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Saint Elmo, IL Weather Tomorrow

Your Saint Elmo weather tomorrow forecast is paired with a detailed 5 day outlook featuring precipitation potential, daytime and nighttime forecasts, temperature highs and lows in Fahrenheit and Celsius, sunrise and sunset times, cloud cover, wind chill, wind speed, and wind direction across the Saint Elmo area and around Fayette county, Illinois.
Updated: Sat Aug 29th 2026 9:15 AM CDT
Saint Elmo, IL Weather – 8-29 – Overcast
87° / 61°
Overcast
Daytime highs will reach 87°F with lows dropping to 61°F in Saint Elmo, where it will be overcast. There's a very small chance of rainfall, only about 8%. Winds will be light at 9mph and gusts of 23.3mph at 11 PM. The humidity will be on the higher side, averaging about 63%, the maximum being 63% at 8 PM and 34% being its lowest at 3 PM. Barometric pressure is its highest of 30.13inHg at 10 AM, a lowest point of 30.01inHg at 5 PM with an avg 30.05inHg.
Saint Elmo, IL Weather – 8-30 – Overcast
95° / 69°

Weather Tomorrow

Overcast
Overcast is in the forecast for Saint Elmo, with a high of 95°F and a low of 69°F. There's a very small chance of rainfall, only about 6%. Wind will be moderate, blowing around 14mph on average and gusts of 31.1mph at 11 PM. Humidity levels should be comfortable, sitting around 49% on average, the maximum being 72% at 6 AM and 24% being its lowest at 4 PM. Barometric pressure is its highest of 30.04inHg at 11 AM, a lowest point of 29.91inHg at 7 PM with an avg 29.98inHg.
Saint Elmo, IL Weather – 8-31 – Sunny
99° / 76°
Sunny
Saint Elmo may see sunshine, with daytime highs of 99°F and overnight lows near 76°F. There's a very small chance of rainfall, only about 4%. Wind will be moderate, blowing around 17mph on average and gusts of 36.7mph at 5 AM. Humidity levels should be comfortable, sitting around 45% on average, the maximum being 59% at 7 AM and 27% being its lowest at 4 PM. Barometric pressure is its highest of 30inHg at 8 AM, a lowest point of 29.87inHg at 5 PM with an avg 29.94inHg.
Saint Elmo, IL Weather – 9-1 – Sunny
102° / 80°
Sunny
A sunny day is in the forecast for Saint Elmo, with a high of 102°F and a low of 80°F. There's a very small chance of rainfall, only about 2%. Wind will be moderate, blowing around 16mph on average and gusts of 36.7mph at 3 AM. Humidity levels should be comfortable, sitting around 42% on average, the maximum being 60% at 7 AM and 25% being its lowest at 4 PM. Barometric pressure is its highest of 29.98inHg at 9 AM, a lowest point of 29.88inHg at 5 PM with an avg 29.93inHg.
Saint Elmo, IL Weather – 9-2 – Sunny
101° / 79°
Sunny
In Saint Elmo, bright and sunny conditions with highs near 101°F and lows around 79°F. There's a very small chance of rainfall, only about 1%. Wind will be moderate, blowing around 17mph on average and gusts of 33.6mph at 1 AM. Humidity levels should be comfortable, sitting around 42% on average, the maximum being 62% at 7 AM and 25% being its lowest at 3 PM. Barometric pressure is its highest of 29.97inHg at 11 AM, a lowest point of 29.87inHg at 7 PM with an avg 29.92inHg.
Saint Elmo, IL Weather – 9-3 – Sunny
103° / 80°
Sunny
Saint Elmo could see sunshine with daytime highs of 103°F and nighttime lows near 80°F. There's a very small chance of rainfall, only about 1%. Wind will be moderate, blowing around 12mph on average and gusts of 27.3mph at 12 AM. Humidity levels should be comfortable, sitting around 40% on average, the maximum being 53% at 7 AM and 23% being its lowest at 1 PM. Barometric pressure is its highest of 29.96inHg at 10 AM, a lowest point of 29.89inHg at 7 PM with an avg 29.93inHg.

Currently

Cloudy 73°F
30.14 inHg.
Barometer
61%
Humidity
SE 11.2 mph
Wind
Cloudy

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