Janesville, IA Weather Forecast

Local 7-day forecast

54°

Sunny

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

Sunday, April 19, 2026

Wind: 7 to 16 mph NW

Sunday

Sunny, with a high near 54.

Local 7-day forecast

Local Weather Overview

This forecast page for Janesville, IA 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: Apr 16, 2026 8:59 AM CDT.

The active forecast window currently covers Apr 19 to Apr 22, 2026 for Janesville, IA.

Page Snapshot

Page focus: city weather
Forecast window: Apr 19 to Apr 22, 2026
Latest sync: Apr 16, 2026 8:59 AM CDT
Forecast office: DMX
Source: NOAA / NWS

Next High

54°F

Sunday

Next Low

33°F

Sunday Night

Rain Outlook

Periods mentioning precipitation

Windiest

8 to 18 mph

Monday

Daily Outlook

Today

Apr 19

Sunny

54 °F

/ 33°F

Wind 7 to 16 mph

Mon

Apr 20

Sunny

65 °F

/ 48°F

Wind 8 to 18 mph

Tue

Apr 21

Sunny

72 °F

/ 48°F

Wind 12 to 16 mph

Wed

Apr 22

Sunny

71 °F

/ 50°F

Wind 9 to 15 mph

This Week in Janesville

Tuesday looks like the warmest upcoming period in Janesville at 72 degrees F.

Sunday Night is the coolest period ahead with temperatures near 33 degrees F.

The strongest winds are forecast for Monday at about 8 to 18 mph SSE.

Precipitation is mentioned in 1 upcoming forecast period.

Forecast Details

Last updated: Apr 16, 2026 8:59 AM CDT
Coverage: 4 days
Time zone: America/Chicago
Forecast office: DMX
Radar station: KDMX

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

Open NOAA source

Extended Forecast

Sunday Night

Apr 19

33°F

Mostly Clear

7 to 12 mph ENE

Mostly clear, with a low around 33.

Monday

Apr 20

65°F

Sunny

8 to 18 mph SSE

Sunny, with a high near 65.

Monday Night

Apr 20

48°F

Partly Cloudy

13 to 16 mph SSW

Partly cloudy, with a low around 48.

Tuesday

Apr 21

72°F

Sunny

12 to 16 mph SW

Sunny, with a high near 72.

Tuesday Night

Apr 21

48°F

Mostly Clear

9 to 14 mph SSW

Mostly clear, with a low around 48.

Wednesday

Apr 22

71°F

Sunny

9 to 15 mph S

Sunny, with a high near 71.

Wednesday Night

Apr 22

50°F

Chance Rain Showers

14 mph SE

A chance of rain showers after 7pm. Partly cloudy, with a low around 50.

Detailed Forecast

Period	Conditions	Temp	Wind	Details
Sunday Apr 19	Sunny	54°F	7 to 16 mph NW	Sunny, with a high near 54.
Sunday Night Apr 19	Mostly Clear	33°F	7 to 12 mph ENE	Mostly clear, with a low around 33.
Monday Apr 20	Sunny	65°F	8 to 18 mph SSE	Sunny, with a high near 65.
Monday Night Apr 20	Partly Cloudy	48°F	13 to 16 mph SSW	Partly cloudy, with a low around 48.
Tuesday Apr 21	Sunny	72°F	12 to 16 mph SW	Sunny, with a high near 72.
Tuesday Night Apr 21	Mostly Clear	48°F	9 to 14 mph SSW	Mostly clear, with a low around 48.
Wednesday Apr 22	Sunny	71°F	9 to 15 mph S	Sunny, with a high near 71.
Wednesday Night Apr 22	Chance Rain Showers	50°F	14 mph SE	A chance of rain showers after 7pm. Partly cloudy, with a low around 50.

Nearby Forecasts

Explore weather pages for nearby cities and major places around Janesville.

Region Links

Bremer County weather

County forecast page

Iowa weather

Statewide weather overview

United States weather

National weather entry point

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