Category: Extremes affecting United States

Download data: JSON

Event type: Cold spell

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

• United States

Duration: 8 days

Time span: June 16 2026 to June 23 2026

Statistics over entire affected area:

• Mean temperature anomaly: -4.6 °C
• Mean temperature: 16.2 °C
• Minimum temperature anomaly: -6.5 °C
• Minimum temperature: 11.8 °C

Event center: 40.0°N 264.0°E

Area affected: 298604 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-16_to_2026-Jun-23_264.0_40.0

Download data: JSON

Event type: Cold spell

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

• United States

Duration: 17 days

Time span: June 14 2026 to June 30 2026

Statistics over entire affected area:

• Mean temperature anomaly: -2.0 °C
• Mean temperature: 4.1 °C
• Minimum temperature anomaly: -4.9 °C
• Minimum temperature: 1.8 °C

Event center: 57.5°N 181.0°E

Area affected: 1345302 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-14_to_2026-Jun-30_181.0_57.5

Download data: JSON

Event type: Cold spell

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

• United States

Duration: 6 days

Time span: June 05 2026 to June 10 2026

Statistics over entire affected area:

• Mean temperature anomaly: -5.5 °C
• Mean temperature: 3.0 °C
• Minimum temperature anomaly: -10.1 °C
• Minimum temperature: -2.2 °C

Event center: 66.5°N 203.0°E

Area affected: 116684 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-05_to_2026-Jun-10_203.0_66.5