As of 06:44 CST

Weather in Janesville, IL

28°

Janesville, Sunday, 15 November, 06:44

Clear. Feels like 28°. High 51°, low 28°.

Pressure30.42 inHg

Wind0 mph N

Humidity86%

Visibility6.2 mi

Dew point25°

See detailed hourly forecast

Mon, 1654° / 28°

54 °

Janesville, Monday, 16 November

Clear. High 54°, low 28°.

Pressure30.53 inHg

Wind4.9 mph SW

Humidity48%

Visibility6.2 mi

Dew point33°

Tue, 1756° / 34°

56 °

Janesville, Tuesday, 17 November

Clear. High 56°, low 34°.

Pressure30.53 inHg

Wind6.6 mph S

Humidity53%

Visibility6.2 mi

Dew point38°

Wed, 1858° / 39°

58 °

Janesville, Wednesday, 18 November

Overcast. High 58°, low 39°.

Pressure30.39 inHg

Wind11.1 mph S

Humidity47%

Visibility6.2 mi

Dew point38°

Thu, 1963° / 43°

63 °

Janesville, Thursday, 19 November

Clear. High 63°, low 43°.

Pressure30.33 inHg

Wind11.1 mph SW

Humidity55%

Visibility—

Dew point42°

Fri, 2066° / 46°

66 °

Janesville, Friday, 20 November

Partly cloudy. High 66°, low 46°.

Pressure30.30 inHg

Wind7.8 mph S

Humidity61%

Visibility—

Dew point48°

Sat, 2164° / 45°

0.02

64 °

Janesville, Saturday, 21 November

Light rain. High 64°, low 45°.

Pressure30.06 inHg

Wind19.8 mph S

Humidity35%

Visibility—

Dew point33°

Sun, 2253° / 41°

53 °

Janesville, Sunday, 22 November

Clear. High 53°, low 41°.

Pressure30.24 inHg

Wind15.4 mph NW

Humidity47%

Visibility—

Dew point32°

Mon, 2348° / 32°

48 °

Janesville, Monday, 23 November

Clear. High 48°, low 32°.

Pressure30.47 inHg

Wind10.6 mph NE

Humidity43%

Visibility—

Dew point23°

Tue, 2448° / 29°

48 °

Janesville, Tuesday, 24 November

Overcast. High 48°, low 29°.

Pressure30.50 inHg

Wind8.8 mph E

Humidity27%

Visibility—

Dew point11°

Wed, 2556° / 32°

56 °

Janesville, Wednesday, 25 November

Mostly clear. High 56°, low 32°.

Pressure30.42 inHg

Wind7.8 mph S

Humidity38%

Visibility—

Dew point25°

Thu, 2660° / 40°

60 °

Janesville, Thursday, 26 November

Clear. High 60°, low 40°.

Pressure30.27 inHg

Wind8.4 mph S

Humidity40%

Visibility—

Dew point32°

Fri, 2759° / 41°

59 °

Janesville, Friday, 27 November

Overcast. High 59°, low 41°.

Pressure30.30 inHg

Wind6 mph E

Humidity33%

Visibility—

Dew point27°

Sat, 2858° / 43°

58 °

Janesville, Saturday, 28 November

Overcast. High 58°, low 43°.

Pressure30.36 inHg

Wind5.7 mph NE

Humidity28%

Visibility—

Dew point23°

Sun, 2959° / 46°

59 °

Janesville, Sunday, 29 November

Overcast. High 59°, low 46°.

Pressure30.30 inHg

Wind5 mph NE

Humidity34%

Visibility—

Dew point27°

Mon, 3055° / 49°

0.07

55 °

Janesville, Monday, 30 November

Light rain. High 55°, low 49°.

Pressure30.09 inHg

Wind9.1 mph E

Humidity53%

Visibility—

Dew point38°

About the monthly outlook

How accurate is a 30-day forecast?

The first 16 days come from weather models — reliable for the first 3–5 days and progressively less so after that. Days 17 through 30 for Janesville, IL are built from the climate normal, the 60-year average, so they show typical weather for those dates rather than a specific forecast.

What does "above normal" mean?

We compare the forecast against the climate normal for those exact calendar days, computed from 60 years of observations. The deviation shows how much the coming month differs from a typical one.

Where do the 66-year records come from?

They are real temperature extremes recorded in Janesville, IL since 1960: the highest and lowest reading for each calendar date, with the year it happened.

How often is it updated?

The forecast portion refreshes every hour; the climate portion is based on long-term data and stays stable.