1. WeatherSpark.com
  2. United States
  3. California
  4. Imperial
  5. November

Average Weather in November in Imperial California, United States

Daily low temperatures decrease by 10°F, from 56°F to 46°F, rarely falling below 38°F or exceeding 63°F.

For reference, on July 22, the hottest day of the year, temperatures in Imperial typically range from 80°F to 107°F, while on January 1, the coldest day of the year, they range from 42°F to 68°F.

Average High and Low Temperature in November

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 hourly average temperatures for the quarter of the year centered on November. The horizontal axis is the day, 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 November

Average Hourly Temperature in November in Imperial1815222911223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303012 AM4 AM8 AM12 PM4 PM8 PM12 AMOctDecvery coldcoldcoldcoolcoolcomfortablewarmhot
The average hourly temperature, color coded into bands: 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 shaded overlays indicate night and civil twilight.

Tindouf, Algeria (6,110 miles away) is the far-away foreign place with temperatures most similar to Imperial (view comparison).

Clouds

The month of November in Imperial experiences gradually increasing cloud cover, with the percentage of time that the sky is overcast or mostly cloudy increasing from 22% to 28%.

The clearest day of the month is November 1, with clear, mostly clear, or partly cloudy conditions 78% of the time.

For reference, on February 20, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 35%, while on September 18, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 90%.

Cloud Cover Categories in November

Cloud Cover Categories in November in Imperial181522291122334455667788991010111112121313141415151616171718181919202021212222232324242525262627272828292930300%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%OctDecNov 178%Nov 178%Nov 3072%Nov 3072%Nov 1175%Nov 1175%Nov 2173%Nov 2173%clearovercastmostly clearmostly cloudypartly cloudy
The percentage of time spent in each cloud cover band, categorized by the percentage of the sky covered by clouds: clear < 20% < mostly clear < 40% < partly cloudy < 60% < mostly cloudy < 80% < overcast.

Precipitation

A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. In Imperial, the chance of a wet day over the course of November is gradually increasing, starting the month at 3% and ending it at 6%.

For reference, the year's highest daily chance of a wet day is 11% on February 17, and its lowest chance is 1% on June 26.

Probability of Precipitation in November

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 month and not just the monthly total, we show the rainfall accumulated over a sliding 31-day period centered around each day.

The average sliding 31-day rainfall during November in Imperial is essentially constant, remaining about 0.3 inches throughout, and rarely exceeding 1.1 inches or falling below -0.0 inches.

Average Monthly Rainfall in November

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

Over the course of November in Imperial, the length of the day is decreasing. From the start to the end of the month, the length of the day decreases by 41 minutes, implying an average daily decrease of 1 minute, 25 seconds, and weekly decrease of 9 minutes, 53 seconds.

The shortest day of the month is November 30, with 10 hours, 10 minutes of daylight and the longest day is November 1, with 10 hours, 50 minutes of daylight.

Hours of Daylight and Twilight in November

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 latest sunrise of the month in Imperial is 7:03 AM on November 4 and the earliest sunrise is 59 minutes earlier at 6:03 AM on November 5.

The latest sunset is 5:50 PM on November 1 and the earliest sunset is 1 hour, 15 minutes earlier at 4:35 PM on November 30.

Daylight saving time (DST) ends at 1:00 AM on November 5, 2017, shifting sunrise and sunset to be an hour earlier.

For reference, on June 21, the longest day of the year, the Sun rises at 5:34 AM and sets 14 hours, 19 minutes later, at 7:53 PM, while on December 21, the shortest day of the year, it rises at 6:41 AM and sets 9 hours, 59 minutes later, at 4:40 PM.

Sunrise & Sunset with Twilight and Daylight Saving Time in November

Sunrise & Sunset with Twilight and Daylight Saving Time in November in Imperial1815222911223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303012 AM2 AM4 AM6 AM8 AM10 AM12 PM2 PM4 PM6 PM8 PM10 PM12 AMOctDec6:03 AM6:03 AMNov 54:47 PMNov 54:47 PM6:26 AM6:26 AMNov 304:35 PMNov 304:35 PM6:18 AM6:18 AMNov 214:37 PMNov 214:37 PMDSTNov 5DSTNov 5SolarMidnightSolarMidnightSolarNoonSunriseSunset
The solar day over the course of November. 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.

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 chance that a given day will be muggy in Imperial is essentially constant during November, remaining around 0% throughout.

For reference, on August 12, the muggiest day of the year, there are muggy conditions 37% of the time, while on November 21, the least muggy day of the year, there are muggy conditions 0% of the time.

Humidity Comfort Levels in November

Humidity Comfort Levels in November in Imperial181522291122334455667788991010111112121313141415151616171718181919202021212222232324242525262627272828292930300%10%20%30%40%50%60%70%80%90%100%OctDecNov 10%Nov 10%Nov 300%Nov 300%Nov 110%Nov 110%Nov 210%Nov 210%drydryhumidhumidcomfortablecomfortablemuggymuggy
The percentage of time spent at various humidity comfort levels, categorized by dew point: dry < 55°F < comfortable < 60°F < humid < 65°F < muggy < 70°F < oppressive < 75°F < miserable.

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 Imperial is essentially constant during November, remaining within 0.1 miles per hour of 6.8 miles per hour throughout.

For reference, on May 7, the windiest day of the year, the daily average wind speed is 9.6 miles per hour, while on January 11, the calmest day of the year, the daily average wind speed is 6.5 miles per hour.

Average Wind Speed in November

The average of mean hourly wind speeds (dark gray line), with 25th to 75th and 10th to 90th percentile bands.
The wind direction in Imperial during November is predominantly out of the west from November 1 to November 7 and the north from November 7 to November 30.

Wind Direction in November

Wind Direction in November in ImperialWN181522291122334455667788991010111112121313141415151616171718181919202021212222232324242525262627272828292930300%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%OctDecwestnortheast
The percentage of hours in which the mean wind direction is from each of the four cardinal wind directions (north, east, south, and west), excluding hours in which the mean wind speed is less than 1 mph. The lightly tinted areas at the boundaries are the percentage of hours spent in the implied intermediate directions (northeast, southeast, southwest, and northwest).

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).

While it does not do so every year, freezing temperatures are seen in Imperial over some winters. The day least likely to be in the growing season is January 1, with a 63% chance.

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

Time Spent in Various Temperature Bands and the Growing Season in November in Imperialgrowing season181522291122334455667788991010111112121313141415151616171718181919202021212222232324242525262627272828292930300%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%OctDec100%Nov 1100%Nov 194%Nov 3094%Nov 30100%Nov 11100%Nov 1199%Nov 2199%Nov 21very coldcoldcoolcomfortablewarmhotsweltering
The percentage of time spent in various temperature bands: 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 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.

The average accumulated growing degree days in Imperial are increasing during November, increasing by 396°F, from 7,186°F to 7,582°F, over the course of the month.

Growing Degree Days in November

The average growing degree days accumulated over the course of November, 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 in Imperial is gradually decreasing during November, falling by 1.0 kWh, from 4.5 kWh to 3.5 kWh, over the course of the month.

Average Daily Incident Shortwave Solar Energy in November

Average Daily Incident Shortwave Solar Energy in November in Imperial181522291122334455667788991010111112121313141415151616171718181919202021212222232324242525262627272828292930300.0 kWh0.5 kWh1.0 kWh1.5 kWh2.0 kWh2.5 kWh3.0 kWh3.5 kWh4.0 kWh4.5 kWh5.0 kWh5.5 kWh6.0 kWh6.5 kWhOctDecNov 14.5 kWhNov 14.5 kWhNov 303.5 kWhNov 303.5 kWhNov 114.1 kWhNov 114.1 kWhNov 213.8 kWhNov 213.8 kWh
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 Imperial are 32.848 deg latitude, -115.569 deg longitude, and -56 ft elevation.

The topography within 2 miles of Imperial is essentially flat, with a maximum elevation change of 23 feet and an average elevation above sea level of -56 feet. Within 10 miles is essentially flat (308 feet). Within 50 miles contains only modest variations in elevation (6,565 feet).

The area within 2 miles of Imperial is covered by cropland (71%) and shrubs (29%), within 10 miles by cropland (85%), and within 50 miles by shrubs (50%) and bare soil (20%).

Data Sources

This report illustrates the typical weather in Imperial year round, 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 Imperial.

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

The stations contributing to this reconstruction are: Imperial County Airport (100%, 1.8 kilometers, southwest) and Blythe Airport (0.2%, 117 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 Tables of the Sun, Moon and Planets , 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 aiports 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.