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Weather Conditions for Nachusa, Illinois : Lee County
Issued: 12:16 pm CDT Sep 13, 2026 Latitude: 41.8314209 Longitude: -89.3898229 View on Google Maps

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This Afternoon Tonight Monday Tuesday Wednesday Thursday Friday Saturday
60% chance of rain on This Afternoon Morning Fog on Tonight Morning Fog on Monday 80% chance of thunderstorms on Tuesday 70% chance of thunderstorms on Wednesday Rain on Thursday 20% chance of  on Friday 20% chance of  on Saturday
High: 64 °F Low: 46°F High: 74°F High: 80°F High: 72°F High: 80°F High: 76°F High: 74°F
Low: 66°F Low: 58°F Low: 62°F Low: 61°F Low: 58°F  
Rain Morning Fog Morning Fog Thunderstorms Thunderstorms Rain Partly Sunny Partly Sunny
Current Conditions at
STERLING ROCK - (KSQI)
72°
Mostly Cloudy
as of 11:56 AM CDST
Rel. Humidity: 40%
Dew Point: 46°F
Visibility: 10 Miles
Pressure: 30.19 in.
Flight Rule: VFR
Wind Data
12 MPH
350° North
Cloud Level(s): Broken at 10000ft
Current Conditions at
ROCHELLE MUNICIPAL ARPT - (KRPJ)
66°
Mostly Cloudy
as of 12:35 PM CDST
Rel. Humidity: 48%
Dew Point: 46°F
Visibility: 10 Miles
Pressure: 30.18 in.
Flight Rule: VFR
Wind Data
10 MPH
340° North
Cloud Level(s): Broken at 11000ft
Current Conditions at
ROCKFORD - (KRFD)
66°
Cloudy
as of 11:54 AM CDST
Rel. Humidity: 59%
Dew Point: 52°F
Visibility: 10 Miles
Pressure: 30.17 in.
Flight Rule: VFR
Wind Data
14 MPH
320° Northwest
Cloud Level(s): Solid Overcast at 11000ft
Current Conditions at
ALBERTUS AIRPORT - (KFEP)
61°
Cloudy
as of 12:35 PM CDST
Rel. Humidity: 87%
Dew Point: 57°F
Visibility: 7 Miles
Pressure: 30.19 in.
Flight Rule: VFR
Wind Data
Calm
Cloud Level(s): Solid Overcast at 9000ft
60% chance of rain This Afternoon This Afternoon... Showers likely, mainly between 3pm and 4pm. Mostly cloudy, with a temperature falling to around 64 by 5pm. North wind 5 to 10 mph, with gusts as high as 15 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

Morning Fog on Tonight Tonight... Patchy fog after 3am. Otherwise, mostly clear, with a low around 46. North northwest wind around 5 mph becoming calm in the evening.

Morning Fog on Monday Monday... Patchy fog before 7am. Otherwise, increasing clouds, with a high near 74. Light and variable wind becoming south southeast 10 to 15 mph in the morning. Winds could gust as high as 20 mph.

70% chance of thunderstorms Monday Night Monday Night... Showers likely and possibly a thunderstorm after 1am. Partly cloudy, with a low around 66. Breezy, with a south southeast wind 15 to 20 mph, with gusts as high as 25 mph. Chance of precipitation is 70%.

80% chance of thunderstorms Tuesday Tuesday... Showers and possibly a thunderstorm before 10am, then showers between 10am and 1pm, then showers likely and possibly a thunderstorm after 1pm. High near 80. South southwest wind around 10 mph becoming west northwest in the afternoon. Winds could gust as high as 20 mph. Chance of precipitation is 80%.

60% chance of thunderstorms Tuesday Night Tuesday Night... A chance of showers and thunderstorms before 10pm, then a chance of showers between 10pm and 1am, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 58. Chance of precipitation is 60%.

70% chance of thunderstorms Wednesday Wednesday... Showers likely and possibly a thunderstorm. Mostly cloudy, with a high near 72. Chance of precipitation is 70%.

20% chance of thunderstorms Wednesday Night Wednesday Night... A chance of showers, then showers and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 62.

Rain on Thursday Thursday... Showers likely, mainly before 1pm. Mostly cloudy, with a high near 80.

20% chance of rain Thursday Night Thursday Night... A chance of showers after 1am. Mostly cloudy, with a low around 61.

20% chance of  Friday Friday... A chance of showers. Partly sunny, with a high near 76.

20% chance of rain Friday Night Friday Night... A chance of showers. Mostly cloudy, with a low around 58.

20% chance of  Saturday Saturday... A chance of showers. Partly sunny, with a high near 74.

Illinois' Warnings, Watches, and AdvisoriesIllinois' Watches, Warnings, and Advisories

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Sun Almanac for Nachusa, Illinois
Astronomical Sunrise 05:01 AM?Astronomical sunrise occurs when the Sun is 18° below the horizon and the sky begins to brighten from a completly darkened state.
Nautical Sunrise 05:35 AM?Nautical sunrise (or nautical dawn) is the precise moment when the sun's center is 12° below the horizon in the morning. It marks the beginning of nautical twilight, allowing pilots/mariners to see the horizon.
Civil Sunrise 06:08 AM?Civil sunrise is the moment in the morning when the sun's center is 6° below the horizon. It marks the start of morning civil twilight, providing enough natural light for most, outdoor activities without artificial lighting. It typically occurs roughly 20-30 minutes before actual sunrise.
Sunrise 06:36 AM?Sunrise (or sunup) is the moment when the upper rim of the Sun appears on the horizon in the morning. It marks the end of the twilight phase, often accompanied by distinct atmospheric colors.

Daylight: 12 Hours 35 Minutes?Daylight hours are the period of time between local sunrise and sunset, representing the daily portion of sunlight. These hours change in length based on season, Earth's tilt, and latitude.

Sunset 7:11 PM?The sunset is defined in astronomy as the moment the upper limb of the Sun disappears below the horizon. It marks the end of daylight and is often accompanied by distinct atmospheric colors. It also signals the beginning of twilight.
Civil Sunset 7:39 PM?Civil sunset (or evening civil twilight) occurs when the center of the sun is 6° below the horizon, marking the end of the brightest twilight phase. It typically occurs roughly 20-30 minutes after sunset, providing enough light for most outdoor activities to continue without artificial light.
Nautical Sunset 8:12 PM?Nautical sunset occurs when the sun's center is 12° below the horizon, marking the end of nautical twilight. This phase, following civil twilight, allows the horizon to remain visible, enabling mariners to take accurate star sights for navigation. The sky is dark, but some ambient light remains
Astronomical Sunset 8:46 PM?Astronomical sunrise occurs when the Sun drops to 18° below the horizon. This causes the sky to enter a completly darkened state.

Civil Rise to Set: 13 Hours 31 Minutes
Nautical Rise to Set: 14 Hours 37 Minutes
Astro Rise to Set: 15 Hours 45 Minutes

Click for yearly Sun Almanac for Nachusa
Moon Almanac for Nachusa, Illinois
Moon Phase: Waxing Crescent
Moon Illumination: 8%
Moon Age: 2.66 Days
Moon is currently above the horizon
Distance from Moon to Earth: 243,479 miles
Upcoming Lunar Events for
Nachusa:
Next EventEvent TimeIllum

High Moon:02:49 pm Sun7.9%
Moonset:08:05 pm Sun9.2%
Moonrise:10:32 am Mon13.0%
High Moon:03:35 pm Mon14.5%
Moonset:08:30 pm Mon16.0%
New Moon: Thu Sep 10
First Quarter: Fri Sep 18
Full Moon: Sat Sep 26
Last Quarter: Sat Oct 3
New Moon: Sat Oct 10
Click for Monthly Moon Almanac