Archive · 2026 so far

Heatwaves in the United States in 2026

This site counted 98 events of this type in the United States from 21 July 2026 to 2 November 2026, from official feeds. For what is happening now, the season and past disasters, see Heatwaves in the United States.

Part of a year. This site began recording on 21 July 2026, so earlier heatwaves in 2026 are not listed here.

This year is not over. New events are added as they are recorded.

98Events counted
98Severe or extreme

The most serious event

Extreme Heat Warning issued September 6 at 1:41PM CDT until September 8 at 8:00PM CDT by NWS Kansas City/Pleasant Hill MO, United States of America · 6 September 2026 · Severe

Chosen by the severity the feed gave it, then by magnitude where there is one.

By month

MonthEvents
July 2026 0
August 2026 0
September 2026 35
October 2026 63
November 2026 0

Month links open that month's worldwide review.

Heatwaves counted in 2026

Newest first. Each links to its full record.

Date (UTC)EventSeverity
9 Oct Extreme Heat Warning issued October 9 at 2:49PM PDT until October 9 at 8:00PM PDT by NWS San Diego CA, United States of America Severe
9 Oct Extreme Heat Warning issued October 9 at 12:44PM PDT until October 9 at 8:00PM PDT by NWS Phoenix AZ, United States of America Severe
9 Oct Extreme Heat Warning issued October 9 at 12:35PM PDT until October 9 at 8:00PM PDT by NWS Las Vegas NV, United States of America Severe
9 Oct Extreme Heat Warning issued October 9 at 2:59AM PDT until October 9 at 8:00PM PDT by NWS San Diego CA, United States of America Severe
9 Oct Extreme Heat Warning issued October 8 at 11:59PM PDT until October 9 at 8:00PM PDT by NWS Las Vegas NV, United States of America Severe
9 Oct Extreme Heat Warning issued October 8 at 11:18PM MST until October 9 at 8:00PM MST by NWS Phoenix AZ, United States of America Severe
9 Oct Extreme Heat Warning issued October 8 at 7:52PM MST until October 9 at 8:00PM MST by NWS Phoenix AZ, United States of America Severe
9 Oct Extreme Heat Warning issued October 8 at 7:52PM MST until October 8 at 8:00PM MST by NWS Phoenix AZ, United States of America Severe
9 Oct Extreme Heat Warning issued October 8 at 7:48PM PDT until October 8 at 8:00PM PDT by NWS San Diego CA, United States of America Severe
9 Oct Extreme Heat Warning issued October 8 at 7:48PM PDT until October 9 at 8:00PM PDT by NWS San Diego CA, United States of America Severe
8 Oct Extreme Heat Warning issued October 8 at 3:39PM PDT until October 9 at 8:00PM PDT by NWS Las Vegas NV, United States of America Severe
8 Oct Extreme Heat Warning issued October 8 at 12:33PM MST until October 9 at 8:00PM MST by NWS Phoenix AZ, United States of America Severe
8 Oct Extreme Heat Warning issued October 8 at 12:33PM MST until October 8 at 8:00PM MST by NWS Phoenix AZ, United States of America Severe
8 Oct Extreme Heat Warning issued October 8 at 4:57AM PDT until October 8 at 8:00PM PDT by NWS Los Angeles/Oxnard CA, United States of America Severe
8 Oct Extreme Heat Warning issued October 8 at 3:40AM PDT until October 9 at 8:00PM PDT by NWS Las Vegas NV, United States of America Severe
8 Oct Extreme Heat Warning issued October 8 at 12:19AM PDT until October 9 at 8:00PM PDT by NWS San Diego CA, United States of America Severe
8 Oct Extreme Heat Warning issued October 8 at 12:19AM PDT until October 8 at 8:00PM PDT by NWS San Diego CA, United States of America Severe
8 Oct Extreme Heat Warning issued October 7 at 11:52PM MST until October 8 at 8:00PM MST by NWS Phoenix AZ, United States of America Severe
8 Oct Extreme Heat Warning issued October 7 at 11:52PM MST until October 9 at 8:00PM MST by NWS Phoenix AZ, United States of America Severe
8 Oct Extreme Heat Warning issued October 7 at 9:21PM PDT until October 8 at 8:00PM PDT by NWS San Diego CA, United States of America Severe
8 Oct Extreme Heat Warning issued October 7 at 9:21PM PDT until October 9 at 8:00PM PDT by NWS San Diego CA, United States of America Severe
8 Oct Extreme Heat Warning issued October 7 at 8:31PM PDT until October 8 at 8:00PM PDT by NWS Los Angeles/Oxnard CA, United States of America Severe
7 Oct Extreme Heat Warning issued October 7 at 2:02PM PDT until October 9 at 8:00PM PDT by NWS Las Vegas NV, United States of America Severe
7 Oct Extreme Heat Warning issued October 7 at 12:11PM MST until October 9 at 8:00PM MST by NWS Phoenix AZ, United States of America Severe
7 Oct Extreme Heat Warning issued October 7 at 12:11PM MST until October 8 at 8:00PM MST by NWS Phoenix AZ, United States of America Severe
7 Oct Extreme Heat Warning issued October 7 at 11:47AM PDT until October 8 at 8:00PM PDT by NWS San Diego CA, United States of America Severe
7 Oct Extreme Heat Warning issued October 7 at 11:47AM PDT until October 9 at 8:00PM PDT by NWS San Diego CA, United States of America Severe
7 Oct Extreme Heat Warning issued October 7 at 9:41AM PDT until October 8 at 8:00PM PDT by NWS Los Angeles/Oxnard CA, United States of America Severe
7 Oct Extreme Heat Warning issued October 7 at 3:08AM PDT until October 9 at 8:00PM PDT by NWS Las Vegas NV, United States of America Severe
7 Oct Extreme Heat Warning issued October 7 at 12:14AM MST until October 9 at 8:00PM MST by NWS Phoenix AZ, United States of America Severe
7 Oct Extreme Heat Warning issued October 7 at 12:14AM MST until October 8 at 8:00PM MST by NWS Phoenix AZ, United States of America Severe
6 Oct Extreme Heat Warning issued October 6 at 3:38PM PDT until October 9 at 8:00PM PDT by NWS San Diego CA, United States of America Severe
6 Oct Extreme Heat Warning issued October 6 at 3:38PM PDT until October 8 at 8:00PM PDT by NWS San Diego CA, United States of America Severe
6 Oct Extreme Heat Warning issued October 6 at 3:02PM PDT until October 9 at 8:00PM PDT by NWS Las Vegas NV, United States of America Severe
6 Oct Extreme Heat Warning issued October 6 at 12:33PM PDT until October 8 at 8:00PM PDT by NWS San Diego CA, United States of America Severe
6 Oct Extreme Heat Warning issued October 6 at 12:33PM PDT until October 9 at 8:00PM PDT by NWS San Diego CA, United States of America Severe
6 Oct Extreme Heat Warning issued October 6 at 9:47AM MST until October 8 at 8:00PM MST by NWS Phoenix AZ, United States of America Severe
6 Oct Extreme Heat Warning issued October 6 at 9:47AM MST until October 9 at 8:00PM MST by NWS Phoenix AZ, United States of America Severe
5 Oct Extreme Heat Warning issued October 5 at 3:19AM PDT until October 8 at 8:00PM PDT by NWS San Diego CA, United States of America Severe
5 Oct Extreme Heat Warning issued October 5 at 2:46AM PDT until October 9 at 8:00PM PDT by NWS Las Vegas NV, United States of America Severe
5 Oct Extreme Heat Watch issued October 5 at 12:06AM MST until October 8 at 8:00PM MST by NWS Phoenix AZ, United States of America Severe
5 Oct Extreme Heat Warning issued October 4 at 9:10PM PDT until October 8 at 8:00PM PDT by NWS San Diego CA, United States of America Severe
4 Oct Extreme Heat Warning issued October 4 at 12:33PM PDT until October 9 at 8:00PM PDT by NWS Las Vegas NV, United States of America Severe
4 Oct Extreme Heat Watch issued October 4 at 11:38AM MST until October 8 at 8:00PM MST by NWS Phoenix AZ, United States of America Severe
4 Oct Extreme Heat Warning issued October 4 at 11:32AM PDT until October 8 at 8:00PM PDT by NWS San Diego CA, United States of America Severe
4 Oct Extreme Heat Warning issued October 4 at 11:04AM PDT until October 8 at 8:00PM PDT by NWS Los Angeles/Oxnard CA, United States of America Severe
4 Oct Extreme Heat Warning issued October 4 at 4:28AM PDT until October 8 at 8:00PM PDT by NWS San Diego CA, United States of America Severe
4 Oct Extreme Heat Warning issued October 4 at 12:19AM PDT until October 9 at 8:00PM PDT by NWS Las Vegas NV, United States of America Severe
4 Oct Extreme Heat Warning issued October 3 at 9:40PM PDT until October 8 at 8:00PM PDT by NWS San Diego CA, United States of America Severe
4 Oct Extreme Heat Warning issued October 3 at 6:05PM PDT until October 8 at 8:00PM PDT by NWS San Diego CA, United States of America Severe
3 Oct Extreme Heat Warning issued October 3 at 12:15PM PDT until October 8 at 8:00PM PDT by NWS Los Angeles/Oxnard CA, United States of America Severe
3 Oct Extreme Heat Warning issued October 3 at 12:03PM PDT until October 8 at 8:00PM PDT by NWS San Diego CA, United States of America Severe
3 Oct Extreme Heat Warning issued October 3 at 4:01AM PDT until October 8 at 8:00PM PDT by NWS San Diego CA, United States of America Severe
3 Oct Extreme Heat Warning issued October 2 at 9:13PM PDT until October 8 at 8:00PM PDT by NWS San Diego CA, United States of America Severe
2 Oct Extreme Heat Warning issued October 2 at 12:25PM PDT until October 8 at 8:00PM PDT by NWS San Diego CA, United States of America Severe
2 Oct Extreme Heat Warning issued October 2 at 10:38AM PDT until October 8 at 8:00PM PDT by NWS Los Angeles/Oxnard CA, United States of America Severe
2 Oct Extreme Heat Warning issued October 2 at 5:38AM PDT until October 8 at 8:00PM PDT by NWS Los Angeles/Oxnard CA, United States of America Severe
2 Oct Extreme Heat Warning issued October 2 at 12:32AM PDT until October 8 at 8:00PM PDT by NWS San Diego CA, United States of America Severe
2 Oct Extreme Heat Warning issued October 1 at 8:59PM PDT until October 8 at 8:00PM PDT by NWS San Diego CA, United States of America Severe
1 Oct Extreme Heat Warning issued October 1 at 1:12PM PDT until October 8 at 8:00PM PDT by NWS San Diego CA, United States of America Severe
1 Oct Extreme Heat Warning issued October 1 at 12:17PM PDT until October 8 at 8:00PM PDT by NWS Los Angeles/Oxnard CA, United States of America Severe
1 Oct Extreme Heat Warning issued October 1 at 12:29AM PDT until October 8 at 8:00PM PDT by NWS San Diego CA, United States of America Severe
1 Oct Extreme Heat Watch issued September 30 at 8:47PM PDT until October 7 at 9:00PM PDT by NWS San Diego CA, United States of America Severe
30 Sep Extreme Heat Watch issued September 30 at 1:41PM PDT until October 7 at 9:00PM PDT by NWS San Diego CA, United States of America Severe
30 Sep Extreme Heat Watch issued September 30 at 9:46AM PDT until October 8 at 8:00PM PDT by NWS Los Angeles/Oxnard CA, United States of America Severe
30 Sep Extreme Heat Watch issued September 30 at 3:05AM PDT until October 7 at 9:00PM PDT by NWS San Diego CA, United States of America Severe
12 Sep Extreme Heat Warning issued September 11 at 7:51PM PDT until September 11 at 8:00PM PDT by NWS San Diego CA, United States of America Severe
11 Sep Extreme Heat Warning issued September 11 at 12:50PM PDT until September 11 at 8:00PM PDT by NWS San Diego CA, United States of America Severe
11 Sep Extreme Heat Warning issued September 11 at 12:03PM MST until September 11 at 8:00PM MST by NWS Phoenix AZ, United States of America Severe
11 Sep Extreme Heat Warning issued September 11 at 12:02AM MST until September 11 at 8:00PM MST by NWS Phoenix AZ, United States of America Severe
11 Sep Extreme Heat Warning issued September 10 at 8:17PM MST until September 11 at 8:00PM MST by NWS Phoenix AZ, United States of America Severe
11 Sep Extreme Heat Warning issued September 10 at 7:35PM PDT until September 11 at 8:00PM PDT by NWS San Diego CA, United States of America Severe
10 Sep Extreme Heat Warning issued September 10 at 12:32PM PDT until September 10 at 8:00PM PDT by NWS San Diego CA, United States of America Severe
10 Sep Extreme Heat Warning issued September 10 at 4:00AM PDT until September 11 at 8:00PM PDT by NWS San Diego CA, United States of America Severe
10 Sep Extreme Heat Warning issued September 10 at 2:28AM PDT until September 10 at 8:00PM PDT by NWS Las Vegas NV, United States of America Severe
10 Sep Extreme Heat Warning issued September 10 at 1:12AM MST until September 11 at 8:00PM MST by NWS Phoenix AZ, United States of America Severe
9 Sep Extreme Heat Warning issued September 9 at 6:52PM CDT until September 9 at 7:00PM CDT by NWS Tulsa OK, United States of America Severe
9 Sep Extreme Heat Warning issued September 9 at 3:14PM PDT until September 10 at 8:00PM PDT by NWS Las Vegas NV, United States of America Severe
9 Sep Extreme Heat Warning issued September 9 at 12:22PM MST until September 11 at 8:00PM MST by NWS Phoenix AZ, United States of America Severe
9 Sep Extreme Heat Warning issued September 9 at 10:53AM CDT until September 9 at 7:00PM CDT by NWS Tulsa OK, United States of America Severe
8 Sep Extreme Heat Warning issued September 8 at 3:15PM PDT until September 10 at 8:00PM PDT by NWS Las Vegas NV, United States of America Severe
8 Sep Extreme Heat Warning issued September 8 at 2:35PM CDT until September 8 at 7:00PM CDT by NWS Topeka KS, United States of America Severe
8 Sep Extreme Heat Warning issued September 8 at 11:33AM MST until September 11 at 8:00PM MST by NWS Phoenix AZ, United States of America Severe
8 Sep Extreme Heat Warning issued September 8 at 7:01AM PDT until September 9 at 8:00PM PDT by NWS San Diego CA, United States of America Severe
8 Sep Extreme Heat Warning issued September 8 at 1:09AM MST until September 10 at 8:00PM MST by NWS Phoenix AZ, United States of America Severe
8 Sep Extreme Heat Warning issued September 8 at 12:39AM CDT until September 8 at 8:00PM CDT by NWS Springfield MO, United States of America Severe
8 Sep Extreme Heat Warning issued September 7 at 11:46PM CDT until September 8 at 8:00PM CDT by NWS Tulsa OK, United States of America Severe
8 Sep Extreme Heat Warning issued September 7 at 8:16PM PDT until September 11 at 8:00PM PDT by NWS San Diego CA, United States of America Severe
7 Sep Extreme Heat Warning issued September 7 at 1:33PM CDT until September 8 at 7:00PM CDT by NWS Topeka KS, United States of America Severe
7 Sep Extreme Heat Warning issued September 7 at 10:03AM AST until September 7 at 5:00PM AST by NWS San Juan PR, United States of America Severe
7 Sep Extreme Heat Warning issued September 7 at 3:55AM CDT until September 8 at 8:00PM CDT by NWS Kansas City/Pleasant Hill MO, United States of America Severe
7 Sep Extreme Heat Warning issued September 7 at 3:25AM CDT until September 7 at 8:00PM CDT by NWS Springfield MO, United States of America Severe
7 Sep Extreme Heat Warning issued September 7 at 12:33AM MST until September 10 at 8:00PM MST by NWS Phoenix AZ, United States of America Severe
7 Sep Extreme Heat Warning issued September 7 at 2:13AM CDT until September 8 at 7:00PM CDT by NWS Topeka KS, United States of America Severe
7 Sep Extreme Heat Warning issued September 7 at 2:39AM AST until September 7 at 5:00PM AST by NWS San Juan PR, United States of America Severe
7 Sep Extreme Heat Warning issued September 6 at 7:54PM CDT until September 6 at 8:00PM CDT by NWS Springfield MO, United States of America Severe
6 Sep Extreme Heat Warning issued September 6 at 2:08PM CDT until September 8 at 7:00PM CDT by NWS Topeka KS, United States of America Severe
6 Sep Extreme Heat Warning issued September 6 at 1:41PM CDT until September 8 at 8:00PM CDT by NWS Kansas City/Pleasant Hill MO, United States of America Severe

What is counted

Events this site stored from official feeds, by event time in UTC. Not counted: NASA FIRMS satellite fire detections, US National Weather Service county warnings, tornado and marine warnings, and national weather warnings below "severe". Recorded is not the same as happened: an event no monitored agency published is not here. Feeds and their terms: data sources; method: methodology.