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Eureka, MO Weather Tomorrow

For a complete weather outlook, review tomorrow's Eureka forecast and the following 5 days with 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 for the Eureka area and around St. Louis county, Missouri.
Updated: Thu Oct 29th 2026 6:30 PM CDT
Eureka, MO Weather – 10-29 – Sunny
81° / 56°
Sunny
Eureka could see sunshine with daytime highs of 81°F and nighttime lows near 56°F. There's a moderate 39% chance of rainfall with an estimated 0.04in. Winds will be light at 7mph and gusts of 10.7mph at 8 PM. The humidity will be on the higher side, averaging about 67%, the maximum being 92% at 10 PM and 76% being its lowest at 7 PM. Barometric pressure is its highest of 30.17inHg at 10 PM, a lowest point of 30.12inHg at 7 PM with an avg 30.14inHg.
Eureka, MO Weather – 10-30 – Overcast
77° / 59°

Weather Tomorrow

Overcast
In Eureka, it will be overcast with highs near 77°F and lows around 59°F. There's a moderate 36% chance of rainfall with an estimated 0.01in. Winds will be light at 7mph and gusts of 16.8mph at 8 AM. The humidity will be on the higher side, averaging about 73%, the maximum being 96% at 7 AM and 49% being its lowest at 3 PM. Barometric pressure is its highest of 30.24inHg at 10 AM, a lowest point of 30.15inHg at 3 PM with an avg 30.19inHg.
Eureka, MO Weather – 10-31 – Overcast
70° / 59°
Overcast
Daytime highs will reach 70°F with lows dropping to 59°F in Eureka, where it will be overcast. There's a moderate 40% chance of rainfall with an estimated 0.02in. Winds will be light at 8mph and gusts of 16.1mph at 11 PM. The humidity will be on the higher side, averaging about 65%, the maximum being 89% at 11 PM and 50% being its lowest at 2 PM. Barometric pressure is its highest of 30.25inHg at 10 AM, a lowest point of 30.17inHg at 5 PM with an avg 30.2inHg.
Eureka, MO Weather – 11-1 – Scattered Showers
68° / 59°
Scattered Showers
In Eureka, on and off showers are set to occur with highs near 68°F and lows around 59°F. Rainfall predicted to have a 72% chance with an estimated 0.05in. Winds will be light at 7mph and gusts of 17.5mph at 12 AM. High humidity with average of 87% is anticipated, the maximum being 97% at 6 AM and 72% being its lowest at 4 PM. Barometric pressure is its highest of 30.22inHg at 9 AM, a lowest point of 30.09inHg at 5 PM with an avg 30.15inHg.
Eureka, MO Weather – 11-2 – Overcast
70° / 59°
Overcast
Daytime highs will reach 70°F with lows dropping to 59°F in Eureka, where skies will be overcast. There's a moderate 44% chance of rainfall with an estimated 0.01in. Wind will be moderate, blowing around 11mph on average and gusts of 28.2mph at 11 PM. High humidity with average of 85% is anticipated, the maximum being 94% at 5 AM and 70% being its lowest at 11 AM. Barometric pressure is its highest of 30.14inHg at 12 AM, a lowest point of 29.91inHg at 5 PM with an avg 30inHg.
Eureka, MO Weather – 11-3 – Overcast
73° / 62°
Overcast
In Eureka, it will be overcast with highs near 73°F and lows around 62°F. The chance of rain is 82% with an estimated 0.24in. Wind will be moderate, blowing around 15mph on average and gusts of 30.9mph at 1 AM. The humidity will be on the higher side, averaging about 76%, the maximum being 89% at 12 AM and 64% being its lowest at 3 PM. Barometric pressure is its highest of 29.9inHg at 2 AM, a lowest point of 29.74inHg at 11 PM with an avg 29.83inHg.

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