May weather forecastEureka, CA
May
Weather in May
May, the last month of the spring in Eureka, is also a moderate month, with an average temperature ranging between max 59.9°F (15.5°C) and min 46.4°F (8°C).Temperature
The average high-temperature is a still moderate 59.9°F (15.5°C) in May, hardly different from the 55.9°F (13.3°C) recorded in April. Throughout May, an average low-temperature of 46.4°F (8°C) is expected.Humidity
In May, the average relative humidity in Eureka is 81%.Rainfall
In Eureka, in May, during 5.5 rainfall days, 0.67" (17mm) of precipitation is typically accumulated. In Eureka, during the entire year, the rain falls for 77.3 days and collects up to 8.58" (218mm) of precipitation.Snowfall
In Eureka, snow does not fall in January, March through December.Daylight
In May, the average length of the day is 14h and 29min.On the first day of the month, sunrise is at 6:13 am and sunset at 8:13 pm. On the last day of May, sunrise is at 5:47 am and sunset at 8:41 pm PDT.
Sunshine
In Eureka, the average sunshine in May is 10h.UV index
In Eureka, the average daily maximum UV index in May is 4. A UV Index estimate of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV radiation for the ordinary person.Note: A maximum daily UV index of 4 during May morphs into the following directions:
Exercise care. People with light skin might get burns in fewer than 30 minutes. When the Sun's UV radiation is most intense during midday, it's best to find shade and limit exposure. Protect your eyes, ears, face, and neck from the Sun by wearing a wide-brimmed hat.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
Eureka, CA
- Average high temperature in May: 59.9°F
The warmest month (with the highest average high temperature) is August (68.4°F).
The months with the lowest average high temperature are February and December (52.9°F).
- Average low temperature in May: 46.4°F
The month with the highest average low temperature is August (52.9°F).
The coldest month (with the lowest average low temperature) is February (42.4°F).
Average pressure in May
Eureka, CA
- Average pressure in May: 30.02"Hg
The month with the highest atmospheric pressure is January (30.13"Hg).
The month with the lowest atmospheric pressure is August (29.96"Hg).
Average wind speed in May
Eureka, CA
- Average wind speed in May: 8.2mph
The windiest month (with the highest average wind speed) is March (9mph).
The calmest month (with the lowest average wind speed) is August (6.2mph).
Average humidity in May
Eureka, CA
- Average humidity in May: 81%
The month with the highest relative humidity is March (82%).
The month with the lowest relative humidity is October (76%).
Average rainfall in May
Eureka, CA
- Average rainfall in May: 0.67"
The wettest month (with the highest rainfall) is December (1.73").
The driest month (with the least rainfall) is July (0.08").
Average rainfall days in May
Eureka, CA
- Average rainfall days in May: 5.5 days
The month with the highest number of rainy days is March (11.2 days).
The month with the least rainy days is August (1.7 days).
Average snowfall in May
Eureka, CA
- Average snowfall in May: 0"
The month with the highest snowfall is February (0.04").
The months with the least snowfall are January, March, April, May, June, July, August, September, October, November and December (0").
Average snowfall days in May
Eureka, CA
- Average snowfall days in May: 0 days
The months with the highest number of snowfall days are February and December (0.1 days).
The months with the least snowfall days are January, March, April, May, June, July, August, September, October and November (0 days).
Average daylight in May /
Average sunshine in May
Eureka, CA
- Average daylight in May: 14h and 30min
The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 18min).
- Average sunshine in May: 10h and 0min
The months with the most sunshine are July and August (Average sunshine: 11h and 36min).
The month with the least sunshine is December (Average sunshine: 5h and 12min).
Average sunshine days in May
Eureka, CA
- Average sunshine days in May: 23.3 days
The month with the most sunshine days is July (27.7 days).
The month with the least sunshine days is March (17.9 days).
Average UV index in May
Eureka, CA
- Average UV index in May: 4
The month with the highest UV index is July (UV index 5).
The months with the lowest UV index are January, February, March, November and December (UV index 3).
Average cloud cover in May
Eureka, CA
- Average cloud cover in May: 34
The month with the most cloud cover is March (Cloud cover 46).
The months with the least cloud cover are July and August (Cloud cover 16).
Average visibility in May
Eureka, CA
- Average visibility in May: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, September, October, November and December (6mi).
The month with the lowest visibility is August (5mi).
