Category: Cold spells affecting Canada

Download data: JSON

Event type: Cold spell

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

• Canada

Duration: 3 days

Time span: July 23 2025 to July 25 2025

Statistics over entire affected area:

• Mean temperature anomaly: -2.3 °C
• Mean temperature: 4.0 °C
• Minimum temperature anomaly: -3.3 °C
• Minimum temperature: 2.0 °C

Event center: 60.5°N 303.5°E

Area affected: 58937 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-23_to_2025-Jul-25_303.5_60.5

Download data: JSON

Event type: Cold spell

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

• Canada

Duration: 10 days

Time span: July 20 2025 to July 29 2025

Statistics over entire affected area:

• Mean temperature anomaly: -6.5 °C
• Mean temperature: 7.8 °C
• Minimum temperature anomaly: -9.2 °C
• Minimum temperature: 3.6 °C

Event center: 65.0°N 258.5°E

Area affected: 660150 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-20_to_2025-Jul-29_258.5_65.0

Download data: JSON

Event type: Cold spell

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

• Canada

Duration: 11 days

Time span: July 19 2025 to July 29 2025

Statistics over entire affected area:

• Mean temperature anomaly: -4.3 °C
• Mean temperature: 3.1 °C
• Minimum temperature anomaly: -7.8 °C
• Minimum temperature: 0.3 °C

Event center: 70.5°N 256.0°E

Area affected: 61412 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-19_to_2025-Jul-29_256.0_70.5

Download data: JSON

Event type: Cold spell

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

• Canada

Duration: 11 days

Time span: July 17 2025 to July 27 2025

Statistics over entire affected area:

• Mean temperature anomaly: -2.2 °C
• Mean temperature: 1.3 °C
• Minimum temperature anomaly: -3.8 °C
• Minimum temperature: -0.9 °C

Event center: 62.5°N 297.5°E

Area affected: 59578 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-17_to_2025-Jul-27_297.5_62.5

Download data: JSON

Event type: Cold spell

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

• Canada

Duration: 5 days

Time span: July 15 2025 to July 19 2025

Statistics over entire affected area:

• Mean temperature anomaly: -5.3 °C
• Mean temperature: 6.6 °C
• Minimum temperature anomaly: -6.7 °C
• Minimum temperature: 4.4 °C

Event center: 58.0°N 284.0°E

Area affected: 63233 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-19_284.0_58.0

Download data: JSON

Event type: Cold spell

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

• Canada

Duration: 6 days

Time span: July 10 2025 to July 15 2025

Statistics over entire affected area:

• Mean temperature anomaly: -4.2 °C
• Mean temperature: 2.2 °C
• Minimum temperature anomaly: -6.9 °C
• Minimum temperature: 0.2 °C

Event center: 72.0°N 264.0°E

Area affected: 69891 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-10_to_2025-Jul-15_264.0_72.0

Download data: JSON

Event type: Cold spell

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

• Canada

Duration: 8 days

Time span: July 08 2025 to July 15 2025

Statistics over entire affected area:

• Mean temperature anomaly: -6.0 °C
• Mean temperature: 2.2 °C
• Minimum temperature anomaly: -9.7 °C
• Minimum temperature: -0.7 °C

Event center: 69.5°N 244.5°E

Area affected: 358277 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-08_to_2025-Jul-15_244.5_69.5