Winter Weather in Cochrane Chile

Daily high temperatures are around 44°F, rarely falling below 33°F or exceeding 53°F. The lowest daily average high temperature is 42°F on July 4.

Daily low temperatures are around 31°F, rarely falling below 17°F or exceeding 41°F. The lowest daily average low temperature is 29°F on July 15.

For reference, on February 17, the hottest day of the year, temperatures in Cochrane typically range from 48°F to 63°F, while on July 15, the coldest day of the year, they range from 29°F to 42°F.

The figure below shows you a compact characterization of the hourly average winter temperatures. 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.

Evanton, United Kingdom (8,236 miles away) is the far-away foreign place with temperatures most similar to Cochrane (view comparison).

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The winter in Cochrane experiences gradually decreasing cloud cover, with the percentage of time that the sky is overcast or mostly cloudy decreasing from 57% to 51%.

The clearest day of the winter is August 31, with clear, mostly clear, or partly cloudy conditions 49% of the time.

For reference, on May 19, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 59%, while on November 10, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 56%.

A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. In Cochrane, the chance of a wet day over the course of the winter is rapidly decreasing, starting the season at 23% and ending it at 17%.

For reference, the year's highest daily chance of a wet day is 24% on May 28, and its lowest chance is 12% on September 24.

Over the course of the winter in Cochrane, the chance of a day with only rain decreases from 21% to 16%, the chance of a day with mixed snow and rain remains an essentially constant 2% throughout, and the chance of a day with only snow remains an essentially constant 1% throughout.

Rainfall

To show variation within the season and not just the monthly totals, we show the rainfall accumulated over a sliding 31-day period centered around each day.

The average sliding 31-day rainfall during the winter in Cochrane is decreasing, starting the season at 1.5 inches, when it rarely exceeds 2.9 inches or falls below 0.3 inches, and ending the season at 0.8 inches, when it rarely exceeds 1.7 inches or falls below 0.2 inches.

Over the course of the winter in Cochrane, the length of the day is very rapidly increasing. From the start to the end of the season, the length of the day increases by 2 hours, 15 minutes, implying an average daily increase of 1 minute, 29 seconds, and weekly increase of 10 minutes, 23 seconds.

The shortest day of the winter is June 20, with 8 hours, 28 minutes of daylight and the longest day is August 31, with 10 hours, 57 minutes of daylight.

The latest sunrise of the winter in Cochrane is 8:38 AM on June 26 and the earliest sunrise is 1 hour, 16 minutes earlier at 7:22 AM on August 31.

The earliest sunset is 5:05 PM on June 14 and the latest sunset is 1 hour, 14 minutes later at 6:19 PM on August 31.

Daylight saving time is observed in Cochrane during 2024, but it neither starts nor ends during the winter, so the entire season is in daylight saving time.

For reference, on December 21, the longest day of the year, the Sun rises at 5:50 AM and sets 15 hours, 56 minutes later, at 9:46 PM, while on June 20, the shortest day of the year, it rises at 8:37 AM and sets 8 hours, 28 minutes later, at 5:06 PM.

The figure below presents a compact representation of the sun's elevation (the angle of the sun above the horizon) and azimuth (its compass bearing) for every hour of every day in the reporting period. The horizontal axis is the day of the year and the vertical axis is the hour of the day. For a given day and hour of that day, the background color indicates the azimuth of the sun at that moment. The black isolines are contours of constant solar elevation.

The figure below presents a compact representation of key lunar data for the winter of 2024. 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.

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 Cochrane is essentially constant during the winter, remaining around 0% throughout.

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 Cochrane is increasing during the winter, increasing from 6.5 miles per hour to 7.8 miles per hour over the course of the season.

For reference, on December 29, the windiest day of the year, the daily average wind speed is 10.3 miles per hour, while on June 4, the calmest day of the year, the daily average wind speed is 6.5 miles per hour.

The lowest daily average wind speed during the winter is 6.5 miles per hour on June 5.

The hourly average wind direction in Cochrane throughout the winter is predominantly from the west, with a peak proportion of 54% on August 31.

Cochrane 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 surface water temperature in Cochrane is gradually decreasing during the winter, falling by 3°F, from 50°F to 47°F, over the course of the season.

The lowest average surface water temperature during the winter is 47°F on August 16.

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 Cochrane typically lasts for 4.9 months (148 days), from around October 29 to around March 25, rarely starting before September 12 or after December 14, and rarely ending before February 29 or after April 22.

The winter in Cochrane is very likely fully outside of the growing season, with the chance that a given day is in the growing season gradually increasing from 0% to 5% over the course of the 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.

The average accumulated growing degree days in Cochrane are rapidly decreasing during the winter, decreasing by 724°F, from 727°F to 3°F, over the course of the season.

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 Cochrane is rapidly increasing during the winter, rising by 1.6 kWh, from 1.2 kWh to 2.8 kWh, over the course of the season.

The lowest average daily incident shortwave solar energy during the winter is 1.1 kWh on June 17.

For the purposes of this report, the geographical coordinates of Cochrane are -47.256 deg latitude, -72.570 deg longitude, and 472 ft elevation.

The topography within 2 miles of Cochrane contains very significant variations in elevation, with a maximum elevation change of 1,375 feet and an average elevation above sea level of 777 feet. Within 10 miles contains very significant variations in elevation (6,063 feet). Within 50 miles also contains extreme variations in elevation (11,955 feet).

The area within 2 miles of Cochrane is covered by trees (53%) and shrubs (42%), within 10 miles by trees (47%) and shrubs (33%), and within 50 miles by snow and glaciers (26%) and shrubs (23%).