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Decatur, IL Weather Forecast
Decatur, IL Weather Forecast Dated: 527 PM Thu Aug 13 2026 (Decatur Time)
Thu, 13th Lo: 20°C68°F Hi: 36°C96°F |
Sunny Thursday, temperatures as high as 96°F36°C, low temperature around 68°F20°C, chance of rain 9%, wind out of the SE 11 mph18 km/h. Barometric pressure 29.88 in1012 mb, visibility 6 mi9 km, humidity 76%. |
| Fri, 14th Lo: 22°C72°F Hi: 32°C90°F |
Sunny Friday, temperatures as high as 90°F32°C, low temperature around 72°F22°C, chance of rain 36%, wind out of the ESE 12 mph20 km/h. Barometric pressure 29.94 in1014 mb, visibility 6 mi9 km, humidity 80%. |
| Sat, 15th Lo: 23°C74°F Hi: 35°C94°F |
Sunny Saturday, temperatures as high as 94°F35°C, low temperature around 74°F23°C, chance of rain 6%, wind out of the SW 15 mph23 km/h. Barometric pressure 29.97 in1015 mb, visibility 6 mi10 km, humidity 72%. |
Sun, 16th Lo: 22°C71°F Hi: 31°C88°F |
Partly Cloudy Sunday, temperatures as high as 88°F31°C, low temperature around 71°F22°C, chance of rain 64%, wind out of the N 11 mph18 km/h. Barometric pressure 30 in1016 mb, visibility 6 mi9 km, humidity 83%. |
| Mon, 17th Lo: 18°C64°F Hi: 26°C80°F |
Sunny Monday, temperatures as high as 80°F26°C, low temperature around 64°F18°C, chance of rain 64%, wind out of the NE 11 mph17 km/h. Barometric pressure 30.03 in1017 mb, visibility 5 mi8 km, humidity 79%. |
| Tue, 18th Lo: 15°C58°F Hi: 29°C84°F |
Sunny Tuesday, temperatures as high as 84°F29°C, low temperature around 58°F15°C, chance of rain 6%, wind out of the SE 7 mph11 km/h. Barometric pressure 29.97 in1015 mb, visibility 6 mi10 km, humidity 71%. |
| Wed, 19th Lo: 19°C65°F Hi: 25°C76°F |
Sunny Wednesday, temperatures as high as 76°F25°C, low temperature around 65°F19°C, chance of rain 70%, wind out of the SE 7 mph12 km/h. Barometric pressure 29.88 in1012 mb, visibility 6 mi9 km, humidity 82%. |
| Thu, 20th Lo: 21°C69°F Hi: 31°C88°F |
Sunny Thursday, temperatures as high as 88°F31°C, low temperature around 69°F21°C, chance of rain 10%, wind out of the ESE 11 mph18 km/h. Barometric pressure 29.83 in1010 mb, visibility 6 mi10 km, humidity 79%. |
| Fri, 21st Lo: 25°C76°F Hi: 37°C98°F |
Sunny Friday, temperatures as high as 98°F37°C, low temperature around 76°F25°C, chance of rain 2%, wind out of the SW 16 mph26 km/h. Barometric pressure 29.8 in1009 mb, visibility 6 mi10 km, humidity 51%. |
| Sat, 22nd Lo: 20°C67°F Hi: 30°C85°F |
Sunny Saturday, temperatures as high as 85°F30°C, low temperature around 67°F20°C, chance of rain 10%, wind out of the NNE 11 mph18 km/h. Barometric pressure 30 in1016 mb, visibility 6 mi10 km, humidity 76%. |
| Sun, 23rd Lo: 16°C61°F Hi: 27°C81°F |
Sunny Sunday, temperatures as high as 81°F27°C, low temperature around 61°F16°C, chance of rain 4%, wind out of the NE 11 mph17 km/h. Barometric pressure 30.12 in1020 mb, visibility 6 mi9 km, humidity 64%. |
| Mon, 24th Lo: 16°C60°F Hi: 31°C89°F |
Sunny Monday, temperatures as high as 89°F31°C, low temperature around 60°F16°C, chance of rain 5%, wind out of the S 7 mph11 km/h. Barometric pressure 30.06 in1018 mb, visibility 6 mi9 km, humidity 68%. |
| Tue, 25th Lo: 19°C65°F Hi: 35°C96°F |
Sunny Tuesday, temperatures as high as 96°F35°C, low temperature around 65°F19°C, chance of rain 3%, wind out of the SW 6 mph10 km/h. Barometric pressure 30.06 in1018 mb, visibility 6 mi10 km, humidity 61%. |
| Wed, 26th Lo: 21°C70°F Hi: 36°C97°F |
Sunny Wednesday, temperatures as high as 97°F36°C, low temperature around 70°F21°C, chance of rain 2%, wind out of the SSW 10 mph16 km/h. Barometric pressure 30.03 in1017 mb, visibility 6 mi10 km, humidity 56%. |
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