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October Weather at Monterey Regional Airport California, United States

Daily high temperatures decrease by 3°F, from 68°F to 65°F, rarely falling below 58°F or exceeding 78°F.

Daily low temperatures decrease by 4°F, from 53°F to 50°F, rarely falling below 44°F or exceeding 58°F.

For reference, on September 12, the hottest day of the year, temperatures at Monterey Regional Airport typically range from 55°F to 69°F, while on January 2, the coldest day of the year, they range from 43°F to 59°F.

Average High and Low Temperature in October at Monterey Regional Airport

Average High and Low Temperature in October at Monterey Regional AirportOct112233445566778899101011111212131314141515161617171818191920202121222223232424252526262727282829293030313140°F40°F45°F45°F50°F50°F55°F55°F60°F60°F65°F65°F70°F70°F75°F75°F80°F80°FSepNovOct 168°FOct 168°F53°F53°FOct 3165°FOct 3165°F50°F50°FOct 1168°FOct 1168°F52°F52°FOct 2167°FOct 2167°F51°F51°F
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 October. 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 October at Monterey Regional Airport

Average Hourly Temperature in October at Monterey Regional AirportOct112233445566778899101011111212131314141515161617171818191920202121222223232424252526262727282829293030313112 AM12 AM2 AM2 AM4 AM4 AM6 AM6 AM8 AM8 AM10 AM10 AM12 PM12 PM2 PM2 PM4 PM4 PM6 PM6 PM8 PM8 PM10 PM10 PM12 AM12 AMSepNovcoldcoldcoolcomfortable
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.

Valparaíso, Chile (5,805 miles away) is the far-away foreign place with temperatures most similar to Monterey Regional Airport (view comparison).

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Marker
© Esri, et al.

Compare Monterey Regional Airport to another city:

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The month of October at Monterey Regional Airport experiences rapidly increasing cloud cover, with the percentage of time that the sky is overcast or mostly cloudy increasing from 17% to 32%.

The clearest day of the month is October 1, with clear, mostly clear, or partly cloudy conditions 83% of the time.

For reference, on February 16, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 51%, while on August 7, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 92%.

Cloud Cover Categories in October at Monterey Regional Airport

Cloud Cover Categories in October at Monterey Regional AirportOct11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031310%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%SepNovOct 183%Oct 183%Oct 3168%Oct 3168%Oct 1178%Oct 1178%Oct 2174%Oct 2174%clearovercastmostly clearmostly cloudypartly cloudy
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.

A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. At Monterey Regional Airport, the chance of a wet day over the course of October is very rapidly increasing, starting the month at 4% and ending it at 12%.

For reference, the year's highest daily chance of a wet day is 30% on February 21, and its lowest chance is 0% on July 22.

Probability of Precipitation in October at Monterey Regional Airport

Probability of Precipitation in October at Monterey Regional AirportOct11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031310%0%2%2%4%4%6%6%8%8%10%10%12%12%14%14%16%16%18%18%20%20%22%22%24%24%SepNovOct 14%Oct 14%Oct 3112%Oct 3112%Oct 115%Oct 115%Oct 218%Oct 218%rain
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 October at Monterey Regional Airport is increasing, starting the month at 0.4 inches, when it rarely exceeds 1.3 inches, and ending the month at 1.4 inches, when it rarely exceeds 3.2 inches.

Average Monthly Rainfall in October at Monterey Regional Airport

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 snowfall.

Over the course of October at Monterey Regional Airport, the length of the day is rapidly decreasing. From the start to the end of the month, the length of the day decreases by 1 hour, 6 minutes, implying an average daily decrease of 2 minutes, 13 seconds, and weekly decrease of 15 minutes, 29 seconds.

The shortest day of the month is October 31, with 10 hours, 41 minutes of daylight and the longest day is October 1, with 11 hours, 48 minutes of daylight.

Hours of Daylight and Twilight in October at Monterey Regional Airport

Hours of Daylight and Twilight in October at Monterey Regional AirportOct11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031310 hr24 hr4 hr20 hr8 hr16 hr12 hr12 hr16 hr8 hr20 hr4 hr24 hr0 hrSepNovnightnightdaydayOct 111 hr, 48 minOct 111 hr, 48 minOct 3110 hr, 41 minOct 3110 hr, 41 min
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 of the month at Monterey Regional Airport is 7:02 AM on October 1 and the latest sunrise is 27 minutes later at 7:29 AM on October 31.

The latest sunset is 6:50 PM on October 1 and the earliest sunset is 39 minutes earlier at 6:11 PM on October 31.

Daylight saving time is observed at Monterey Regional Airport during 2022, but it neither starts nor ends during October, so the entire month is in daylight saving time.

For reference, on June 21, the longest day of the year, the Sun rises at 5:49 AM and sets 14 hours, 40 minutes later, at 8:29 PM, while on December 21, the shortest day of the year, it rises at 7:15 AM and sets 9 hours, 40 minutes later, at 4:55 PM.

Sunrise & Sunset with Twilight and Daylight Saving Time in October at Monterey Regional Airport

Sunrise & Sunset with Twilight and Daylight Saving Time in October at Monterey Regional AirportOct112233445566778899101011111212131314141515161617171818191920202121222223232424252526262727282829293030313112 AM2 AM4 AM6 AM8 AM10 AM12 PM2 PM4 PM6 PM8 PM10 PM12 AMSepNov7:02 AM7:02 AMOct 16:50 PMOct 16:50 PM7:29 AM7:29 AMOct 316:11 PMOct 316:11 PM7:15 AM7:15 AMOct 166:29 PMOct 166:29 PMSolarMidnightSolarMidnightSolarNoonSunriseSunset
The solar day over the course of October. 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 figure below presents a compact representation of key lunar data for October 2022. 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. The label associated with each bar indicates the date and time that the phase is obtained, and the companion time labels indicate the rise and set times of the Moon for the nearest time interval in which the moon is above the horizon.

Moon Rise, Set & Phases in October at Monterey Regional Airport

Moon Rise, Set & Phases in October at Monterey Regional AirportOct112233445566778899101011111212131314141515161617171818191920202121222223232424252526262727282829293030313112 AM12 AM4 AM4 AM8 AM8 AM12 PM12 PM4 PM4 PM8 PM8 PM12 AM12 AMSepNovSep 103:00 AMSep 103:00 AMSep 252:55 PMSep 252:55 PMOct 91:56 PMOct 91:56 PMOct 253:49 AMOct 253:49 AMNov 83:03 AMNov 83:03 AMNov 232:58 PMNov 232:58 PM7:28 PM7:28 PM6:55 AM6:55 AM6:37 AM6:37 AM7:14 PM7:14 PM6:50 PM6:50 PM7:58 AM7:58 AM7:37 AM7:37 AM6:37 PM6:37 PM4:46 PM4:46 PM6:52 AM6:52 AM6:37 AM6:37 AM4:45 PM4:45 PM
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.
Oct 2022IlluminationMoonriseMoonsetMoonriseMeridian PassingDistance
1
39%1:22 PMSE10:49 PMSW-6:06 PMS230,664 mi
2
50%2:28 PMSE11:51 PMSW-7:09 PMS229,942 mi
3
63%3:25 PMESE--8:13 PMS229,547 mi
4
74%-1:00 AMWSW4:13 PMESE9:13 PMS229,537 mi
5
84%-2:13 AMWSW4:53 PMESE10:09 PMS229,980 mi
6
92%-3:26 AMWSW5:27 PMESE11:01 PMS230,941 mi
7
97%-4:36 AMWSW5:56 PME11:50 PMS232,454 mi
8
99%-5:45 AMW6:24 PME--
9
100%-6:52 AMW6:50 PME12:36 AMS234,501 mi
10
100%-7:58 AMW7:17 PMENE1:21 AMS236,999 mi
11
97%-9:03 AMWNW7:46 PMENE2:07 AMS239,801 mi
12
93%-10:08 AMWNW8:19 PMENE2:53 AMS242,707 mi
13
87%-11:11 AMWNW8:56 PMENE3:42 AMS245,490 mi
14
79%-12:12 PMWNW9:38 PMNE4:31 AMS247,919 mi
15
70%-1:09 PMNW10:27 PMNE5:22 AMS249,785 mi
16
61%-2:00 PMNW11:21 PMNE6:14 AMS250,923 mi
17
50%-2:44 PMWNW-7:04 AMS251,228 mi
18
42%12:18 AMENE3:22 PMWNW-7:53 AMS250,663 mi
19
32%1:18 AMENE3:55 PMWNW-8:40 AMS249,269 mi
20
23%2:19 AMENE4:24 PMWNW-9:25 AMS247,156 mi
21
15%3:20 AMENE4:50 PMWNW-10:08 AMS244,495 mi
22
8%4:22 AME5:16 PMW-10:51 AMS241,503 mi
23
3%5:25 AME5:41 PMW-11:34 AMS238,425 mi
24
1%6:29 AME6:07 PMW-12:19 PMS235,508 mi
25
0%7:37 AMESE6:37 PMWSW-1:07 PMS232,972 mi
26
3%8:47 AMESE7:11 PMWSW-1:59 PMS230,985 mi
27
8%10:00 AMESE7:53 PMWSW-2:56 PMS229,642 mi
28
15%11:13 AMESE8:43 PMSW-3:58 PMS228,959 mi
29
25%12:21 PMSE9:43 PMSW-5:02 PMS228,884 mi
30
36%1:22 PMSE10:51 PMWSW-6:07 PMS229,319 mi
31
50%2:13 PMESE--7:08 PMS230,151 mi

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 at Monterey Regional Airport is essentially constant during October, remaining around 0% throughout.

For reference, on September 16, the muggiest day of the year, there are muggy conditions 0% of the time, while on January 17, the least muggy day of the year, there are muggy conditions 0% of the time.

Humidity Comfort Levels in October at Monterey Regional Airport

Humidity Comfort Levels in October at Monterey Regional AirportOct11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031310%0%10%10%20%20%30%30%40%40%50%50%60%60%70%70%80%80%90%90%100%100%SepNovOct 10%Oct 10%Oct 310%Oct 310%Oct 110%Oct 110%Oct 210%Oct 210%comfortablecomfortabledrydry
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.

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 at Monterey Regional Airport is essentially constant during October, remaining within 0.2 miles per hour of 6.5 miles per hour throughout.

For reference, on April 17, the windiest day of the year, the daily average wind speed is 8.1 miles per hour, while on September 16, the calmest day of the year, the daily average wind speed is 6.2 miles per hour.

Average Wind Speed in October at Monterey Regional Airport

Average Wind Speed in October at Monterey Regional AirportOct11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031310 mph0 mph2 mph2 mph4 mph4 mph6 mph6 mph8 mph8 mph10 mph10 mph12 mph12 mphSepNovOct 16.4 mphOct 16.4 mphOct 316.6 mphOct 316.6 mphOct 166.5 mphOct 166.5 mph
The average of mean hourly wind speeds (dark gray line), with 25th to 75th and 10th to 90th percentile bands.

The wind direction at Monterey Regional Airport during October is predominantly out of the west from October 1 to October 15 and the north from October 15 to October 31.

Wind Direction in October at Monterey Regional Airport

Wind Direction in October at Monterey Regional AirportWNOct11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031310%100%20%80%40%60%60%40%80%20%100%0%SepNovwestsouthnortheast
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).

Monterey Regional Airport 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 surface water temperature at Monterey Regional Airport is essentially constant during October, remaining within 1°F of 58°F throughout.

Average Water Temperature in October at Monterey Regional Airport

The daily average water temperature (purple line), with 25th to 75th and 10th to 90th percentile bands.

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).

Temperatures at Monterey Regional Airport are sufficiently warm year round that it is not entirely meaningful to discuss the growing season in these terms. We nevertheless include the chart below as an illustration of the distribution of temperatures experienced throughout the year.

Time Spent in Various Temperature Bands and the Growing Season in October at Monterey Regional Airport

Time Spent in Various Temperature Bands and the Growing Season in October at Monterey Regional Airportgrowing seasonOct11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031310%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%SepNov100%Oct 16100%Oct 16coldcoolcomfortablevery coldwarm
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.

The average accumulated growing degree days at Monterey Regional Airport are increasing during October, increasing by 261°F, from 1,879°F to 2,140°F, over the course of the month.

Growing Degree Days in October at Monterey Regional Airport

Growing Degree Days in October at Monterey Regional AirportOct11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031311,600°F1,600°F1,800°F1,800°F2,000°F2,000°F2,200°F2,200°F2,400°F2,400°F2,600°F2,600°FSepNovOct 11,879°FOct 11,879°FOct 312,140°FOct 312,140°FOct 162,021°FOct 162,021°F
The average growing degree days accumulated over the course of October, with 25th to 75th and 10th to 90th percentile bands.

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 at Monterey Regional Airport is rapidly decreasing during October, falling by 1.6 kWh, from 5.4 kWh to 3.8 kWh, over the course of the month.

Average Daily Incident Shortwave Solar Energy in October at Monterey Regional Airport

Average Daily Incident Shortwave Solar Energy in October at Monterey Regional AirportOct11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031310 kWh0 kWh1 kWh1 kWh2 kWh2 kWh3 kWh3 kWh4 kWh4 kWh5 kWh5 kWh6 kWh6 kWh7 kWh7 kWhSepNovOct 15.4 kWhOct 15.4 kWhOct 313.8 kWhOct 313.8 kWhOct 164.6 kWhOct 164.6 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.

For the purposes of this report, the geographical coordinates of Monterey Regional Airport are 36.588 deg latitude, -121.839 deg longitude, and 220 ft elevation.

The topography within 2 miles of Monterey Regional Airport contains very significant variations in elevation, with a maximum elevation change of 896 feet and an average elevation above sea level of 260 feet. Within 10 miles contains very significant variations in elevation (3,045 feet). Within 50 miles contains large variations in elevation (5,850 feet).

The area within 2 miles of Monterey Regional Airport is covered by artificial surfaces (55%), shrubs (20%), and cropland (13%), within 10 miles by water (31%) and shrubs (18%), and within 50 miles by water (46%) and grassland (18%).

This report illustrates the typical weather at Monterey Regional Airport, 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

Monterey Regional Airport has a weather station that reported reliably enough during the analysis period that we have included it in our network. When available, historical temperature and dew point measurements are taken directly from this weather station. These records are obtained from NOAA's Integrated Surface Hourly data set, falling back on ICAO METAR records as required.

In the case of missing or erroneous measurements from this station, we fall back on records from nearby stations, adjusted according to typical seasonal and diurnal intra-station differences. For a given day of the year and hour of the day, the fallback station is selected to minimize the prediction error over the years for which there are measurements for both stations.

The stations on which we may fall back include but are not limited to Salinas Municipal Airport, Watsonville Municipal Airport, Hollister Municipal Airport, Norman Y. Mineta San José International Airport, Moffett Federal Airfield, Point Piedras Blanca, Hayward Air Terminal Airport, and Livermore Municipal Airport.

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.

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