How is the weather in Port Byron, IL?

At 9:36 PM on Sat, Sep 20, 2025 it is cloudy and 68 degrees Fahrenheit, feeling like 68 degrees.

Port Byron, IL Weather Forecast and Current Conditions (61275)

68°F
Feels Like 68°F

Humidity 86% Dew Point 63°F Wind Calm 0 MPH Barometer 29.31 in.744.5 mm

Solar Rad 0 w/m2 UV Index 0

Report from 6.4 miles WSW of central Port Byron at 9:36 PM Sat, Sep 20, 2025

Current Weather

68°F
Feels Like 68°F

Humidity 86% Dew Point 63°F Wind Calm 0 MPH Barometer 29.31 in.744.5 mm

Solar Rad 0 w/m2 UV Index 0

Report from 6.4 miles WSW of central Port Byron at 9:36 PM Sat, Sep 20, 2025

Forecast at a Glance

SatSep 20

40%

63°

SunSep 21

20%

80°

62°

MonSep 22

40%

81°

63°

TueSep 23

40%

79°

60°

WedSep 24

30%

75°

58°

ThuSep 25

30%

74°

54°

FriSep 26

20%

76°

54°

This Date in Weather History

1845 - A tornado traveled 275 miles across Lake Ontario, New York and Lake Champlain.

Port Byron 7 Day Weather Forecast Details

Saturday Sep 20

Night: A chance of showers and thunderstorms before 4am, then patchy fog and a slight chance of showers and thunderstorms. Mostly cloudy, with a low around 63. East wind around 5 mph. Chance of precipitation is 40%.

Sunday Sep 21

Day: Patchy fog and a slight chance of showers and thunderstorms. Mostly cloudy. High near 80, with temperatures falling to around 76 in the afternoon. West wind around 5 mph. Chance of precipitation is 20%.

Night: A slight chance of showers and thunderstorms before 7pm, then a chance of showers and thunderstorms. Mostly cloudy, with a low around 62. Southwest wind around 5 mph. Chance of precipitation is 40%.

Monday Sep 22

Day: A chance of rain showers before 1pm, then a chance of showers and thunderstorms. Partly sunny, with a high near 81. South wind around 5 mph. Chance of precipitation is 40%.

Night: A chance of showers and thunderstorms before 1am, then a chance of showers and thunderstorms. Mostly cloudy, with a low around 63. Chance of precipitation is 40%.

Tuesday Sep 23

Day: A chance of showers and thunderstorms. Mostly cloudy, with a high near 79. Chance of precipitation is 40%.

Night: A chance of showers and thunderstorms before 7pm, then a chance of showers and thunderstorms. Mostly cloudy, with a low around 60. Chance of precipitation is 40%.

Wednesday Sep 24

Day: A chance of rain showers before 1pm, then a chance of showers and thunderstorms. Partly sunny, with a high near 75. Chance of precipitation is 30%.

Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 58. Chance of precipitation is 30%.

Thursday Sep 25

Day: A chance of rain showers. Mostly sunny, with a high near 74. Chance of precipitation is 30%.

Night: A chance of rain showers. Partly cloudy, with a low around 54. Chance of precipitation is 30%.

Friday Sep 26

Day: A slight chance of rain showers before 1pm. Mostly sunny, with a high near 76.

Night: Mostly clear, with a low around 54.

Saturday Sep 27

Day: Sunny, with a high near 77.

Sun & Moon Monthly

First Light 6:20 AM

Sunrise 6:48 AM

Sunset 7:03 PM

Last Light 7:31 PM

Moonrise 5:35 AM

Moonset 6:47 PM

Moon Phase

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