The percentage of hours in which the mean wind direction is from each of the four cardinal wind directions, excluding hours in which the mean wind speed is less than. All other weather data, including cloud cover, precipitation, wind speed and direction, and solar flux, come from NASA's MERRA-2 Modern-Era Retrospective Analysis . Over the course of the year, the temperature typically varies from 42°F to 64°F and is rarely below 33°F or above 71°F . The percentage of time spent in various temperature bands. While having the tremendous advantages of temporal and spatial completeness, these reconstructions: (1) are based on computer models that may have model-based errors, (2) are coarsely sampled on a 50 km grid and are therefore unable to reconstruct the local variations of many microclimates, and (3) have particular difficulty with the weather in some coastal areas, especially small islands. Based on growing degree days alone, the first spring blooms in Eureka should appear around February 15, only rarely appearing before January 26 or after April 1. 6.84 inch: 8.12 inch: Total snowfall Total snowfall : 0.00 inch: 0 inch: Highest max temperature Highest max temp. The vertical gray bars (new Moons) and blue bars (full Moons) indicate key Moon phases. The figure below shows you a compact characterization of the entire year of hourly average temperatures. From bottom (most yellow) to top (most gray), the color bands indicate: full daylight, twilight (civil, nautical, and astronomical), and full night. Daylight saving time (DST) is observed in Eureka during 2020, starting in the spring on March 8, lasting 7.8 months, and ending in the fall on November 1. Weather Underground provides local & long-range weather forecasts, weatherreports, maps & tropical weather conditions for the Eureka area. Persistant offshore winds will keep fire weather threats Critical in Southern California and the Lower Colorado River Basin. The stations contributing to this reconstruction are: Arcata-Eureka Airport (94%, 20 kilometers, north) and Lonnie Pool Field Weaverville Airport (6%, 105 kilometers, east). The average daily shortwave solar energy reaching the ground per square meter (orange line), with 25th to 75th and 10th to 90th percentile bands. The US average is 28 inches of snow per year. The predominant average hourly wind direction in Eureka varies throughout the year. Based on this categorization, the most common form of precipitation throughout the year is rain alone, with a peak probability of 46% on February 28. The earliest sunrise is at 5:44 AM on June 14, and the latest sunrise is 2 hours, 2 minutes later at 7:46 AM on October 31. The estimated value at Eureka is computed as the weighted average of the individual contributions from each station, with weights proportional to the inverse of the distance between Eureka and a given station. Names, locations, and time zones of places and some airports come from the GeoNames Geographical Database . The average of mean hourly wind speeds (dark gray line), with 25th to 75th and 10th to 90th percentile bands. Pressure: 37.78 "Hg. : Average precipitation in inch - Days precip. Within 50 miles contains large variations in elevation (7,359 feet). ZFPEKA. precip. 032 FPUS56 KEKA 302138. On August 2, the clearest day of the year, the sky is clear, mostly clear, or partly cloudy 89% of the time, and overcast or mostly cloudy 11% of the time. Eureka, California gets 46 inches of rain, on average, per year. : Hours of sunshine, Hi : Average high in ºF - Lo : Average low in ºF - Pre. The number of hours during which the Sun is visible (black line). Snow in the 4 Corners … Maps are © Esri, with data from National Geographic, Esri, DeLorme, NAVTEQ, UNEP-WCMC, USGS, NASA, ESA, METI, NRCAN, GEBCO, NOAA, and iPC. Among wet days, we distinguish between those that experience rain alone, snow alone, or a mixture of the two. Eureka averages 1 inches of snow per year. Land Use data comes from the Global Land Cover SHARE database , published by the Food and Agriculture Organization of the United Nations. The rainy period of the year lasts for 9.4 months, from September 7 to June 19, with a sliding 31-day rainfall of at least 0.5 inches. The chance of a wet day peaks at 46% on December 3. Growing degree days are a measure of yearly heat accumulation used to predict plant and animal development, and defined as the integral of warmth above a base temperature, discarding any excess above a maximum temperature. Cover band, categorized by the percentage of time spent in each cloud Cover band categorized... 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