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Fall Weather in Stratfield Mortimer United Kingdom

Daily high temperatures decrease by 20°F, from 68°F to 47°F, rarely falling below 39°F or exceeding 76°F.

Daily low temperatures decrease by 14°F, from 52°F to 38°F, rarely falling below 28°F or exceeding 58°F.

For reference, on July 26, the hottest day of the year, temperatures in Stratfield Mortimer typically range from 55°F to 72°F, while on February 7, the coldest day of the year, they range from 35°F to 45°F.

Average High and Low Temperature in the Fall in Stratfield Mortimer

Average High and Low Temperature in the Fall in Stratfield MortimerSepOctNov25°F25°F30°F30°F35°F35°F40°F40°F45°F45°F50°F50°F55°F55°F60°F60°F65°F65°F70°F70°F75°F75°F80°F80°F85°F85°FSummerWinterSep 168°FSep 168°F52°F52°FNov 3047°FNov 3047°F38°F38°FOct 161°FOct 161°F48°F48°FNov 154°FNov 154°F43°F43°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 fall temperatures. 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 the Fall in Stratfield Mortimer

Average Hourly Temperature in the Fall in Stratfield MortimerSepOctNov12 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 AMSummerWintervery coldcoldcoolcomfortable
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.

Ladner, Canada (4,708 miles away) is the far-away foreign place with temperatures most similar to Stratfield Mortimer (view comparison).

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The fall in Stratfield Mortimer experiences very rapidly increasing cloud cover, with the percentage of time that the sky is overcast or mostly cloudy increasing from 47% to 71%.

The clearest day of the fall is September 1, with clear, mostly clear, or partly cloudy conditions 53% of the time.

For reference, on December 26, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 73%, while on July 14, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 58%.

Cloud Cover Categories in the Fall in Stratfield Mortimer

Cloud Cover Categories in the Fall in Stratfield MortimerSepOctNov0%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%SummerWinterSep 153%Sep 153%Nov 3029%Nov 3029%Oct 147%Oct 147%Nov 136%Nov 136%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 Stratfield Mortimer, the chance of a wet day over the course of the fall is rapidly increasing, starting the season at 22% and ending it at 30%.

For reference, the year's highest daily chance of a wet day is 33% on December 29, and its lowest chance is 20% on September 10.

Probability of Precipitation in the Fall in Stratfield Mortimer

Probability of Precipitation in the Fall in Stratfield MortimerSepOctNov0%0%5%5%10%10%15%15%20%20%25%25%30%30%35%35%SummerWinterSep 1020%Sep 1020%Nov 3030%Nov 3030%Oct 126%Oct 126%Nov 132%Nov 132%rainmixed
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 season and not just the monthly totals, we show the rainfall accumulated over a sliding 31-day period centered around each day.

The average sliding 31-day rainfall during the fall in Stratfield Mortimer is increasing, starting the season at 1.5 inches, when it rarely exceeds 3.0 inches or falls below 0.4 inches, and ending the season at 2.1 inches, when it rarely exceeds 3.9 inches or falls below 0.7 inches.

The highest average 31-day accumulation is 2.3 inches on October 29.

Average Monthly Rainfall in the Fall in Stratfield Mortimer

Average Monthly Rainfall in the Fall in Stratfield MortimerSepOctNov0 in0 in1 in1 in2 in2 in3 in3 in4 in4 inSummerWinterOct 282.3 inOct 282.3 inSep 11.5 inSep 11.5 inNov 302.1 inNov 302.1 inOct 12.1 inOct 12.1 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 the fall in Stratfield Mortimer, the length of the day is very rapidly decreasing. From the start to the end of the season, the length of the day decreases by 5 hours, 18 minutes, implying an average daily decrease of 3 minutes, 32 seconds, and weekly decrease of 24 minutes, 45 seconds.

The shortest day of the fall is November 30, with 8 hours, 14 minutes of daylight and the longest day is September 1, with 13 hours, 32 minutes of daylight.

Hours of Daylight and Twilight in the Fall in Stratfield Mortimer

Hours of Daylight and Twilight in the Fall in Stratfield MortimerSepOctNov0 hr24 hr4 hr20 hr8 hr16 hr12 hr12 hr16 hr8 hr20 hr4 hr24 hr0 hrSummerWinterSep 2212 hr, 11 minSep 2212 hr, 11 minnightnightdaydayNov 308 hr, 14 minNov 308 hr, 14 minNov 19 hr, 39 minNov 19 hr, 39 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 fall in Stratfield Mortimer is 6:17 AM on September 1 and the latest sunrise is 1 hour, 30 minutes later at 7:47 AM on October 26.

The latest sunset is 7:49 PM on September 1 and the earliest sunset is 3 hours, 50 minutes earlier at 3:59 PM on November 30.

Daylight saving time (DST) starts at 1:00 AM on October 27, 2024, shifting sunrise and sunset to be an hour later.

For reference, on June 20, the longest day of the year, the Sun rises at 4:47 AM and sets 16 hours, 37 minutes later, at 9:24 PM, while on December 21, the shortest day of the year, it rises at 8:06 AM and sets 7 hours, 51 minutes later, at 3:57 PM.

Sunrise & Sunset with Twilight and Daylight Saving Time in the Fall in Stratfield Mortimer

Sunrise & Sunset with Twilight and Daylight Saving Time in the Fall in Stratfield MortimerSepOctNov12 AM2 AM4 AM6 AM8 AM10 AM12 PM2 PM4 PM6 PM8 PM10 PM12 AMSummerWinter6:17 AM6:17 AMSep 17:49 PMSep 17:49 PM7:46 AM7:46 AMNov 303:59 PMNov 303:59 PM7:47 AM7:47 AMOct 265:47 PMOct 265:47 PM7:05 AM7:05 AMOct 16:40 PMOct 16:40 PMDSTOct 27DSTOct 27SolarMidnightSolarMidnightSolarNoonSunriseSunset
The solar day in the fall. 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.

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 the Fall in Stratfield Mortimer

Solar Elevation and Azimuth in the Fall in Stratfield MortimerSepOctNov12 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 AMSummerWinter0020300010103040
northeastsouthwest
Solar elevation and azimuth in the the fall of 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 the fall of 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 the Fall in Stratfield Mortimer

Moon Rise, Set & Phases in the Fall in Stratfield MortimerSepOctNov12 AM12 AM4 AM4 AM8 AM8 AM12 PM12 PM4 PM4 PM8 PM8 PM12 AM12 AMSummerWinterAug 412:14 PMAug 412:14 PMAug 197:26 PMAug 197:26 PMSep 32:56 AMSep 32:56 AMSep 183:35 AMSep 183:35 AMOct 27:50 PMOct 27:50 PMOct 1712:27 PMOct 1712:27 PMNov 112:48 PMNov 112:48 PMNov 159:29 PMNov 159:29 PMDec 16:22 AMDec 16:22 AMDec 159:02 AMDec 159:02 AMDec 3010:28 PMDec 3010:28 PM9:17 PM9:17 PM8:34 PM8:34 PM6:31 AM6:31 AM6:28 AM6:28 AM8:02 PM8:02 PM7:08 PM7:08 PM6:58 AM6:58 AM6:30 PM6:30 PM5:39 PM5:39 PM7:24 AM7:24 AM6:59 AM6:59 AM4:13 PM4:13 PM3:33 PM3:33 PM8:30 AM8:30 AM8:29 AM8:29 AM8:26 AM8:26 AM3:02 PM3:02 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.

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 Stratfield Mortimer is essentially constant during the fall, remaining around 0% throughout.

For reference, on August 10, the muggiest day of the year, there are muggy conditions 0% of the time, while on September 29, the least muggy day of the year, there are muggy conditions 0% of the time.

Humidity Comfort Levels in the Fall in Stratfield Mortimer

Humidity Comfort Levels in the Fall in Stratfield MortimerSepOctNov0%0%10%10%20%20%30%30%40%40%50%50%60%60%70%70%80%80%90%90%100%100%SummerWinterSep 10%Sep 10%Nov 300%Nov 300%Oct 10%Oct 10%Nov 10%Nov 10%humidhumidcomfortablecomfortabledrydry
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 Stratfield Mortimer is increasing during the fall, increasing from 10.5 miles per hour to 12.0 miles per hour over the course of the season.

For reference, on January 3, the windiest day of the year, the daily average wind speed is 13.4 miles per hour, while on August 2, the calmest day of the year, the daily average wind speed is 9.8 miles per hour.

Average Wind Speed in the Fall in Stratfield Mortimer

Average Wind Speed in the Fall in Stratfield MortimerSepOctNov0 mph0 mph5 mph5 mph10 mph10 mph15 mph15 mph20 mph20 mphSummerWinterSep 110.5 mphSep 110.5 mphNov 3012.0 mphNov 3012.0 mphOct 111.0 mphOct 111.0 mphNov 111.9 mphNov 111.9 mph
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 Stratfield Mortimer throughout the fall is predominantly from the west, with a peak proportion of 42% on September 1.

Wind Direction in the Fall in Stratfield Mortimer

Wind Direction in the Fall in Stratfield MortimerSepOctNov0%100%20%80%40%60%60%40%80%20%100%0%SummerWinterwestsoutheastnorth
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).

Stratfield Mortimer 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 Stratfield Mortimer is rapidly decreasing during the fall, falling by 10°F, from 63°F to 53°F, over the course of the season.

Average Water Temperature in the Fall in Stratfield Mortimer

Average Water Temperature in the Fall in Stratfield MortimerSepOctNov45°F45°F50°F50°F55°F55°F60°F60°F65°F65°FSummerWinterSep 163°FSep 163°FNov 3053°FNov 3053°FOct 161°FOct 161°FNov 157°FNov 157°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).

The growing season in Stratfield Mortimer typically lasts for 6.6 months (200 days), from around April 15 to around November 1, rarely starting before March 21 or after May 8, and rarely ending before October 9 or after November 29.

During the fall in Stratfield Mortimer, the chance that a given day is within the growing season is very rapidly decreasing falling from 100% to 9% over the course of the season.

Time Spent in Various Temperature Bands and the Growing Season in the Fall in Stratfield Mortimer

Time Spent in Various Temperature Bands and the Growing Season in the Fall in Stratfield Mortimergrowing seasonSepOctNov0%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%SummerWinter100%Sep 1100%Sep 1Nov 309%Nov 309%98%Oct 198%Oct 151%Nov 151%Nov 1Sep 9100%Sep 9100%freezingvery coldcoldcoolcomfortablewarm
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 Stratfield Mortimer are increasing during the fall, increasing by 386°F, from 1,321°F to 1,707°F, over the course of the season.

Growing Degree Days in the Fall in Stratfield Mortimer

Growing Degree Days in the Fall in Stratfield MortimerSepOctNov1,100°F1,100°F1,200°F1,200°F1,300°F1,300°F1,400°F1,400°F1,500°F1,500°F1,600°F1,600°F1,700°F1,700°F1,800°F1,800°F1,900°F1,900°FSummerWinterSep 11,321°FSep 11,321°FNov 301,707°FNov 301,707°FOct 11,559°FOct 11,559°FNov 11,673°FNov 11,673°F
The average growing degree days accumulated over the course of the fall, 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 Stratfield Mortimer is very rapidly decreasing during the fall, falling by 3.8 kWh, from 4.6 kWh to 0.8 kWh, over the course of the season.

Average Daily Incident Shortwave Solar Energy in the Fall in Stratfield Mortimer

Average Daily Incident Shortwave Solar Energy in the Fall in Stratfield MortimerSepOctNov0 kWh0 kWh1 kWh1 kWh2 kWh2 kWh3 kWh3 kWh4 kWh4 kWh5 kWh5 kWh6 kWh6 kWh7 kWh7 kWhSummerWinterSep 14.6 kWhSep 14.6 kWhNov 300.8 kWhNov 300.8 kWhOct 12.9 kWhOct 12.9 kWhNov 11.5 kWhNov 11.5 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 Stratfield Mortimer are 51.373 deg latitude, -1.035 deg longitude, and 167 ft elevation.

The topography within 2 miles of Stratfield Mortimer contains only modest variations in elevation, with a maximum elevation change of 213 feet and an average elevation above sea level of 217 feet. Within 10 miles contains only modest variations in elevation (597 feet). Within 50 miles contains significant variations in elevation (1,010 feet).

The area within 2 miles of Stratfield Mortimer is covered by cropland (65%) and grassland (21%), within 10 miles by cropland (38%) and grassland (26%), and within 50 miles by cropland (39%) and grassland (27%).

This report illustrates the typical weather in Stratfield Mortimer, 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 4 weather stations near enough to contribute to our estimation of the temperature and dew point in Stratfield Mortimer.

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

The stations contributing to this reconstruction are:

To get a sense of how much these sources agree with each other, you can view a comparison of Stratfield Mortimer and the stations that contribute to our estimates of its temperature history and climate. Please note that each source's contribution is adjusted for elevation and the relative change present in the MERRA-2 data.

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 © OpenStreetMap contributors.

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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