October Weather in Deltana United StatesDaily high temperatures decrease by 21°F, from 42°F to 21°F, rarely falling below 7°F or exceeding 53°F. Daily low temperatures decrease by 21°F, from 29°F to 8°F, rarely falling below -10°F or exceeding 40°F. For reference, on July 6, the hottest day of the year, temperatures in Deltana typically range from 52°F to 68°F, while on January 16, the coldest day of the year, they range from -6°F to 8°F. 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. Pyt-Yakh, Russia (3,605 miles away); Sorsk, Russia (3,775 miles); and Vidim, Russia (3,380 miles) are the far-away foreign places with temperatures most similar to Deltana (view comparison). CloudsThe month of October in Deltana experiences essentially constant cloud cover, with the percentage of time that the sky is overcast or mostly cloudy remaining about 63% throughout the month. The clearest day of the month is October 26, with clear, mostly clear, or partly cloudy conditions 39% of the time. For reference, on September 26, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 66%, while on March 8, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 47%. PrecipitationA wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. In Deltana, the chance of a wet day over the course of October is very rapidly decreasing, starting the month at 25% and ending it at 11%. For reference, the year's highest daily chance of a wet day is 45% on July 2, and its lowest chance is 5% on March 17. Over the course of October in Deltana, the chance of a day with only rain decreases from 17% to 1%, the chance of a day with mixed snow and rain decreases from 4% to 2%, and the chance of a day with only snow increases from 4% to 9%. RainfallTo 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 Deltana is decreasing, starting the month at 1.0 inches, when it rarely exceeds 2.1 inches or falls below 0.3 inches, and ending the month at 0.1 inches, when it rarely exceeds 0.4 inches. SnowfallAs with rainfall, we consider the snowfall accumulated over a sliding 31-day period centered around each day. The average sliding 31-day snowfall during October in Deltana is increasing, starting the month at 3.3 inches, when it rarely exceeds 8.8 inches or falls below 0.2 inches, and ending the month at 4.8 inches, when it rarely exceeds 11.0 inches or falls below 0.5 inches. The highest average 31-day accumulation is 4.8 inches on October 28. SunOver the course of October in Deltana, the length of the day is very rapidly decreasing. From the start to the end of the month, the length of the day decreases by 3 hours, 11 minutes, implying an average daily decrease of 6 minutes, 23 seconds, and weekly decrease of 44 minutes, 40 seconds. The shortest day of the month is October 31, with 8 hours, 4 minutes of daylight and the longest day is October 1, with 11 hours, 15 minutes of daylight. The earliest sunrise of the month in Deltana is 7:51 AM on October 1 and the latest sunrise is 1 hour, 30 minutes later at 9:21 AM on October 31. The latest sunset is 7:07 PM on October 1 and the earliest sunset is 1 hour, 41 minutes earlier at 5:25 PM on October 31. Daylight saving time is observed in Deltana during 2024, but it neither starts nor ends during October, so the entire month is in standard time. For reference, on June 20, the longest day of the year, the Sun rises at 3:14 AM and sets 20 hours, 55 minutes later, at 12:10 AM, while on December 21, the shortest day of the year, it rises at 10:31 AM and sets 4 hours, 16 minutes later, at 2:47 PM. 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. MoonThe 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.
HumidityWe 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 Deltana is essentially constant during October, remaining around 0% throughout. WindThis 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 Deltana is essentially constant during October, remaining within 0.1 miles per hour of 5.3 miles per hour throughout. For reference, on January 8, the windiest day of the year, the daily average wind speed is 6.9 miles per hour, while on July 13, the calmest day of the year, the daily average wind speed is 4.7 miles per hour. The hourly average wind direction in Deltana throughout October is predominantly from the south, with a peak proportion of 57% on October 31. Growing SeasonDefinitions 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 Deltana typically lasts for 3.8 months (116 days), from around May 14 to around September 7, rarely starting before April 29 or after May 30, and rarely ending before August 18 or after September 28. The month of October in Deltana is very likely fully outside of the growing season, with the chance that a given day is in the growing season gradually decreasing from 6% to -0% over the course of the month. 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 Deltana are essentially constant during October, remaining within 1°F of 824°F throughout. Solar EnergyThis 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 Deltana is decreasing during October, falling by 1.1 kWh, from 1.7 kWh to 0.7 kWh, over the course of the month. TopographyFor the purposes of this report, the geographical coordinates of Deltana are 63.872 deg latitude, -145.218 deg longitude, and 1,220 ft elevation. The topography within 2 miles of Deltana is essentially flat, with a maximum elevation change of 95 feet and an average elevation above sea level of 1,225 feet. Within 10 miles is essentially flat (4,495 feet). Within 50 miles also contains extreme variations in elevation (12,917 feet). The area within 2 miles of Deltana is covered by trees (93%), within 10 miles by trees (42%) and cropland (21%), and within 50 miles by trees (39%) and shrubs (27%). Data SourcesThis report illustrates the typical weather in Deltana, based on a statistical analysis of historical hourly weather reports and model reconstructions from January 1, 1980 to December 31, 2016. Temperature and Dew PointThere are 2 weather stations near enough to contribute to our estimation of the temperature and dew point in Deltana. For each station, the records are corrected for the elevation difference between that station and Deltana 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 Deltana is computed as the weighted average of the individual contributions from each station, with weights proportional to the inverse of the distance between Deltana 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 Deltana 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 DataAll 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. DisclaimerThe 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. Please review our full terms contained on our Terms of Service page. |