No Watches or Warnings for Frankfort
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Weather Conditions for Frankfort, Illinois : Franklin County
Issued: 7:56 pm CDT Sep 12, 2026 Latitude: 37.9000495 Longitude: -88.9022902 View on Google Maps

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Tonight Sunday Monday Tuesday Wednesday Thursday Friday Saturday
Mostly Clear on Tonight Mostly Sunny on Sunday Mostly Cloudy on Monday Sunny on Tuesday Sunny on Wednesday 10% chance of thunderstorms on Thursday 10% chance of rain on Friday 10% chance of rain on Saturday
Low: 67°F High: 92°F High: 88°F High: 97°F High: 96°F High: 93°F High: 89°F High: 87°F
Low: 64°F Low: 68°F Low: 72°F Low: 72°F Low: 67°F Low: 63°F  
Mostly Clear Mostly Sunny Mostly Cloudy Sunny Sunny Thunderstorms Rain Rain
Current Conditions at
MARION - (KMWA)
81°
Clear
as of 8:55 PM CDST
Rel. Humidity: 65%
Dew Point: 68°F
Visibility: 10 Miles
Pressure: 29.94 in.
Flight Rule: VFR
Wind Data
3 MPH
210° Southwest
Cloud Level(s): Clear
Current Conditions at
HARRISBURG-RALEIGH - (KHSB)
75°
Clear
as of 8:55 PM CDST
Rel. Humidity: 83%
Dew Point: 70°F
Visibility: 10 Miles
Pressure: 29.94 in.
Flight Rule: VFR
Wind Data
Calm
Cloud Level(s): Clear
Current Conditions at
CARBONDALE - (KMDH)
77°
Clear
as of 8:53 PM CDST
Rel. Humidity: 88%
Dew Point: 73°F
Pressure: 29.93 in.
Wind Data
Calm
Cloud Level(s): Clear
Current Conditions at
MT VERNON - (KMVN)
72°
Clear
as of 8:56 PM CDST
Rel. Humidity: 94%
Dew Point: 70°F
Visibility: 10 Miles
Pressure: 29.94 in.
Flight Rule: VFR
Wind Data
Calm
Cloud Level(s): Clear
Mostly Clear on Tonight Tonight... Mostly clear, with a low around 67. Calm wind.

Mostly Sunny on Sunday Sunday... Mostly sunny, with a high near 92. Calm wind becoming northwest 5 to 7 mph in the afternoon.

Cloudy on Sunday Night Sunday Night... Partly cloudy, with a low around 64. Northeast wind 3 to 8 mph.

Mostly Cloudy on Monday Monday... Mostly cloudy, then gradually becoming sunny, with a high near 88. East wind around 9 mph.

Mostly Clear on Monday Night Monday Night... Mostly clear, with a low around 68. East southeast wind 5 to 7 mph.

Sunny on Tuesday Tuesday... Sunny and hot, with a high near 97. South southwest wind 5 to 10 mph.

Mostly Clear on Tuesday Night Tuesday Night... Mostly clear, with a low around 72. Light south southeast wind.

Sunny on Wednesday Wednesday... Sunny, with a high near 96. South southwest wind 3 to 8 mph.

Mostly Clear on Wednesday Night Wednesday Night... Mostly clear, with a low around 72. Light south southeast wind.

10% chance of thunderstorms Thursday Thursday... A slight chance of showers and thunderstorms after 1pm. Sunny, with a high near 93. Light and variable wind becoming southwest 5 to 7 mph in the morning.

10% chance of thunderstorms Thursday Night Thursday Night... A slight chance of showers and thunderstorms. Partly cloudy, with a low around 67. Light and variable wind.

10% chance of rain Friday Friday... A slight chance of showers. Mostly sunny, with a high near 89. Calm wind becoming west northwest 5 to 8 mph in the morning.

Mostly Clear on Friday Night Friday Night... Mostly clear, with a low around 63. East southeast wind 3 to 5 mph.

10% chance of rain Saturday Saturday... A slight chance of showers. Mostly sunny, with a high near 87. South wind 5 to 10 mph becoming northwest in the afternoon.

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

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Sun Almanac for Frankfort, Illinois
Astronomical Sunrise 05:06 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 05:38 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 06:09 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 06:35 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 33 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 7:08 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 7:35 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 8:06 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 8:38 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 26 Minutes
Nautical Rise to Set: 14 Hours 28 Minutes
Astro Rise to Set: 15 Hours 32 Minutes

Click for yearly Sun Almanac for Frankfort
Moon Almanac for Frankfort, Illinois
Moon Phase: Waxing Crescent
Moon Illumination: 5%
Moon Age: 2.02 Days
Moon is currently below the horizon
Distance from Moon to Earth: 241,618 miles
Upcoming Lunar Events for
Frankfort:
Next EventEvent TimeIllum

Moonrise:09:16 am Sun6.6%
High Moon:02:47 pm Sun7.9%
Moonset:08:10 pm Sun9.2%
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