1. WeatherSpark.com
  2. United States
  3. California

Climate and Average Weather Year Round in Willits California, United States

In Willits, the summers are warm, arid, and mostly clear and the winters are cold, wet, and partly cloudy. Over the course of the year, the temperature typically varies from 35°F to 85°F and is rarely below 27°F or above 94°F.

Based on the tourism score, the best time of year to visit Willits for warm-weather activities is from late June to late August.

Climate in Willits

coldcoolcomfortablewarmhotwarmcoolcoldJanFebMarAprMayJunJulAugSepOctNovDecNowNow91%91%35%35%clearovercastprecipitation: 7.2 inprecipitation: 7.2 in0.0 in0.0 inmuggy: 0%muggy: 0%0%0%drydrytourism score: 6.7tourism score: 6.70.20.2
Willits weather by month. Click on each chart for more information.

Average Temperature in Willits

The hot season lasts for 3.2 months, from June 19 to September 25, with an average daily high temperature above 79°F. The hottest day of the year is July 29, with an average high of 85°F and low of 53°F.

The cool season lasts for 3.3 months, from November 17 to February 26, with an average daily high temperature below 58°F. The coldest day of the year is January 1, with an average low of 35°F and high of 51°F.

Average High and Low Temperature in Willits

Average High and Low Temperature in WillitshotcoolcoolJanFebMarAprMayJunJulAugSepOctNovDec0°F0°F10°F10°F20°F20°F30°F30°F40°F40°F50°F50°F60°F60°F70°F70°F80°F80°F90°F90°F100°F100°FJan 151°FJan 151°FJul 2985°FJul 2985°F35°F35°F53°F53°FJun 1979°FJun 1979°FSep 2579°FSep 2579°FNov 1758°FNov 1758°FFeb 2658°FFeb 2658°F50°F50°F48°F48°F39°F39°F39°F39°FNowNow
The daily average high (red line) and low (blue line) temperature, with 25th to 75th and 10th to 90th percentile bands. The thin dotted lines are the corresponding average perceived temperatures.

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 Willits

Average Hourly Temperature in WillitsJanFebMarAprMayJunJulAugSepOctNovDec12 AM12 AM4 AM4 AM8 AM8 AM12 PM12 PM4 PM4 PM8 PM8 PM12 AM12 AMNowNowvery coldvery coldvery coldvery coldcoldcoolcoolwarmcomfortable
frigid 15°F freezing 32°F very cold 45°F cold 55°F cool 65°F comfortable 75°F warm 85°F hot 95°F sweltering
The average hourly temperature, color coded into bands. The shaded overlays indicate night and civil twilight.

Yumbel, Chile (6,199 miles away) and Mansfield, Australia (7,807 miles) are the far-away foreign places with temperatures most similar to Willits (view comparison).

Compare Willits to another city:

Clouds

In Willits, 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 Willits begins around May 28 and lasts for 4.8 months, ending around October 20. On August 1, the clearest day of the year, the sky is clear, mostly clear, or partly cloudy 91% of the time, and overcast or mostly cloudy 9% of the time.

The cloudier part of the year begins around October 20 and lasts for 7.2 months, ending around May 28. On January 9, the cloudiest day of the year, the sky is overcast or mostly cloudy 65% of the time, and clear, mostly clear, or partly cloudy 35% of the time.

Cloud Cover Categories in Willits

Cloud Cover Categories in WillitsclearercloudiercloudierJanFebMarAprMayJunJulAugSepOctNovDec0%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%Aug 191%Aug 191%Jan 935%Jan 935%May 2863%May 2863%Oct 2064%Oct 2064%NowNowclearovercastmostly cloudypartly cloudymostly clear
0% clear 20% mostly clear 40% partly cloudy 60% mostly cloudy 80% overcast 100%
The percentage of time spent in each cloud cover band, categorized by the percentage of the sky covered by clouds.

Precipitation

A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. The chance of wet days in Willits varies significantly throughout the year.

The wetter season lasts 5.8 months, from October 26 to April 19, with a greater than 19% chance of a given day being a wet day. The chance of a wet day peaks at 38% on January 10.

The drier season lasts 6.2 months, from April 19 to October 26. The smallest chance of a wet day is 0% 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 37% on January 11.

Daily Chance of Precipitation in Willits

Daily Chance of Precipitation in WillitswetwetdryJanFebMarAprMayJunJulAugSepOctNovDec0%0%10%10%20%20%30%30%40%40%50%50%60%60%70%70%80%80%90%90%100%100%Jan 1038%Jan 1038%Aug 30%Aug 30%Jan 135%Jan 135%Oct 2619%Oct 2619%Apr 1919%Apr 1919%NowNowrain
The percentage of days in which various types of precipitation are observed, excluding trace quantities: rain alone, snow alone, and mixed (both rain and snow fell in the same day).

Rainfall

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. Willits experiences extreme seasonal variation in monthly rainfall.

The rainy period of the year lasts for 8.8 months, from September 19 to June 11, with a sliding 31-day rainfall of at least 0.5 inches. The most rain falls during the 31 days centered around December 15, with an average total accumulation of 7.2 inches.

The rainless period of the year lasts for 3.2 months, from June 11 to September 19. The least rain falls around July 31, with an average total accumulation of 0.0 inches.

Average Monthly Rainfall in Willits

The average rainfall (solid line) accumulated over the course of a sliding 31-day period centered on the day in question, with 25th to 75th and 10th to 90th percentile bands. The thin dotted line is the corresponding average liquid-equivalent snowfall.

Sun

The length of the day in Willits varies significantly over the course of the year. In 2021, the shortest day is December 21, with 9 hours, 23 minutes of daylight; the longest day is June 20, with 14 hours, 57 minutes of daylight.

Hours of Daylight and Twilight in Willits

Hours of Daylight and Twilight in WillitsJanFebMarAprMayJunJulAugSepOctNovDec0 hr24 hr4 hr20 hr8 hr16 hr12 hr12 hr16 hr8 hr20 hr4 hr24 hr0 hr12 hr, 7 minMar 2012 hr, 7 minMar 2014 hr, 57 minJun 2014 hr, 57 minJun 2012 hr, 8 minSep 2212 hr, 8 minSep 229 hr, 23 minDec 219 hr, 23 minDec 21nightnightdayNowNow
The number of hours during which the Sun is visible (black line). From bottom (most yellow) to top (most gray), the color bands indicate: full daylight, twilight (civil, nautical, and astronomical), and full night.

The earliest sunrise is at 5:45 AM on June 13, and the latest sunrise is 2 hours, 2 minutes later at 7:47 AM on November 6. The earliest sunset is at 4:49 PM on December 6, and the latest sunset is 3 hours, 55 minutes later at 8:44 PM on June 27.

Daylight saving time (DST) is observed in Willits during 2021, starting in the spring on March 14, lasting 7.8 months, and ending in the fall on November 7.

Sunrise & Sunset with Twilight and Daylight Saving Time in Willits

Sunrise & Sunset with Twilight and Daylight Saving Time in WillitsJanFebMarAprMayJunJulAugSepOctNovDec12 AM2 AM4 AM6 AM8 AM10 AM12 PM2 PM4 PM6 PM8 PM10 PM12 AMJun 135:45 AMJun 135:45 AM8:44 PMJun 278:44 PMJun 27Dec 64:49 PMDec 64:49 PM7:47 AMNov 67:47 AMNov 6Mar 14DSTMar 14DSTDSTNov 7DSTNov 7daynightnightnightnightSolarMidnightSolarMidnightSolarNoonSunriseSunsetNowNow
The solar day over the course of the year 2021. From bottom to top, the black lines are the previous solar midnight, sunrise, solar noon, sunset, and the next solar midnight. The day, twilights (civil, nautical, and astronomical), and night are indicated by the color bands from yellow to gray. The transitions to and from daylight saving time are indicated by the 'DST' labels.

Moon

The figure below presents a compact representation of key lunar data for 2021. The horizontal axis is the day, the vertical axis is the hour of the day, and the colored areas indicate when the moon is above the horizon. The vertical gray bars (new Moons) and blue bars (full Moons) indicate key Moon phases.

Moon Rise, Set & Phases in Willits

The time in which the moon is above the horizon (light blue area), with new moons (dark gray lines) and full moons (blue lines) indicated. The shaded overlays indicate night and civil twilight.

Humidity

We base the humidity comfort level on the dew point, as it determines whether perspiration will evaporate from the skin, thereby cooling the body. Lower dew points feel drier and higher dew points feel more humid. Unlike temperature, which typically varies significantly between night and day, dew point tends to change more slowly, so while the temperature may drop at night, a muggy day is typically followed by a muggy night.

The perceived humidity level in Willits, 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 in Willits

Humidity Comfort Levels in WillitsJanFebMarAprMayJunJulAugSepOctNovDec0%0%10%10%20%20%30%30%40%40%50%50%60%60%70%70%80%80%90%90%100%100%Feb 70%Feb 70%Jul 120%Jul 120%NowNowdrydrycomfortablecomfortable
dry 55°F comfortable 60°F humid 65°F muggy 70°F oppressive 75°F miserable
The percentage of time spent at various humidity comfort levels, categorized by dew point.

Wind

This section discusses the wide-area hourly average wind vector (speed and direction) at 10 meters above the ground. The wind experienced at any given location is highly dependent on local topography and other factors, and instantaneous wind speed and direction vary more widely than hourly averages.

The average hourly wind speed in Willits experiences mild seasonal variation over the course of the year.

The windier part of the year lasts for 7.7 months, from November 16 to July 6, with average wind speeds of more than 5.0 miles per hour. The windiest day of the year is May 9, with an average hourly wind speed of 5.6 miles per hour.

The calmer time of year lasts for 4.3 months, from July 6 to November 16. The calmest day of the year is August 6, with an average hourly wind speed of 4.4 miles per hour.

Average Wind Speed in Willits

Average Wind Speed in WillitswindywindyJanFebMarAprMayJunJulAugSepOctNovDec0 mph0 mph1 mph1 mph2 mph2 mph3 mph3 mph4 mph4 mph5 mph5 mph6 mph6 mph7 mph7 mph8 mph8 mph9 mph9 mphMay 95.6 mphMay 95.6 mphAug 64.4 mphAug 64.4 mphNov 165.0 mphNov 165.0 mphNowNow
The average of mean hourly wind speeds (dark gray line), with 25th to 75th and 10th to 90th percentile bands.

The predominant average hourly wind direction in Willits varies throughout the year.

The wind is most often from the west for 3.9 weeks, from July 7 to August 3, with a peak percentage of 45% on July 10. The wind is most often from the north for 11 months, from August 3 to July 7, with a peak percentage of 34% on January 1.

Wind Direction in Willits

Wind Direction in WillitsNWNJanFebMarAprMayJunJulAugSepOctNovDec0%100%20%80%40%60%60%40%80%20%100%0%NowNowwestsoutheastnorth
northeastsouthwest
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 1.0 mph. The lightly tinted areas at the boundaries are the percentage of hours spent in the implied intermediate directions (northeast, southeast, southwest, and northwest).

Water Temperature

Willits 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 experiences some seasonal variation over the course of the year.

The time of year with warmer water lasts for 2.6 months, from August 16 to November 4, with an average temperature above 55°F. The day of the year with the warmest water is September 15, with an average temperature of 56°F.

The time of year with cooler water lasts for 3.7 months, from March 3 to June 26, with an average temperature below 53°F. The day of the year with the coolest water is April 14, with an average temperature of 52°F.

Average Water Temperature in Willits

Average Water Temperature in WillitswarmcoolJanFebMarAprMayJunJulAugSepOctNovDec48°F48°F50°F50°F52°F52°F54°F54°F56°F56°F58°F58°F60°F60°FSep 1556°FSep 1556°F52°FApr 1452°FApr 14Nov 455°FNov 455°FMar 353°FMar 353°FJun 2653°FJun 2653°FNowNow
The daily average water temperature (purple line), with 25th to 75th and 10th to 90th percentile bands.

Best Time of Year to Visit

To characterize how pleasant the weather is in Willits 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 Willits for general outdoor tourist activities is from late June to late August, with a peak score in the last week of July.

Tourism Score in Willits

Tourism Score in Willitsbest timeJanFebMarAprMayJunJulAugSepOctNovDec002244668810106.76.70.20.2NowNowprecipitationprecipitationcloudscloudstemperaturetemperature tourism score
The tourism score (filled area), and its constituents: the temperature score (red line), the cloud cover score (blue line), and the precipitation score (green line).

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 Willits for hot-weather activities is from early July to mid August, with a peak score in the third week of July.

Beach/Pool Score in Willits

Beach/Pool Score in Willitsbest timeJanFebMarAprMayJunJulAugSepOctNovDec002244668810102.92.90.00.0NowNowprecipitationprecipitationcloudscloudstemperaturetemperature beach/pool score
The beach/pool score (filled area), and its constituents: the temperature score (red line), the cloud cover score (blue line), and the precipitation score (green line).

Methodology

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.

Growing Season

Definitions of the growing season vary throughout the world, but for the purposes of this report, we define it as the longest continuous period of non-freezing temperatures (≥ 32°F) in the year (the calendar year in the Northern Hemisphere, or from July 1 until June 30 in the Southern Hemisphere).

The growing season in Willits typically lasts for 7.8 months (237 days), from around March 23 to around November 16, rarely starting before February 12 or after April 20, and rarely ending before October 25 or after December 10.

Time Spent in Various Temperature Bands and the Growing Season in Willits

Time Spent in Various Temperature Bands and the Growing Season in Willitsgrowing seasonJanFebMarAprMayJunJulAugSepOctNovDec0%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%50%Mar 2350%Mar 2350%Nov 1650%Nov 1690%Apr 2090%Apr 2090%Oct 2590%Oct 2510%Feb 1210%Feb 1210%Dec 1010%Dec 100%Jan 120%Jan 12Jul 23100%Jul 23100%NowNowvery coldcoldcoolcomfortablewarmhot
frigid 15°F freezing 32°F very cold 45°F cold 55°F cool 65°F comfortable 75°F warm 85°F hot 95°F sweltering
The percentage of time spent in various temperature bands. The black line is the percentage chance that a given day is within the growing season.

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. In this report, we use a base of 50°F and a cap of 86°F.

Based on growing degree days alone, the first spring blooms in Willits should appear around March 11, only rarely appearing before February 21 or after April 3.

Growing Degree Days in Willits

Growing Degree Days in WillitsJanFebMarAprMayJunJulAugSepOctNovDec0°F0°F500°F500°F1,000°F1,000°F1,500°F1,500°F2,000°F2,000°F2,500°F2,500°FMar 1190°FMar 1190°FJun 27900°FJun 27900°FAug 191,800°FAug 191,800°FDec 312,698°FDec 312,698°FNowNow
The average growing degree days accumulated over the course of the year, with 25th to 75th and 10th to 90th percentile bands.

Solar Energy

This section discusses the total daily incident shortwave solar energy reaching the surface of the ground over a wide area, taking full account of seasonal variations in the length of the day, the elevation of the Sun above the horizon, and absorption by clouds and other atmospheric constituents. Shortwave radiation includes visible light and ultraviolet radiation.

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 3.4 months, from May 12 to August 25, with an average daily incident shortwave energy per square meter above 7.1 kWh. The brightest day of the year is June 30, with an average of 8.5 kWh.

The darker period of the year lasts for 3.6 months, from November 2 to February 21, with an average daily incident shortwave energy per square meter below 3.1 kWh. The darkest day of the year is December 19, with an average of 1.8 kWh.

Average Daily Incident Shortwave Solar Energy in Willits

Average Daily Incident Shortwave Solar Energy in WillitsbrightdarkdarkJanFebMarAprMayJunJulAugSepOctNovDec0 kWh0 kWh1 kWh1 kWh2 kWh2 kWh3 kWh3 kWh4 kWh4 kWh5 kWh5 kWh6 kWh6 kWh7 kWh7 kWh8 kWh8 kWh9 kWh9 kWh10 kWh10 kWhJun 308.5 kWhJun 308.5 kWhDec 191.8 kWhDec 191.8 kWhMay 127.1 kWhMay 127.1 kWhAug 257.1 kWhAug 257.1 kWhNov 23.1 kWhNov 23.1 kWhFeb 213.1 kWhFeb 213.1 kWhNowNow
The average daily shortwave solar energy reaching the ground per square meter (orange line), with 25th to 75th and 10th to 90th percentile bands.

Topography

For the purposes of this report, the geographical coordinates of Willits are 39.410 deg latitude, -123.356 deg longitude, and 1,391 ft elevation.

The topography within 2 miles of Willits contains very significant variations in elevation, with a maximum elevation change of 932 feet and an average elevation above sea level of 1,476 feet. Within 10 miles contains very significant variations in elevation (3,064 feet). Within 50 miles contains large variations in elevation (7,556 feet).

The area within 2 miles of Willits is covered by shrubs (47%), grassland (26%), and cropland (21%), within 10 miles by trees (50%) and shrubs (42%), and within 50 miles by shrubs (36%) and trees (31%).

Data Sources

This report illustrates the typical weather in Willits, 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 Willits.

For each station, the records are corrected for the elevation difference between that station and Willits 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 Willits is computed as the weighted average of the individual contributions from each station, with weights proportional to the inverse of the distance between Willits and a given station.

The stations contributing to this reconstruction are: Ukiah Municipal Airport (KUKI, 84%, 34 kilometers, southeast) and Red Bluff Municipal Airport (KRBL, 16%, 125 kilometers, northeast).

Other Data

All data relating to the Sun's position (e.g., sunrise and sunset) are computed using astronomical formulas from the book, Astronomical Algorithms 2nd Edition , by Jean Meeus.

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 . This reanalysis combines a variety of wide-area measurements in a state-of-the-art global meteorological model to reconstruct the hourly history of weather throughout the world on a 50-kilometer grid.

Land Use data comes from the Global Land Cover SHARE database , published by the Food and Agriculture Organization of the United Nations.

Elevation data comes from the Shuttle Radar Topography Mission (SRTM) , published by NASA's Jet Propulsion Laboratory.

Names, locations, and time zones of places and some airports come from the GeoNames Geographical Database .

Time zones for airports and weather stations are provided by AskGeo.com .

Maps are © Esri, with data from National Geographic, Esri, DeLorme, NAVTEQ, UNEP-WCMC, USGS, NASA, ESA, METI, NRCAN, GEBCO, NOAA, and iPC.

Disclaimer

The information on this site is provided as is, without any assurances as to its accuracy or suitability for any purpose. Weather data is prone to errors, outages, and other defects. We assume no responsibility for any decisions made on the basis of the content presented on this site.

We draw particular cautious attention to our reliance on the MERRA-2 model-based reconstructions for a number of important data series. 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.

We further caution that our travel scores are only as good as the data that underpin them, that weather conditions at any given location and time are unpredictable and variable, and that the definition of the scores reflects a particular set of preferences that may not agree with those of any particular reader.