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Grayville, IL Weather Forecast | 5 Day

Updated: Thu Sep 10th 2026 5:00 PM CDT

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Grayville, IL Weather Forecast - 9-10-26 - Heavy Rain

Heavy Rain

Thu 9-10-26

Heavy Rain with a high of 77°F and a low of 70°F. It will likey rain, having a 91% chance of a downpour with an estimated 5.51in. Wind will be moderate, blowing around 14mph on average and gusts of 21.8mph at 8 PM. High humidity with average of 90% is anticipated, the maximum being 89% at 8 PM and 84% being its lowest at 6 PM. Barometric pressure is its highest of 29.98inHg at 10 PM, a lowest point of 29.9inHg at 7 PM with an avg 29.94inHg.

    • HI: 77°F
    • LO: 70°F
    • Rainfall: 91% | est. 5.51in
    • Snowfall: 0%
    • Wind
      13.2 mph
    • Humidity
      90% avg.
    • UV Index
      7
    • Air Quality
      Good
    • Sunrise
      06:29 AM
    • Sunset
      07:08 PM
    • Moonrise
      05:35 AM
    • Moonset
      06:46 PM
    • Moon Phase
      New Moon
Grayville, IL Weather Forecast - 9-11-26 - Overcast

Overcast

Weather Tomorrow, Fri 9-11-26

Overcast with a high of 79°F and a low of 67°F. It will likey rain, having a 81% chance of a downpour with an estimated 0.09in. Winds will be light at 7mph and gusts of 13.5mph at 2 AM. High humidity with average of 88% is anticipated, the maximum being 98% at 5 AM and 68% being its lowest at 3 PM. Barometric pressure is its highest of 29.97inHg at 9 AM, a lowest point of 29.87inHg at 7 PM with an avg 29.92inHg.

    • HI: 79°F
    • LO: 67°F
    • Rainfall: 81% | est. 0.09in
    • Snowfall: 0%
    • Wind
      6.7 mph
    • Humidity
      88% avg.
    • UV Index
      3.6
    • Air Quality
      Good
    • Sunrise
      06:30 AM
    • Sunset
      07:06 PM
    • Moonrise
      06:50 AM
    • Moonset
      07:13 PM
    • Moon Phase
      New Moon
Grayville, IL Weather Forecast - 9-12-26 - Sunny

Sunny

Sat 9-12-26

Sunny with a high of 87°F and a low of 69°F. There's a moderate 38% chance of rainfall with an estimated 0.02in. Winds will be light at 8mph and gusts of 17mph at 9 PM. The humidity will be on the higher side, averaging about 74%, the maximum being 97% at 7 AM and 45% being its lowest at 1 PM. Barometric pressure is its highest of 29.95inHg at 11 PM, a lowest point of 29.87inHg at 4 AM with an avg 29.91inHg.

    • HI: 87°F
    • LO: 69°F
    • Rainfall: 38% | est. 0.02in
    • Snowfall: 0%
    • Wind
      7.2 mph
    • Humidity
      74% avg.
    • UV Index
      7.6
    • Air Quality
      Good
    • Sunrise
      06:31 AM
    • Sunset
      07:05 PM
    • Moonrise
      08:03 AM
    • Moonset
      07:40 PM
    • Moon Phase
      New Moon
Grayville, IL Weather Forecast - 9-13-26 - Sunny

Sunny

Sun 9-13-26

Sunny with a high of 97°F and a low of 73°F. There's a very small chance of rainfall, only about 4%. Winds will be light at 9mph and gusts of 18.6mph at 11 PM. Humidity levels should be comfortable, sitting around 52% on average, the maximum being 74% at 4 AM and 28% being its lowest at 4 PM. Barometric pressure is its highest of 30.03inHg at 10 AM, a lowest point of 29.93inHg at 5 PM with an avg 29.98inHg.

    • HI: 97°F
    • LO: 73°F
    • Rainfall: 4%
    • Snowfall: 0%
    • Wind
      8.5 mph
    • Humidity
      52% avg.
    • UV Index
      7.3
    • Air Quality
      Good
    • Sunrise
      06:32 AM
    • Sunset
      07:03 PM
    • Moonrise
      09:16 AM
    • Moonset
      08:08 PM
    • Moon Phase
      Waxing Crescent
Grayville, IL Weather Forecast - 9-14-26 - Sunny

Sunny

Mon 9-14-26

Sunny with a high of 100°F and a low of 75°F. There's a very small chance of rainfall, only about 2%. Wind will be moderate, blowing around 14mph on average and gusts of 30mph at 9 PM. Humidity levels should be comfortable, sitting around 52% on average, the maximum being 77% at 4 AM and 27% being its lowest at 4 PM. Barometric pressure is its highest of 30.02inHg at 8 AM, a lowest point of 29.91inHg at 4 PM with an avg 29.97inHg.

    • HI: 100°F
    • LO: 75°F
    • Rainfall: 2%
    • Snowfall: 0%
    • Wind
      13.4 mph
    • Humidity
      52% avg.
    • UV Index
      7.4
    • Air Quality
      Good
    • Sunrise
      06:32 AM
    • Sunset
      07:02 PM
    • Moonrise
      10:27 AM
    • Moonset
      08:39 PM
    • Moon Phase
      Waxing Crescent
Grayville, IL Weather Forecast - 9-15-26 - Sunny

Sunny

Tue 9-15-26

Sunny with a high of 99°F and a low of 79°F. There's a very small chance of rainfall, only about 5% with an estimated 0in. Wind will be moderate, blowing around 14mph on average and gusts of 32.2mph at 12 AM. Humidity levels should be comfortable, sitting around 50% on average, the maximum being 74% at 11 PM and 29% being its lowest at 1 PM. Barometric pressure is its highest of 30.12inHg at 10 PM, a lowest point of 29.96inHg at 12 AM with an avg 30.03inHg.

    • HI: 99°F
    • LO: 79°F
    • Rainfall: 5% | est. 0in
    • Snowfall: 0%
    • Wind
      13.9 mph
    • Humidity
      50% avg.
    • UV Index
      9
    • Air Quality
      TBA
    • Sunrise
      06:33 AM
    • Sunset
      07:00 PM
    • Moonrise
      11:38 AM
    • Moonset
      09:16 PM
    • Moon Phase
      Waxing Crescent

This 5-Day weather forecast is valid for ZIP code 62844, accurately covering the area of Grayville, IL.