No Watches or Warnings for Weir
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Weather Conditions for Weir, Illinois : Clark County
Issued: 1:26 pm CDT Aug 28, 2026 Latitude: 39.2678155 Longitude: -87.7903075 View on Google Maps

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This Afternoon Tonight Saturday Sunday Monday Tuesday Wednesday Thursday
Sunny on This Afternoon Mostly Clear on Tonight Mostly Sunny on Saturday Sunny on Sunday Sunny on Monday Sunny on Tuesday Sunny on Wednesday Sunny on Thursday
High: 84°F Low: 61°F High: 86°F High: 91°F High: 95°F High: 97°F High: 96°F High: 96°F
Low: 67°F Low: 72°F Low: 75°F Low: 76°F Low: 75°F  
Sunny Mostly Clear Mostly Sunny Sunny Sunny Sunny Sunny Sunny
Current Conditions at
ROBINSON - (KRSV)
73°
Mostly Clear
as of 7:35 AM CDST
Rel. Humidity: 100%
Dew Point: 73°F
Visibility: 10 Miles
Pressure: 30.25 in.
Flight Rule: VFR
Wind Data
2 MPH
330° Northwest
Cloud Level(s): Few at 7000ft
Current Conditions at
MATTOON - (KMTO)
73°
Mostly Cloudy
as of 7:42 AM CDST
Rel. Humidity: 94%
Dew Point: 72°F
Visibility: 7 Miles
Pressure: 30.26 in.
Flight Rule: VFR
Wind Data
3 MPH
040° Northeast
Cloud Level(s): Scattered at 400ft, Broken at 6000ft
Current Conditions at
EDGAR COUNTY ARPT - (KPRG)
72°
Cloudy
Light Thunderstorm Rain
as of 7:35 AM CDST
Rel. Humidity: 100%
Dew Point: 72°F
Visibility: 7 Miles
Pressure: 30.27 in.
Flight Rule: VFR
Wind Data
Calm
Cloud Level(s): Scattered at 800ft, Broken at 6000ft, Solid Overcast at 7000ft
Sunny on This Afternoon This Afternoon... Sunny, with a high near 84. Northeast wind around 7 mph.

Mostly Clear on Tonight Tonight... Mostly clear, with a low around 61. Northeast wind around 5 mph becoming calm in the evening.

Mostly Sunny on Saturday Saturday... Mostly sunny, with a high near 86. Calm wind becoming southeast around 5 mph in the morning.

Cloudy on Saturday Night Saturday Night... Partly cloudy, with a low around 67. South southeast wind 3 to 5 mph.

Sunny on Sunday Sunday... Sunny, with a high near 91. South southwest wind 6 to 13 mph, with gusts as high as 20 mph.

Mostly Clear on Sunday Night Sunday Night... Mostly clear, with a low around 72. South wind 6 to 8 mph.

Sunny on Monday Monday... Sunny and hot, with a high near 95. South southwest wind 8 to 11 mph, with gusts as high as 20 mph.

Mostly Clear on Monday Night Monday Night... Mostly clear, with a low around 75.

Sunny on Tuesday Tuesday... Sunny and hot, with a high near 97.

Mostly Clear on Tuesday Night Tuesday Night... Mostly clear, with a low around 76.

Sunny on Wednesday Wednesday... Sunny and hot, with a high near 96.

Mostly Clear on Wednesday Night Wednesday Night... Mostly clear, with a low around 75.

Sunny on Thursday Thursday... Sunny and hot, with a high near 96.

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

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Sun Almanac for Weir, Illinois
Astronomical Sunrise 17:03 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 17:35 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 18:07 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 18:34 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: 0 Hours 24 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 06:58 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 07:25 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 07:57 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 08:29 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: 1 Hours 18 Minutes
Nautical Rise to Set: 2 Hours 22 Minutes
Astro Rise to Set: 3 Hours 26 Minutes

Click for yearly Sun Almanac for Weir
Moon Almanac for Weir, Illinois
Moon Phase: Waxing Crescent
Moon Illumination: 29%
Moon Age: 5.30 Days
Moon is currently below the horizon
Distance from Moon to Earth: 249,807 miles
Upcoming Lunar Events for
Weir:
Next EventEvent TimeIllum

Moonrise:01:28 pm Wed30.1%
High Moon:06:06 pm Wed31.8%
Moonset:10:39 pm Wed33.5%
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