Dense Fog Advisory
Ends in 2 h 51 min
When
Until 9 AM CDT this morning.
Where
Portions of east central, north central, and northeast Wisconsin.
Issued for this forecast zone · National Weather Service Green Bay WI
What, impacts and precautionsHide details
What
Visibility one quarter mile or less in dense fog. The most widespread dense fog will be overnight into early Friday morning.
Impacts
Low visibility could make driving conditions hazardous.
Precautionary actions
If driving, slow down, use your headlights, and leave plenty of distance ahead of you.
Areas: Forest; Florence; Northern Marinette County; Langlade; Menominee; Northern Oconto County; Door; Shawano; Waupaca; Outagamie; Brown; Kewaunee; Winnebago; Calumet; Manitowoc; Southern Marinette County; Southern Oconto County
See it on weather.gov (opens in a new tab)

Observed 5:25 AM CDT at KGRB

Green Bay, WI weather

Foggy and 48°9°, 13°7° warmer than a typical Oct 23.

Mostly agree

Now 48°9°

Fog

Wind: 5 mph7 km/h; From the east. Up to 7 mph11 km/h through 6 PM
Visibility: 1 mi1.6 km; Fog · under 3 mi5 km
Dew point: 48°9°; Comfortable
Humidity: 100%; Air 48°9°, dew point 48°9° · fog or dew likely
UV index: 0Low; Moderate 12–2 PM · peak 3
Pressure: 30.3 inHg1026 hPa; Steady over the last 3 h

No precipitation expected in the next 2 hours.

From forecast models

Next 48 hours

6°3° warmer than this time yesterday (43°6° then, 49°9° now)

Good hours for

Fog until 9 AM
Above 60°16° today by 11 AM
High 68°20° today at 4 PM
Below 60°16° tonight after 8 PM

This morningUp to 60°16° by 11 AM · Mostly cloudy
This afternoonUp to 68°20° by 4 PM · Partly cloudy
TonightDown to 53°12° by 4 AM · Mostly cloudy
Tomorrow morningUp to 62°17° by 11 AM · Mostly cloudy
Tomorrow afternoonNear 66°19° · Mostly cloudy
Tomorrow nightDown to 57°14° by 4 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 6a	Fog	49°9° (likely 48°9° to 52°11°)	49°9°	0%	2 mph3 km/h from SSE, gusts 5 mph8 km/h	95%	89%	0
Fri 7a	Fog	50°10° (likely 48°9° to 53°12°)	50°10°	0%	2 mph3 km/h from SSE, gusts 6 mph9 km/h	97%	92%	0
Fri 8a	Fog	51°11° (likely 49°9° to 54°12°)	50°10°	0%	3 mph5 km/h from S, gusts 5 mph9 km/h	100%	96%	0
Fri 9a	Mostly cloudy	54°12° (likely 51°11° to 56°13°)	54°12°	0%	3 mph5 km/h from S, gusts 7 mph11 km/h	93%	95%	0
Fri 10a	Cloudy	57°14° (likely 55°13° to 59°15°)	57°14°	0%	5 mph8 km/h from S, gusts 8 mph13 km/h	86%	73%	1
Fri 11a	Mostly cloudy	60°16° (likely 57°14° to 62°17°)	60°16°	0%	5 mph8 km/h from S, gusts 10 mph17 km/h	81%	48%	2
Fri 12p	Partly sunny	62°17° (likely 60°16° to 65°18°)	62°17°	0%	6 mph10 km/h from S, gusts 11 mph17 km/h	78%	29%	3
Fri 1p	Partly sunny	66°19° (likely 63°17° to 68°20°)	66°19°	0%	6 mph10 km/h from S, gusts 10 mph16 km/h	69%	22%	3
Fri 2p	Partly sunny	66°19° (likely 65°18° to 70°21°)	66°19°	0%	7 mph11 km/h from S, gusts 11 mph18 km/h	69%	19%	2
Fri 3p	Partly sunny	66°19° (likely 66°19° to 70°21°)	66°19°	0%	7 mph11 km/h from SSE, gusts 12 mph19 km/h	69%	25%	2
Fri 4p	Sunny	68°20° (likely 65°18° to 70°21°)	68°20°	0%	7 mph11 km/h from SSE, gusts 12 mph20 km/h	66%	29%	1
Fri 5p	Partly sunny	66°19° (likely 61°16° to 67°19°)	66°19°	0%	7 mph11 km/h from SSE, gusts 13 mph20 km/h	71%	59%	0
Fri 6p	Clear	63°17° (likely 57°14° to 63°17°)	63°17°	0%	7 mph11 km/h from SSE, gusts 12 mph20 km/h	74%	33%	0
Fri 7p	Clear	60°16° (likely 55°13° to 60°16°)	60°16°	0%	6 mph10 km/h from SSE, gusts 12 mph20 km/h	77%	39%	0
Fri 8p	Clear	57°14° (likely 54°12° to 58°14°)	57°14°	0%	6 mph10 km/h from SSE, gusts 12 mph20 km/h	82%	41%	0
Fri 9p	Mostly cloudy	56°13° (likely 53°12° to 57°14°)	56°13°	0%	6 mph10 km/h from SSE, gusts 13 mph20 km/h	82%	51%	0
Fri 10p	Cloudy	55°13° (likely 53°12° to 57°14°)	55°13°	0%	6 mph10 km/h from SSE, gusts 13 mph20 km/h	79%	74%	0
Fri 11p	Cloudy	54°12° (likely 52°11° to 56°13°)	54°12°	0%	6 mph10 km/h from SSE, gusts 13 mph20 km/h	82%	80%	0
Sat 12a	Cloudy	55°13° (likely 51°11° to 56°13°)	55°13°	0%	6 mph10 km/h from SSE, gusts 12 mph20 km/h	78%	80%	0
Sat 1a	Cloudy	55°13° (likely 51°11° to 56°13°)	55°13°	0%	6 mph10 km/h from SSE, gusts 12 mph19 km/h	78%	80%	0
Sat 2a	Cloudy	55°13° (likely 51°11° to 56°13°)	55°13°	0%	6 mph10 km/h from SSE, gusts 12 mph19 km/h	78%	77%	0
Sat 3a	Cloudy	54°12° (likely 51°11° to 55°13°)	54°12°	0%	6 mph10 km/h from SSE, gusts 11 mph17 km/h	81%	70%	0
Sat 4a	Cloudy	53°12° (likely 51°11° to 55°13°)	53°12°	0%	5 mph8 km/h from SSE, gusts 11 mph18 km/h	82%	74%	0
Sat 5a	Cloudy	53°12° (likely 51°11° to 55°13°)	53°12°	0%	6 mph10 km/h from SSE, gusts 11 mph17 km/h	85%	74%	0
Sat 6a	Cloudy	53°12° (likely 51°11° to 55°13°)	53°12°	0%	6 mph10 km/h from SSE, gusts 12 mph19 km/h	82%	75%	0
Sat 7a	Cloudy	53°12° (likely 51°11° to 56°13°)	53°12°	0%	5 mph8 km/h from S, gusts 12 mph20 km/h	84%	76%	0
Sat 8a	Cloudy	55°13° (likely 52°11° to 56°13°)	55°13°	0%	6 mph10 km/h from S, gusts 13 mph21 km/h	80%	82%	0
Sat 9a	Cloudy	57°14° (likely 54°12° to 58°14°)	57°14°	0%	7 mph11 km/h from S, gusts 13 mph22 km/h	78%	76%	1
Sat 10a	Cloudy	60°16° (likely 56°13° to 61°16°)	60°16°	0%	7 mph11 km/h from S, gusts 16 mph26 km/h	72%	87%	1
Sat 11a	Mostly cloudy	62°17° (likely 61°16° to 64°18°)	62°17°	0%	9 mph14 km/h from S, gusts 19 mph31 km/h	67%	69%	2
Sat 12p	Cloudy	65°18° (likely 65°18° to 67°19°)	65°18°	0%	9 mph14 km/h from S, gusts 21 mph34 km/h	63%	76%	2
Sat 1p	Cloudy	66°19° (likely 66°19° to 69°21°)	66°19°	0%	10 mph16 km/h from S, gusts 21 mph35 km/h	61%	79%	2
Sat 2p	Cloudy	66°19° (likely 66°19° to 70°21°)	66°19°	0%	10 mph16 km/h from S, gusts 23 mph37 km/h	61%	80%	2
Sat 3p	Cloudy	68°20° (likely 68°20° to 70°21°)	68°20°	0%	10 mph16 km/h from S, gusts 22 mph36 km/h	59%	78%	2
Sat 4p	Cloudy	66°19° (likely 66°19° to 69°21°)	66°19°	0%	9 mph14 km/h from S, gusts 22 mph36 km/h	63%	77%	1
Sat 5p	Cloudy	66°19° (likely 65°18° to 67°19°)	66°19°	0%	9 mph14 km/h from S, gusts 21 mph33 km/h	63%	68%	1
Sat 6p	Cloudy	65°18° (likely 62°17° to 65°18°)	65°18°	0%	8 mph13 km/h from S, gusts 21 mph34 km/h	63%	59%	0
Sat 7p	Cloudy	62°17° (likely 61°16° to 62°17°)	62°17°	0%	8 mph13 km/h from S, gusts 21 mph34 km/h	67%	65%	0
Sat 8p	Partly cloudy	61°16° (likely 60°16° to 61°16°)	61°16°	0%	8 mph13 km/h from S, gusts 19 mph30 km/h	70%	61%	0
Sat 9p	Cloudy	60°16° (likely 58°14° to 60°16°)	60°16°	0%	8 mph13 km/h from S, gusts 15 mph24 km/h	72%	70%	0
Sat 10p	Cloudy	60°16° (likely 57°14° to 60°16°)	60°16°	0%	7 mph11 km/h from S, gusts 14 mph23 km/h	69%	91%	0
Sat 11p	Cloudy	60°16° (likely 58°14° to 60°16°)	60°16°	0%	7 mph11 km/h from S, gusts 16 mph25 km/h	69%	88%	0
Sun 12a	Cloudy	59°15° (likely 57°14° to 59°15°)	59°15°	0%	6 mph10 km/h from SSW, gusts 17 mph27 km/h	69%	80%	0
Sun 1a	Cloudy	59°15° (likely 57°14° to 59°15°)	59°15°	0%	6 mph10 km/h from SSW, gusts 17 mph28 km/h	69%	83%	0
Sun 2a	Cloudy	59°15° (likely 56°13° to 60°16°)	59°15°	0%	6 mph10 km/h from SSW, gusts 19 mph30 km/h	69%	81%	0
Sun 3a	Cloudy	58°14° (likely 57°14° to 60°16°)	58°14°	0%	6 mph10 km/h from SSW, gusts 19 mph30 km/h	72%	86%	0
Sun 4a	Cloudy	57°14° (likely 56°13° to 60°16°)	57°14°	0%	6 mph10 km/h from SSW, gusts 18 mph29 km/h	75%	92%	0
Sun 5a	Cloudy	57°14° (likely 56°13° to 60°16°)	57°14°	0%	6 mph10 km/h from SSW, gusts 17 mph27 km/h	75%	95%	0

Days ahead

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

Today, Oct 23. Fog. High 68°20°, low 52°11°. Typical 55°13° / 37°3°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Mostly cloudy, 51°11°
  Dry
2. Afternoon
  noon–6 PM
  Partly sunny, 68°20°
  Dry
3. Evening
  6 PM–midnight
  Mostly cloudy, 57°14°
  Dry
4. Overnight
  midnight–6 AM
  Cloudy, 53°12°
  Dry
Official NWS forecast
Today: Patchy fog before 8am. Partly sunny. High near 68, with temperatures falling to around 66 in the afternoon. South southeast wind 2 to 7 mph.
Tonight: Partly cloudy, with a low around 52. South southeast wind around 7 mph.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
66°19°–70°21°
Low, likely
48°9°–52°11°
Typical high / low
55°13° / 37°3°
Wind
9 mph15 km/h, gusts 16 mph26 km/h
UV peak
4
Tomorrow, Oct 24. Cloudy. High 68°20°, low 55°13°. Typical 54°12° / 37°3°. Dry. Forecasts agree.
1. Morning
  6 AM–noon
  Cloudy, 55°13°
  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
Official NWS forecast
Day: Mostly cloudy. High near 68, with temperatures falling to around 66 in the afternoon. South wind 5 to 10 mph, with gusts as high as 20 mph.
Night: Mostly cloudy, with a low around 55. South wind around 8 mph, with gusts as high as 18 mph.
Forecasts agreeIndependent forecasts are close; the range is narrow.
High, likely
68°20°–70°21°
Low, likely
50°10°–55°13°
Typical high / low
54°12° / 37°3°
Wind
13 mph21 km/h, gusts 24 mph39 km/h
UV peak
2
Sunday, Oct 25. Mostly cloudy. High 65°18°, low 47°8°. Typical 54°12° / 37°3°. Dry. Forecasts agree.
1. Morning
  6 AM–noon
  Cloudy, 57°14°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 67°20°
  Dry
3. Evening
  6 PM–midnight
  Cloudy, 57°14°
  Dry
4. Overnight
  midnight–6 AM
  Cloudy, 52°11°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Mostly cloudy, with a high near 65. West wind around 5 mph.
Night: Mostly cloudy, with a low around 47.
Forecasts agreeIndependent forecasts are close; the range is narrow.
High, likely
65°18°–68°20°
Low, likely
47°8°–57°14°
Typical high / low
54°12° / 37°3°
Wind
14 mph22 km/h, gusts 26 mph42 km/h
UV peak
3
Monday, Oct 26. Mostly cloudy. High 53°12°, low 42°6°. Typical 53°12° / 36°2°. Dry. Forecasts differ.
1. Morning
  6 AM–noon
  Cloudy, 51°11°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 52°11°
  Dry
3. Evening
  6 PM–midnight
  Cloudy, 49°9°
  Dry
4. Overnight
  midnight–6 AM
  Cloudy, 47°8°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Mostly cloudy, with a high near 53.
Night: Mostly cloudy, with a low around 42.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
High, likely
51°11°–57°14°
Low, likely
42°6°–49°9°
Typical high / low
53°12° / 36°2°
Wind
14 mph22 km/h, gusts 30 mph49 km/h
Tuesday, Oct 27. Showers. High 54°12°, low 45°7°. Typical 53°12° / 36°2°. Rain 0.07 in1.8 mm, 20% chance. Forecasts differ.
1. Morning
  6 AM–noon
  Cloudy, 49°9°
  Dry
2. Afternoon
  noon–6 PM
  Drizzle, 54°12°
  Dry
3. Evening
  6 PM–midnight
  Drizzle, 53°11°
  Dry
4. Overnight
  midnight–6 AM
  Cloudy, 53°12°
  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 cloudy, with a high near 54. Chance of precipitation is 20%.
Night: A slight chance of rain showers after 7pm. Mostly cloudy, with a low around 45. Chance of precipitation is 20%.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
High, likely
51°11°–58°14°
Low, likely
44°7°–49°9°
Typical high / low
53°12° / 36°2°
Wind
14 mph22 km/h, gusts 31 mph50 km/h
UV peak
1
Wednesday, Oct 28. Mostly cloudy. High 62°17°, low 48°9°. Typical 52°11° / 36°2°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Mostly sunny, 55°13°
  Dry
2. Afternoon
  noon–6 PM
  Mostly sunny, 67°19°
  Dry
3. Evening
  6 PM–midnight
  Mostly clear, 60°16°
  Dry
4. Overnight
  midnight–6 AM
  Drizzle, 55°13°
  20% chance · 0.06 in1.4 mm
Hours this far out come from computer models only.
Official NWS forecast
Day: A slight chance of rain showers before 7am. Partly sunny, with a high near 62. Chance of precipitation is 20%.
Night: A chance of rain showers after 7pm. Partly cloudy, with a low around 48. Chance of precipitation is 30%.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
62°17°–69°21°
Low, likely
48°9°–53°12°
Typical high / low
52°11° / 36°2°
Wind
16 mph25 km/h, gusts 37 mph59 km/h
UV peak
3
Thursday, Oct 29. Showers. High 61°16°, low 43°6°. Typical 52°11° / 35°2°. Rain 0.14 in3.6 mm, 30% chance. Forecasts differ.
1. Morning
  6 AM–noon
  Drizzle, 53°12°
  20% chance · 0.03 in0.7 mm
2. Afternoon
  noon–6 PM
  Sunny, 57°14°
  Dry
3. Evening
  6 PM–midnight
  Clear, 50°10°
  Dry
4. Overnight
  midnight–6 AM
  Partly cloudy, 42°6°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: A chance of rain showers. Partly sunny, with a high near 61. Chance of precipitation is 30%.
Night: A slight chance of rain showers. Partly cloudy, with a low around 43. Chance of precipitation is 20%.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
High, likely
56°13°–62°17°
Low, likely
43°6°–49°9°
Typical high / low
52°11° / 35°2°
Wind
18 mph28 km/h, gusts 40 mph65 km/h
Friday, Oct 30. Rain. High 52°11°, low 41°5°. Typical 51°11° / 35°2°. Rain 0.21 in5.3 mm, 20% chance. Forecasts differ.
1. Morning
  6 AM–noon
  Cloudy, 42°5°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 48°9°
  Dry
3. Evening
  6 PM–midnight
  Clear, 43°6°
  20% chance · 0.08 in2 mm
4. Overnight
  midnight–6 AM
  Drizzle, 38°3°
  30% 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
45°7°–59°15°
Low, likely
36°2°–46°8°
Typical high / low
51°11° / 35°2°
Wind
19 mph30 km/h, gusts 28 mph46 km/h
Saturday, Oct 31. Drizzle. High 55°13°, low 41°5°. Typical 51°11° / 35°2°. Rain 0.11 in2.8 mm, 30% chance. Forecasts differ.
1. Morning
  6 AM–noon
  Drizzle, 42°5°
  30% chance
2. Afternoon
  noon–6 PM
  Drizzle, 54°12°
  30% chance · 0.02 in0.5 mm
3. Evening
  6 PM–midnight
  Drizzle, 50°10°
  30% chance
4. Overnight
  midnight–6 AM
  Drizzle, 50°10°
  30% 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
48°9°–62°17°
Low, likely
32°0°–51°11°
Typical high / low
51°11° / 35°2°
Wind
18 mph29 km/h, gusts 29 mph47 km/h
Sunday, Nov 1. Drizzle. High 56°13°, low 46°8°. Typical 50°10° / 34°1°. Rain 0.11 in2.8 mm, 40% chance. Forecasts differ.
1. Morning
  6 AM–noon
  Drizzle, 51°10°
  40% chance · 0.01 in0.3 mm
2. Afternoon
  noon–6 PM
  Drizzle, 55°13°
  20% chance
3. Evening
  6 PM–midnight
  Drizzle, 47°8°
  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 differIndependent forecasts disagree; expect changes and plan for the range.
High, likely
47°8°–60°16°
Low, likely
40°4°–51°11°
Typical high / low
50°10° / 34°1°
Wind
16 mph26 km/h, gusts 27 mph44 km/h

10 days15 days30 days

The outlook

Today
Dry, high 68°, low 52°.
Tomorrow
Dry, high 68°, low 55°.
Sunday
Dry, high 65°, low 47°, cooling off.
Rest of week
Mostly dry, highs 52–62°.

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

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 12Typical 142

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 (air quality forecast not available for part of this window).

Is this typical?

Green Bay A S International Airport · official normals 1991–2020 · records 1886–2026

Oct 23, today vs a typical year

Today’s expected high is 13°7° warmer than typical.

Last 7 days vs normal

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

−5°−3°SatOct 17
+5°+3°SunOct 18
+5°+3°MonOct 19
+4°+2°TueOct 20
+6°+3°WedOct 21
+5°+3°ThuOct 22
—FriOct 23

Green Bay weather by month: normals, records, snow and freeze dates

Sun & moon

Sun

Daylight: 10 h 37 min; Losing 2 min 53 s a day; shortest Dec 21, 1 h 47 min less
Golden hour: 5:13–6:12 PM; Morning 6:59–7:58 AM
Blue hour: 6:12–6:23 PM; Morning 6:47–6:59 AM; first light 6:47 AM

Stars tonight? Unknown

Cloud forecast not available for tonight.

Moon

Waxing gibbous

91% lit · growing

Today: sets 4:17 AM · rises 4:30 PM
Full moon: Oct 25
New moon: Nov 9

Looking north from Green Bay. Open water to the horizon.Skyline from USGS elevation data, heights drawn up to 6× taller. Sky, sun and moon as they are now.

1 active weather alert

Dense Fog Advisory