°
  30% chance · 0.02 in0.6 mm
2. Afternoon
  noon–6 PM
  Drizzle, 55°13°
  30% chance · 0.13 in3.4 mm
3. Evening
  6 PM–midnight
  Drizzle, 52°11°
  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
50°10°–66°19°
Low, likely
37°3°–62°17°
Typical high / low
54°12° / 36°2°
Wind
20 mph32 km/h, gusts 39 mph63 km/h

10 days15 days30 days

The outlook

Today
Dry, high 73°, low 48°.
Tomorrow
Dry, high 75°, low 50°.
Monday
Dry, high 68°, low 45°, cooling off.
Rest of week
Highs 58–75°; chance of precipitation on Saturday, 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

Rock River at Byron

0.6 mi

Below flood stage

Level: 6.6 ft
Flow: 5,210 cfs

Reading from Sat 2:15 PM · NWS gauge page

Rock River at Rockford (Fordam Dam)

13 mi

Below flood stage

Level: 2.2 ft

Reading from Sat 2 PM · NWS gauge page

Kishwaukee River near Perryville

15 mi

Below flood stage

Level: 6.1 ft
Flow: 625 cfs

Reading from Sat 1:30 PM · NWS gauge page

Rock River at Rockford (Auburn Street)

16 mi

Below flood stage

Level: 3.0 ft
Flow: 5,440 cfs

Reading from Sat 1:45 PM · NWS gauge page

For your home

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

Heating this week

About 88% less heating than a typical week.

This week 15Typical 123

Heating degree days, base 65°F

Comfort

Dry air outside (dew point 46°F).

Open the windows?

Today, 4:00 PM–7:00 PM

Good stretch to open the windows.

Is this typical?

Rockford Greater Rockford Airport · official normals 1991–2020 · records 1893–2026

Oct 24, today vs a typical year

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

Last 7 days vs normal

On average 4°2° warmer than normal (daily mean temperature).

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

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

Sun & moon

Sun

Daylight: 10 h 41 min; Losing 2 min 35 s a day; shortest Dec 21, 1 h 35 min less
Golden hour: 5:22–6:19 PM; Morning 7:02–7:59 AM
Blue hour: 6:19–6:30 PM; Morning 6:51–7:02 AM; first light 6:51 AM

Stars tonight? Poor

Clouds most of the night (about 60% cover).

Moon

Waxing gibbous

98% lit · growing

Today: sets 5:33 AM · rises 4:59 PM
Full moon: Oct 25
New moon: Nov 9

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

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

Rock River at Byron

Rock River at Rockford (Fordam Dam)

Kishwaukee River near Perryville

Rock River at Rockford (Auburn Street)

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