Eureka, WI Weather Forecast

Local 7-day forecast

86°

Patchy Smoke

Track current conditions, temperature changes, wind, and the full daily outlook for Eureka, WI in one place.

Saturday, July 18, 2026

Wind: 12 mph N

This Afternoon

Patchy smoke. Mostly sunny, with a high near 86. Heat index values as high as 87. North wind around 12 mph, with gusts as high as 18 mph.

Local 7-day forecast

Local Weather Overview

This forecast page for Eureka, WI is designed for quick trip planning, giving you a clean read on daytime highs, overnight lows, and changing conditions across the upcoming forecast window. Latest sync: Jul 18, 2026 4:25 PM CDT.

The active forecast window currently covers Jul 18 to Jul 24, 2026 for Eureka, WI.

Page Snapshot

Page focus: city weather
Forecast window: Jul 18 to Jul 24, 2026
Latest sync: Jul 18, 2026 4:25 PM CDT
Forecast office: GRB
Source: NOAA / NWS

Next High

86°F

This Afternoon

Next Low

60°F

Tonight

Rain Outlook

Periods mentioning precipitation

Windiest

8 to 16 mph

Monday

Daily Outlook

Today

Jul 18

Patchy Smoke

86 °F

/ 60°F

Wind 12 mph

Sun

Jul 19

Areas Of Smoke

83 °F

/ 63°F

Wind 0 to 6 mph

Mon

Jul 20

Patchy Smoke

86 °F

/ 66°F

Wind 8 to 16 mph

Tue

Jul 21

Mostly Sunny then Slight Chance Showers And Thunderstorms

82 °F

/ 55°F

Wind 12 to 16 mph

Wed

Jul 22

Sunny

78 °F

/ 56°F

Wind 8 mph

Thu

Jul 23

Sunny

82 °F

/ 60°F

Wind 3 to 8 mph

Fri

Jul 24

Slight Chance Showers And Thunderstorms

83 °F

/ 61°F

Wind 5 to 9 mph

This Week in Eureka

This Afternoon looks like the warmest upcoming period in Eureka at 86 degrees F.

Tuesday Night is the coolest period ahead with temperatures near 55 degrees F.

The strongest winds are forecast for Monday at about 8 to 16 mph SSW.

Precipitation is mentioned in 7 upcoming forecast periods.

Forecast Details

Last updated: Jul 18, 2026 4:25 PM CDT
Coverage: 7 days
Time zone: America/Chicago
Forecast office: GRB
Radar station: KGRB

Weather data is provided by the National Weather Service and refreshed automatically for U.S. locations.

Open NOAA source

Extended Forecast

Tonight

Jul 18

60°F

Areas Of Smoke

1 to 10 mph ENE

Areas of smoke. Partly cloudy, with a low around 60. East northeast wind 1 to 10 mph.

Sunday

Jul 19

83°F

Areas Of Smoke

0 to 6 mph SE

Areas of smoke. Mostly sunny, with a high near 83. Heat index values as high as 83. Southeast wind 0 to 6 mph.

Sunday Night

Jul 19

63°F

Areas Of Smoke

5 to 8 mph S

Areas of smoke. Partly cloudy, with a low around 63. South wind 5 to 8 mph.

Monday

Jul 20

86°F

Patchy Smoke

8 to 16 mph SSW

Areas of smoke and a slight chance of rain showers before 7am, then a chance of rain showers and patchy smoke between 7am and 10am, then patchy smoke and showers and thunderstorms likely between 10am and 4pm, then patchy smoke and showers and thunderstorms likely. Partly sunny, with a high near 86. South southwest wind 8 to 16 mph, with gusts as high as 28 mph. Chance of precipitation is 60%.

Monday Night

Jul 20

66°F

Patchy Smoke

10 to 15 mph WSW

Patchy smoke and showers and thunderstorms likely before 1am. Mostly cloudy, with a low around 66. Chance of precipitation is 60%.

Tuesday

Jul 21

82°F

Mostly Sunny then Slight Chance Showers And Thunderstorms

12 to 16 mph NW

A slight chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 82. Chance of precipitation is 20%.

Tuesday Night

Jul 21

55°F

Slight Chance Showers And Thunderstorms then Mostly Clear

6 to 14 mph NNW

A slight chance of showers and thunderstorms before 7pm. Mostly clear, with a low around 55. Chance of precipitation is 20%.

Wednesday

Jul 22

78°F

Sunny

8 mph NNW

Sunny, with a high near 78.

Wednesday Night

Jul 22

56°F

Mostly Clear

2 to 7 mph W

Mostly clear, with a low around 56.

Thursday

Jul 23

82°F

Sunny

3 to 8 mph SW

Sunny, with a high near 82.

Thursday Night

Jul 23

60°F

Slight Chance Rain Showers then Slight Chance Showers And Thunderstorms

5 to 8 mph SSW

A slight chance of rain showers between 7pm and 1am, then a slight chance of showers and thunderstorms. Partly cloudy, with a low around 60. Chance of precipitation is 20%.

Friday

Jul 24

83°F

Slight Chance Showers And Thunderstorms

5 to 9 mph SSW

A slight chance of showers and thunderstorms before 1pm, then a chance of showers and thunderstorms. Mostly sunny, with a high near 83. Chance of precipitation is 30%.

Friday Night

Jul 24

61°F

Chance Showers And Thunderstorms then Partly Cloudy

3 to 8 mph S

A chance of showers and thunderstorms before 7pm. Partly cloudy, with a low around 61. Chance of precipitation is 30%.

Detailed Forecast

Period	Conditions	Temp	Wind	Details
This Afternoon Jul 18	Patchy Smoke	86°F	12 mph N	Patchy smoke. Mostly sunny, with a high near 86. Heat index values as high as 87. North wind around 12 mph, with gusts a...
Tonight Jul 18	Areas Of Smoke	60°F	1 to 10 mph ENE	Areas of smoke. Partly cloudy, with a low around 60. East northeast wind 1 to 10 mph.
Sunday Jul 19	Areas Of Smoke	83°F	0 to 6 mph SE	Areas of smoke. Mostly sunny, with a high near 83. Heat index values as high as 83. Southeast wind 0 to 6 mph.
Sunday Night Jul 19	Areas Of Smoke	63°F	5 to 8 mph S	Areas of smoke. Partly cloudy, with a low around 63. South wind 5 to 8 mph.
Monday Jul 20	Patchy Smoke	86°F	8 to 16 mph SSW	Areas of smoke and a slight chance of rain showers before 7am, then a chance of rain showers and patchy smoke between 7a...
Monday Night Jul 20	Patchy Smoke	66°F	10 to 15 mph WSW	Patchy smoke and showers and thunderstorms likely before 1am. Mostly cloudy, with a low around 66. Chance of precipitati...
Tuesday Jul 21	Mostly Sunny then Slight Chance Showers And Thunderstorms	82°F	12 to 16 mph NW	A slight chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 82. Chance of precipitation is 20...
Tuesday Night Jul 21	Slight Chance Showers And Thunderstorms then Mostly Clear	55°F	6 to 14 mph NNW	A slight chance of showers and thunderstorms before 7pm. Mostly clear, with a low around 55. Chance of precipitation is...
Wednesday Jul 22	Sunny	78°F	8 mph NNW	Sunny, with a high near 78.
Wednesday Night Jul 22	Mostly Clear	56°F	2 to 7 mph W	Mostly clear, with a low around 56.
Thursday Jul 23	Sunny	82°F	3 to 8 mph SW	Sunny, with a high near 82.
Thursday Night Jul 23	Slight Chance Rain Showers then Slight Chance Showers And Thunderstorms	60°F	5 to 8 mph SSW	A slight chance of rain showers between 7pm and 1am, then a slight chance of showers and thunderstorms. Partly cloudy, w...
Friday Jul 24	Slight Chance Showers And Thunderstorms	83°F	5 to 9 mph SSW	A slight chance of showers and thunderstorms before 1pm, then a chance of showers and thunderstorms. Mostly sunny, with...
Friday Night Jul 24	Chance Showers And Thunderstorms then Partly Cloudy	61°F	3 to 8 mph S	A chance of showers and thunderstorms before 7pm. Partly cloudy, with a low around 61. Chance of precipitation is 30%.

Nearby Forecasts

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Weather data provided by the National Weather Service (NOAA). Forecast pages update automatically as new periods are synced for each supported U.S. location.