Eureka (MO) Weather & Climate: Best Time to Visit
Average temperatures, rainfall, sunshine and the best time to visit Eureka.
Climate overview of Eureka
Eureka, Missouri, United States of America, sees big temperature differences between seasons, with July peaking at 31°C (88°F) and January dropping to 5°C (41°F).
The city receives considerable rain/snowfall, with around 1076 mm (42 in) annually. April is the wettest month. Sunshine peaks in July, when the city sees around 10.4 hours of sunshine per day.
Eureka Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Eureka — and find the best time to visit.
Monthly Temperature in Eureka
Visitors to Eureka can expect significant temperature changes throughout the year. Typically, average maximum daytime temperatures range from a very warm 31°C (88°F) in July to a chilly 5°C (41°F) in the coolest month, January.
Nights vary from 20°C (68°F) in July to around -6°C (21°F) during the colder months.
Check out our detailed temperature page for more information.
Temperature ranges by month
Rainfall in Eureka
Eureka is known for its substantial rain/snowfall, with annual precipitation reaching 1076 mm (42 in). The climate in Eureka shows significant variation throughout the year. Expect high rainfall in April, the wettest month, with an average of 123 mm (4.8 in) of precipitation over 12 rainy days.
In contrast, the driest month January offers drier and sunnier days, with around 50 mm (2 in) of snow/rainfall over 7 snowy/rainy days. For more details, please visit our Eureka Precipitation page.
The mean monthly precipitation over the year, including rain, hail, and snow
The average number of days each month with precipitation
Sunshine Hours in Eureka
For those who appreciate different seasons, Eureka serves as an ideal destination. Expect longer, more sun-filled days in July with an average of 10.4 hours of sunshine daily, and embrace the darker days in December, offering only 4.3 hours of daily sunlight.
Visit our detailed sunshine hours page for more information.
Monthly hours of sunshine
Daily hours of sunshine
Daily percentage of sunshine
Humidity in Eureka by Month
The relative humidity is high throughout the year in Eureka.
The city experiences its highest humidity in December, reaching 74%. In April, the humidity drops to its lowest level at 63%. What does this mean? Read our detailed page on humidity levels for further details.
Relative humidity over the year
Best Time to Visit Eureka
The weather does bring rainfall during this period, between 81 mm (3.2 in) and 123 mm (4.8 in). Wondering where to travel based on your weather preferences? Our recommendation tool helps you find destinations with your ideal climate conditions. Use our weather planner to find your perfect destination.
Frequently asked questions about the climate in Eureka
What is the best time to visit Eureka?
October typically offers the most optimal weather in Eureka. In contrast, January, February and December tend to have less optimal conditions.
What temperatures can I expect in Eureka?
Daytime highs range from 5°C (41°F) in January to 31°C (88°F) in July. Nighttime lows range from -6°C (21°F) to 20°C (68°F). Temperatures vary considerably through the year.
How much rain does Eureka get?
Annual rainfall is around 1076 mm (42 in). April is the wettest month with 123 mm (4.8 in), while January is the driest with 50 mm (2 in).
How sunny is Eureka?
Eureka receives around 2,594 hours of sunshine per year. July is the sunniest month with 311 hours, while December is the cloudiest with just 128 hours. Overall, Eureka enjoys abundant sunshine.
Eureka 3-Day Forecast
Eureka (MO) 3-Day Forecast
Eureka on the map
Eureka is highlighted — select any city to see its climate.
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