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Weather Conditions for Gillum, Illinois : McLean County
Issued: 6:36 am CDT Oct 12, 2026 Latitude: 40.4078135 Longitude: -88.8995188 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 80% chance of rain on Wednesday 90% chance of thunderstorms on Thursday Mostly Sunny on Friday Sunny on Saturday Sunny on Sunday
High: 88°F Low: 70°F High: 89°F High: 77°F High: 74°F High: 60°F High: 59°F High: 66°F
  Low: 67°F Low: 59°F Low: 50°F Low: 37°F Low: 37°F  
Sunny Mostly Clear Sunny Rain Thunderstorms Mostly Sunny Sunny Sunny

Hourly forecast

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

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Current Conditions at
BLOOMINGTON - (KBMI)
63°
Clear
as of 5:56 AM CDST
Rel. Humidity: 88%
Dew Point: 59°F
Visibility: 10 Miles
Pressure: 29.96 in.
Flight Rule: VFR
Wind Data
7 MPH
220° Southwest
Cloud Level(s): Clear
Current Conditions at
PONTIAC MUNICIPAL AIRPT - (KPNT)
63°
Clear
as of 6:35 AM CDST
Rel. Humidity: 88%
Dew Point: 59°F
Visibility: 10 Miles
Pressure: 29.94 in.
Flight Rule: VFR
Wind Data
5 MPH
200° South
Cloud Level(s): Clear
Current Conditions at
DECATUR - (KDEC)
64°
Clear
as of 5:54 AM CDST
Rel. Humidity: 82%
Dew Point: 59°F
Visibility: 10 Miles
Pressure: 29.97 in.
Flight Rule: VFR
Wind Data
8 MPH
220° Southwest
Cloud Level(s): Clear
Sunny on Columbus Day Columbus Day... Sunny, with a high near 88. Southwest wind 8 to 17 mph, with gusts as high as 22 mph.

Mostly Clear on Tonight Tonight... Mostly clear, with a low around 70. Southwest wind 11 to 14 mph, with gusts as high as 22 mph.

Sunny on Tuesday Tuesday... Sunny, with a high near 89. West southwest wind 11 to 15 mph, with gusts as high as 20 mph.

70% chance of thunderstorms Tuesday Night Tuesday Night... A chance of showers and thunderstorms before 1am, then showers likely and possibly a thunderstorm between 1am and 4am, then showers likely after 4am. Increasing clouds, with a low around 67. Southwest wind around 7 mph becoming northwest after midnight. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

80% chance of rain Wednesday Wednesday... Showers. High near 77. North wind 6 to 9 mph. Chance of precipitation is 80%. 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 59. Northeast wind 10 to 13 mph, with gusts as high as 16 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 10 to 13 mph becoming west 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.

50% chance of rain Thursday Night Thursday Night... A 50 percent chance of showers before 1am. Mostly cloudy, with a low around 50. Breezy.

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 59.

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

Sunny on Sunday Sunday... Sunny, with a high near 66.

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

Sun Almanac for Gillum, Illinois
Astronomical Sunrise 05:33 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 06:05 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 06:36 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 07:04 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 16 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 6:20 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 6:48 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 7:19 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 7:51 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 Gillum
Moon Almanac for Gillum, Illinois
Moon Phase: Waxing Crescent
Moon Illumination: 4%
Moon Age: 1.80 Days
Moon is currently below the horizon
Distance from Moon to Earth: 246,535 miles
Upcoming Lunar Events for
Gillum:
Next EventEvent TimeIllum

Moonrise:09:16 am Mon3.8%
High Moon:02:13 pm Mon4.6%
Moonset:07:02 pm Mon5.5%
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