Average Weather in October in Helston United Kingdom
Daily high temperatures decrease by 5°F, from 60°F to 55°F, rarely falling below 51°F or exceeding 63°F.
Daily low temperatures decrease by 4°F, from 52°F to 48°F, rarely falling below 40°F or exceeding 57°F.
For reference, on August 3, the hottest day of the year, temperatures in Helston typically range from 56°F to 66°F, while on February 21, the coldest day of the year, they range from 40°F to 48°F.
Average High and Low Temperature in October
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
The month of October in Helston experiences gradually increasing cloud cover, with the percentage of time that the sky is overcast or mostly cloudy increasing from 53% to 59%.
The clearest day of the month is October 1, with clear, mostly clear, or partly cloudy conditions 47% of the time.
For reference, on December 25, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 66%, while on July 24, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 55%.
Cloud Cover Categories in October
0% clear 20% mostly clear 40% partly cloudy 60% mostly cloudy 80% overcast 100%
A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. In Helston, the chance of a wet day over the course of October is very rapidly increasing, starting the month at 33% and ending it at 41%.
For reference, the year's highest daily chance of a wet day is 45% on January 6, and its lowest chance is 22% on July 24.
Probability of Precipitation in October
The average sliding 31-day rainfall during October in Helston is increasing, starting the month at 2.6 inches, when it rarely exceeds 4.6 inches or falls below 1.1 inches, and ending the month at 3.3 inches, when it rarely exceeds 5.2 inches or falls below 1.5 inches.
Average Monthly Rainfall in October
Over the course of October in Helston, 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, 48 minutes, implying an average daily decrease of 3 minutes, 37 seconds, and weekly decrease of 25 minutes, 16 seconds.
The shortest day of the month is October 31, with 9 hours, 50 minutes of daylight and the longest day is October 1, with 11 hours, 38 minutes of daylight.
Hours of Daylight and Twilight in October
The latest sunrise of the month in Helston is 8:07 AM on October 30 and the earliest sunrise is 58 minutes earlier at 7:09 AM on October 31.
The latest sunset is 6:59 PM on October 1 and the earliest sunset is 2 hours, 0 minutes earlier at 4:59 PM on October 31.
Daylight saving time (DST) ends at 1:00 AM on October 31, 2021, shifting sunrise and sunset to be an hour earlier.
For reference, on June 21, the longest day of the year, the Sun rises at 5:11 AM and sets 16 hours, 23 minutes later, at 9:34 PM, while on December 21, the shortest day of the year, it rises at 8:17 AM and sets 8 hours, 3 minutes later, at 4:20 PM.
Sunrise & Sunset with Twilight and Daylight Saving Time in October
The figure below presents a compact representation of key lunar data for October 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. 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
The chance that a given day will be muggy in Helston is essentially constant during October, remaining around 0% throughout.
For reference, on August 9, the muggiest day of the year, there are muggy conditions 1% of the time, while on October 10, the least muggy day of the year, there are muggy conditions 0% of the time.
Humidity Comfort Levels in October
dry 55°F comfortable 60°F humid 65°F muggy 70°F oppressive 75°F miserable
The average hourly wind speed in Helston is rapidly increasing during October, increasing from 15.8 miles per hour to 18.6 miles per hour over the course of the month.
For reference, on January 1, the windiest day of the year, the daily average wind speed is 20.9 miles per hour, while on August 4, the calmest day of the year, the daily average wind speed is 13.2 miles per hour.
Average Wind Speed in October
The hourly average wind direction in Helston throughout October is predominantly from the west, with a peak proportion of 34% on October 31.
Wind Direction in October
Helston 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 Helston is gradually decreasing during October, falling by 3°F, from 59°F to 56°F, over the course of the month.
Average Water Temperature in October
The growing season in Helston typically lasts for 9.9 months (299 days), from around February 27 to around December 22, rarely starting before January 20 or after April 5, and rarely ending before November 21 or after January 15.
The month of October in Helston is reliably fully within the growing season.
Time Spent in Various Temperature Bands and the Growing Season in October
The average accumulated growing degree days in Helston are gradually increasing during October, increasing by 138°F, from 1,264°F to 1,401°F, over the course of the month.
Growing Degree Days in October
The average daily incident shortwave solar energy in Helston is decreasing during October, falling by 1.4 kWh, from 3.1 kWh to 1.7 kWh, over the course of the month.
Average Daily Incident Shortwave Solar Energy in October
For the purposes of this report, the geographical coordinates of Helston are 50.103 deg latitude, -5.270 deg longitude, and 197 ft elevation.
The topography within 2 miles of Helston contains significant variations in elevation, with a maximum elevation change of 571 feet and an average elevation above sea level of 224 feet. Within 10 miles contains significant variations in elevation (830 feet). Within 50 miles also contains very significant variations in elevation (1,339 feet).
The area within 2 miles of Helston is covered by cropland (68%), artificial surfaces (18%), and grassland (10%), within 10 miles by cropland (42%) and water (29%), and within 50 miles by water (85%).
This report illustrates the typical weather in Helston, 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 3 weather stations near enough to contribute to our estimation of the temperature and dew point in Helston.
For each station, the records are corrected for the elevation difference between that station and Helston 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 Helston is computed as the weighted average of the individual contributions from each station, with weights proportional to the inverse of the distance between Helston and a given station.
The stations contributing to this reconstruction are: Culdrose (95%, 2.2 kilometers, southeast); Land's End Airport (2.8%, 32 kilometers, west); and Newquay Cornwall Airport (1.9%, 41 kilometers, northeast).
Time zones for airports and weather stations are provided by AskGeo.com .