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Weather Conditions for Franklin Grove, Illinois : Lee County
Issued: 2:51 pm CDT Oct 15, 2026 Latitude: 41.8416982 Longitude: -89.3003765 View on Google Maps

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Tonight Friday Saturday Sunday Monday Tuesday Wednesday Thursday
40% chance of rain on Tonight 40% chance of rain on Friday Sunny on Saturday Sunny on Sunday Mostly Sunny on Monday Mostly Sunny on Tuesday Mostly Sunny on Wednesday Mostly Sunny on Thursday
Low: 45°F High: 52°F High: 57°F High: 64°F High: 68°F High: 72°F High: 73°F High: 74°F
Low: 32°F Low: 37°F Low: 40°F Low: 42°F Low: 45°F Low: 50°F  
Rain Rain Sunny Sunny Mostly Sunny Mostly Sunny Mostly Sunny Mostly Sunny

Hourly forecast

Franklin Grove, il · Next 24 hours · Eastern time (EST/EDT)

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Current Conditions at
ROCHELLE MUNICIPAL ARPT - (KRPJ)
61°
Cloudy
as of 8:55 PM CDST
Rel. Humidity: 100%
Dew Point: 61°F
Visibility: 7 Miles
Pressure: 29.82 in.
Flight Rule: IFR
Wind Data
16 MPH
Gust: 24 MPH
290° West
Cloud Level(s): Solid Overcast at 900ft
Current Conditions at
STERLING ROCK - (KSQI)
59°
Cloudy
as of 8:56 PM CDST
Rel. Humidity: 93%
Dew Point: 57°F
Visibility: 10 Miles
Pressure: 29.85 in.
Flight Rule: MVFR
Wind Data
21 MPH
Gust: 26 MPH
290° West
Cloud Level(s): Scattered at 1100ft, Broken at 1700ft, Solid Overcast at 2200ft
Current Conditions at
ROCKFORD - (KRFD)
59°
Cloudy
as of 8:54 PM CDST
Rel. Humidity: 93%
Dew Point: 57°F
Visibility: 10 Miles
Pressure: 29.80 in.
Flight Rule: MVFR
Wind Data
16 MPH
280° West
Cloud Level(s): Few at 600ft, Broken at 1000ft, Solid Overcast at 1900ft
Current Conditions at
ALBERTUS AIRPORT - (KFEP)
57°
Cloudy
as of 8:55 PM CDST
Rel. Humidity: 93%
Dew Point: 55°F
Visibility: 10 Miles
Pressure: 29.84 in.
Flight Rule: MVFR
Wind Data
15 MPH
Gust: 28 MPH
300° Northwest
Cloud Level(s): Broken at 1200ft, Broken at 2000ft, Solid Overcast at 2800ft
40% chance of rain Tonight Tonight... A 40 percent chance of showers before 10pm. Cloudy, with a low around 45. Breezy, with a west northwest wind 15 to 20 mph, with gusts as high as 30 mph.

40% chance of rain Friday Friday... A 40 percent chance of showers, mainly between noon and 4pm. Mostly cloudy, with a high near 52. Breezy, with a north northwest wind 15 to 20 mph, with gusts as high as 35 mph.

Mostly Cloudy on Friday Night Friday Night... Widespread frost, mainly after 5am. Otherwise, mostly cloudy, then gradually becoming clear, with a low around 32. North wind 10 to 15 mph decreasing to 5 to 10 mph after midnight. Winds could gust as high as 30 mph.

Sunny on Saturday Saturday... Widespread frost, mainly before 8am. Otherwise, sunny, with a high near 57. Calm wind becoming southwest around 5 mph in the afternoon. Winds could gust as high as 10 mph.

Clear on Saturday Night Saturday Night... Clear, with a low around 37. South southwest wind around 5 mph, with gusts as high as 15 mph.

Sunny on Sunday Sunday... Patchy frost before 7am. Otherwise, sunny, with a high near 64.

Mostly Clear on Sunday Night Sunday Night... Mostly clear, with a low around 40.

Mostly Sunny on Monday Monday... Mostly sunny, with a high near 68.

Cloudy on Monday Night Monday Night... Partly cloudy, with a low around 42.

Mostly Sunny on Tuesday Tuesday... Mostly sunny, with a high near 72.

Mostly Clear on Tuesday Night Tuesday Night... Mostly clear, with a low around 45.

Mostly Sunny on Wednesday Wednesday... Mostly sunny, with a high near 73.

Mostly Clear on Wednesday Night Wednesday Night... Mostly clear, with a low around 50.

Mostly Sunny on Thursday Thursday... Mostly sunny, with a high near 74.

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

Sun Almanac for Franklin Grove, Illinois
Astronomical Sunrise 05:37 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 06:10 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 06:42 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 07:10 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: 11 Hours 06 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 6:16 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 6:44 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 7:16 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 7:49 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: 12 Hours 2 Minutes
Nautical Rise to Set: 13 Hours 6 Minutes
Astro Rise to Set: 14 Hours 12 Minutes

Click for yearly Sun Almanac for Franklin Grove
Moon Almanac for Franklin Grove, Illinois
Moon Phase: Waxing Crescent
Moon Illumination: 27%
Moon Age: 5.09 Days
Moon is currently below the horizon
Distance from Moon to Earth: 251,812 miles
Upcoming Lunar Events for
Franklin Grove:
Next EventEvent TimeIllum

Moonrise:01:20 pm Fri31.9%
High Moon:05:37 pm Fri33.5%
Moonset:09:55 pm Fri35.1%
New Moon: Sat Oct 10
First Quarter: Sun Oct 18
Full Moon: Mon Oct 26
Last Quarter: Sun Nov 1
New Moon: Mon Nov 9
Click for Monthly Moon Almanac