October Weather in Centerville Iowa, United States
Daily high temperatures decrease by 14°F, from 70°F to 55°F, rarely falling below 39°F or exceeding 82°F.
Daily low temperatures decrease by 11°F, from 48°F to 37°F, rarely falling below 25°F or exceeding 60°F.
For reference, on July 20, the hottest day of the year, temperatures in Centerville typically range from 65°F to 85°F, while on January 22, the coldest day of the year, they range from 14°F to 30°F.
Average High and Low Temperature in October in Centerville
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 Centerville
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 month of October in Centerville experiences increasing cloud cover, with the percentage of time that the sky is overcast or mostly cloudy increasing from 34% to 45%.
The clearest day of the month is October 1, with clear, mostly clear, or partly cloudy conditions 66% of the time.
For reference, on December 28, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 55%, while on July 28, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 71%.
Cloud Cover Categories in October in Centerville
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 Centerville, the chance of a wet day over the course of October is rapidly decreasing, starting the month at 26% and ending it at 19%.
For reference, the year's highest daily chance of a wet day is 43% on June 7, and its lowest chance is 8% on January 11.
Probability of Precipitation in October in Centerville
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 Centerville is decreasing, starting the month at 2.5 inches, when it rarely exceeds 4.3 inches or falls below 1.0 inches, and ending the month at 1.7 inches, when it rarely exceeds 3.2 inches or falls below 0.5 inches.
Average Monthly Rainfall in October in Centerville
Over the course of October in Centerville, 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, 21 minutes, implying an average daily decrease of 2 minutes, 42 seconds, and weekly decrease of 18 minutes, 54 seconds.
The shortest day of the month is October 31, with 10 hours, 23 minutes of daylight and the longest day is October 1, with 11 hours, 44 minutes of daylight.
Hours of Daylight and Twilight in October in Centerville
The earliest sunrise of the month in Centerville is 7:13 AM on October 1 and the latest sunrise is 35 minutes later at 7:47 AM on October 31.
The latest sunset is 6:56 PM on October 1 and the earliest sunset is 46 minutes earlier at 6:10 PM on October 31.
Daylight saving time is observed in Centerville during 2021, 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 5:40 AM and sets 15 hours, 15 minutes later, at 8:55 PM, while on December 21, the shortest day of the year, it rises at 7:40 AM and sets 9 hours, 6 minutes later, at 4:47 PM.
Sunrise & Sunset with Twilight and Daylight Saving Time in October in Centerville
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 in Centerville
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 Centerville is gradually decreasing during October, falling from 4% to 0% over the course of the month.
For reference, on July 21, the muggiest day of the year, there are muggy conditions 53% of the time, while on November 10, the least muggy day of the year, there are muggy conditions 0% of the time.
Humidity Comfort Levels in October in Centerville
dry 55°F comfortable 60°F humid 65°F muggy 70°F oppressive 75°F miserable
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 Centerville is gradually increasing during October, increasing from 10.6 miles per hour to 11.3 miles per hour over the course of the month.
For reference, on April 9, the windiest day of the year, the daily average wind speed is 13.1 miles per hour, while on August 3, the calmest day of the year, the daily average wind speed is 8.1 miles per hour.
Average Wind Speed in October in Centerville
The hourly average wind direction in Centerville throughout October is predominantly from the south, with a peak proportion of 39% on October 1.
Wind Direction in October in Centerville
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 Centerville typically lasts for 5.8 months (177 days), from around April 19 to around October 13, rarely starting before April 1 or after May 7, and rarely ending before September 24 or after November 3.
During October in Centerville, the chance that a given day is within the growing season is very rapidly decreasing falling from 78% to 14% over the course of the month.
Time Spent in Various Temperature Bands and the Growing Season in October in Centerville
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
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 Centerville are gradually increasing during October, increasing by 167°F, from 3,026°F to 3,193°F, over the course of the month.
Growing Degree Days in October in Centerville
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 Centerville is decreasing during October, falling by 1.5 kWh, from 4.3 kWh to 2.8 kWh, over the course of the month.
Average Daily Incident Shortwave Solar Energy in October in Centerville
For the purposes of this report, the geographical coordinates of Centerville are 42.093 deg latitude, -93.936 deg longitude, and 912 ft elevation.
The topography within 2 miles of Centerville contains only modest variations in elevation, with a maximum elevation change of 299 feet and an average elevation above sea level of 1,045 feet. Within 10 miles also contains only modest variations in elevation (390 feet). Within 50 miles contains only modest variations in elevation (741 feet).
The area within 2 miles of Centerville is covered by trees (50%) and cropland (50%), within 10 miles by cropland (83%) and trees (15%), and within 50 miles by cropland (93%).
This report illustrates the typical weather in Centerville, 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 Centerville.
For each station, the records are corrected for the elevation difference between that station and Centerville 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 Centerville is computed as the weighted average of the individual contributions from each station, with weights proportional to the inverse of the distance between Centerville and a given station.
The stations contributing to this reconstruction are: Boone Municipal Airport (KBNW, 74%, 9 kilometers, southeast); Perry Municipal Airport (KPRO, 14%, 35 kilometers, southwest); and Webster City Municipal Airport (KEBS, 12%, 39 kilometers, north).
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.
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.