Average Weather in Sierra Vista Southeast Arizona, United States
In Sierra Vista Southeast, the summers are hot, the winters are cold and dry, and it is partly cloudy year round. Over the course of the year, the temperature typically varies from 36°F to 93°F and is rarely below 28°F or above 99°F.
Based on the tourism score, the best times of year to visit Sierra Vista Southeast for warm-weather activities are from mid May to late June and from late August to mid October.
The hot season lasts for 3.5 months, from May 23 to September 8, with an average daily high temperature above 86°F. The hottest day of the year is June 21, with an average high of 93°F and low of 67°F.
The cool season lasts for 3.1 months, from November 23 to February 25, with an average daily high temperature below 66°F. The coldest day of the year is January 3, with an average low of 36°F and high of 59°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
Villa Basilio Nievas, Argentina (5,135 miles away); Muzaffarābād, Pakistan (7,891 miles); and Gilgandra, Australia (7,918 miles) are the far-away foreign places with temperatures most similar to Sierra Vista Southeast (view comparison).
In Sierra Vista Southeast, 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 Sierra Vista Southeast begins around March 5 and lasts for 4.0 months, ending around July 5. On June 8, the clearest day of the year, the sky is clear, mostly clear, or partly cloudy 83% of the time, and overcast or mostly cloudy 17% of the time.
The cloudier part of the year begins around July 5 and lasts for 8.0 months, ending around March 5. On July 30, the cloudiest day of the year, the sky is overcast or mostly cloudy 53% of the time, and clear, mostly clear, or partly cloudy 47% of the time.
Cloud Cover Categories
A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. The chance of wet days in Sierra Vista Southeast varies very significantly throughout the year.
The wetter season lasts 2.2 months, from July 2 to September 9, with a greater than 28% chance of a given day being a wet day. The chance of a wet day peaks at 53% on July 29.
The drier season lasts 9.8 months, from September 9 to July 2. The smallest chance of a wet day is 3% on May 17.
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 53% on July 29.
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. Sierra Vista Southeast experiences significant seasonal variation in monthly rainfall.
The rainy period of the year lasts for 9.1 months, from June 15 to March 17, with a sliding 31-day rainfall of at least 0.5 inches. The most rain falls during the 31 days centered around July 30, with an average total accumulation of 3.0 inches.
The rainless period of the year lasts for 2.9 months, from March 17 to June 15. The least rain falls around May 23, with an average total accumulation of 0.1 inches.
Average Monthly Rainfall
The length of the day in Sierra Vista Southeast varies significantly over the course of the year. In 2018, the shortest day is December 21, with 10 hours, 6 minutes of daylight; the longest day is June 21, with 14 hours, 12 minutes of daylight.
Hours of Daylight and Twilight
The earliest sunrise is at 5:15 AM on June 11, and the latest sunrise is 2 hours, 5 minutes later at 7:21 AM on January 9. The earliest sunset is at 5:17 PM on December 3, and the latest sunset is 2 hours, 12 minutes later at 7:29 PM on June 30.
Daylight saving time (DST) is not observed in Sierra Vista Southeast during 2018.
Sunrise & Sunset with Twilight
The perceived humidity level in Sierra Vista Southeast, as measured by the percentage of time in which the humidity comfort level is muggy, oppressive, or miserable, does not vary significantly over the course of the year, staying within 2% of 2% throughout.
Humidity Comfort Levels
The average hourly wind speed in Sierra Vista Southeast experiences significant seasonal variation over the course of the year.
The windier part of the year lasts for 8.3 months, from October 17 to June 28, with average wind speeds of more than 7.7 miles per hour. The windiest day of the year is April 11, with an average hourly wind speed of 9.8 miles per hour.
The calmer time of year lasts for 3.7 months, from June 28 to October 17. The calmest day of the year is August 8, with an average hourly wind speed of 5.6 miles per hour.
Average Wind Speed
The predominant average hourly wind direction in Sierra Vista Southeast varies throughout the year.
The wind is most often from the west for 6.6 months, from February 2 to August 20 and for 1.0 weeks, from October 13 to October 20, with a peak percentage of 54% on June 8. The wind is most often from the east for 1.8 months, from August 20 to October 13 and for 3.4 months, from October 20 to February 2, with a peak percentage of 34% on September 15.
Best Time of Year to Visit
To characterize how pleasant the weather is in Sierra Vista Southeast 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 Sierra Vista Southeast for general outdoor tourist activities are from mid May to late June and from late August to mid October, with a peak score in the first week of June.
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 Sierra Vista Southeast for hot-weather activities is from early June to mid July, with a peak score in the last week of June.
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 Sierra Vista Southeast typically lasts for 8.8 months (270 days), from around March 2 to around November 27, rarely starting before January 28 or after March 28, and rarely ending before November 9 or after December 16.
Time Spent in Various Temperature Bands and the Growing Season
Based on growing degree days alone, the first spring blooms in Sierra Vista Southeast should appear around January 31, only rarely appearing before January 21 or after February 13.
Growing Degree Days
The average daily incident shortwave solar energy experiences extreme seasonal variation over the course of the year.
The brighter period of the year lasts for 2.5 months, from April 14 to June 30, with an average daily incident shortwave energy per square meter above 7.6 kWh. The brightest day of the year is June 3, with an average of 8.6 kWh.
The darker period of the year lasts for 3.0 months, from November 6 to February 7, with an average daily incident shortwave energy per square meter below 4.5 kWh. The darkest day of the year is December 24, with an average of 3.5 kWh.
Average Daily Incident Shortwave Solar Energy
For the purposes of this report, the geographical coordinates of Sierra Vista Southeast are 31.454 deg latitude, -110.216 deg longitude, and 4,564 ft elevation.
The topography within 2 miles of Sierra Vista Southeast contains only modest variations in elevation, with a maximum elevation change of 404 feet and an average elevation above sea level of 4,567 feet. Within 10 miles contains only modest variations in elevation (5,397 feet). Within 50 miles also contains extreme variations in elevation (6,368 feet).
The area within 2 miles of Sierra Vista Southeast is covered by shrubs (93%), within 10 miles by shrubs (67%) and grassland (18%), and within 50 miles by shrubs (67%) and grassland (25%).
This report illustrates the typical weather in Sierra Vista Southeast, 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 2 weather stations near enough to contribute to our estimation of the temperature and dew point in Sierra Vista Southeast.
For each station, the records are corrected for the elevation difference between that station and Sierra Vista Southeast 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 Sierra Vista Southeast is computed as the weighted average of the individual contributions from each station, with weights proportional to the inverse of the distance between Sierra Vista Southeast and a given station.
Time zones for aiports and weather stations are provided by AskGeo.com .