United StatesThe weather in January in Eureka
It's cool in January in Eureka with an average temperature of 13°C. Temperatures this month range from a low of 10°C to a high of 15°C. At night, you can expect temperatures between 3°C and 8°C.
Looking for sun? January isn’t a good month to be in Eureka. There’s too much chance of rain this month.
Average temperatures and precipitation
This chart shows the average daily maximum and minimum temperatures (in degrees Celsius) and precipitation (in millimeters) in January for Eureka, California. A low precipitation value usually indicates little to no rainfall on that day in recent years, while a higher value suggests more frequent rainfall.
Temperature records
With 25°C in 2022, Eureka reached the highest temperature in January over the past 10 years. The lowest daytime temperature in this month was 5°C in 2017. The extreme nighttime temperatures ranged from a lowest recorded value of -2°C to a highest value of 14°C.
Water temperature
The water temperature at Eureka is 10°C this month. This is too cold to swim without protective gear.
Rainfall amount
In January, there is an average of 269 mm of precipitation, spread over 23 days. The wind speed is around 4 Bft, mostly coming from the Southeast.
Daily weather in January for Eureka
Click on any day in January to get detailed info about the usual weather on that day in Eureka. Check out the historical temperatures and precipitation over the past 10 years on this day.
January weather comparison
| Eureka | New York | |
|---|---|---|
| Average temperature | 13°C | 5°C |
| Max. temperature | 15°C | 11°C |
| Min. temperature | 3°C | -5°C |
| Total precipitation | 269 mm | 97 mm |
| Rainy days | 23 days | 12 days |
Start of January
The month of January starts in Eureka with cool temps, averaging around 13°C during the day and nights around 6°C.
Mid January
By mid-January, daytime temps rise to around 14°C, with nights around 7°C. There’s a high chance of precipitation during this time.
End of January
By the end of January, the average daytime temperature in Eureka is around 14°C, while nighttime temps are about 6°C. Expect regular precipitation, but if you’re lucky, you’ll also get some dry and sunny days.
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UV index
The UV index is a maximum of 5 this month. That's a moderate value on the intensity scale of 1 to 11. Unprotected skin can burn in about 30 minutes.
Check out the climate of Eureka for all months and discover the best travel time
Temperature charts
These charts show the average temperatures in January in Eureka, California. The temperatures are shown in degrees Celsius and are calculated based on data from the past 10 years.
Daily Temperature in January in Eureka
Temperature in January in Eureka over the years
Precipitation charts
These charts show the average amount of precipitation in January 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.
Daily Precipitation in January in Eureka
Total precipitation in January in Eureka over the years
Daily UV index in January in Eureka
This chart shows the average daily UV index in January in Eureka, with the UV index ranging from 0 to a maximum of 11. The bottom of the chart shows the days of the month. Based on historical data, this chart provides an idea of the daily UV radiation levels you can expect.
Weather experiences in January 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.