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

Union

2,105 people, in Rock County.

2,105People, 2024 estimate
33 sq miLand area
Sunny 75°
Sunny now Dew point 52° · SW 10 mph · high 73°
City of Union River Interstate 2 miles
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The Union 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 Union

NWS forecast and National Blend of Models · updated 1:00 PM CDT
RIGHT NOW Janesville-Rock County (KJVL) · 1:45 PM
Sunny
75° Sunny Feels like 75° · high of 73° near 2 PM
WindSW 10 mphno gusts
Humidity44%falling to 51% this afternoon
Pressure29.97 in →steady
Visibility10 mihaze-free
CloudsClear
UV index—no forecast
Dew point 52° · Dry66° by Wednesday: more humid
DryComfortableStickyMuggyOppressive
NEXT RAIN
Rain
Tomorrow, about 4 AMin about 14 hours · 62% chance · rain
LIKELY AMOUNT—amounts come within 3 days
LAST RAINSept. 230.37 in · 6 dry days
ALERTS & OUTLOOKS
No watches or warnings for Rock County
NWS Milwaukee/Sullivan and the Storm Prediction Center · checked 2:22 PM
SUN & MOON
↑ 6:52 AM6:43 PM ↓
11 h 50 m of daylight, 3 minutes less than yesterday
Waning gibbous, 89% lit. The Harvest Moon was full Saturday.
AIR & POLLEN
37
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
mostly cloudy day
rain
rain
rain
rain
rain
rain
rain
rain
rain
rain
rain
rain
rain
showers night
partly cloudy day
mostly sunny
TEMPERATURE °F
73°
60°
68°
64°
66°
50°
CHANCE OF RAIN
84% · 1.67 in Thursday morning 50%
WIND, MPH
10
9
9
9
8
10
10
12
12
10
7
4
1
0
2
6
8
9
8
7
8
9
10
10
HOW IT FEELS · DEW POINT
Comfortable: dew points 49 to 66°

The next seven days, and how sure we are

Forecast, with the range 8 in 10 ensemble members agree on Normal, about 70° / 46°
TUE Sept. 29 Partly cloudy Partly cloudy
73° 60°
10% rain — S 9 A
WED Sept. 30 Showers likely Showers likely
69° 63°
70% rain 0.8–1.8″ SSW 11 B
THU Oct. 1 Showers likely Showers likely
68° 50°
80% rain 0.6–2.7″ N 5 B
FRI Oct. 2 Mostly sunny Mostly sunny
65° 43°
0% rain — NNE 7 B
SAT Oct. 3 Partly cloudy Partly cloudy
65° 45°
10% rain — SSE 7 B
SUN Oct. 4 Mostly sunny Mostly sunny
65° 40°
0% rain — NNW 7 B
MON Oct. 5 Mostly sunny Mostly sunny
61° 41°
0% rain — E 3 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 Union on the Forecast Network

Neighboring plates

Madison WI · 20 MI 20 miles north Rockford IL · 40 MI 40 miles south Milwaukee WI · 70 MI 70 miles east Aurora IL · 89 MI 89 miles southeast Chicago IL · 107 MI 107 miles southeast Grand Rapids MI · 185 MI 185 miles east
FORECASTCITY
Atlas plate of Union, Wisconsin. Explore the plate
WISCONSIN · ROCK

Union

2,105 people, in Rock County.

2,105People
33 sq miLand
Sunny 75°
SunnyDew point 52°
1

Today in Union

NEXT 15 HOURS
Now partly cloudy day 73° 0%
5p mostly cloudy day 71° 0%
8p mostly cloudy night 65° 2%
11p mostly cloudy night 64° 8%
2a mostly cloudy night 63° 21%
5a rain 61° 41%
Rain
NEXT RAINTomorrow about 4 AM · 62%
→
Tue10%
Partly cloudy Partly cloudy
60
73
A
Wed70%
Showers likely Showers likely
63
69
B
Thu80%
Showers likely Showers likely
50
68
B
Fri0%
Mostly sunny Mostly sunny
43
65
B
Sat10%
Partly cloudy Partly cloudy
45
65
B
Sun0%
Mostly sunny Mostly sunny
40
65
B
Mon0%
Mostly sunny Mostly sunny
41
61
C
Letters show how sure the forecast is: A, models agree; B, some spread; C, check back. Sample data.
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