Average Weather in Seymour Texas, United States
In Seymour, the summers are hot, humid, and mostly clear and the winters are cold, windy, and partly cloudy. Over the course of the year, the temperature typically varies from 33°F to 98°F and is rarely below 22°F or above 105°F.
Based on the beach/pool score, the best time of year to visit Seymour for hot-weather activities is from early June to early September.
The hot season lasts for 3.5 months, from May 30 to September 14, with an average daily high temperature above 89°F. The hottest day of the year is July 25, with an average high of 98°F and low of 75°F.
The cool season lasts for 3.0 months, from November 24 to February 22, with an average daily high temperature below 64°F. The coldest day of the year is January 4, with an average low of 33°F and high of 55°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
In Seymour, the average percentage of the sky covered by clouds experiences mild seasonal variation over the course of the year.
The clearer part of the year in Seymour begins around April 11 and lasts for 7.0 months, ending around November 12. On October 5, the clearest day of the year, the sky is clear, mostly clear, or partly cloudy 75% of the time, and overcast or mostly cloudy 25% of the time.
The cloudier part of the year begins around November 12 and lasts for 5.0 months, ending around April 11. On February 24, the cloudiest day of the year, the sky is overcast or mostly cloudy 42% of the time, and clear, mostly clear, or partly cloudy 58% of the time.
Cloud Cover Categories
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. The chance of wet days in Seymour varies throughout the year.
The wetter season lasts 2.3 months, from April 24 to July 2, with a greater than 24% chance of a given day being a wet day. The chance of a wet day peaks at 38% on June 2.
The drier season lasts 9.7 months, from July 2 to April 24. The smallest chance of a wet day is 9% on January 11.
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 throughout the year is rain alone, with a peak probability of 38% on June 2.
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 of the year. Seymour experiences significant seasonal variation in monthly rainfall.
Rain falls throughout the year in Seymour. The most rain falls during the 31 days centered around May 28, with an average total accumulation of 3.8 inches.
The least rain falls around January 14, with an average total accumulation of 0.9 inches.
Average Monthly Rainfall
The length of the day in Seymour varies significantly over the course of the year. In 2021, the shortest day is December 21, with 9 hours, 55 minutes of daylight; the longest day is June 20, with 14 hours, 23 minutes of daylight.
Hours of Daylight and Twilight
The earliest sunrise is at 6:26 AM on June 12, and the latest sunrise is 1 hour, 34 minutes later at 8:00 AM on November 6. The earliest sunset is at 5:28 PM on December 3, and the latest sunset is 3 hours, 23 minutes later at 8:51 PM on June 28.
Daylight saving time (DST) is observed in Seymour during 2021, starting in the spring on March 14, lasting 7.8 months, and ending in the fall on November 7.
Sunrise & Sunset with Twilight and Daylight Saving Time
The figure below presents a compact representation of key lunar data for 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.
Moon Rise, Set & Phases
Seymour experiences significant seasonal variation in the perceived humidity.
The muggier period of the year lasts for 4.6 months, from May 15 to October 3, during which time the comfort level is muggy, oppressive, or miserable at least 10% of the time. The muggiest day of the year is June 23, with muggy conditions 40% of the time.
The least muggy day of the year is January 29, when muggy conditions are essentially unheard of.
Humidity Comfort Levels
dry 55°F comfortable 60°F humid 65°F muggy 70°F oppressive 75°F miserable
The average hourly wind speed in Seymour experiences significant seasonal variation over the course of the year.
The windier part of the year lasts for 4.4 months, from February 16 to June 29, with average wind speeds of more than 10.5 miles per hour. The windiest day of the year is April 2, with an average hourly wind speed of 12.1 miles per hour.
The calmer time of year lasts for 7.6 months, from June 29 to February 16. The calmest day of the year is August 23, with an average hourly wind speed of 9.0 miles per hour.
Average Wind Speed
The predominant average hourly wind direction in Seymour varies throughout the year.
The wind is most often from the south for 9.7 months, from February 18 to December 8, with a peak percentage of 72% on June 25. The wind is most often from the north for 2.4 months, from December 8 to February 18, with a peak percentage of 36% on January 1.
Best Time of Year to Visit
To characterize how pleasant the weather is in Seymour throughout the year, we compute two travel scores.
The tourism score favors clear, rainless days with perceived temperatures between 65°F and 80°F. Based on this score, the best times of year to visit Seymour for general outdoor tourist activities are from late April to late June and from late August to mid October, with a peak score in the third week of September.
The beach/pool score favors clear, rainless days with perceived temperatures between 75°F and 90°F. Based on this score, the best time of year to visit Seymour for hot-weather activities is from early June to early September, with a peak score in the first week of July.
For each hour between 8:00 AM and 9:00 PM of each day in the analysis period (1980 to 2016), independent scores are computed for perceived temperature, cloud cover, and total precipitation. Those scores are combined into a single hourly composite score, which is then aggregated into days, averaged over all the years in the analysis period, and smoothed.
Our cloud cover score is 10 for fully clear skies, falling linearly to 9 for mostly clear skies, and to 1 for fully overcast skies.
Our precipitation score, which is based on the three-hour precipitation centered on the hour in question, is 10 for no precipitation, falling linearly to 9 for trace precipitation, and to 0 for 0.04 inches of precipitation or more.
Our tourism temperature score is 0 for perceived temperatures below 50°F, rising linearly to 9 for 65°F, to 10 for 75°F, falling linearly to 9 for 80°F, and to 1 for 90°F or hotter.
Our beach/pool temperature score is 0 for perceived temperatures below 65°F, rising linearly to 9 for 75°F, to 10 for 82°F, falling linearly to 9 for 90°F, and to 1 for 100°F or hotter.
The growing season in Seymour typically lasts for 8.0 months (246 days), from around March 16 to around November 17, rarely starting before February 21 or after April 9, and rarely ending before October 28 or after December 6.
Time Spent in Various Temperature Bands and the Growing Season
Based on growing degree days alone, the first spring blooms in Seymour should appear around February 5, only rarely appearing before January 25 or after February 20.
Growing Degree Days
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 4.3 months, from April 11 to August 20, with an average daily incident shortwave energy per square meter above 6.4 kWh. The brightest day of the year is July 8, with an average of 7.3 kWh.
The darker period of the year lasts for 3.0 months, from November 7 to February 6, with an average daily incident shortwave energy per square meter below 3.8 kWh. The darkest day of the year is December 22, with an average of 2.9 kWh.
Average Daily Incident Shortwave Solar Energy
For the purposes of this report, the geographical coordinates of Seymour are 33.594 deg latitude, -99.260 deg longitude, and 1,289 ft elevation.
The topography within 2 miles of Seymour contains only modest variations in elevation, with a maximum elevation change of 144 feet and an average elevation above sea level of 1,298 feet. Within 10 miles also contains only modest variations in elevation (305 feet). Within 50 miles contains only modest variations in elevation (1,017 feet).
The area within 2 miles of Seymour is covered by cropland (60%), grassland (15%), artificial surfaces (14%), and shrubs (11%), within 10 miles by cropland (44%) and grassland (35%), and within 50 miles by grassland (44%) and cropland (32%).
This report illustrates the typical weather in Seymour, 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 Seymour.
For each station, the records are corrected for the elevation difference between that station and Seymour 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 Seymour is computed as the weighted average of the individual contributions from each station, with weights proportional to the inverse of the distance between Seymour and a given station.
The stations contributing to this reconstruction are: Wilbarger Co (38%, 70 kilometers, north); Kickapoo Downtown Airport (33%, 77 kilometers, east); and Graham Municipal Airport (29%, 85 kilometers, southeast).
Time zones for airports and weather stations are provided by AskGeo.com .