Observed 5:35 AM CDT at KETB

Lannon, WI weather

Foggy and 41°5°, 13°7° warmer than a typical Oct 24.

Forecasts agree

Now 41°5°

Fog

Wind: Calm; Up to 10 mph16 km/h through 7 PM
Visibility: 2 mi3 km; Fog · under 3 mi5 km
Dew point: 41°5°; Comfortable · up to 50°10° by 7 PM
Humidity: 100%; Air 41°5°, dew point 41°5° · fog or dew likely
UV index: 0Low; Moderate 1–2 PM · peak 3
Air quality: 66Moderate; Main pollutant: PM2.5 (fine particles)
Pressure: 30.37 inHg1028 hPa; Rising slowly · +0.02 inHg+0.8 hPa in 3 h

No precipitation expected in the next 2 hours.

From forecast models

Next 48 hours

Good hours for

Fog until 9 AM
Above 60°16° today by 11 AM
High 69°21° today at 4 PM
Below 60°16° tonight after 8 PM

This morningUp to 62°17° by 11 AM · Mostly cloudy
This afternoonUp to 69°21° by 4 PM · Mostly cloudy
TonightDown to 54°12° by 3 AM · Mostly cloudy
Tomorrow morningUp to 64°18° by 11 AM · Mostly cloudy
Tomorrow afternoonNear 70°21° · Mostly cloudy
Tomorrow nightDown to 51°11° by 5 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
Sat 7a	Fog	47°8° (likely 44°7° to 51°11°)	46°8°	5%	5 mph8 km/h from S, gusts 8 mph12 km/h	93%	72%	0
Sat 8a	Fog	50°10° (likely 46°8° to 52°11°)	48°9°	5%	5 mph8 km/h from S, gusts 9 mph15 km/h	86%	79%	0
Sat 9a	Cloudy	54°12° (likely 52°11° to 55°13°)	54°12°	5%	5 mph8 km/h from S, gusts 11 mph17 km/h	77%	81%	0
Sat 10a	Cloudy	59°15° (likely 56°13° to 59°15°)	59°15°	5%	5 mph8 km/h from S, gusts 16 mph25 km/h	64%	80%	1
Sat 11a	Cloudy	62°17° (likely 60°16° to 62°17°)	62°17°	0%	5 mph8 km/h from S, gusts 16 mph26 km/h	60%	80%	2
Sat 12p	Cloudy	65°18° (likely 63°17° to 65°18°)	65°18°	0%	10 mph16 km/h from S, gusts 15 mph24 km/h	54%	79%	2
Sat 1p	Cloudy	68°20° (likely 65°18° to 68°20°)	68°20°	0%	10 mph16 km/h from S, gusts 15 mph23 km/h	49%	79%	3
Sat 2p	Cloudy	68°20° (likely 67°19° to 69°21°)	68°20°	0%	10 mph16 km/h from S, gusts 14 mph23 km/h	49%	67%	2
Sat 3p	Cloudy	68°20° (likely 67°19° to 69°21°)	68°20°	0%	10 mph16 km/h from S, gusts 15 mph24 km/h	49%	69%	2
Sat 4p	Cloudy	69°21° (likely 66°19° to 69°21°)	69°21°	5%	10 mph16 km/h from S, gusts 15 mph25 km/h	47%	71%	1
Sat 5p	Cloudy	67°19° (likely 65°18° to 67°19°)	67°19°	5%	10 mph16 km/h from S, gusts 16 mph25 km/h	50%	80%	0
Sat 6p	Cloudy	65°18° (likely 61°16° to 65°18°)	65°18°	5%	5 mph8 km/h from S, gusts 12 mph20 km/h	54%	80%	0
Sat 7p	Cloudy	63°17° (likely 59°15° to 63°17°)	63°17°	5%	5 mph8 km/h from S, gusts 11 mph17 km/h	62%	72%	0
Sat 8p	Cloudy	59°15° (likely 57°14° to 59°15°)	59°15°	5%	5 mph8 km/h from S, gusts 11 mph18 km/h	72%	81%	0
Sat 9p	Cloudy	58°14° (likely 55°13° to 58°14°)	58°14°	5%	5 mph8 km/h from S, gusts 10 mph16 km/h	75%	77%	0
Sat 10p	Partly cloudy	57°14° (likely 55°13° to 57°14°)	57°14°	5%	5 mph8 km/h from S, gusts 10 mph17 km/h	75%	48%	0
Sat 11p	Cloudy	57°14° (likely 56°13° to 57°14°)	57°14°	5%	5 mph8 km/h from S, gusts 10 mph16 km/h	72%	80%	0
Sun 12a	Cloudy	56°13° (likely 55°13° to 57°14°)	56°13°	5%	5 mph8 km/h from S, gusts 10 mph16 km/h	74%	93%	0
Sun 1a	Cloudy	55°13° (likely 55°13° to 57°14°)	55°13°	5%	5 mph8 km/h from S, gusts 12 mph19 km/h	74%	98%	0
Sun 2a	Cloudy	55°13° (likely 54°12° to 56°13°)	55°13°	5%	5 mph8 km/h from SW, gusts 12 mph20 km/h	74%	98%	0
Sun 3a	Cloudy	54°12° (likely 53°12° to 56°13°)	54°12°	5%	5 mph8 km/h from SW, gusts 12 mph19 km/h	74%	91%	0
Sun 4a	Cloudy	54°12° (likely 53°12° to 55°13°)	54°12°	5%	5 mph8 km/h from SW, gusts 12 mph19 km/h	74%	90%	0
Sun 5a	Cloudy	54°12° (likely 53°12° to 55°13°)	54°12°	5%	5 mph8 km/h from SW, gusts 12 mph19 km/h	71%	75%	0
Sun 6a	Cloudy	53°12° (likely 53°12° to 55°13°)	53°12°	5%	5 mph8 km/h from SW, gusts 11 mph18 km/h	74%	87%	0
Sun 7a	Cloudy	52°11° (likely 52°11° to 55°13°)	52°11°	0%	5 mph8 km/h from SW, gusts 11 mph17 km/h	77%	86%	0
Sun 8a	Cloudy	54°12° (likely 53°12° to 55°13°)	54°12°	0%	5 mph8 km/h from SW, gusts 10 mph17 km/h	74%	80%	0
Sun 9a	Cloudy	56°13° (likely 55°13° to 58°14°)	56°13°	0%	5 mph8 km/h from SW, gusts 12 mph19 km/h	74%	85%	1
Sun 10a	Partly sunny	61°16° (likely 59°15° to 61°16°)	61°16°	0%	5 mph8 km/h from SW, gusts 14 mph22 km/h	65%	81%	1
Sun 11a	Partly sunny	64°18° (likely 63°17° to 65°18°)	64°18°	0%	5 mph8 km/h from SW, gusts 12 mph20 km/h	60%	65%	2
Sun 12p	Partly sunny	69°21° (likely 66°19° to 69°21°)	69°21°	0%	5 mph8 km/h from SW, gusts 11 mph17 km/h	51%	41%	3
Sun 1p	Partly sunny	70°21° (likely 68°20° to 71°22°)	70°21°	0%	5 mph8 km/h from SW, gusts 11 mph17 km/h	49%	38%	3
Sun 2p	Partly sunny	71°22° (likely 70°21° to 72°22°)	71°22°	0%	5 mph8 km/h from SW, gusts 11 mph17 km/h	47%	54%	3
Sun 3p	Partly sunny	72°22° (likely 70°21° to 73°23°)	72°22°	0%	5 mph8 km/h from SW, gusts 6 mph10 km/h	48%	76%	3
Sun 4p	Cloudy	72°22° (likely 63°17° to 72°22°)	72°22°	0%	5 mph8 km/h from SW, gusts 9 mph15 km/h	49%	81%	2
Sun 5p	Cloudy	70°21° (likely 58°14° to 70°21°)	70°21°	0%	0 mph0 km/h, gusts 9 mph14 km/h	53%	80%	1
Sun 6p	Cloudy	67°19° (likely 55°13° to 67°19°)	67°19°	0%	0 mph0 km/h, gusts 9 mph15 km/h	59%	80%	0
Sun 7p	Cloudy	62°17° (likely 54°12° to 62°17°)	62°17°	0%	0 mph0 km/h, gusts 9 mph15 km/h	70%	79%	0
Sun 8p	Cloudy	60°16° (likely 54°12° to 60°16°)	60°16°	0%	0 mph0 km/h, gusts 10 mph15 km/h	78%	75%	0
Sun 9p	Cloudy	58°14° (likely 54°12° to 59°15°)	58°14°	0%	0 mph0 km/h, gusts 11 mph18 km/h	83%	67%	0
Sun 10p	Cloudy	57°14° (likely 53°12° to 58°14°)	57°14°	0%	0 mph0 km/h, gusts 12 mph20 km/h	83%	62%	0
Sun 11p	Cloudy	56°13° (likely 54°12° to 57°14°)	56°13°	0%	0 mph0 km/h, gusts 13 mph20 km/h	83%	60%	0
Mon 12a	Cloudy	55°13° (likely 54°12° to 56°13°)	55°13°	0%	0 mph0 km/h, gusts 13 mph20 km/h	86%	61%	0
Mon 1a	Cloudy	54°12° (likely 53°12° to 56°13°)	54°12°	0%	0 mph0 km/h, gusts 13 mph21 km/h	86%	65%	0
Mon 2a	Mostly cloudy	53°12° (likely 51°11° to 54°12°)	53°12°	0%	5 mph8 km/h from N, gusts 12 mph20 km/h	86%	65%	0
Mon 3a	Mostly cloudy	53°12° (likely 51°11° to 53°12°)	53°12°	0%	5 mph8 km/h from NE, gusts 15 mph24 km/h	83%	70%	0
Mon 4a	Mostly cloudy	52°11° (likely 51°11° to 52°11°)	52°11°	0%	5 mph8 km/h from NE, gusts 17 mph27 km/h	83%	74%	0
Mon 5a	Mostly cloudy	51°11° (likely 50°10° to 52°11°)	51°11°	0%	5 mph8 km/h from NE, gusts 17 mph27 km/h	83%	72%	0
Mon 6a	Cloudy	50°10° (likely 49°9° to 51°11°)	48°9°	0%	5 mph8 km/h from NE, gusts 16 mph26 km/h	83%	82%	0

Days ahead

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

Today, Oct 24. Fog. High 69°21°, low 52°11°. Typical 56°13° / 37°3°. Dry. Forecasts agree.
1. Morning
  6 AM–noon
  Cloudy, 50°10°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 69°21°
  Dry
3. Evening
  6 PM–midnight
  Cloudy, 59°15°
  Dry
4. Overnight
  midnight–6 AM
  Cloudy, 54°12°
  Dry
Official NWS forecast
Today: Patchy fog before 9am. Partly sunny, with a high near 69. South wind 5 to 10 mph.
Tonight: Mostly cloudy, with a low around 52. South wind around 5 mph.
Forecasts agreeIndependent forecasts are close; the range is narrow.
High, likely
67°19°–69°21°
Low, likely
44°7°–52°11°
Typical high / low
56°13° / 37°3°
Wind
11 mph17 km/h, gusts 21 mph33 km/h
UV peak
3
Tomorrow, Oct 25. Cloudy. High 72°22°, low 50°10°. Typical 56°13° / 37°3°. Dry. Forecasts agree.
1. Morning
  6 AM–noon
  Cloudy, 54°12°
  Dry
2. Afternoon
  noon–6 PM
  Partly sunny, 72°22°
  Dry
3. Evening
  6 PM–midnight
  Cloudy, 60°16°
  Dry
4. Overnight
  midnight–6 AM
  Mostly cloudy, 51°11°
  Dry
Official NWS forecast
Day: Mostly sunny, with a high near 72. Southwest wind 0 to 5 mph.
Night: Mostly cloudy, with a low around 50. Northwest wind 0 to 5 mph.
Forecasts agreeIndependent forecasts are close; the range is narrow.
High, likely
70°21°–73°23°
Low, likely
50°10°–55°13°
Typical high / low
56°13° / 37°3°
Wind
10 mph15 km/h, gusts 19 mph31 km/h
UV peak
3
Monday, Oct 26. Mostly cloudy. High 59°15°, low 46°8°. Typical 56°13° / 36°2°. Dry. Forecasts agree.
1. Morning
  6 AM–noon
  Cloudy, 50°10°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 57°14°
  Dry
3. Evening
  6 PM–midnight
  Cloudy, 50°10°
  Dry
4. Overnight
  midnight–6 AM
  Cloudy, 50°10°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Mostly cloudy. High near 59, with temperatures falling to around 54 in the afternoon. Northeast wind 5 to 10 mph.
Night: Mostly cloudy, with a low around 46. Northeast wind 5 to 10 mph.
Forecasts agreeIndependent forecasts are close; the range is narrow.
High, likely
56°13°–59°15°
Low, likely
46°8°–50°10°
Typical high / low
56°13° / 36°2°
Wind
14 mph22 km/h, gusts 22 mph35 km/h
UV peak
3
Tuesday, Oct 27. Cloudy. High 59°15°, low 50°10°. Typical 55°13° / 36°2°. Dry. Forecasts differ.
1. Morning
  6 AM–noon
  Cloudy, 52°11°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 61°16°
  Dry
3. Evening
  6 PM–midnight
  Cloudy, 56°13°
  Dry
4. Overnight
  midnight–6 AM
  Cloudy, 55°13°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Partly sunny, with a high near 59. East wind 5 to 10 mph.
Night: Mostly cloudy, with a low around 50. Southeast wind around 5 mph.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
High, likely
58°14°–65°18°
Low, likely
48°9°–52°11°
Typical high / low
55°13° / 36°2°
Wind
12 mph19 km/h, gusts 29 mph47 km/h
UV peak
3
Wednesday, Oct 28. Partly sunny. High 69°21°, low 51°11°. Typical 54°12° / 36°2°. Rain 0.02 in0.5 mm, 20% chance. Mostly agree.
1. Morning
  6 AM–noon
  Partly sunny, 55°13°
  Dry
2. Afternoon
  noon–6 PM
  Partly sunny, 69°20°
  Dry
3. Evening
  6 PM–midnight
  Cloudy, 61°16°
  Dry
4. Overnight
  midnight–6 AM
  Cloudy, 56°13°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: A slight chance of rain showers after 1pm. Mostly sunny, with a high near 69. Chance of precipitation is 20%.
Night: A slight chance of rain showers. Partly cloudy, with a low around 51. Chance of precipitation is 20%.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
67°19°–70°21°
Low, likely
51°11°–55°13°
Typical high / low
54°12° / 36°2°
Wind
15 mph24 km/h, gusts 32 mph51 km/h
UV peak
4
Thursday, Oct 29. Showers. High 65°18°, low 46°8°. Typical 54°12° / 35°2°. Rain 0.09 in2.3 mm, 20% chance. Forecasts differ.
1. Morning
  6 AM–noon
  Cloudy, 55°13°
  Dry
2. Afternoon
  noon–6 PM
  Drizzle, 65°18°
  Dry
3. Evening
  6 PM–midnight
  Clear, 56°13°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 47°8°
  20% chance
Hours this far out come from computer models only.
Official NWS forecast
Day: A slight chance of rain showers before 7am. Mostly sunny, with a high near 65. Chance of precipitation is 20%.
Night: A slight chance of rain showers after 7pm. Partly cloudy, with a low around 46. Chance of precipitation is 20%.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
High, likely
61°16°–69°21°
Low, likely
46°8°–56°13°
Typical high / low
54°12° / 35°2°
Wind
12 mph19 km/h, gusts 32 mph51 km/h
UV peak
1
Friday, Oct 30. Showers. High 64°18°, low 47°8°. Typical 54°12° / 35°2°. Rain 0.03 in0.8 mm, 20% chance. Forecasts differ.
1. Morning
  6 AM–noon
  Partly sunny, 49°9°
  20% chance
2. Afternoon
  noon–6 PM
  Cloudy, 63°17°
  Dry
3. Evening
  6 PM–midnight
  Mostly clear, 56°13°
  Dry
4. Overnight
  midnight–6 AM
  Drizzle, 55°13°
  30% chance · 0.04 in1.1 mm
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 64. Chance of precipitation is 20%.
Night: A chance of rain showers. Mostly cloudy, with a low around 47. Chance of precipitation is 30%.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
High, likely
55°13°–73°23°
Low, likely
39°4°–58°14°
Typical high / low
54°12° / 35°2°
Wind
12 mph20 km/h, gusts 22 mph36 km/h
UV peak
3
Saturday, Oct 31. Cloudy. High 64°18°, low 55°13°. Typical 53°12° / 35°2°. Rain 0.09 in2.3 mm, 40% chance. Forecasts differ.
1. Morning
  6 AM–noon
  Drizzle, 55°13°
  30% chance · 0.02 in0.5 mm
2. Afternoon
  noon–6 PM
  Cloudy, 63°17°
  30% chance
3. Evening
  6 PM–midnight
  Drizzle, 60°15°
  40% chance · 0.03 in0.8 mm
4. Overnight
  midnight–6 AM
  Drizzle, 58°14°
  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
55°13°–70°21°
Low, likely
48°9°–59°15°
Typical high / low
53°12° / 35°2°
Wind
13 mph22 km/h, gusts 26 mph42 km/h
UV peak
2
Sunday, Nov 1. Drizzle. High 63°17°, low 57°14°. Typical 52°11° / 34°1°. Rain 0.49 in12 mm, 50% chance. Mostly agree.
1. Morning
  6 AM–noon
  Drizzle, 59°15°
  40% chance · 0.09 in2.2 mm
2. Afternoon
  noon–6 PM
  Drizzle, 61°16°
  40% chance · 0.22 in5.6 mm
3. Evening
  6 PM–midnight
  Drizzle, 60°15°
  40% chance · 0.14 in3.5 mm
4. Overnight
  midnight–6 AM
  Drizzle, 56°13°
  30% chance · 0.03 in0.8 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.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
60°16°–67°19°
Low, likely
53°12°–59°15°
Typical high / low
52°11° / 34°1°
Wind
26 mph42 km/h, gusts 41 mph67 km/h
UV peak
1
Monday, Nov 2. Drizzle. High 60°16°, low 51°11°. Typical 52°11° / 34°1°. Rain 0.26 in6.6 mm, 40% chance. Mostly agree.
1. Morning
  6 AM–noon
  Drizzle, 56°13°
  30% chance · 0.02 in0.6 mm
2. Afternoon
  noon–6 PM
  Drizzle, 56°13°
  20% chance · 0.14 in3.5 mm
3. Evening
  6 PM–midnight
  Cloudy, 52°11°
  20% chance · 0.32 in8.2 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
58°14°–64°18°
Low, likely
43°6°–59°15°
Typical high / low
52°11° / 34°1°
Wind
20 mph33 km/h, gusts 37 mph60 km/h
UV peak
1

10 days15 days30 days

The outlook

Today
Dry, high 69°, low 52°.
Tomorrow
Dry, high 72°, low 50°, warming up.
Monday
Dry, high 59°, low 46°, cooling off.
Rest of week
Highs 59–69°; chance of precipitation on Sunday.

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

Menomonee River at Menomonee Falls

2.9 mi

Below flood stage

Level: 3.2 ft
Flow: 15 cfs

Reading from Sat 5 AM · NWS gauge page

Menomonee River at Wauwatosa

11 mi

Below flood stage

Level: 1.8 ft
Flow: 40 cfs

Reading from Sat 5 AM · NWS gauge page

Fox River at Waukesha

11 mi

Below flood stage

Level: 3.0 ft
Flow: 117 cfs

Reading from Sat 5 AM · NWS gauge page

Milwaukee River at Milwaukee-Estabrook Park

13 mi

Below flood stage

Level: 1.0 ft
Flow: 405 cfs

Reading from Sat 5 AM · NWS gauge page

For your home

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

Heating this week

About 91% less heating than a typical week.

This week 12Typical 137

Heating degree days, base 65°F

Comfort

Dry air outside (dew point 41°F).

Open the windows?

Today, 11:00 AM–7:00 PM

Good stretch to open the windows.

Is this typical?

WAUKESHA WWTP · official normals 1991–2020 · records 1894–2026

Oct 24, today vs a typical year

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

Last 7 days vs normal

On average 0° warmer than normal (daily mean temperature).

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

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

Sun & moon

Sun

Daylight: 10 h 38 min; Losing 2 min 44 s a day; shortest Dec 21, 1 h 39 min less
Golden hour: 5:15–6:13 PM; Morning 6:59–7:57 AM
Blue hour: 6:13–6:24 PM; Morning 6:48–6:59 AM; first light 6:48 AM

Stars tonight? Poor

Clouds most of the night (about 82% cover).

Moon

Waxing gibbous

96% lit · growing

Today: sets 5:29 AM · rises 4:53 PM
Full moon: Oct 25
New moon: Nov 9

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

Lannon, WI weather

Next 2 hours

Next 48 hours

Days ahead

The outlook

Today

Tomorrow

Monday

Rest of week

What changed since yesterday

Radar

Rivers

Menomonee River at Menomonee Falls

Menomonee River at Wauwatosa

Fox River at Waukesha

Milwaukee River at Milwaukee-Estabrook Park

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