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October Weather in Northern Mariana Islands Northern Mariana Islands

Daily high temperatures are around 86°F, rarely falling below 84°F or exceeding 89°F.

Daily low temperatures are around 78°F, rarely falling below 76°F or exceeding 81°F.

For reference, on June 12, the hottest day of the year, temperatures in Northern Mariana Islands typically range from 79°F to 88°F, while on February 18, the coldest day of the year, they range from 76°F to 84°F.

Average High and Low Temperature in October in Northern Mariana Islands

Average High and Low Temperature in October in Northern Mariana IslandsOct112233445566778899101011111212131314141515161617171818191920202121222223232424252526262727282829293030313174°F74°F76°F76°F78°F78°F80°F80°F82°F82°F84°F84°F86°F86°F88°F88°F90°F90°F92°F92°F94°F94°F96°F96°F98°F98°F100°F100°FSepNovOct 186°FOct 186°F78°F78°FOct 3186°FOct 3186°F79°F79°FOct 1186°FOct 1186°F78°F78°FOct 2186°FOct 2186°F78°F78°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 in Northern Mariana Islands

Average Hourly Temperature in October in Northern Mariana IslandsOct112233445566778899101011111212131314141515161617171818191920202121222223232424252526262727282829293030313112 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 AMSepNovwarmhot
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.
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The month of October in Northern Mariana Islands experiences rapidly decreasing cloud cover, with the percentage of time that the sky is overcast or mostly cloudy decreasing from 87% to 73%.

The clearest day of the month is October 31, with clear, mostly clear, or partly cloudy conditions 27% of the time.

For reference, on August 13, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 92%, while on February 18, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 53%.

Cloud Cover Categories in October in Northern Mariana Islands

Cloud Cover Categories in October in Northern Mariana IslandsOct11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031310%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%SepNovOct 113%Oct 113%Oct 3127%Oct 3127%Oct 1115%Oct 1115%Oct 2121%Oct 2121%clearmostly clearpartly cloudymostly cloudyovercast
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. In Northern Mariana Islands, the chance of a wet day over the course of October is very rapidly decreasing, starting the month at 61% and ending it at 36%.

For reference, the year's highest daily chance of a wet day is 62% on September 22, and its lowest chance is 3% on March 21.

Probability of Precipitation in October in Northern Mariana Islands

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 in Northern Mariana Islands is very rapidly decreasing, starting the month at 7.8 inches, when it rarely exceeds 13.5 inches or falls below 3.1 inches, and ending the month at 4.4 inches, when it rarely exceeds 8.1 inches or falls below 1.0 inches.

Average Monthly Rainfall in October in Northern Mariana Islands

Average Monthly Rainfall in October in Northern Mariana IslandsOct11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031310 in0 in2 in2 in4 in4 in6 in6 in8 in8 in10 in10 in12 in12 in14 in14 in16 in16 inSepNovOct 17.8 inOct 17.8 inOct 314.4 inOct 314.4 inOct 116.9 inOct 116.9 inOct 215.7 inOct 215.7 in
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 in Northern Mariana Islands, the length of the day is gradually decreasing. From the start to the end of the month, the length of the day decreases by 24 minutes, implying an average daily decrease of 48 seconds, and weekly decrease of 5 minutes, 36 seconds.

The shortest day of the month is October 31, with 11 hours, 35 minutes of daylight and the longest day is October 1, with 12 hours, 0 minutes of daylight.

Hours of Daylight and Twilight in October in Northern Mariana Islands

Hours of Daylight and Twilight in October in Northern Mariana IslandsOct11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031310 hr24 hr4 hr20 hr8 hr16 hr12 hr12 hr16 hr8 hr20 hr4 hr24 hr0 hrSepNovnightnightdaydayOct 112 hr, 0 minOct 112 hr, 0 minOct 3111 hr, 35 minOct 3111 hr, 35 minOct 1611 hr, 47 minOct 1611 hr, 47 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 in Northern Mariana Islands is 6:06 AM on October 1 and the latest sunrise is 6 minutes later at 6:12 AM on October 31.

The latest sunset is 6:06 PM on October 1 and the earliest sunset is 18 minutes earlier at 5:48 PM on October 31.

Daylight saving time is not observed in Northern Mariana Islands during 2024.

For reference, on June 20, the longest day of the year, the Sun rises at 5:47 AM and sets 13 hours, 2 minutes later, at 6:49 PM, while on December 21, the shortest day of the year, it rises at 6:38 AM and sets 11 hours, 14 minutes later, at 5:51 PM.

Sunrise & Sunset with Twilight in October in Northern Mariana Islands

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 the sun's elevation (the angle of the sun above the horizon) and azimuth (its compass bearing) for every hour of every day in the reporting period. The horizontal axis is the day of the year and the vertical axis is the hour of the day. For a given day and hour of that day, the background color indicates the azimuth of the sun at that moment. The black isolines are contours of constant solar elevation.

Solar Elevation and Azimuth in October in Northern Mariana Islands

Solar Elevation and Azimuth in October in Northern Mariana IslandsOct112233445566778899101011111212131314141515161617171818191920202121222223232424252526262727282829293030313112 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 AMSepNov001010202020303040405050506070800001010202030303040405050606070
northeastsouthwest
Solar elevation and azimuth over the course of October 2024. The black lines are lines of constant solar elevation (the angle of the sun above the horizon, in degrees). The background color fills indicate the azimuth (the compass bearing) of the sun. The lightly tinted areas at the boundaries of the cardinal compass points indicate the implied intermediate directions (northeast, southeast, southwest, and northwest).

The figure below presents a compact representation of key lunar data for October 2024. 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 in Northern Mariana Islands

Moon Rise, Set & Phases in October in Northern Mariana IslandsOct112233445566778899101011111212131314141515161617171818191920202121222223232424252526262727282829293030313112 AM12 AM4 AM4 AM8 AM8 AM12 PM12 PM4 PM4 PM8 PM8 PM12 AM12 AMSepNovSep 311:56 AMSep 311:56 AMSep 1812:35 PMSep 1812:35 PMOct 34:50 AMOct 34:50 AMOct 179:27 PMOct 179:27 PMNov 110:48 PMNov 110:48 PMNov 167:29 AMNov 167:29 AM5:58 AM5:58 AM6:39 PM6:39 PM6:25 PM6:25 PM6:53 AM6:53 AM6:12 AM6:12 AM6:18 PM6:18 PM5:40 PM5:40 PM6:34 AM6:34 AM5:42 AM5:42 AM5:29 PM5:29 PM5:01 PM5:01 PM6:20 AM6:20 AM
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 2024IlluminationMoonriseMoonsetMoonriseMeridian PassingDistance
1
3%4:42 AME5:14 PMW-10:59 AMS251,949 mi
2
0%5:27 AME5:46 PMW-11:37 AMS252,482 mi
3
0%6:12 AME6:18 PMW-12:15 PMS252,582 mi
4
2%6:58 AME6:52 PMWSW-12:55 PMS252,251 mi
5
5%7:45 AMESE7:28 PMWSW-1:36 PMS251,471 mi
6
10%8:35 AMESE8:08 PMWSW-2:21 PMS250,210 mi
7
17%9:27 AMESE8:52 PMWSW-3:09 PMS248,430 mi
8
25%10:22 AMESE9:41 PMWSW-4:01 PMS246,107 mi
9
35%11:18 AMESE10:35 PMWSW-4:56 PMS243,248 mi
10
45%12:14 PMESE11:33 PMWSW-5:54 PMS239,917 mi
11
50%1:08 PMESE--6:51 PMS236,246 mi
12
67%-12:33 AMWSW1:59 PMESE7:47 PMS232,449 mi
13
78%-1:34 AMWSW2:46 PMESE8:41 PMS228,808 mi
14
87%-2:34 AMWSW3:31 PMESE9:32 PMS225,652 mi
15
94%-3:33 AMW4:14 PME10:23 PMS223,316 mi
16
99%-4:33 AMW4:57 PME11:13 PMS222,082 mi
17
100%-5:33 AMW5:40 PME--
18
100%-6:34 AMWNW6:27 PMENE12:05 AMS222,122 mi
19
98%-7:38 AMWNW7:17 PMENE1:00 AMN223,463 mi
20
93%-8:44 AMWNW8:12 PMENE1:58 AMN225,967 mi
21
86%-9:49 AMWNW9:11 PMENE2:59 AMN229,360 mi
22
76%-10:52 AMWNW10:11 PMENE4:01 AMN233,284 mi
23
66%-11:50 AMWNW11:11 PMENE5:01 AMN237,363 mi
24
50%-12:41 PMWNW-5:58 AMN241,262 mi
25
45%12:08 AMENE1:26 PMWNW-6:49 AMN244,728 mi
26
35%1:01 AMENE2:06 PMWNW-7:36 AMN247,600 mi
27
26%1:51 AMENE2:42 PMWNW-8:18 AMS249,793 mi
28
18%2:39 AME3:15 PMW-8:58 AMS251,294 mi
29
11%3:25 AME3:48 PMW-9:37 AMS252,133 mi
30
6%4:10 AME4:20 PMW-10:15 AMS252,377 mi
31
2%4:55 AME4:53 PMWSW-10:54 AMS252,101 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 in Northern Mariana Islands is essentially constant during October, remaining around 100% throughout.

For reference, on April 30, the muggiest day of the year, there are muggy conditions 100% of the time, while on February 7, the least muggy day of the year, there are muggy conditions 96% of the time.

Humidity Comfort Levels in October in Northern Mariana Islands

Humidity Comfort Levels in October in Northern Mariana IslandsOct11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031310%0%10%10%20%20%30%30%40%40%50%50%60%60%70%70%80%80%90%90%100%100%SepNovOct 16100%Oct 16100%Oct 1100%Oct 1100%Oct 31100%Oct 31100%miserablemiserableoppressiveoppressive
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 in Northern Mariana Islands is rapidly increasing during October, increasing from 12.5 miles per hour to 15.1 miles per hour over the course of the month.

For reference, on December 7, the windiest day of the year, the daily average wind speed is 17.4 miles per hour, while on September 7, the calmest day of the year, the daily average wind speed is 11.2 miles per hour.

Average Wind Speed in October in Northern Mariana Islands

The average of mean hourly wind speeds (dark gray line), with 25th to 75th and 10th to 90th percentile bands.

The hourly average wind direction in Northern Mariana Islands throughout October is predominantly from the east, with a peak proportion of 82% on October 31.

Wind Direction in October in Northern Mariana Islands

Wind Direction in October in Northern Mariana IslandsOct11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031310%100%20%80%40%60%60%40%80%20%100%0%SepNoveastsouthwestnorth
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).

Northern Mariana Islands 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 in Northern Mariana Islands is essentially constant during October, remaining around 84°F throughout.

Average Water Temperature in October in Northern Mariana Islands

Average Water Temperature in October in Northern Mariana IslandsOct112233445566778899101011111212131314141515161617171818191920202121222223232424252526262727282829293030313181.5°F81.5°F82.0°F82.0°F82.5°F82.5°F83.0°F83.0°F83.5°F83.5°F84.0°F84.0°F84.5°F84.5°F85.0°F85.0°F85.5°F85.5°F86.0°F86.0°F86.5°F86.5°FSepNovOct 185°FOct 185°FOct 3184°FOct 3184°FOct 1185°FOct 1185°FOct 2184°FOct 2184°F
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 in Northern Mariana Islands 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 in Northern Mariana Islands

Time Spent in Various Temperature Bands and the Growing Season in October in Northern Mariana IslandsOct11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031310%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 16warmhot
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 in Northern Mariana Islands are very rapidly increasing during October, increasing by 950°F, from 8,503°F to 9,454°F, over the course of the month.

Growing Degree Days in October in Northern Mariana Islands

Growing Degree Days in October in Northern Mariana IslandsOct11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031318,400°F8,400°F8,600°F8,600°F8,800°F8,800°F9,000°F9,000°F9,200°F9,200°F9,400°F9,400°FSepNovOct 18,503°FOct 18,503°FOct 319,454°FOct 319,454°FOct 118,820°FOct 118,820°FOct 219,137°FOct 219,137°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 in Northern Mariana Islands is essentially constant during October, remaining within 0.3 kWh of 4.3 kWh throughout.

Average Daily Incident Shortwave Solar Energy in October in Northern Mariana Islands

Average Daily Incident Shortwave Solar Energy in October in Northern Mariana IslandsOct11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031310 kWh0 kWh1 kWh1 kWh2 kWh2 kWh3 kWh3 kWh4 kWh4 kWh5 kWh5 kWh6 kWh6 kWhSepNovOct 14.1 kWhOct 14.1 kWhOct 314.6 kWhOct 314.6 kWhOct 114.1 kWhOct 114.1 kWhOct 214.4 kWhOct 214.4 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 Northern Mariana Islands are 15.214 deg latitude, 145.756 deg longitude, and 0 ft elevation.

The topography within 2 miles of Northern Mariana Islands is essentially flat, with a maximum elevation change of 0 feet and an average elevation above sea level of 0 feet. Within 10 miles is also essentially flat (0 feet). Within 50 miles is also essentially flat (0 feet).

The area within 2 miles of Northern Mariana Islands is covered by cropland (79%) and trees (14%), within 10 miles by water (89%), and within 50 miles by water (99%).

This report illustrates the typical weather in Northern Mariana Islands, based on a statistical analysis of historical hourly weather reports and model reconstructions from January 1, 1980 to December 31, 2016.

The details of the data sources used for this report can be found on the Francisco C. Ada International Airport page.

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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.

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