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Shaded-relief atlas plate of Erin, Wisconsin: rivers, roads, the city limits and where the water drains.
WISCONSIN · WASHINGTON COUNTY

Erin

3,816 people, in Washington County.

3,816People, 2024 estimate
36 sq miLand area
Sunny 69°
Sunny now Dew point 61° · SE 8 mph · high 70°
City of Erin River Interstate 2 miles
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The Erin plate. Relief from Copernicus GLO-30; rivers and lakes from USGS NHD; watersheds from the USGS Watershed Boundary Dataset; roads and city limits from Census TIGER 2024.

MILE1
TODAY

Today in Erin

NWS forecast and National Blend of Models · updated 1:00 PM CDT
RIGHT NOW General Mitchell International Airport (KMKE) · 1:52 PM
Sunny
69° Sunny Feels like 69° · high of 70° near 2 PM
WindSE 8 mphno gusts
Humidity75%falling to 63% this afternoon
Pressure29.98 in →steady
Visibility10 mihaze-free
CloudsClear
UV index—no forecast
Dew point 61° · Sticky48° by Friday: drier air arrives
DryComfortableStickyMuggyOppressive
NEXT RAIN
Mostly cloudy
Tomorrow, about 4 AMin about 13 hours · 63% chance · rain
LIKELY AMOUNT—amounts come within 3 days
LAST RAINSept. 201.07 in · 9 dry days
ALERTS & OUTLOOKS
No watches or warnings for Washington County
NWS Milwaukee/Sullivan and the Storm Prediction Center · checked 2:53 PM
SUN & MOON
↑ 6:48 AM6:39 PM ↓
11 h 50 m of daylight, 3 minutes less than yesterday
Waning gibbous, 89% lit. The Harvest Moon was full Saturday.
AIR & POLLEN
40
GOODAir quality index · ozone
Tomorrow: None, moderate. No pollen source yet.

The next three days, hour by hour

Sky: clear, cloudy, night Rain likely National Blend of Models
TUESDAY, SEPT. 29
WEDNESDAY, SEPT. 30
THURSDAY, OCT. 1
FRIDAY, OCT. 2
2p
5p
8p
11p
2a
5a
8a
11a
2p
5p
8p
11p
2a
5a
8a
11a
2p
5p
8p
11p
2a
5a
8a
11a
partly cloudy day
mostly cloudy day
mostly cloudy night
mostly cloudy night
mostly cloudy night
rain
rain
rain
rain
rain
rain
rain
rain
rain
rain
rain
rain
rain
rain
rain
rain
rain
partly cloudy day
mostly sunny
TEMPERATURE °F
70°
59°
66°
63°
67°
52°
CHANCE OF RAIN
73% · 1.54 in Thursday overnight 50%
WIND, MPH
10
10
10
9
9
9
12
14
13
11
9
7
6
5
5
7
8
8
8
9
11
12
13
13
HOW IT FEELS · DEW POINT
Comfortable: dew points 48 to 64° Drier: 48° by Friday

The next seven days, and how sure we are

Forecast, with the range 8 in 10 ensemble members agree on Normal, about 68° / 51°
TUE Sept. 29 Partly cloudy Partly cloudy
70° 59°
0% rain — S 11 A
WED Sept. 30 Showers likely Showers likely
68° 62°
60% rain 0.6–2.0″ SSW 12 B
THU Oct. 1 Showers likely Showers likely
67° 52°
70% rain 0.4–2.2″ N 7 B
FRI Oct. 2 Mostly sunny Mostly sunny
62° 48°
10% rain — NNE 9 B
SAT Oct. 3 Partly cloudy Partly cloudy
60° 47°
10% rain — SSE 6 B
SUN Oct. 4 Mostly sunny Mostly sunny
62° 45°
0% rain — NNW 8 C
MON Oct. 5 Mostly sunny Mostly sunny
58° 45°
0% rain — E 6 C
How sure are we? AModels agree: highs within 4° BSome spread: within 8° CWide spread: check back
Range from the National Blend of Models percentiles · graded on Forecast Scores
AIR MAIL

Where today’s air came from

MILE7
ON THE NETWORK

Around Erin on the Forecast Network

Neighboring plates

Waukesha WI · 17 MI 17 miles south Milwaukee WI · 23 MI 23 miles southeast Madison WI · 55 MI 55 miles west Aurora IL · 102 MI 102 miles south Chicago IL · 103 MI 103 miles south Grand Rapids MI · 138 MI 138 miles east
FORECASTCITY
Atlas plate of Erin, Wisconsin. Explore the plate
WISCONSIN · WASHINGTON

Erin

3,816 people, in Washington County.

3,816People
36 sq miLand
Sunny 69°
SunnyDew point 61°
1

Today in Erin

NEXT 15 HOURS
Now partly cloudy day 70° 0%
5p mostly cloudy day 68° 0%
8p mostly cloudy night 64° 3%
11p mostly cloudy night 63° 4%
2a mostly cloudy night 62° 28%
5a rain 60° 45%
Mostly cloudy
NEXT RAINTomorrow about 4 AM · 63%
→
Tue0%
Partly cloudy Partly cloudy
59
70
A
Wed60%
Showers likely Showers likely
62
68
B
Thu70%
Showers likely Showers likely
52
67
B
Fri10%
Mostly sunny Mostly sunny
48
62
B
Sat10%
Partly cloudy Partly cloudy
47
60
B
Sun0%
Mostly sunny Mostly sunny
45
62
C
Mon0%
Mostly sunny Mostly sunny
45
58
C
Letters show how sure the forecast is: A, models agree; B, some spread; C, check back. Sample data.
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