Category: Extremes affecting Mongolia

Cold spell occuring from August 11 2025 to August 13 2025 at 48.5°N 113.0°E

Download data: JSON

Event type: Cold spell

Countries affected (identified with ArcGIS Online; provided only for geographical reference):

  • China
  • Mongolia
  • Russian Federation

Duration: 3 days

Time span: August 11 2025 to August 13 2025

Statistics over entire affected area:

  • Mean temperature anomaly: -4.8 °C
  • Mean temperature: 12.3 °C
  • Minimum temperature anomaly: -6.9 °C
  • Minimum temperature: 7.2 °C

Event center: 48.5°N 113.0°E

Area affected: 129541 km$^2$


Fig. 1: Map of most extreme temperature anomalies (standardized) experienced during the event. The purple star indicates the center of the extreme event. Green hatching illustrates all areas under the effect of extremes at some time during the event.



Fig. 2: Evolution of temperature at the center of the event. The climatological percentile distribution is illustrated with color shadings.



Fig. 3: Maps illustrating the evolution of standardized temperature anomalies during the event.

Event ID: Cold_spell_2025-Aug-11_to_2025-Aug-13_113.0_48.5

Cold spell occuring from July 15 2025 to July 27 2025 at 63.0°N 62.0°E

Download data: JSON

Event type: Cold spell

Countries affected (identified with ArcGIS Online; provided only for geographical reference):

  • Mongolia
  • Russian Federation

Duration: 13 days

Time span: July 15 2025 to July 27 2025

Statistics over entire affected area:

  • Mean temperature anomaly: -7.0 °C
  • Mean temperature: 10.4 °C
  • Minimum temperature anomaly: -11.6 °C
  • Minimum temperature: 1.5 °C

Event center: 63.0°N 62.0°E

Area affected: 3431784 km$^2$


Fig. 1: Map of most extreme temperature anomalies (standardized) experienced during the event. The purple star indicates the center of the extreme event. Green hatching illustrates all areas under the effect of extremes at some time during the event.



Fig. 2: Evolution of temperature at the center of the event. The climatological percentile distribution is illustrated with color shadings.



Fig. 3: Maps illustrating the evolution of standardized temperature anomalies during the event.

Event ID: Cold_spell_2025-Jul-15_to_2025-Jul-27_62.0_63.0

Cold spell occuring from June 16 2025 to June 20 2025 at 51.0°N 119.0°E

Download data: JSON

Event type: Cold spell

Countries affected (identified with ArcGIS Online; provided only for geographical reference):

  • China
  • Mongolia
  • Russian Federation

Duration: 5 days

Time span: June 16 2025 to June 20 2025

Statistics over entire affected area:

  • Mean temperature anomaly: -5.4 °C
  • Mean temperature: 12.5 °C
  • Minimum temperature anomaly: -8.3 °C
  • Minimum temperature: 8.8 °C

Event center: 51.0°N 119.0°E

Area affected: 101453 km$^2$


Fig. 1: Map of most extreme temperature anomalies (standardized) experienced during the event. The purple star indicates the center of the extreme event. Green hatching illustrates all areas under the effect of extremes at some time during the event.



Fig. 2: Evolution of temperature at the center of the event. The climatological percentile distribution is illustrated with color shadings.



Fig. 3: Maps illustrating the evolution of standardized temperature anomalies during the event.

Event ID: Cold_spell_2025-Jun-16_to_2025-Jun-20_119.0_51.0

Heat wave occuring from June 11 2025 to June 14 2025 at 49.0°N 87.0°E

Download data: JSON

Event type: Heat wave

Countries affected (identified with ArcGIS Online; provided only for geographical reference):

  • China
  • Kazakhstan
  • Mongolia
  • Russian Federation

Duration: 4 days

Time span: June 11 2025 to June 14 2025

Statistics over entire affected area:

  • Mean temperature anomaly: 5.6 °C
  • Mean temperature: 15.3 °C
  • Maximum temperature anomaly: 8.2 °C
  • Maximum temperature: 21.2 °C

Event center: 49.0°N 87.0°E

Area affected: 50471 km$^2$


Fig. 1: Map of most extreme temperature anomalies (standardized) experienced during the event. The purple star indicates the center of the extreme event. Green hatching illustrates all areas under the effect of extremes at some time during the event.



Fig. 2: Evolution of temperature at the center of the event. The climatological percentile distribution is illustrated with color shadings.



Fig. 3: Maps illustrating the evolution of standardized temperature anomalies during the event.

Event ID: Heat_wave_2025-Jun-11_to_2025-Jun-14_87.0_49.0

Cold spell occuring from May 23 2025 to June 01 2025 at 51.0°N 87.0°E

Download data: JSON

Event type: Cold spell

Countries affected (identified with ArcGIS Online; provided only for geographical reference):

  • China
  • Kazakhstan
  • Mongolia
  • Russian Federation

Duration: 10 days

Time span: May 23 2025 to June 01 2025

Statistics over entire affected area:

  • Mean temperature anomaly: -7.8 °C
  • Mean temperature: 1.9 °C
  • Minimum temperature anomaly: -14.0 °C
  • Minimum temperature: -9.5 °C

Event center: 51.0°N 87.0°E

Area affected: 2793049 km$^2$


Fig. 1: Map of most extreme temperature anomalies (standardized) experienced during the event. The purple star indicates the center of the extreme event. Green hatching illustrates all areas under the effect of extremes at some time during the event.



Fig. 2: Evolution of temperature at the center of the event. The climatological percentile distribution is illustrated with color shadings.



Fig. 3: Maps illustrating the evolution of standardized temperature anomalies during the event.

Event ID: Cold_spell_2025-May-23_to_2025-Jun-01_87.0_51.0

Heat wave occuring from May 16 2025 to June 23 2025 at 62.5°N 164.5°E

Download data: JSON

Event type: Heat wave

Countries affected (identified with ArcGIS Online; provided only for geographical reference):

  • China
  • Mongolia
  • Russian Federation

Duration: 39 days

Time span: May 16 2025 to June 23 2025

Statistics over entire affected area:

  • Mean temperature anomaly: 7.9 °C
  • Mean temperature: 14.3 °C
  • Maximum temperature anomaly: 17.9 °C
  • Maximum temperature: 27.8 °C

Event center: 62.5°N 164.5°E

Area affected: 5092485 km$^2$


Fig. 1: Map of most extreme temperature anomalies (standardized) experienced during the event. The purple star indicates the center of the extreme event. Green hatching illustrates all areas under the effect of extremes at some time during the event.



Fig. 2: Evolution of temperature at the center of the event. The climatological percentile distribution is illustrated with color shadings.



Fig. 3: Maps illustrating the evolution of standardized temperature anomalies during the event.

Event ID: Heat_wave_2025-May-16_to_2025-Jun-23_164.5_62.5

Cold spell occuring from May 15 2025 to May 24 2025 at 53.5°N 126.5°E

Download data: JSON

Event type: Cold spell

Countries affected (identified with ArcGIS Online; provided only for geographical reference):

  • China
  • Mongolia
  • Russian Federation

Duration: 10 days

Time span: May 15 2025 to May 24 2025

Statistics over entire affected area:

  • Mean temperature anomaly: -6.4 °C
  • Mean temperature: 5.6 °C
  • Minimum temperature anomaly: -11.9 °C
  • Minimum temperature: -1.2 °C

Event center: 53.5°N 126.5°E

Area affected: 885049 km$^2$


Fig. 1: Map of most extreme temperature anomalies (standardized) experienced during the event. The purple star indicates the center of the extreme event. Green hatching illustrates all areas under the effect of extremes at some time during the event.



Fig. 2: Evolution of temperature at the center of the event. The climatological percentile distribution is illustrated with color shadings.



Fig. 3: Maps illustrating the evolution of standardized temperature anomalies during the event.

Event ID: Cold_spell_2025-May-15_to_2025-May-24_126.5_53.5

Cold spell occuring from May 15 2025 to May 17 2025 at 46.5°N 109.0°E

Download data: JSON

Event type: Cold spell

Countries affected (identified with ArcGIS Online; provided only for geographical reference):

  • Mongolia

Duration: 3 days

Time span: May 15 2025 to May 17 2025

Statistics over entire affected area:

  • Mean temperature anomaly: -8.0 °C
  • Mean temperature: 5.1 °C
  • Minimum temperature anomaly: -10.8 °C
  • Minimum temperature: -0.1 °C

Event center: 46.5°N 109.0°E

Area affected: 100739 km$^2$


Fig. 1: Map of most extreme temperature anomalies (standardized) experienced during the event. The purple star indicates the center of the extreme event. Green hatching illustrates all areas under the effect of extremes at some time during the event.



Fig. 2: Evolution of temperature at the center of the event. The climatological percentile distribution is illustrated with color shadings.



Fig. 3: Maps illustrating the evolution of standardized temperature anomalies during the event.

Event ID: Cold_spell_2025-May-15_to_2025-May-17_109.0_46.5

Heat wave occuring from May 09 2025 to May 12 2025 at 52.0°N 106.0°E

Download data: JSON

Event type: Heat wave

Countries affected (identified with ArcGIS Online; provided only for geographical reference):

  • Mongolia
  • Russian Federation

Duration: 4 days

Time span: May 09 2025 to May 12 2025

Statistics over entire affected area:

  • Mean temperature anomaly: 7.5 °C
  • Mean temperature: 13.1 °C
  • Maximum temperature anomaly: 11.9 °C
  • Maximum temperature: 21.2 °C

Event center: 52.0°N 106.0°E

Area affected: 406185 km$^2$


Fig. 1: Map of most extreme temperature anomalies (standardized) experienced during the event. The purple star indicates the center of the extreme event. Green hatching illustrates all areas under the effect of extremes at some time during the event.



Fig. 2: Evolution of temperature at the center of the event. The climatological percentile distribution is illustrated with color shadings.



Fig. 3: Maps illustrating the evolution of standardized temperature anomalies during the event.

Event ID: Heat_wave_2025-May-09_to_2025-May-12_106.0_52.0

Cold spell occuring from March 26 2025 to March 29 2025 at 46.5°N 113.5°E

Download data: JSON

Event type: Cold spell

Countries affected (identified with ArcGIS Online; provided only for geographical reference):

  • Mongolia

Duration: 4 days

Time span: March 26 2025 to March 29 2025

Statistics over entire affected area:

  • Mean temperature anomaly: -9.5 °C
  • Mean temperature: -10.8 °C
  • Minimum temperature anomaly: -12.7 °C
  • Minimum temperature: -14.4 °C

Event center: 46.5°N 113.5°E

Area affected: 63418 km$^2$


Fig. 1: Map of most extreme temperature anomalies (standardized) experienced during the event. The purple star indicates the center of the extreme event. Green hatching illustrates all areas under the effect of extremes at some time during the event.



Fig. 2: Evolution of temperature at the center of the event. The climatological percentile distribution is illustrated with color shadings.



Fig. 3: Maps illustrating the evolution of standardized temperature anomalies during the event.

Event ID: Cold_spell_2025-Mar-26_to_2025-Mar-29_113.5_46.5