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Average Weather in Opp Alabama, United States

In Opp, the summers are long, hot, and oppressive; the winters are short and cold; and it is wet and partly cloudy year round. Over the course of the year, the temperature typically varies from 42°F to 92°F and is rarely below 28°F or above 97°F.

Climate Summary

coolcomfortablewarmhotwarmcoolJanFebMarAprMayJunJulAugSepOctNovDec67%67%45%45%clearovercastprecipitation: 5.4 inprecipitation: 5.4 in3.1 in3.1 inmuggy: 97%muggy: 97%1%1%drydrytourism score: 6.4tourism score: 6.42.52.5
Click on each chart for more information.

Based on the tourism score, the best times of year to visit Opp for warm-weather activities are from mid April to late May and from mid September to late October.

Temperature

The hot season lasts for 4.2 months, from May 18 to September 23, with an average daily high temperature above 85°F. The hottest day of the year is July 22, with an average high of 92°F and low of 74°F.

The cool season lasts for 2.8 months, from December 1 to February 23, with an average daily high temperature below 67°F. The coldest day of the year is January 17, with an average low of 42°F and high of 61°F.

Average High and Low Temperature

The daily average high (red line) and low (blue line) temperature, with 25th to 75th and 10th to 90th percentile bands. The thin dotted lines are the corresponding average perceived temperatures.

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

Average Hourly Temperature in OppJanFebMarAprMayJunJulAugSepOctNovDec12 AM4 AM8 AM12 PM4 PM8 PM12 AMcoldcoldcoldcoldcoolcoolwarmwarmhotcomfortablevery cold
The average hourly temperature, color coded into bands: 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 shaded overlays indicate night and civil twilight.

Mezzouna, Tunisia (5,346 miles away); Udhampur, India (7,846 miles); and Roxby Downs, Australia (9,906 miles) are the far-away foreign places with temperatures most similar to Opp (view comparison).

Clouds

In Opp, 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 Opp begins around August 30 and lasts for 3.3 months, ending around December 8. On October 27, the clearest day of the year, the sky is clear, mostly clear, or partly cloudy 67% of the time, and overcast or mostly cloudy 33% of the time.

The cloudier part of the year begins around December 8 and lasts for 8.7 months, ending around August 30. On July 13, the cloudiest day of the year, the sky is overcast or mostly cloudy 55% of the time, and clear, mostly clear, or partly cloudy 45% of the time.

Cloud Cover Categories

Cloud Cover Categories in OppclearercloudierJanFebMarAprMayJunJulAugSepOctNovDec0%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%Oct 2767%Oct 2767%Jul 1345%Jul 1345%Aug 3056%Aug 3056%Dec 857%Dec 857%clearpartly cloudymostly cloudyovercastmostly clear
The percentage of time spent in each cloud cover band, categorized by the percentage of the sky covered by clouds: clear < 20% < mostly clear < 40% < partly cloudy < 60% < mostly cloudy < 80% < overcast.

Precipitation

A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. The chance of wet days in Opp varies significantly throughout the year.

The wetter season lasts 2.9 months, from June 4 to September 1, with a greater than 38% chance of a given day being a wet day. The chance of a wet day peaks at 56% on July 18.

The drier season lasts 9.1 months, from September 1 to June 4. The smallest chance of a wet day is 19% on October 15.

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 56% on July 18.

Daily Chance of Precipitation

Daily Chance of Precipitation in OppwetdrydryJanFebMarAprMayJunJulAugSepOctNovDec0%10%20%30%40%50%60%70%80%90%100%Jul 1856%Jul 1856%Oct 1519%Oct 1519%Jan 128%Jan 128%Jun 438%Jun 438%Sep 138%Sep 138%rain
The percentage of days in which various types of precipitation are observed, excluding trace quantities: rain alone, snow alone, and mixed (both rain and snow fell in the same day).

Rainfall

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. Opp experiences significant seasonal variation in monthly rainfall.

Rain falls throughout the year in Opp. The most rain falls during the 31 days centered around March 7, with an average total accumulation of 5.4 inches.

The least rain falls around October 19, with an average total accumulation of 3.1 inches.

Average Monthly Rainfall

The average rainfall (solid line) accumulated over the course of a sliding 31-day period centered on the day in question, with 25th to 75th and 10th to 90th percentile bands. The thin dotted line is the corresponding average liquid-equivalent snowfall.

Sun

The length of the day in Opp varies significantly over the course of the year. In 2017, the shortest day is December 21, with 10 hours, 7 minutes of daylight; the longest day is June 20, with 14 hours, 11 minutes of daylight.

Hours of Daylight and Twilight

The number of hours during which the Sun is visible (black line). From bottom (most yellow) to top (most gray), the color bands indicate: full daylight, twilight (civil, nautical, and astronomical), and full night.

The earliest sunrise is at 5:40 AM on June 11, and the latest sunrise is 1 hour, 23 minutes later at 7:03 AM on November 4. The earliest sunset is at 4:41 PM on December 3, and the latest sunset is 3 hours, 11 minutes later at 7:53 PM on June 30.

Daylight saving time (DST) is observed in Opp 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

Sunrise & Sunset with Twilight and Daylight Saving Time in OppJanFebMarAprMayJunJulAugSepOctNovDec12 AM2 AM4 AM6 AM8 AM10 AM12 PM2 PM4 PM6 PM8 PM10 PM12 AMJun 115:40 AMJun 115:40 AM7:53 PMJun 307:53 PMJun 30Dec 34:41 PMDec 34:41 PM7:03 AMNov 47:03 AMNov 4Mar 12DSTMar 12DSTDSTNov 5DSTNov 5daynightnightnightnightSolarMidnightSolarMidnightSolarNoonSunriseSunset
The solar day over the course of the year 2017. From bottom to top, the black lines are the previous solar midnight, sunrise, solar noon, sunset, and the next solar midnight. The day, twilights (civil, nautical, and astronomical), and night are indicated by the color bands from yellow to gray. The transitions to and from daylight saving time are indicated by the 'DST' labels.

Humidity

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.

Opp experiences extreme seasonal variation in the perceived humidity.

The muggier period of the year lasts for 5.3 months, from May 6 to October 14, during which time the comfort level is muggy, oppressive, or miserable at least 25% of the time. The muggiest day of the year is July 24, with muggy conditions 97% of the time.

The least muggy day of the year is January 31, with muggy conditions 1% of the time.

Humidity Comfort Levels

Humidity Comfort Levels in OppmuggyJanFebMarAprMayJunJulAugSepOctNovDec0%10%20%30%40%50%60%70%80%90%100%Jan 311%Jan 311%97%Jul 2497%Jul 24May 625%May 625%Oct 1425%Oct 1425%oppressiveoppressivedrydryhumidhumidmiserablemiserablecomfortablecomfortable
The percentage of time spent at various humidity comfort levels, categorized by dew point: dry < 55°F < comfortable < 60°F < humid < 65°F < muggy < 70°F < oppressive < 75°F < miserable.

Wind

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 Opp experiences mild seasonal variation over the course of the year.

The windier part of the year lasts for 7.6 months, from September 26 to May 15, with average wind speeds of more than 4.6 miles per hour. The windiest day of the year is February 25, with an average hourly wind speed of 5.6 miles per hour.

The calmer time of year lasts for 4.4 months, from May 15 to September 26. The calmest day of the year is August 8, with an average hourly wind speed of 3.5 miles per hour.

Average Wind Speed

The average of mean hourly wind speeds (dark gray line), with 25th to 75th and 10th to 90th percentile bands.

The predominant average hourly wind direction in Opp varies throughout the year.

The wind is most often from the south for 4.0 months, from March 1 to June 30, with a peak percentage of 39% on May 4. The wind is most often from the east for 2.4 months, from August 15 to October 27, with a peak percentage of 43% on September 15. The wind is most often from the north for 4.2 months, from October 27 to March 1, with a peak percentage of 37% on January 1.

Wind Direction

Wind Direction in OppNSWENJanFebMarAprMayJunJulAugSepOctNovDec0%100%20%80%40%60%60%40%80%20%100%0%westsoutheastnorth
The percentage of hours in which the mean wind direction is from each of the four cardinal wind directions (north, east, south, and west), excluding hours in which the mean wind speed is less than 1 mph. The lightly tinted areas at the boundaries are the percentage of hours spent in the implied intermediate directions (northeast, southeast, southwest, and northwest).

Water Temperature

Opp is located near a large body of water (e.g., ocean, sea, or large lake). This section reports on the wide-area average surface temperature of that water.

The average water temperature experiences significant seasonal variation over the course of the year.

The time of year with warmer water lasts for 3.9 months, from June 8 to October 5, with an average temperature above 80°F. The day of the year with the warmest water is August 14, with an average temperature of 85°F.

The time of year with cooler water lasts for 3.6 months, from December 18 to April 6, with an average temperature below 67°F. The day of the year with the coolest water is February 18, with an average temperature of 63°F.

Average Water Temperature

The daily average water temperature (purple line), with 25th to 75th and 10th to 90th percentile bands.

Best Time of Year to Visit

To characterize how pleasant the weather is in Opp 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 Opp for general outdoor tourist activities are from mid April to late May and from mid September to late October, with a peak score in the second week of October.

Tourism Score

Tourism Score in Oppbest timebest timeJanFebMarAprMayJunJulAugSepOctNovDec02468106.46.42.52.56.36.34.24.2 precipitationprecipitationcloudscloudstemperaturetemperaturetourism score
The tourism score (filled area), and its constituents: the temperature score (red line), the cloud cover score (blue line), and the precipitation score (green line).

The beach/pool score favors clear, rainless days with perceived temperatures between 75°F and 90°F. Based on this score, the best times of year to visit Opp for hot-weather activities are from mid May to early July and from early August to late September, with a peak score in the first week of September.

Beach/Pool Score

Beach/Pool Score in Oppbest timebest timeJanFebMarAprMayJunJulAugSepOctNovDec02468106.06.00.50.55.95.95.25.2 precipitationprecipitationcloudscloudstemperaturetemperaturebeach/pool score
The beach/pool score (filled area), and its constituents: the temperature score (red line), the cloud cover score (blue line), and the precipitation score (green line).

Methodology

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.

Growing Season

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 Opp typically lasts for 9.5 months (289 days), from around February 21 to around December 6, rarely starting before January 30 or after March 19, and rarely ending before November 11 or after December 30.

Time Spent in Various Temperature Bands and the Growing Season

Time Spent in Various Temperature Bands and the Growing Season in Oppgrowing seasonJanFebMarAprMayJunJulAugSepOctNovDec0%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%50%Feb 2150%Feb 2150%Dec 650%Dec 690%Mar 1990%Mar 1990%Nov 1190%Nov 1110%Jan 3010%Jan 3010%Dec 3010%Dec 302%Jan 162%Jan 16Jul 15100%Jul 15100%coldcoolcomfortablewarmhotvery coldsweltering
The percentage of time spent in various temperature bands: 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 black line is the percentage chance that a given day is within the growing season.

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.

Based on growing degree days alone, the first spring blooms in Opp should appear around January 19, only rarely appearing before January 11 or after February 3.

Growing Degree Days

The average growing degree days accumulated over the course of the year, with 25th to 75th and 10th to 90th percentile bands.

Solar Energy

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 3.0 months, from April 5 to July 7, with an average daily incident shortwave energy per square meter above 6.0 kWh. The brightest day of the year is May 19, with an average of 6.7 kWh.

The darker period of the year lasts for 2.5 months, from November 15 to February 2, with an average daily incident shortwave energy per square meter below 3.7 kWh. The darkest day of the year is December 23, with an average of 2.9 kWh.

Average Daily Incident Shortwave Solar Energy

Average Daily Incident Shortwave Solar Energy in OppbrightdarkdarkJanFebMarAprMayJunJulAugSepOctNovDec0 kWh1 kWh2 kWh3 kWh4 kWh5 kWh6 kWh7 kWh8 kWh9 kWhMay 196.7 kWhMay 196.7 kWhDec 232.9 kWhDec 232.9 kWhApr 56.0 kWhApr 56.0 kWhJul 76.0 kWhJul 76.0 kWhFeb 23.7 kWhFeb 23.7 kWh
The average daily shortwave solar energy reaching the ground per square meter (orange line), with 25th to 75th and 10th to 90th percentile bands.

Topography

For the purposes of this report, the geographical coordinates of Opp are 31.283 deg latitude, -86.256 deg longitude, and 289 ft elevation.

The topography within 2 miles of Opp contains only modest variations in elevation, with a maximum elevation change of 131 feet and an average elevation above sea level of 293 feet. Within 10 miles also contains only modest variations in elevation (305 feet). Within 50 miles contains only modest variations in elevation (659 feet).

The area within 2 miles of Opp is covered by cropland (56%), artificial surfaces (21%), and trees (21%), within 10 miles by cropland (50%) and trees (46%), and within 50 miles by trees (71%) and cropland (23%).

Data Sources

This report illustrates the typical weather in Opp, 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 4 weather stations near enough to contribute to our estimation of the temperature and dew point in Opp.

For each station, the records are corrected for the elevation difference between that station and Opp 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 Opp is computed as the weighted average of the individual contributions from each station, with weights proportional to the inverse of the distance between Opp and a given station.

The stations contributing to this reconstruction are: Andalusia, Andalusia-Opp Municipal Airport (63%, 13 kilometers, west); Florala Municipal Airport (22%, 27 kilometers, south); Fort Rucker, Lowe Army Heliport (9%, 49 kilometers, east); and Troy Municipal Airport (6%, 68 kilometers, north).

Other Data

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 .

Maps are © Esri, with data from National Geographic, Esri, DeLorme, NAVTEQ, UNEP-WCMC, USGS, NASA, ESA, METI, NRCAN, GEBCO, NOAA, and iPC.

Disclaimer

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.