Spring Weather in Udachny Russia

Daily high temperatures increase by 54°F, from -3°F to 51°F, rarely falling below -20°F or exceeding 65°F.

Daily low temperatures increase by 57°F, from -18°F to 38°F, rarely falling below -37°F or exceeding 49°F.

For reference, on July 16, the hottest day of the year, temperatures in Udachny typically range from 54°F to 69°F, while on January 3, the coldest day of the year, they range from -28°F to -16°F.

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

Yellowknife, Canada (3,229 miles away) and Rankin Inlet, Canada (3,426 miles) are the far-away foreign places with temperatures most similar to Udachny (view comparison).

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The spring in Udachny experiences rapidly decreasing cloud cover, with the percentage of time that the sky is overcast or mostly cloudy decreasing from 76% to 64%. The highest chance of overcast or mostly cloudy conditions is 81% on March 19.

The clearest day of the spring is May 31, with clear, mostly clear, or partly cloudy conditions 36% of the time.

For reference, on October 23, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 88%, while on July 17, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 51%.

A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. In Udachny, the chance of a wet day over the course of the spring is very rapidly increasing, starting the season at 1% and ending it at 31%.

For reference, the year's highest daily chance of a wet day is 36% on June 17, and its lowest chance is 0% on February 7.

Over the course of the spring in Udachny, the chance of a day with only rain increases from 0% to 29%, the chance of a day with mixed snow and rain increases from 0% to 2%, and the chance of a day with only snow remains an essentially constant 4% 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 spring in Udachny is very rapidly increasing, starting the season at 0.0 inches, when it rarely exceeds 0.0 inches or falls below -0.0 inches, and ending the season at 2.4 inches, when it rarely exceeds 3.6 inches or falls below 1.2 inches.

Snowfall

As with rainfall, we consider the snowfall accumulated over a sliding 31-day period centered around each day.

The average sliding 31-day snowfall during the spring in Udachny is gradually increasing, starting the season at 0.5 inches, when it rarely exceeds 1.3 inches, and ending the season at 1.2 inches, when it rarely exceeds 3.4 inches.

The highest average 31-day accumulation is 3.9 inches on April 27.

Due to its extreme latitude, Udachny experiences polar day (also known as the midnight Sun) during the summer. The precise start and end dates of polar day and night vary from year to year and depend on the precise location and elevation of the observer, and the local topography.

Neither polar day nor polar night occur during the spring.

Over the course of the spring in Udachny, 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 11 hours, 59 minutes, implying an average daily increase of 7 minutes, 54 seconds, and weekly increase of 55 minutes, 18 seconds.

The shortest day of the spring is March 1, with 9 hours, 59 minutes of daylight and the longest day is May 31, with 21 hours, 58 minutes of daylight.

The latest sunrise of the spring in Udachny is 8:44 AM on March 1 and the earliest sunrise is 6 hours, 12 minutes earlier at 2:31 AM on May 31.

The earliest sunset is 6:42 PM on March 1 and the latest sunset is 5 hours, 47 minutes later at 12:29 AM on May 31.

Daylight saving time is not observed in Udachny during 2024.

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 spring 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 Udachny is essentially constant during the spring, remaining around 0% throughout.

For reference, on July 15, the muggiest day of the year, there are muggy conditions 0% of the time, while on January 1, the least muggy day of the year, there are muggy conditions 0% of the time.

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 Udachny is decreasing during the spring, decreasing from 6.9 miles per hour to 5.1 miles per hour over the course of the season.

For reference, on April 5, the windiest day of the year, the daily average wind speed is 7.8 miles per hour, while on July 23, the calmest day of the year, the daily average wind speed is 3.6 miles per hour.

The highest daily average wind speed during the spring is 7.8 miles per hour on April 5.

The wind direction in Udachny during the spring is predominantly out of the west from March 1 to April 27 and the north from April 27 to May 31.

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 Udachny typically lasts for 3.2 months (100 days), from around May 30 to around September 7, rarely starting before May 14 or after June 14, and rarely ending before August 22 or after September 22.

During the spring in Udachny, the chance that a given day is within the growing season is very rapidly increasing rising from 0% to 54% 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 Udachny are essentially constant during the spring, remaining within 13°F of 13°F throughout.

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 Udachny is very rapidly increasing during the spring, rising by 4.0 kWh, from 1.2 kWh to 5.2 kWh, over the course of the season.

For the purposes of this report, the geographical coordinates of Udachny are 66.430 deg latitude, 112.402 deg longitude, and 919 ft elevation.

The topography within 2 miles of Udachny contains significant variations in elevation, with a maximum elevation change of 545 feet and an average elevation above sea level of 1,074 feet. Within 10 miles also contains significant variations in elevation (801 feet). Within 50 miles contains significant variations in elevation (1,775 feet).

The area within 2 miles of Udachny is covered by trees (36%), bare soil (30%), and grassland (24%), within 10 miles by trees (59%) and grassland (23%), and within 50 miles by trees (74%) and grassland (14%).