Cold outbreak in United States, 23 to 26 September 2026
Cold outbreak in United States, 23 to 26 September 2026: 14 records at 13 stations, peak on 26 September 2026. Closed.
Data as of . Last revised (2026-10-17).
Key Facts
- Cold outbreak in United States, 23 to 26 September 2026 set or tied 14 station records at 13 stations.
- It ran from 23 September 2026 to 26 September 2026 (4 days) and its peak day was 26 September 2026.
- Status: closed.
- Portland WFO set a daily record low minimum temperature of 4.4 C (39.9 F) on 26 September 2026 (provisional).
- The busiest day was 26 September 2026 with 8 records.
- The oldest broken record in the ranked list had stood for 40 years.
Footprint
23 to 26 September 2026| Station | Type | Value | Date |
|---|---|---|---|
| Portland WFO | Record low minimum temperature | 4.4 C (39.9 F) | 2026-09-26 |
| Wamic Mill Oregon | Record low minimum temperature | 2.8 C (37.0 F) | 2026-09-25 |
| Mud Ridge | Record low minimum temperature | -1.1 C (30.0 F) | 2026-09-26 |
| Portland Kgw-Tv | Record low minimum temperature | 7.8 C (46.0 F) | 2026-09-26 |
| Cougar Mountain Washington | Record low minimum temperature | 2.8 C (37.0 F) | 2026-09-25 |
| Blewett Pass | Record low minimum temperature | 0.7 C (33.3 F) | 2026-09-25 |
| Hager Creek Washington | Record low minimum temperature | 1.1 C (34.0 F) | 2026-09-26 |
| Thunder Basin | Record low minimum temperature | -1.7 C (28.9 F) | 2026-09-26 |
| Mt. Wilson Oregon | Record low maximum temperature | 8.3 C (46.9 F) | 2026-09-25 |
| Corral Pass | Record low minimum temperature | -2.9 C (26.8 F) | 2026-09-26 |
| Roaring River | Record low minimum temperature | -0.9 C (30.4 F) | 2026-09-26 |
| Bogard R.S. California | Record low minimum temperature | -5.6 C (21.9 F) | 2026-09-26 |
| Metoluis Arm Oregon | Record low maximum temperature | 12.2 C (54.0 F) | 2026-09-25 |
| Olympia AP | Record low maximum temperature | 14.4 C (57.9 F) | 2026-09-25 |
Records per Day
Peak day 8| Date | Records |
|---|---|
| 2026-09-23 | 1 |
| 2026-09-25 | 5 |
| 2026-09-26 | 8 |
Top Records by Margin
Margin over the record replaced| Portland WFO, 09-26 | |
|---|---|
| Mud Ridge, 09-26 | |
| Hager Creek Washington, 09-26 | |
| Mt. Wilson Oregon, 09-25 | |
| Bogard R.S. California, 09-26 | |
| Cougar Mountain Washington, 09-23 | |
| Metoluis Arm Oregon, 09-25 | |
| Wamic Mill Oregon, 09-25 | |
| Portland Kgw-Tv, 09-26 | |
| Cougar Mountain Washington, 09-25 | |
| Thunder Basin, 09-26 | |
| Blewett Pass, 09-25 | |
| Corral Pass, 09-26 | |
| Roaring River, 09-26 |
Margin is how far the new value is beyond the record it replaced. Ties are not shown.
Margin Against Age of the Broken Record
| Margin (C) | Years the old record stood |
|---|---|
| 2.8 | 29 |
| 0.5 | 40 |
| 0.7 | 40 |
| 0.5 | 25 |
| 0.5 | 27 |
| 0.6 | 24 |
| 0.5 | 27 |
| 0.5 | 27 |
| 0.6 | 27 |
| 0.1 | 27 |
| 0.1 | 28 |
| 0.6 | 19 |
| 0.6 | 12 |
| 0.6 | 12 |
Compared With Other Events
Station records per event| Cold outbreak in United States and Mexico, 6 February to 5 March 2021 | |
|---|---|
| Cold outbreak in United States and Mexico, 13 October to 5 November 2020 | |
| Cold outbreak in United States and Mexico, 23 December 2017 to 8 January 2018 | |
| Cold outbreak in United States and Mexico, 3 to 23 January 2024 | |
| Cold outbreak in United States, 15 January to 10 February 2026 | |
| Cold outbreak in United States, 23 to 26 September 2026 (this event) |
Every Record Set
15 of 14| Date | Station | Record | Value | Margin | Years stood | Significance |
|---|---|---|---|---|---|---|
| 2026-09-23 | Cougar Mountain Washington | Record low maximum temperature (provisional) | 10.0 C (50.0 F) | 0.6 C (1.1 F) | 12 | 8 of 100 (Routine) |
| 2026-09-25 | Wamic Mill Oregon | Record low minimum temperature (provisional) | 2.8 C (37.0 F) | 0.5 C (0.9 F) | 40 | 17 of 100 (Routine) |
| 2026-09-25 | Cougar Mountain Washington | Record low minimum temperature (provisional) | 2.8 C (37.0 F) | 0.5 C (0.9 F) | 27 | 13 of 100 (Routine) |
| 2026-09-25 | Blewett Pass | Record low minimum temperature (provisional) | 0.7 C (33.3 F) | 0.5 C (0.9 F) | 27 | 12 of 100 (Routine) |
| 2026-09-25 | Mt. Wilson Oregon | Record low maximum temperature (provisional) | 8.3 C (46.9 F) | 0.6 C (1.1 F) | 27 | 11 of 100 (Routine) |
| 2026-09-25 | Metoluis Arm Oregon | Record low maximum temperature (provisional) | 12.2 C (54.0 F) | 0.6 C (1.1 F) | 12 | 6 of 100 (Routine) |
| 2026-09-25 | Olympia AP | Record low maximum temperature (tie) (provisional) | 14.4 C (57.9 F) | tie | 40 | 5 of 100 (Routine) |
| 2026-09-26 | Portland WFO | Record low minimum temperature (provisional) | 4.4 C (39.9 F) | 2.8 C (5.0 F) | 29 | 21 of 100 (Routine) |
| 2026-09-26 | Mud Ridge | Record low minimum temperature (provisional) | -1.1 C (30.0 F) | 0.7 C (1.3 F) | 40 | 17 of 100 (Routine) |
| 2026-09-26 | Portland Kgw-Tv | Record low minimum temperature (provisional) | 7.8 C (46.0 F) | 0.5 C (0.9 F) | 25 | 14 of 100 (Routine) |
| 2026-09-26 | Hager Creek Washington | Record low minimum temperature (provisional) | 1.1 C (34.0 F) | 0.6 C (1.1 F) | 24 | 12 of 100 (Routine) |
| 2026-09-26 | Thunder Basin | Record low minimum temperature (provisional) | -1.7 C (28.9 F) | 0.5 C (0.9 F) | 27 | 12 of 100 (Routine) |
| 2026-09-26 | Corral Pass | Record low minimum temperature (provisional) | -2.9 C (26.8 F) | 0.1 C (0.2 F) | 27 | 11 of 100 (Routine) |
| 2026-09-26 | Roaring River | Record low minimum temperature (provisional) | -0.9 C (30.4 F) | 0.1 C (0.2 F) | 28 | 11 of 100 (Routine) |
| 2026-09-26 | Bogard R.S. California | Record low minimum temperature (provisional) | -5.6 C (21.9 F) | 0.6 C (1.1 F) | 19 | 9 of 100 (Routine) |
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Source: NOAA National Centers for Environmental Information, Global Historical Climatology Network Daily (GHCN-Daily). Records are computed by World Extreme Weather Monitor and are not official NOAA products. (US Government open data (NOAA NCEI)) Data as of 2026-10-17. Events are found by this site from station records and are not official designations. Records are provisional until reprocessed.