Weathermondo.com
United StatesThe climate of Eureka
The current climate in Eureka features temperatures ranging from a high of 19°C to a low of 13°C throughout the year. The average yearly temperature is around 16°C. At night, temperatures in the colder months average around 4°C and in the warmer months around 12°C.
Average temperatures and precipitation
This chart shows the average monthly maximum and minimum temperatures (in degrees Celsius) and average monthly rainfall (in millimeters) for Eureka, California.
Temperature records
The highest temperature recorded in Eureka in recent years was 33°C in September 2017. The lowest daytime temperature recorded was 2°C in February 2023.
Rainfall amount
On average, Eureka receives 1362 mm of precipitation each year. For comparison, New York gets 1142 mm of precipitation annually.
Best time to visit Eureka?
The best time to visit Eureka for sunny weather is July through October. During this period, you'll have nice temperatures and not too much rain, making it a great time to visit Eureka. In the other months of the year, there's too much rain or the temperature isn't ideal for a visit if you want sunny and pleasant weather.
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Climate Table of Eureka
The climate table of Eureka shows the average temperatures, rainfall, and UV index per month. The table provides an overview of the average day and night temperatures in degrees Celsius, the total amount of rainfall in millimeters, the total snowfall in centimeters, and the UV index for each month. Rainfall is always measured as water, even if it's snow or hail.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
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| Temp. max (°C) | 13 | 13 | 14 | 14 | 15 | 17 | 18 | 19 | 19 | 18 | 15 | 13 |
| Temp. min (°C) | 5 | 5 | 6 | 7 | 9 | 11 | 12 | 13 | 11 | 8 | 7 | 5 |
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| Precipitation (mm) | 270 | 142 | 226 | 101 | 64 | 18 | 3,2 | 8,9 | 49 | 92 | 103 | 284 |
| UV Index | 4 | 5 | 4 | 6 | 7 | 8 | 6 | 8 | 5 | 5 | 3 | 4 |
Click on the month name to see more weather details, like daily averages, temperatures, and precipitation for the past years in that month.
Temperature charts
These charts display the average temperatures in Eureka, California. The temperatures are shown in degrees Celsius and are calculated based on data from the past 10 years.
Average Temperature per Month in Eureka
Yearly Temperature in Eureka
Precipitation charts
These charts show the average amount of precipitation in Eureka, California. Precipitation is always measured as water, even when it falls as snow or hail. The amount of precipitation is displayed in millimeters, while snowfall is shown in centimeters.
Average Precipitation per Month in Eureka
Total Yearly Precipitation in Eureka
UV index chart
This chart shows the average UV index per month in Eureka, California. The UV index indicates the intensity of ultraviolet radiation and ranges from 0 to a maximum of 11.
Average UV Index per Month in Eureka
Weather experiences in Eureka
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Average weather in Eureka by month
Click on a month below to see detailed weather info for Eureka. Based on historical weather data, you can see the average temperature, precipitation, wind, and UV index for each day of the month.