July Weather in Altan Mongolia

Daily high temperatures are around 72°F, rarely falling below 61°F or exceeding 82°F. The highest daily average high temperature is 72°F on July 14.

Daily low temperatures are around 48°F, rarely falling below 40°F or exceeding 57°F. The highest daily average low temperature is 49°F on July 22.

For reference, on July 14, the hottest day of the year, temperatures in Altan typically range from 49°F to 72°F, while on January 19, the coldest day of the year, they range from -12°F to 8°F.

The figure below shows you a compact characterization of the hourly average temperatures for the quarter of the year centered on July. 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.

Watson Lake, Yukon, Canada (4,563 miles away); High Level, Alberta, Canada (4,842 miles); and Flin Flon, Manitoba, Canada (5,261 miles) are the far-away foreign places with temperatures most similar to Altan (view comparison).

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The month of July in Altan experiences gradually decreasing cloud cover, with the percentage of time that the sky is overcast or mostly cloudy decreasing from 43% to 37%.

The clearest day of the month is July 31, with clear, mostly clear, or partly cloudy conditions 63% of the time.

For reference, on April 14, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 45%, while on September 18, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 66%.

A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. In Altan, the chance of a wet day over the course of July is essentially constant, remaining around 24% throughout.

For reference, the year's highest daily chance of a wet day is 26% on July 26, and its lowest chance is 0% on January 10.

Rainfall

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

The average sliding 31-day rainfall during July in Altan is essentially constant, remaining about 1.2 inches throughout, and rarely exceeding 2.2 inches or falling below 0.3 inches.

The highest average 31-day accumulation is 1.3 inches on July 23.

Over the course of July in Altan, the length of the day is decreasing. From the start to the end of the month, the length of the day decreases by 56 minutes, implying an average daily decrease of 1 minute, 52 seconds, and weekly decrease of 13 minutes, 3 seconds.

The shortest day of the month is July 31, with 15 hours, 4 minutes of daylight and the longest day is July 1, with 16 hours, 0 minutes of daylight.

The earliest sunrise of the month in Altan is 4:40 AM on July 1 and the latest sunrise is 30 minutes later at 5:11 AM on July 31.

The latest sunset is 8:40 PM on July 1 and the earliest sunset is 26 minutes earlier at 8:15 PM on July 31.

Daylight saving time is not observed in Altan during 2026.

For reference, on June 21, the longest day of the year, the Sun rises at 4:36 AM and sets 16 hours, 4 minutes later, at 8:40 PM, while on December 21, the shortest day of the year, it rises at 8:24 AM and sets 8 hours, 21 minutes later, at 4:45 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 July 2026. 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 Altan is essentially constant during July, 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 Altan is essentially constant during July, remaining within 0.3 miles per hour of 8.1 miles per hour throughout.

For reference, on April 30, the windiest day of the year, the daily average wind speed is 10.4 miles per hour, while on January 28, the calmest day of the year, the daily average wind speed is 7.7 miles per hour.

The hourly average wind direction in Altan throughout July is predominantly from the north, with a peak proportion of 40% on July 1.

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 Altan typically lasts for 2.8 months (86 days), from around June 6 to around August 31, rarely starting before May 20 or after June 29, and rarely ending before August 10 or after September 19.

The month of July in Altan is very likely fully within the growing season, with the chance that a given day is in the growing season reaching a high of 99% on July 22.

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 Altan are increasing during July, increasing by 343°F, from 399°F to 742°F, over the course of the month.

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 Altan is gradually decreasing during July, falling by 0.6 kWh, from 7.2 kWh to 6.6 kWh, over the course of the month.

For the purposes of this report, the geographical coordinates of Altan are 48.117 deg latitude, 95.717 deg longitude, and 6,276 ft elevation.

The topography within 2 miles of Altan contains very significant variations in elevation, with a maximum elevation change of 1,089 feet and an average elevation above sea level of 6,312 feet. Within 10 miles contains very significant variations in elevation (2,746 feet). Within 50 miles contains large variations in elevation (5,217 feet).

The area within 2 miles of Altan is covered by bare soil (100%), within 10 miles by bare soil (99%), and within 50 miles by bare soil (78%) and sparse vegetation (19%).