What is the weather in Janesville right now?

Current weather in Janesville is broken clouds.

Where can I find the hourly weather forecast for Janesville?

This page shows hourly weather forecast for Janesville, including temperature, wind, precipitation, humidity and cloud cover.

Is the weather forecast for Janesville updated regularly?

Weather data for Janesville is updated regularly with the latest available observations and forecasts.

Now · 2:25 AM

Janesville Weather & Hourly Forecast

United States · California · 96114

55°F

Mostly cloudy night

Feels like: 53°F

💧 Humidity 54% 🌡 Pressure 30.00 inHg 💨 Wind 6 mph 👁 Visibility 6.2 mi ☁ Clouds 71% ☀️ UV index 0.0 · Low 🌅 Sunrise 6:31 AM 🌇 Sunset 7:31 PM

Hourly Forecast for Janesville

Today

3:00 AM

Mostly cloudy night

55° 💧 None 💨 6 mph H 54%30.00 inHg

6:00 AM

Overcast night

54° 💧 None 💨 5 mph H 66%29.94 inHg

9:00 AM

Overcast

57° 💧 None 💨 6 mph H 69%29.91 inHg

12:00 PM

Overcast

61° 💧 None 💨 9 mph H 61%29.85 inHg

3:00 PM

Mostly cloudy

60° 💧 0.03 in 💨 9 mph H 68%29.80 inHg

6:00 PM

Light rain

57° 💧 0.09 in 💨 3 mph H 90%29.80 inHg

9:00 PM

Light rain

60° 💧 0.04 in 💨 3 mph H 91%29.80 inHg

Tomorrow

12:00 AM

Light rain

61° 💧 0.03 in 💨 3 mph H 90%29.83 inHg

3:00 AM

Mostly cloudy night

60° 💧 0.01 in 💨 2 mph H 90%29.83 inHg

6:00 AM

Overcast night

57° 💧 0.01 in 💨 3 mph H 89%29.85 inHg

9:00 AM

Overcast

59° 💧 None 💨 4 mph H 71%29.85 inHg

12:00 PM

Overcast

64° 💧 None 💨 10 mph H 56%29.88 inHg

3:00 PM

Partly cloudy

67° 💧 None 💨 14 mph H 36%29.83 inHg

6:00 PM

Sunny

63° 💧 None 💨 12 mph H 34%29.83 inHg

9:00 PM

Clear night

51° 💧 None 💨 5 mph H 64%29.94 inHg

Saturday

12:00 AM

Clear night

48° 💧 None 💨 4 mph H 76%29.97 inHg

Today

3:00 AM

Mostly cloudy night

55° 💧 None 💨 6 mph H 54%30.00 inHg

4:00 AM

Mostly cloudy night

56° 💧 None 💨 5 mph H 58%29.97 inHg

5:00 AM

Mostly cloudy night

56° 💧 None 💨 5 mph H 61%29.97 inHg

6:00 AM

Overcast night

54° 💧 None 💨 5 mph H 66%29.94 inHg

7:00 AM

Overcast

53° 💧 None 💨 5 mph H 69%29.91 inHg

8:00 AM

Overcast

55° 💧 None 💨 5 mph H 74%29.91 inHg

9:00 AM

Overcast

57° 💧 None 💨 6 mph H 69%29.91 inHg

10:00 AM

Overcast

60° 💧 None 💨 6 mph H 68%29.91 inHg

11:00 AM

Overcast

63° 💧 None 💨 6 mph H 63%29.88 inHg

12:00 PM

Overcast

61° 💧 None 💨 9 mph H 61%29.85 inHg

1:00 PM

Mostly cloudy

62° 💧 None 💨 10 mph H 56%29.83 inHg

2:00 PM

Mostly cloudy

62° 💧 None 💨 11 mph H 56%29.83 inHg

3:00 PM

Mostly cloudy

60° 💧 None 💨 9 mph H 68%29.80 inHg

4:00 PM

Light rain

58° 💧 0.01 in 💨 4 mph H 79%29.77 inHg

5:00 PM

Light rain

59° 💧 0.02 in 💨 3 mph H 86%29.77 inHg

6:00 PM

Light rain

57° 💧 0.02 in 💨 3 mph H 90%29.80 inHg

7:00 PM

Moderate rain

56° 💧 0.04 in 💨 2 mph H 93%29.80 inHg

8:00 PM

Light rain

59° 💧 0.03 in 💨 3 mph H 89%29.77 inHg

9:00 PM

Light rain

60° 💧 0.03 in 💨 3 mph H 91%29.80 inHg

10:00 PM

Light rain

61° 💧 0.01 in 💨 3 mph H 93%29.83 inHg

11:00 PM

Light rain

62° 💧 0.01 in 💨 2 mph H 90%29.80 inHg

Tomorrow

12:00 AM

Light rain

61° 💧 0.02 in 💨 3 mph H 90%29.83 inHg

1:00 AM

Light rain

61° 💧 0.01 in 💨 3 mph H 89%29.83 inHg

2:00 AM

Mostly cloudy night

60° 💧 None 💨 3 mph H 93%29.83 inHg

3:00 AM

Mostly cloudy night

60° 💧 None 💨 2 mph H 90%29.83 inHg

4:00 AM

Overcast night

60° 💧 None 💨 3 mph H 89%29.83 inHg

5:00 AM

Light rain

61° 💧 0.01 in 💨 3 mph H 90%29.83 inHg

6:00 AM

Overcast night

57° 💧 None 💨 3 mph H 89%29.85 inHg

7:00 AM

Light rain

56° 💧 0.01 in 💨 3 mph H 88%29.85 inHg

8:00 AM

Overcast

57° 💧 None 💨 3 mph H 84%29.88 inHg

9:00 AM

Overcast

59° 💧 None 💨 4 mph H 71%29.85 inHg

10:00 AM

Overcast

61° 💧 None 💨 6 mph H 64%29.85 inHg

11:00 AM

Overcast

65° 💧 None 💨 9 mph H 57%29.88 inHg

12:00 PM

Overcast

64° 💧 None 💨 10 mph H 56%29.88 inHg

1:00 PM

Mostly cloudy

67° 💧 None 💨 11 mph H 44%29.85 inHg

2:00 PM

Partly cloudy

67° 💧 None 💨 14 mph H 40%29.85 inHg

3:00 PM

Partly cloudy

67° 💧 None 💨 14 mph H 36%29.83 inHg

4:00 PM

Mostly sunny

66° 💧 None 💨 13 mph H 32%29.83 inHg

5:00 PM

Mostly sunny

69° 💧 None 💨 13 mph H 32%29.83 inHg

6:00 PM

Sunny

63° 💧 None 💨 12 mph H 34%29.83 inHg

7:00 PM

Sunny

59° 💧 None 💨 9 mph H 41%29.85 inHg

8:00 PM

Clear night

53° 💧 None 💨 6 mph H 54%29.91 inHg

9:00 PM

Clear night

51° 💧 None 💨 5 mph H 64%29.94 inHg

10:00 PM

Clear night

50° 💧 None 💨 5 mph H 70%29.97 inHg

11:00 PM

Clear night

49° 💧 None 💨 5 mph H 73%29.97 inHg

Saturday

12:00 AM

Clear night

48° 💧 None 💨 4 mph H 76%29.97 inHg

1:00 AM

Clear night

47° 💧 None 💨 4 mph H 78%30.00 inHg

2:00 AM

Clear night

46° 💧 None 💨 3 mph H 80%30.00 inHg

3:00 AM

Clear night

45° 💧 None 💨 3 mph H 81%30.00 inHg

4:00 AM

Clear night

45° 💧 None 💨 4 mph H 81%30.00 inHg

5:00 AM

Clear night

44° 💧 None 💨 3 mph H 82%30.00 inHg

6:00 AM

Clear night

44° 💧 None 💨 3 mph H 83%30.03 inHg

7:00 AM

Sunny

45° 💧 None 💨 2 mph H 81%30.03 inHg

8:00 AM

Sunny

51° 💧 None 💨 0 mph H 64%30.03 inHg

9:00 AM

Sunny

56° 💧 None 💨 2 mph H 54%30.00 inHg

10:00 AM

Sunny

60° 💧 None 💨 3 mph H 46%29.97 inHg

11:00 AM

Mostly sunny

65° 💧 None 💨 3 mph H 40%29.94 inHg

12:00 PM

Mostly cloudy

67° 💧 None 💨 5 mph H 38%29.91 inHg

1:00 PM

Mostly cloudy

67° 💧 None 💨 9 mph H 37%29.91 inHg

2:00 PM

Mostly cloudy

71° 💧 None 💨 11 mph H 29%29.88 inHg

3:00 PM

Mostly cloudy

72° 💧 None 💨 14 mph H 27%29.85 inHg

4:00 PM

Mostly cloudy

72° 💧 None 💨 14 mph H 26%29.83 inHg

5:00 PM

Mostly cloudy

71° 💧 None 💨 16 mph H 27%29.83 inHg

6:00 PM

Overcast

69° 💧 None 💨 15 mph H 30%29.85 inHg

7:00 PM

Overcast

65° 💧 None 💨 9 mph H 38%29.88 inHg

8:00 PM

Overcast night

59° 💧 None 💨 6 mph H 48%29.91 inHg

9:00 PM

Overcast night

58° 💧 None 💨 4 mph H 51%29.94 inHg

10:00 PM

Overcast night

57° 💧 None 💨 5 mph H 53%29.94 inHg

11:00 PM

Overcast night

55° 💧 None 💨 6 mph H 60%29.97 inHg

Sunday

12:00 AM

Clear night

52° 💧 None 💨 5 mph H 67%29.97 inHg

1:00 AM

Clear night

51° 💧 None 💨 5 mph H 71%30.00 inHg

2:00 AM

Clear night

50° 💧 None 💨 5 mph H 74%30.00 inHg

3:00 AM

Clear night

49° 💧 None 💨 5 mph H 76%30.00 inHg

4:00 AM

Clear night

48° 💧 None 💨 4 mph H 78%30.00 inHg

5:00 AM

Clear night

47° 💧 None 💨 4 mph H 77%29.97 inHg

6:00 AM

Clear night

47° 💧 None 💨 4 mph H 76%30.00 inHg

7:00 AM

Sunny

48° 💧 None 💨 3 mph H 73%30.00 inHg

8:00 AM

Sunny

54° 💧 None 💨 2 mph H 57%30.00 inHg

9:00 AM

Sunny

60° 💧 None 💨 0 mph H 46%29.97 inHg

10:00 AM

Sunny

65° 💧 None 💨 2 mph H 37%29.91 inHg

11:00 AM

Sunny

68° 💧 None 💨 5 mph H 30%29.91 inHg

12:00 PM

Sunny

71° 💧 None 💨 9 mph H 25%29.85 inHg

1:00 PM

Sunny

73° 💧 None 💨 13 mph H 22%29.85 inHg

2:00 PM

Sunny

74° 💧 None 💨 16 mph H 20%29.83 inHg

3:00 PM

Sunny

73° 💧 None 💨 18 mph H 21%29.83 inHg

4:00 PM

Sunny

72° 💧 None 💨 18 mph H 21%29.83 inHg

5:00 PM

Sunny

70° 💧 None 💨 17 mph H 23%29.83 inHg

6:00 PM

Sunny

68° 💧 None 💨 16 mph H 25%29.83 inHg

7:00 PM

Sunny

63° 💧 None 💨 12 mph H 31%29.85 inHg

8:00 PM

Clear night

57° 💧 None 💨 7 mph H 40%29.91 inHg

9:00 PM

Clear night

55° 💧 None 💨 6 mph H 44%29.94 inHg

10:00 PM

Clear night

54° 💧 None 💨 6 mph H 46%29.97 inHg

11:00 PM

Clear night

52° 💧 None 💨 5 mph H 48%29.97 inHg

Monday

12:00 AM

Clear night

51° 💧 None 💨 5 mph H 49%30.00 inHg

1:00 AM

Clear night

50° 💧 None 💨 4 mph H 50%30.00 inHg

2:00 AM

Clear night

49° 💧 None 💨 4 mph H 52%30.00 inHg

In Janesville and, more broadly, across the state of California: Clear skies will persist into the evening, with temperatures remaining mild to warm, ranging from 73 to 81 degrees Fahrenheit. Winds will be moderate from the northwest, reaching up to 15 mph, with gusts up to 29 mph. No precipitation is expected during this time. Conditions will be relatively calm, making for a pleasant evening. Temperatures are likely to gradually cool as the night progresses, but it should stay dry and comfortable throughout the next few hours.

15-Day Weather Outlook for Janesville

Thursday, Sep 3Thu Sep 3

Moderate rain 62°/54° 💧 0.26 in 💨 8 mph

TomorrowTomorrow

Light rain 66°/50° 💧 0.04 in 💨 15 mph

Saturday, Sep 5Sat Sep 5

Mostly cloudy 73°/44° 💧 None 💨 17 mph

Sunday, Sep 6Sun Sep 6

Mostly cloudy 74°/47° 💧 None 💨 16 mph

Monday, Sep 7Mon Sep 7

Sunny 77°/48° 💧 None 💨 5 mph

Tuesday, Sep 8Tue Sep 8

Overcast 72°/55° 💧 None 💨 13 mph

Wednesday, Sep 9Wed Sep 9

Sunny 76°/49° 💧 None 💨 15 mph

Thursday, Sep 10Thu Sep 10

Light rain 69°/51° 💧 0.06 in 💨 7 mph

Friday, Sep 11Fri Sep 11

Sunny 76°/50° 💧 None 💨 13 mph

Saturday, Sep 12Sat Sep 12

Mostly sunny 77°/55° 💧 None 💨 6 mph

Sunday, Sep 13Sun Sep 13

Partly cloudy 81°/56° 💧 None 💨 11 mph

Monday, Sep 14Mon Sep 14

Overcast 86°/63° 💧 None 💨 11 mph

Tuesday, Sep 15Tue Sep 15

Overcast 86°/63° 💧 None 💨 9 mph

Wednesday, Sep 16Wed Sep 16

Sunny 85°/59° 💧 None 💨 13 mph

Thursday, Sep 17Thu Sep 17

Sunny 88°/63° 💧 None 💨 11 mph

TEMPERATURE OUTLOOK

Temperature & Weather Trends in Janesville

Vertical axis: °F · Color based on temperature

AIR QUALITY FORECAST

Air Quality Forecast for Janesville

Hourly forecast · Updated every 2 hours

Fair

Nearest forecast value 3:00 AM

PM2.5 Fine particles Good 2,4µg/m³

Microscopic particles that can penetrate deep into the lungs. Elevated concentrations can especially affect children, older adults and people with respiratory conditions.

PM10 Particulate matter Good 4,6µg/m³

Includes dust, pollen and other airborne particles. High concentrations may irritate the respiratory system.

O₃ Ozone Fair 68,6µg/m³

Ground-level ozone can irritate the eyes and respiratory system when concentrations are elevated.

NO₂ Nitrogen dioxide Good 3,5µg/m³

A gas emitted mainly by traffic and some industrial activity. High exposure can affect respiratory health.

Air quality is acceptable for most people.

UV & HEALTH

UV, Sun & Health Outlook in Janesville

Maximum daily UV Today, tomorrow and the following day show the maximum UV index forecast for each day.

0–2 Low 3–5 Moderate 6–7 High 8–10 Very high 11+ Extreme

Today UV 1,4Low 🙂Fair

Tomorrow UV 7,5High 🙂Fair

Saturday UV 7,3High 🙂Fair

Sunday UV 6,4High 🙂Fair

Monday UV 6,0High 😊Good

Tuesday UV 6,0High —Unavailable

Wednesday UV 6,0High —Unavailable

Hourly UV index today

7:00 AMUV 0,0 8:00 AMUV 0,1 9:00 AMUV 0,2 10:00 AMUV 0,4 11:00 AMUV 0,7 12:00 PMUV 1,1 1:00 PMUV 1,4 2:00 PMUV 1,1 3:00 PMUV 0,7 4:00 PMUV 0,5 5:00 PMUV 0,2 6:00 PMUV 0,0

Today's weather health advice Open today's recommendations.

Low UV risk

UV radiation will be low, although basic protection is still advisable during prolonged exposure.

Acceptable air quality

Air quality is acceptable for most people. Very sensitive people may want to reduce prolonged exertion.

Comfortable temperature conditions

Temperatures should feel comfortable for most people, with no particular heat or cold precautions needed.

Good conditions for outdoor activities

Outdoor activities can generally be enjoyed normally, with sun protection adjusted to the UV level.

WIND OUTLOOK

Hourly Wind Forecast for Janesville

Vertical axis: mph · Horizontal axis: hours

Sustained wind Max gusts

Internal PR simulation: 3.77 Population: 2,399

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Forecast data for Janesville were last refreshed today at 2:10 AM. The current forecast period extends through 05/09/2026 at 12:00 AM. Weather, air-quality and UV-index data are provided through WEATHER-INFO.COM. Forecasts are produced automatically from the latest available data and are subject to periodic technical checks. This service is intended for general weather information.