Climate and monthly weather forecast
Arvaikheer, Mongolia

According to the Köppen climate classification, Arvaikheer, a city in Mongolia, is dominated by a Mid-latitude steppe climate, also known as BSk. This geographical location exhibits climatic conditions characterized by an array of severe temperatures and precipitation changes throughout the year.

Throughout the year, the temperature in Arvaikheer exhibits a broad spectrum, damping from the chilling lows of -20°C (-4°F) during January to reaching the pleasant highs of 21.4°C (70.5°F) in July. Rainfall varies significantly from one month to another, hinting at the fluctuations observed in this continental climate. January and February account for minimal precipitation, averaging around 1mm (0.04") and 1mm (0.04") respectively, while July with its peak rainfall of 60mm (2.36") represents the city’s humid summer.

A distinct pattern can be pointed out in the number of rainfall days. Starting from a mere 0.2 days in January, it escalates quite significantly to reach a peak of 11 days in July, only to descend back to 0.3 days by December. The city also possesses varied daylight hours, hovering from a low of 8.7 hours in December to a high of 15.7 hours in June. The weather parameters of Arvaikheer, therefore, highlight a region with extreme weather conditions due to its mid-latitude steppe climate.

The optimal timeframe for visiting Arvaikheer lies from May to September, as the weather during these months is relatively warm and manageable. With the temperature ranging from a high of 16.4°C (61.5°F) to 21.4°C (70.5°F) and a low of 2.6°C (36.7°F) to 10°C (50°F), this period allows for comfortable exploration. More so, the increase in daylight hours, reaching its peak of 15.7 hours during June, promises longer days and more time for outdoor activities.

Travelling to Arvaikheer from November to March is less advisable due to the harsh winter conditions. During these months, the city experiences its lowest temperatures, dropping from -1°C (30.2°F) to -6.7°C (19.9°F) in the day and even harsher conditions at night between -12.6°C (9.3°F) to -20°C (-4°F). Along with fewer daylight hours, reaching a low of 8.7 hours in December, the freezing environment and short days make travel less enjoyable.

Spring in Arvaikheer, from March to May, is a period of rising temperatures and increasing rainfall. The city observes a temperature increase, from the mere 0.1°C (32.2°F) in March to a more comfortable 16.4°C (61.5°F) by May. While rainfall experiences a similar increase, starting at 4mm (0.16") in March and escalating to 15mm (0.59") by May, signalling the arrival of the wetter months to follow.

Summers, from June to August, bring warmer temperatures between 20.1°C (68.2°F) and 21.4°C (70.5°F), while the nighttime temperature ranges between 7.7°C (45.9°F) to 10°C (50°F). Simultaneously, rainfall is at its peak for the year, reaching a high of 60mm (2.36") in July. With daylight extending up to 15.7 hours per day during this season, summer is the most vibrant season in Arvaikheer.

Autumn, from September to November, sees a rapid drop in temperature and daylight hours in Arvaikheer. A high temperature of 15.2°C (59.4°F) in September plummets to -1°C (30.2°F) in November while the daylight hours decrease from 12.6 hours to 9.5 hours. Rainfall also diminishes during this season, going down from 20mm (0.79") in September to a scarce 3mm (0.12") in November.

Winter in Arvaikheer lasts from December to February, featuring the harshest weather of the year. With daytime temperatures staggering between -8.5°C (16.7°F) and -6.7°C (19.9°F) and temperatures plunging as low as -20°C (-4°F) at night. Moreover, rainfall is at its most minimal throughout the season, not exceeding 1mm (0.04"). Daylight hours also minimize, reaching a low point of 8.7 hours in December. Winter in Arvaikheer thus presents extreme conditions, throwing a blanket of frost over the city.

During the month of January, Arvaikheer, Mongolia endures its most frigid temperatures, enduring nighttime lows of -20°C (-4°F) and barely reaching a maximum of -8.5°C (16.7°F) during the day. The weather appears to be in a deep freeze throughout the month, often accompanying gusts of icy winds. Weather in January »

A mild variation in the weather pattern is observed as Arvaikheer transitions from January to February. The cold grip of winter persists, but the city witnesses a slightly comforting increase in mean temperatures. No substantial changes in the rain activity occur, making February yet another dry, winter month. Weather in February »

By the time Arvaikheer enters March, the city undergoes a significant leap in temperature, although the weather remains in the negative spectrum during the night. With the precipitation chart noticing a rise, rain activity is more prominent as compared to the previous two months. Weather in March »

The progression from March to April marks the departure from freezing temperatures, with Arvaikheer experiencing considerable positive temperatures. The improvement in weather conditions is noticeable, with the city finally shedding off the chill of winter. Weather in April »

May proves to be noticeably warmer, driving away the last remnants of winter in Arvaikheer. The jump in day and night temperatures can be prominently observed, providing pleasant weather throughout the month. Increased rainfall influences the flourishing of vegetation, turning the city into a green oasis. Weather in May »

Arvaikheer gradually embraces summer as it steps into June, witnessing a rise in temperature to a comfortable 21°C (69.8°F) during the day. This month indeed marks the true onset of the summer season, with its longer, sun-soaked days and mild nights. Weather in June »

July turns out to be the warmest period of the year in Arvaikheer, as the temperature reaches its peak, with nights at a pleasant 10°C (50°F). The increase in heat is accompanied by the highest rainfall of the year, resulting in a humid climate. Weather in July »

August brings a slight dip in temperature compared to July, while maintaining a similar rainfall pattern in Arvaikheer. Although the days remain long, a gradual reduction in daylight hours signifies the slow approach of fall. The decrease in heat doesn't take away the joy of outdoor recreational activities as the weather stays warm and mild throughout the month. Weather in August »

The transition from summertime to autumn is significant as Arvaikheer enters September. The heat starts to recede, paving the way for cooler days and nights. The city witnesses a sharp fall in rainfall after the peak observed in the previous two months. Weather in September »

Cooler winds blow across Arvaikheer in October, bringing down the temperature further. This month proves to be one of the dryer ones, with negligible rainfall expected. The daylight hours continue to shorten, setting the stage for the upcoming cold season. Weather in October »

As November arrives in Arvaikheer, the city begins to brace itself for the frigid winter season. The temperature drops dramatically from the previous month, with the mercury dipping back into the negatives. The rainfall figures dwindle even more, making November an exceedingly dry month. Weather in November »

The arrival of December marks the return of the deep freeze in Arvaikheer with daytime temperatures barely rising above -6.7°C (19.9°F). The bitterly cold conditions become standard, with residents experiencing short days and long, chilly nights. Weather in December »