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Atwater, IL Weather Forecast | 5 Day

Updated: Thu Sep 17th 2026 2:00 PM CDT

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Atwater, IL Weather Forecast - 9-17-26 - Sunny

Sunny

Thu 9-17-26

Sunny with a high of 96°F and a low of 74°F. Rainfall expected to have a 57% chance with an estimated 0.07in. Winds will be light at 10mph and gusts of 11.9mph at 3 PM. The humidity will be on the higher side, averaging about 64%, the maximum being 78% at 11 PM and 33% being its lowest at 5 PM. Barometric pressure is its highest of 30.15inHg at 10 PM, a lowest point of 30.09inHg at 5 PM with an avg 30.12inHg.

    • HI: 96°F
    • LO: 74°F
    • Rainfall: 57% | est. 0.07in
    • Snowfall: 0%
    • Wind
      9.8 mph
    • Humidity
      64% avg.
    • UV Index
      7
    • Air Quality
      Good
    • Sunrise
      06:42 AM
    • Sunset
      07:04 PM
    • Moonrise
      01:58 PM
    • Moonset
      10:49 PM
    • Moon Phase
      First Quarter
Atwater, IL Weather Forecast - 9-18-26 - Sunny

Sunny

Weather Tomorrow, Fri 9-18-26

Sunny with a high of 92°F and a low of 69°F. Rainfall expected to have a 68% chance with an estimated 0.18in. Wind will be moderate, blowing around 13mph on average and gusts of 27.6mph at 11 PM. The humidity will be on the higher side, averaging about 75%, the maximum being 98% at 3 AM and 44% being its lowest at 5 PM. Barometric pressure is its highest of 30.17inHg at 9 AM, a lowest point of 29.99inHg at 6 PM with an avg 30.09inHg.

    • HI: 92°F
    • LO: 69°F
    • Rainfall: 68% | est. 0.18in
    • Snowfall: 0%
    • Wind
      13 mph
    • Humidity
      75% avg.
    • UV Index
      7.1
    • Air Quality
      Good
    • Sunrise
      06:43 AM
    • Sunset
      07:03 PM
    • Moonrise
      02:52 PM
    • Moonset
      11:44 PM
    • Moon Phase
      First Quarter
Atwater, IL Weather Forecast - 9-19-26 - Overcast

Overcast

Sat 9-19-26

Overcast with a high of 86°F and a low of 75°F. There might be light rainfall having a 12% chance with an estimated 0in. Wind will be moderate, blowing around 14mph on average and gusts of 28mph at 12 AM. The humidity will be on the higher side, averaging about 64%, the maximum being 92% at 2 AM and 44% being its lowest at 2 PM. Barometric pressure is its highest of 29.98inHg at 12 AM, a lowest point of 29.83inHg at 10 PM with an avg 29.9inHg.

    • HI: 86°F
    • LO: 75°F
    • Rainfall: 12% | est. 0in
    • Snowfall: 0%
    • Wind
      13.2 mph
    • Humidity
      64% avg.
    • UV Index
      4.6
    • Air Quality
      Good
    • Sunrise
      06:43 AM
    • Sunset
      07:01 PM
    • Moonrise
      03:38 PM
    • Moonset
      Does not set today
    • Moon Phase
      First Quarter
Atwater, IL Weather Forecast - 9-20-26 - Scattered Showers

Scattered Showers

Sun 9-20-26

Scattered Showers with a high of 92°F and a low of 65°F. Rainfall expected to have a 57% chance with an estimated 0.05in. Wind will be moderate, blowing around 15mph on average and gusts of 26mph at 8 PM. The humidity will be on the higher side, averaging about 63%, the maximum being 95% at 11 PM and 34% being its lowest at 5 PM. Barometric pressure is its highest of 29.93inHg at 11 PM, a lowest point of 29.77inHg at 7 PM with an avg 29.84inHg.

    • HI: 92°F
    • LO: 65°F
    • Rainfall: 57% | est. 0.05in
    • Snowfall: 0%
    • Wind
      14.3 mph
    • Humidity
      63% avg.
    • UV Index
      6.5
    • Air Quality
      Good
    • Sunrise
      06:44 AM
    • Sunset
      06:59 PM
    • Moonrise
      04:15 PM
    • Moonset
      12:43 AM
    • Moon Phase
      Waxing Gibbous
Atwater, IL Weather Forecast - 9-21-26 - Light Rain Shower

Light Rain Shower

Mon 9-21-26

Light Rain Shower with a high of 82°F and a low of 62°F. Rainfall expected to have a 75% chance with an estimated 0.21in. Wind will be moderate, blowing around 15mph on average and gusts of 30.7mph at 4 AM. The humidity will be on the higher side, averaging about 79%, the maximum being 96% at 6 AM and 57% being its lowest at 4 PM. Barometric pressure is its highest of 30inHg at 8 AM, a lowest point of 29.77inHg at 1 AM with an avg 29.92inHg.

    • HI: 82°F
    • LO: 62°F
    • Rainfall: 75% | est. 0.21in
    • Snowfall: 0%
    • Wind
      14.1 mph
    • Humidity
      79% avg.
    • UV Index
      6
    • Air Quality
      Good
    • Sunrise
      06:45 AM
    • Sunset
      06:58 PM
    • Moonrise
      04:46 PM
    • Moonset
      01:45 AM
    • Moon Phase
      Waxing Gibbous
Atwater, IL Weather Forecast - 9-22-26 - Sunny

Sunny

Tue 9-22-26

Sunny with a high of 81°F and a low of 58°F. There's a very small chance of rainfall, only about 5%. Winds will be light at 8mph and gusts of 10.5mph at 10 AM. The humidity will be on the higher side, averaging about 68%, the maximum being 94% at 5 AM and 39% being its lowest at 4 PM. Barometric pressure is its highest of 30.05inHg at 10 AM, a lowest point of 29.96inHg at 12 AM with an avg 30.01inHg.

    • HI: 81°F
    • LO: 58°F
    • Rainfall: 5%
    • Snowfall: 0%
    • Wind
      7.6 mph
    • Humidity
      68% avg.
    • UV Index
      7
    • Air Quality
      TBA
    • Sunrise
      06:46 AM
    • Sunset
      06:56 PM
    • Moonrise
      05:13 PM
    • Moonset
      02:47 AM
    • Moon Phase
      Waxing Gibbous

This 5-Day weather forecast is valid for ZIP code 62511, accurately covering the area of Atwater, IL.

Currently

Sunny 94°F
30.13 inHg.
Barometer
37%
Humidity
WSW 14.8 mph
Wind
Sunny

National Outlook

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