No Watches or Warnings for Oak Grove
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Weather Conditions for Oak Grove, Illinois : Cass County
Issued: 8:41 am CDT Oct 12, 2026 Latitude: 40.0194927 Longitude: -90.4145691 View on Google Maps

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Columbus Day Tonight Tuesday Wednesday Thursday Friday Saturday Sunday
Sunny on Columbus Day Mostly Clear on Tonight Sunny on Tuesday 90% chance of rain on Wednesday 90% chance of thunderstorms on Thursday Mostly Sunny on Friday Sunny on Saturday Sunny on Sunday
High: 90°F Low: 71°F High: 91°F High: 77°F High: 74°F High: 60°F High: 60°F High: 67°F
  Low: 67°F Low: 60°F Low: 48°F Low: 37°F Low: 37°F  
Sunny Mostly Clear Sunny Rain Thunderstorms Mostly Sunny Sunny Sunny

Hourly forecast

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

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Current Conditions at
JACKSONVILLE MUNICIPAL - (KIJX)
81°
Clear
as of 10:35 AM CDST
Rel. Humidity: 51%
Dew Point: 61°F
Visibility: 10 Miles
Pressure: 29.93 in.
Flight Rule: VFR
Wind Data
13 MPH
Gust: 22 MPH
200° South
Cloud Level(s): Clear
Current Conditions at
PITTSFIELD - (KPPQ)
82°
Clear
as of 10:35 AM CDST
Rel. Humidity: 48%
Dew Point: 61°F
Visibility: 10 Miles
Pressure: 29.94 in.
Flight Rule: VFR
Wind Data
8 MPH
210° Southwest
Cloud Level(s): Clear
Current Conditions at
MACOMB MUNICIPAL AIRPORT - (KMQB)
81°
Clear
as of 10:35 AM CDST
Rel. Humidity: 54%
Dew Point: 63°F
Visibility: 10 Miles
Pressure: 29.91 in.
Flight Rule: VFR
Wind Data
14 MPH
Gust: 22 MPH
220° Southwest
Cloud Level(s): Clear
Current Conditions at
SPRINGFIELD - (KSPI)
79°
Clear
as of 9:52 AM CDST
Rel. Humidity: 54%
Dew Point: 61°F
Visibility: 10 Miles
Pressure: 29.96 in.
Flight Rule: VFR
Wind Data
10 MPH
Gust: 18 MPH
210° Southwest
Cloud Level(s): Clear
Sunny on Columbus Day Columbus Day... Sunny, with a high near 90. South southwest wind 9 to 14 mph, with gusts as high as 23 mph.

Mostly Clear on Tonight Tonight... Mostly clear, with a low around 71. South southwest wind around 8 mph, with gusts as high as 20 mph.

Sunny on Tuesday Tuesday... Sunny, with a high near 91. West southwest wind 6 to 8 mph, with gusts as high as 16 mph.

80% chance of thunderstorms Tuesday Night Tuesday Night... A chance of showers and thunderstorms before 1am, then showers and possibly a thunderstorm between 1am and 4am, then showers after 4am. Low around 67. Calm wind. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

90% chance of rain Wednesday Wednesday... Showers. High near 77. Calm wind becoming north around 5 mph in the afternoon. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.

60% chance of rain Wednesday Night Wednesday Night... Showers likely after 1am. Mostly cloudy, with a low around 60. East northeast wind around 5 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.

90% chance of thunderstorms Thursday Thursday... Showers, with thunderstorms also possible after 1pm. High near 74. East northeast wind 5 to 8 mph becoming west southwest in the afternoon. Winds could gust as high as 16 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.

40% chance of rain Thursday Night Thursday Night... A 40 percent chance of showers before 1am. Mostly cloudy, with a low around 48.

Mostly Sunny on Friday Friday... Mostly sunny, with a high near 60. Breezy.

Mostly Clear on Friday Night Friday Night... Mostly clear, with a low around 37.

Sunny on Saturday Saturday... Sunny, with a high near 60.

Clear on Saturday Night Saturday Night... Clear, with a low around 37.

Sunny on Sunday Sunday... Sunny, with a high near 67.

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

Sun Almanac for Oak Grove, Illinois
Astronomical Sunrise 05:39 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 06:11 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 07:09 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 18 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 6:27 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 6:54 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 7:25 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 7:57 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 12 Minutes
Nautical Rise to Set: 13 Hours 14 Minutes
Astro Rise to Set: 14 Hours 18 Minutes

Click for yearly Sun Almanac for Oak Grove
Moon Almanac for Oak Grove, Illinois
Moon Phase: Waxing Crescent
Moon Illumination: 4%
Moon Age: 1.95 Days
Moon is currently above the horizon
Distance from Moon to Earth: 246,894 miles
Upcoming Lunar Events for
Oak Grove:
Next EventEvent TimeIllum

High Moon:02:19 pm Mon4.6%
Moonset:07:09 pm Mon5.5%
Moonrise:10:27 am Tue8.7%
High Moon:03:08 pm Tue9.8%
Moonset:07:44 pm Tue11.0%
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