Category: Cold spells affecting Canada

Download data: JSON

Event type: Cold spell

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

• Canada
• United States

Duration: 18 days

Time span: June 13 2026 to June 30 2026

Statistics over entire affected area:

• Mean temperature anomaly: -6.0 °C
• Mean temperature: 5.8 °C
• Minimum temperature anomaly: -10.4 °C
• Minimum temperature: 1.8 °C

Event center: 47.5°N 275.0°E

Area affected: 93928 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_2026-Jun-13_to_2026-Jun-30_275.0_47.5

Download data: JSON

Event type: Cold spell

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

• Canada
• United States

Duration: 4 days

Time span: May 31 2026 to June 03 2026

Statistics over entire affected area:

• Mean temperature anomaly: -5.2 °C
• Mean temperature: 8.1 °C
• Minimum temperature anomaly: -8.8 °C
• Minimum temperature: 2.7 °C

Event center: 51.5°N 246.5°E

Area affected: 125140 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_2026-May-31_to_2026-Jun-03_246.5_51.5

Download data: JSON

Event type: Cold spell

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

• Canada
• United States

Duration: 11 days

Time span: May 27 2026 to June 06 2026

Statistics over entire affected area:

• Mean temperature anomaly: -4.0 °C
• Mean temperature: 6.6 °C
• Minimum temperature anomaly: -7.9 °C
• Minimum temperature: 2.2 °C

Event center: 41.0°N 299.0°E

Area affected: 710141 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_2026-May-27_to_2026-Jun-06_299.0_41.0

Download data: JSON

Event type: Cold spell

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

• Canada
• United States

Duration: 16 days

Time span: May 18 2026 to June 02 2026

Statistics over entire affected area:

• Mean temperature anomaly: -3.8 °C
• Mean temperature: -6.3 °C
• Minimum temperature anomaly: -11.0 °C
• Minimum temperature: -15.9 °C

Event center: 77.0°N 213.0°E

Area affected: 2463140 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_2026-May-18_to_2026-Jun-02_213.0_77.0

Download data: JSON

Event type: Cold spell

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

• Canada
• United States

Duration: 6 days

Time span: May 17 2026 to May 22 2026

Statistics over entire affected area:

• Mean temperature anomaly: -8.0 °C
• Mean temperature: 2.1 °C
• Minimum temperature anomaly: -16.3 °C
• Minimum temperature: -7.5 °C

Event center: 42.0°N 252.5°E

Area affected: 366474 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_2026-May-17_to_2026-May-22_252.5_42.0

Download data: JSON

Event type: Cold spell

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

• Canada
• United States

Duration: 21 days

Time span: May 16 2026 to June 05 2026

Statistics over entire affected area:

• Mean temperature anomaly: -2.7 °C
• Mean temperature: 3.9 °C
• Minimum temperature anomaly: -6.6 °C
• Minimum temperature: -7.6 °C

Event center: 58.5°N 200.0°E

Area affected: 1587232 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_2026-May-16_to_2026-Jun-05_200.0_58.5

Download data: JSON

Event type: Cold spell

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

• Canada
• United States

Duration: 6 days

Time span: May 15 2026 to May 20 2026

Statistics over entire affected area:

• Mean temperature anomaly: -7.7 °C
• Mean temperature: 2.9 °C
• Minimum temperature anomaly: -11.8 °C
• Minimum temperature: -1.5 °C

Event center: 52.5°N 254.0°E

Area affected: 487484 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_2026-May-15_to_2026-May-20_254.0_52.5