Average Weather in Topeka Kansas, United States
In Topeka, the temperature typically varies from 22°F to 90°F over the course of the year, and is rarely below 6°F or above 99°F.
The hot season lasts for 3.6 months, from May 30 to September 17, with an average daily high temperature above 80°F. The hottest day of the year is July 20, with an average high of 90°F and low of 70°F.
The cold season lasts for 3.0 months, from November 27 to February 26, with an average daily high temperature below 50°F. The coldest day of the year is January 6, with an average low of 22°F and high of 40°F.
Average High and Low Temperature
The figure below shows you a compact characterization of the entire year of hourly average temperatures. The horizontal axis is the day of the year, the vertical axis is the hour of the day, and the color is the average temperature for that hour and day.
Average Hourly Temperature
The length of the day in Topeka varies significantly over the course of the year. In 2017, the shortest day is December 21, with 9 hours, 25 minutes of daylight; the longest day is June 21, with 14 hours, 55 minutes of daylight.
Hours of Daylight and Twilight
The earliest sunrise is at 5:56 AM on June 13, and the latest sunrise is 1 hour, 58 minutes later at 7:53 AM on November 4. The earliest sunset is at 5:00 PM on December 7, and the latest sunset is 3 hours, 53 minutes later at 8:52 PM on June 27.
Daylight saving time (DST) is observed in Topeka during 2017, starting in the spring on March 12, lasting 7.8 months, and ending in the fall on November 5.
Sunrise & Sunset with Twilight and Daylight Saving Time
In Topeka, the average percentage of the sky covered by clouds experiences significant seasonal variation over the course of the year.
The clearer part of the year in Topeka begins around June 8 and lasts for 4.8 months, ending around November 3. On September 14, the clearest day of the year, the sky is clear, mostly clear, or partly cloudy 72% of the time, and overcast or mostly cloudy 28% of the time.
The cloudier part of the year begins around November 3 and lasts for 7.2 months, ending around June 8. On February 12, the cloudiest day of the year, the sky is overcast or mostly cloudy 50% of the time, and clear, mostly clear, or partly cloudy 50% of the time.
A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. The chance of wet days in Topeka varies significantly throughout the year.
The wetter season lasts 5.7 months, from April 6 to September 26, with a greater than 27% chance of a given day being a wet day. The chance of a wet day peaks at 45% on June 8.
The drier season lasts 6.3 months, from September 26 to April 6. The smallest chance of a wet day is 8% on January 12.
Among wet days, we distinguish between those that experience rain alone, snow alone, or a mixture of the two. Based on this categorization, the most common form of precipitation in Topeka changes throughout the year.
Rain alone is the most common for 12 months, from January 15 to January 3. The highest chance of a day with rain alone is 45% on June 8.
Snow alone is the most common for 1.7 weeks, from January 3 to January 15. The highest chance of a day with snow alone is 5% on January 31.
Daily Chance of Precipitation
To show variation within the months and not just the monthly totals, we show the rainfall accumulated over a sliding 31-day period centered around each day in the year. Topeka experiences very significant seasonal variation in monthly rainfall.
The rainy period of the year lasts for 11 months, from January 25 to January 1, with a sliding 31-day rainfall of at least 0.5 inches. The most rain falls during the 31 days centered around June 1, with an average total accumulation of 4.9 inches.
The rainless period of the year lasts for 3.4 weeks, from January 1 to January 25. The least rain falls around January 12, with and average total accumulation of 0.4 inches.
Average Monthly Rainfall
We report snowfall in liquid-equivalent terms. The actual depth of new snowfall is typically between 5 and 10 times the liquid-equivalent amount, assuming the ground is frozen. Colder, drier snow tends to be on the higher end of that range and warmer, wetter snow on the lower end.
As with rainfall, we consider the snowfall accumulated over a sliding 31-day period centered around each day in the year. Topeka experiences some seasonal variation in monthly liquid-equivalent snowfall.
The snowy period of the year lasts for 3.8 months, from November 21 to March 14, with a sliding 31-day liquid-equivalent snowfall of at least 0.1 inches. The most snow falls during the 31 days centered around January 30, with an average total liquid-equivalent accumulation of 0.3 inches.
The snowless period of the year lasts for 8.2 months, from March 14 to November 21. The least snow falls around July 11, with an average total liquid-equivalent accumulation of 0.0 inches.
Average Liquid-Equivalent Monthly Snowfall
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.
Topeka experiences very significant seasonal variation in the perceived humidity.
The muggier period of the year lasts for 3.8 months, from May 27 to September 20, during which time the comfort level is muggy, oppressive, or miserable at least 18% of the time. The muggiest day of the year is July 23, with muggy conditions 69% of the time.
The least muggy day of the year is February 8, when muggy conditions are essentially unheard of.
Humidity Comfort Levels
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 Topeka experiences mildly seasonal variation over the course of the year.
The windier part of the year lasts for 7.3 months, from October 13 to May 22, with average wind speeds of more than 5.8 miles per hour. The windiest day of the year is April 1, with an average hourly wind speed of 7.0 miles per hour.
The calmer time of year lasts for 4.7 months, from May 22 to October 13. The calmest day of the year is August 7, with an average hourly wind speed of 4.6 miles per hour.
Average Wind Speed
The predominant average hourly wind direction in Topeka varies throughout the year.
The wind is most often from the south for 8.6 months, from March 20 to December 8, with a peak percentage of 58% on July 5. The wind is most often from the north for 3.4 months, from December 8 to March 20, with a peak percentage of 37% on February 18.
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 experiences significant seasonal variation over the course of the year.
The brighter period of the year lasts for 3.9 months, from April 27 to August 24, with an average daily incident shortwave energy per square meter above 6.1 kWh. The brightest day of the year is July 9, with an average of 7.1 kWh.
The darker period of the year lasts for 3.2 months, from November 4 to February 10, with an average daily incident shortwave energy per square meter below 3.2 kWh. The darkest day of the year is December 20, with an average of 2.1 kWh.
Average Daily Incident Shortwave Solar Energy
For the purposes of this report, the geographical coordinates of Topeka are 39.048 deg latitude, -95.678 deg longitude, and 912 ft elevation.
The topography within 2 miles of Topeka contains only modest variations in elevation, with a maximum elevation change of 138 feet, and an average elevation above sea level of 909 feet. Within 10 miles also contains only modest variations in elevation (364 feet). Within 50 miles contains very significant variations in elevation (873 feet).
The area within 2 miles of Topeka is covered by artificial surfaces (97%), within 10 miles by cropland (47%) and artificial surfaces (22%), and within 50 miles by cropland (47%) and grassland (40%).
This report illustrates the typical weather in Topeka, 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 Topeka.
For each station, the records are corrected for the elevation difference between that station and Topeka 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 Topeka is computed as the weighted average of the individual contributions from each station, with weights proportional to the inverse of the distance between Topeka and a given station.
The stations contributing to this reconstruction are: Philip Billard Municipal Airport (76%, 5.3 kilometers, northeast), Forbes Field Airport (23%, 11 kilometers, south), and Manhattan Regional Airport (1.2%, 87 kilometers, west).
All data relating to the Sun's position (e.g., sunrise and sunset) are computed using astronomical formulas from the book, Astronomical Tables of the Sun, Moon and Planets , 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 aiports and weather stations are provided by AskGeo.com .