How is the weather in Janesville, CA?

At 2:55 AM on Mon, Sep 15, 2025 it is clear and 43 degrees Fahrenheit, feeling like 42 degrees.

Janesville, CA Weather Forecast and Current Conditions (96114)

43°F
Feels Like 42°F

Humidity 81% Dew Point 37°F Wind SW 3 MPH Barometer 30.1 in.764.5 mm

Solar Rad 0 w/m2 Visibility 10 mi.

Report from 5.3 miles NNW of central Janesville at 2:55 AM Mon, Sep 15, 2025

Current Weather

43°F
Feels Like 42°F

Humidity 81% Dew Point 37°F Wind SW 3 MPH Barometer 30.1 in.764.5 mm

Solar Rad 0 w/m2 Visibility 10 mi.

Report from 5.3 miles NNW of central Janesville at 2:55 AM Mon, Sep 15, 2025

Forecast at a Glance

MonSep 15

81°

48°

TueSep 16

84°

52°

WedSep 17

87°

54°

ThuSep 18

10%

85°

55°

FriSep 19

30%

82°

53°

SatSep 20

30%

79°

51°

SunSep 21

20%

79°

This Date in Weather History

1939 - The temperature at Detroit MI soared to 100 degrees to establish a record for September.

Janesville 7 Day Weather Forecast Details

Monday Sep 15

Day: Sunny, with a high near 81. South wind 0 to 5 mph.

Night: Mostly clear, with a low around 48. Southwest wind 0 to 5 mph.

Tuesday Sep 16

Day: Sunny, with a high near 84. East wind 0 to 5 mph.

Night: Clear, with a low around 52. Southwest wind 0 to 5 mph.

Wednesday Sep 17

Day: Sunny, with a high near 87. Northeast wind 0 to 5 mph.

Night: Mostly clear, with a low around 54.

Thursday Sep 18

Day: Partly sunny, with a high near 85.

Night: Mostly cloudy, with a low around 55.

Friday Sep 19

Day: A chance of rain showers after 11am. Partly sunny, with a high near 82.

Night: A chance of rain showers. Partly cloudy, with a low around 53.

Saturday Sep 20

Day: A chance of rain showers. Mostly sunny, with a high near 79.

Night: A slight chance of rain showers before 11pm. Partly cloudy, with a low around 51.

Sunday Sep 21

Day: A slight chance of rain showers between 11am and 5pm. Mostly sunny, with a high near 79.

Sun & Moon Monthly

First Light 6:17 AM

Sunrise 6:44 AM

Sunset 7:12 PM

Last Light 7:40 PM

Moonrise ------

Moonset 4:03 PM

Moon Phase

Campground Weather - Check Reports for 8800+ Locations

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Weather Near Janesville

California Conservation Cent, CA

Contiguous United States Extremes

Sun's High Temperature
108 at Death Valley, CA

Sun's Low Temperature
18 at 27 Miles South Of Bonanza, UT

Weather Folklore

Oily floors quite slippery get before the rain makes everything wet.

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About Janesville, California

Janesville (also known as Lassen) is a sparsely populated census-designated place in Lassen County, California. It is located 11 miles (18 km) southeast of Susanville, at an elevation of 4239 feet (1292 m). Janesville is located on the eastern slopes of the Sierra Nevada Mountain range. Its population is 2,461 as of the 2020 census, up from 1,408 from the 2010 census.

The community consists of an elementary school, a park, four churches, two gas stations, a pizza parlor, a coffee shop, a veterinary hospital, a hardware store, a post office, a Dollar General and a few other businesses.

Janesville stretches over a distance of 8 miles (13 km). Its ZIP Code is 96114. The community is inside area code 530.

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