Average Weather in Ferndale California, United States
In Ferndale, the summers are short, cool, dry, and mostly clear and the winters are long, cold, wet, windy, and partly cloudy. Over the course of the year, the temperature typically varies from 42°F to 62°F and is rarely below 33°F or above 69°F.
Based on the tourism score, the best time of year to visit Ferndale for warm-weather activities is from early July to mid September.
The warm season lasts for 2.1 months, from August 11 to October 15, with an average daily high temperature above 61°F. The hottest day of the year is September 11, with an average high of 62°F and low of 49°F.
The cool season lasts for 4.2 months, from December 1 to April 7, with an average daily high temperature below 56°F. The coldest day of the year is December 23, with an average low of 42°F and high of 55°F.
Average High and Low Temperature
The figure below shows you a compact characterization of the entire year of hourly average temperatures. The horizontal axis is the day of the year, the vertical axis is the hour of the day, and the color is the average temperature for that hour and day.
Average Hourly Temperature
In Ferndale, the average percentage of the sky covered by clouds experiences extreme seasonal variation over the course of the year.
The clearer part of the year in Ferndale begins around June 1 and lasts for 4.5 months, ending around October 18. On August 3, 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.
The cloudier part of the year begins around October 18 and lasts for 7.4 months, ending around June 1. On January 9, the cloudiest day of the year, the sky is overcast or mostly cloudy 67% of the time, and clear, mostly clear, or partly cloudy 33% of the time.
Cloud Cover Categories
A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. The chance of wet days in Ferndale varies significantly throughout the year.
The wetter season lasts 6.1 months, from October 23 to April 26, with a greater than 23% chance of a given day being a wet day. The chance of a wet day peaks at 46% on December 14.
The drier season lasts 5.9 months, from April 26 to October 23. The smallest chance of a wet day is 1% on August 3.
Among wet days, we distinguish between those that experience rain alone, snow alone, or a mixture of the two. Based on this categorization, the most common form of precipitation throughout the year is rain alone, with a peak probability of 46% on December 14.
Daily Chance of Precipitation
To show variation within the months and not just the monthly totals, we show the rainfall accumulated over a sliding 31-day period centered around each day of the year. Ferndale experiences extreme seasonal variation in monthly rainfall.
The rainy period of the year lasts for 9.3 months, from September 9 to June 19, with a sliding 31-day rainfall of at least 0.5 inches. The most rain falls during the 31 days centered around December 14, with an average total accumulation of 9.2 inches.
The rainless period of the year lasts for 2.7 months, from June 19 to September 9. The least rain falls around July 30, with an average total accumulation of 0.1 inches.
Average Monthly Rainfall
The length of the day in Ferndale varies significantly over the course of the year. In 2018, the shortest day is December 21, with 9 hours, 16 minutes of daylight; the longest day is June 21, with 15 hours, 5 minutes of daylight.
Hours of Daylight and Twilight
The earliest sunrise is at 5:45 AM on June 14, and the latest sunrise is 2 hours, 4 minutes later at 7:49 AM on November 3. The earliest sunset is at 4:49 PM on December 6, and the latest sunset is 4 hours, 2 minutes later at 8:51 PM on June 27.
Daylight saving time (DST) is observed in Ferndale during 2018, starting in the spring on March 11, lasting 7.8 months, and ending in the fall on November 4.
Sunrise & Sunset with Twilight and Daylight Saving Time
The perceived humidity level in Ferndale, as measured by the percentage of time in which the humidity comfort level is muggy, oppressive, or miserable, does not vary significantly over the course of the year, remaining a virtually constant 0% throughout.
Humidity Comfort Levels
The average hourly wind speed in Ferndale experiences mild seasonal variation over the course of the year.
The windier part of the year lasts for 3.0 months, from April 23 to July 24, with average wind speeds of more than 10.5 miles per hour. The windiest day of the year is June 23, with an average hourly wind speed of 11.9 miles per hour.
The calmer time of year lasts for 9.0 months, from July 24 to April 23. The calmest day of the year is October 6, with an average hourly wind speed of 9.1 miles per hour.
Average Wind Speed
The predominant average hourly wind direction in Ferndale varies throughout the year.
The wind is most often from the north for 8.6 months, from March 4 to November 23, with a peak percentage of 86% on July 18. The wind is most often from the south for 3.4 months, from November 23 to March 4, with a peak percentage of 41% on January 1.
Ferndale is located near a large body of water (e.g., ocean, sea, or large lake). This section reports on the wide-area average surface temperature of that water.The average water temperature does not vary significantly over the course of the year, remaining within 2°F of 53°F throughout.
Average Water Temperature
Best Time of Year to Visit
To characterize how pleasant the weather is in Ferndale throughout the year, we compute two travel scores.
The tourism score favors clear, rainless days with perceived temperatures between 65°F and 80°F. Based on this score, the best time of year to visit Ferndale for general outdoor tourist activities is from early July to mid September, with a peak score in the third week of August.
The beach/pool score favors clear, rainless days with perceived temperatures between 75°F and 90°F. Based on this score, the best time of year to visit Ferndale for hot-weather activities is from late September to early October.
For each hour between 8:00 AM and 9:00 PM of each day in the analysis period (1980 to 2016), independent scores are computed for perceived temperature, cloud cover, and total precipitation. Those scores are combined into a single hourly composite score, which is then aggregated into days, averaged over all the years in the analysis period, and smoothed.
Our cloud cover score is 10 for fully clear skies, falling linearly to 9 for mostly clear skies, and to 1 for fully overcast skies.
Our precipitation score, which is based on the three-hour precipitation centered on the hour in question, is 10 for no precipitation, falling linearly to 9 for trace precipitation, and to 0 for 0.04 inches of precipitation or more.
Our tourism temperature score is 0 for perceived temperatures below 50°F, rising linearly to 9 for 65°F, to 10 for 75°F, falling linearly to 9 for 80°F, and to 1 for 90°F or hotter.
Our beach/pool temperature score is 0 for perceived temperatures below 65°F, rising linearly to 9 for 75°F, to 10 for 82°F, falling linearly to 9 for 90°F, and to 1 for 100°F or hotter.
The growing season in Ferndale typically lasts for 11 months (333 days), from around January 25 to around December 24, rarely starting after March 5, or ending before November 21.
Time Spent in Various Temperature Bands and the Growing Season
Based on growing degree days alone, the first spring blooms in Ferndale should appear around February 15, only rarely appearing before January 26 or after April 8.
Growing Degree Days
The average daily incident shortwave solar energy experiences extreme seasonal variation over the course of the year.
The brighter period of the year lasts for 3.3 months, from May 16 to August 26, with an average daily incident shortwave energy per square meter above 6.8 kWh. The brightest day of the year is June 30, with an average of 8.1 kWh.
The darker period of the year lasts for 3.8 months, from November 1 to February 22, with an average daily incident shortwave energy per square meter below 2.9 kWh. The darkest day of the year is December 26, with an average of 1.6 kWh.
Average Daily Incident Shortwave Solar Energy
For the purposes of this report, the geographical coordinates of Ferndale are 40.576 deg latitude, -124.264 deg longitude, and 39 ft elevation.
The topography within 2 miles of Ferndale contains very significant variations in elevation, with a maximum elevation change of 988 feet and an average elevation above sea level of 192 feet. Within 10 miles contains very significant variations in elevation (2,602 feet). Within 50 miles contains large variations in elevation (5,866 feet).
The area within 2 miles of Ferndale is covered by cropland (49%) and trees (41%), within 10 miles by trees (34%) and water (26%), and within 50 miles by water (54%) and trees (30%).
This report illustrates the typical weather in Ferndale, based on a statistical analysis of historical hourly weather reports and model reconstructions from January 1, 1980 to December 31, 2016.
Temperature and Dew Point
There are 2 weather stations near enough to contribute to our estimation of the temperature and dew point in Ferndale.
For each station, the records are corrected for the elevation difference between that station and Ferndale according to the International Standard Atmosphere , and by the relative change present in the MERRA-2 satellite-era reanalysis between the two locations.
The estimated value at Ferndale is computed as the weighted average of the individual contributions from each station, with weights proportional to the inverse of the distance between Ferndale and a given station.
Time zones for aiports and weather stations are provided by AskGeo.com .