Cold outbreak in United States, 8 to 22 September 2024
Cold outbreak in United States, 8 to 22 September 2024: 321 records at 255 stations, peak on 16 September 2024. Closed.
Data as of . Last revised (2026-10-17).
Key Facts
- Cold outbreak in United States, 8 to 22 September 2024 set or tied 321 station records at 255 stations.
- It ran from 8 September 2024 to 22 September 2024 (15 days) and its peak day was 16 September 2024.
- Status: closed.
- Ola set a daily record low maximum temperature of 15.6 C (60.1 F) on 15 September 2024.
- The busiest day was 16 September 2024 with 84 records.
- The oldest broken record in the ranked list had stood for 130 years.
Footprint
8 to 22 September 2024| Station | Type | Value | Date |
|---|---|---|---|
| Ola | Record low maximum temperature | 15.6 C (60.1 F) | 2024-09-15 |
| Salmon AP | Record low maximum temperature | 11.1 C (52.0 F) | 2024-09-12 |
| Bishop AP | Record low minimum temperature | 1.1 C (34.0 F) | 2024-09-17 |
| Julian Cdf | Record low minimum temperature | 6.7 C (44.1 F) | 2024-09-17 |
| Merced | Record low maximum temperature | 22.2 C (72.0 F) | 2024-09-16 |
| Turlock #2 | Record low maximum temperature | 21.7 C (71.1 F) | 2024-09-16 |
| Moroni | Record low maximum temperature | 17.2 C (63.0 F) | 2024-09-16 |
| Tonopah | Record low maximum temperature | 13.3 C (55.9 F) | 2024-09-17 |
| Monte Vista 2W | Record low maximum temperature | 15.6 C (60.1 F) | 2024-09-17 |
| Lompoc | Record low minimum temperature | 4.4 C (39.9 F) | 2024-09-11 |
| Big Bear Lake | Record low maximum temperature | 11.1 C (52.0 F) | 2024-09-16 |
| Silver Creek Falls | Record low maximum temperature | 14.4 C (57.9 F) | 2024-09-11 |
| El Centro Naf | Record low maximum temperature | 33.3 C (91.9 F) | 2024-09-16 |
| Tejon Rancho | Record low maximum temperature | 22.8 C (73.0 F) | 2024-09-17 |
| Pt Mugu Nf | Record low maximum temperature | 17.2 C (63.0 F) | 2024-09-22 |
| Palomar Mtn Obsy | Record low maximum temperature | 13.3 C (55.9 F) | 2024-09-16 |
| Alpine | Record low minimum temperature | -5.0 C (23.0 F) | 2024-09-17 |
| San Simon | Record low minimum temperature | 5.6 C (42.1 F) | 2024-09-22 |
| Pinnacles Np | Record low maximum temperature | 22.2 C (72.0 F) | 2024-09-15 |
Records per Day
Peak day 84| Date | Records |
|---|---|
| 2024-09-08 | 1 |
| 2024-09-09 | 1 |
| 2024-09-11 | 35 |
| 2024-09-12 | 65 |
| 2024-09-13 | 8 |
| 2024-09-14 | 3 |
| 2024-09-15 | 14 |
| 2024-09-16 | 84 |
| 2024-09-17 | 71 |
| 2024-09-18 | 18 |
| 2024-09-19 | 3 |
| 2024-09-20 | 9 |
| 2024-09-21 | 4 |
| 2024-09-22 | 5 |
Top Records by Margin
Margin over the record replaced| Big Bear Lake, 09-16 | |
|---|---|
| Tonopah, 09-17 | |
| Palomar Mtn Obsy, 09-16 | |
| Ola, 09-15 | |
| Salmon AP, 09-12 | |
| Pt Mugu Nf, 09-22 | |
| Lompoc, 09-11 | |
| El Centro Naf, 09-16 | |
| Pinnacles Np, 09-15 | |
| Silver Creek Falls, 09-11 | |
| Bishop AP, 09-17 | |
| Julian Cdf, 09-17 | |
| Monte Vista 2W, 09-17 | |
| Tejon Rancho, 09-17 | |
| Lompoc, 09-20 |
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 |
|---|---|
| 2.2 | 121 |
| 2.2 | 118 |
| 1.1 | 117 |
| 1.1 | 130 |
| 0.6 | 116 |
| 0.5 | 100 |
| 4.5 | 74 |
| 0.6 | 101 |
| 1.1 | 84 |
| 1.7 | 72 |
| 5.6 | 42 |
| 1.1 | 74 |
| 1.2 | 83 |
| 1.7 | 74 |
| 2.2 | 69 |
| 2.8 | 65 |
| 0.6 | 73 |
| 0.5 | 67 |
| 1.1 | 63 |
| 1.7 | 65 |
| 0.5 | 69 |
| 1.1 | 65 |
| 0.5 | 74 |
| 0.5 | 63 |
| 3.9 | 42 |
| 3.3 | 38 |
| 3.9 | 42 |
| 1.7 | 63 |
| 2.3 | 37 |
| 1.2 | 57 |
| 2.3 | 42 |
| 0.6 | 47 |
| 0.5 | 54 |
| 3.9 | 28 |
| 0.5 | 63 |
| 3.3 | 42 |
| 0.6 | 46 |
| 5.6 | 28 |
| 2.2 | 42 |
| 0.5 | 47 |
| 3.3 | 42 |
| 5.0 | 35 |
| 0.6 | 47 |
| 4.4 | 28 |
| 5.5 | 28 |
| 3.9 | 9 |
| 1.1 | 42 |
| 5.6 | 30 |
| 4.5 | 28 |
| 1.1 | 38 |
| 1.7 | 42 |
| 0.6 | 33 |
| 1.7 | 38 |
| 3.4 | 28 |
| 5.1 | 31 |
| 4.8 | 31 |
| 4.3 | 31 |
| 4.0 | 31 |
| 0.5 | 42 |
| 3.4 | 7 |
| 3.4 | 28 |
| 3.9 | 31 |
| 3.3 | 31 |
| 4.4 | 32 |
| 3.7 | 28 |
| 0.6 | 14 |
| 1.1 | 31 |
| 1.1 | 42 |
| 2.8 | 28 |
| 2.2 | 31 |
| 3.3 | 28 |
| 3.9 | 28 |
| 2.8 | 35 |
| 2.8 | 37 |
| 2.0 | 39 |
| 3.8 | 31 |
| 3.4 | 32 |
| 0.5 | 20 |
| 0.6 | 42 |
| 1.1 | 39 |
| 2.2 | 31 |
| 3.3 | 27 |
| 2.2 | 31 |
| 4.5 | 18 |
| 3.9 | 18 |
| 1.4 | 39 |
| 3.4 | 32 |
| 3.1 | 32 |
| 3.2 | 28 |
| 1.6 | 31 |
| 1.7 | 31 |
| 1.6 | 31 |
| 2.2 | 31 |
| 3.8 | 17 |
| 3.9 | 18 |
| 2.3 | 31 |
| 2.2 | 31 |
| 1.6 | 31 |
| 3.3 | 28 |
| 1.0 | 39 |
| 2.8 | 28 |
| 1.1 | 38 |
| 2.8 | 28 |
| 3.0 | 27 |
| 2.4 | 28 |
| 2.5 | 28 |
| 0.5 | 18 |
| 1.1 | 36 |
| 0.6 | 39 |
| 1.1 | 31 |
| 1.1 | 31 |
| 1.7 | 30 |
| 1.5 | 31 |
| 1.1 | 31 |
| 1.7 | 28 |
| 1.7 | 31 |
| 1.1 | 31 |
| 2.2 | 28 |
| 1.7 | 28 |
| 3.4 | 18 |
| 3.9 | 23 |
| 0.6 | 38 |
| 1.7 | 31 |
| 2.3 | 28 |
| 2.3 | 30 |
| 0.6 | 39 |
| 2.8 | 27 |
| 2.0 | 31 |
| 1.9 | 31 |
| 0.2 | 39 |
| 2.0 | 28 |
| 1.8 | 31 |
| 0.5 | 13 |
| 1.1 | 18 |
| 0.4 | 31 |
| 2.3 | 18 |
| 1.1 | 31 |
| 1.7 | 28 |
| 1.6 | 28 |
| 2.8 | 17 |
| 1.7 | 29 |
| 4.4 | 13 |
| 1.6 | 30 |
| 1.0 | 31 |
| 1.7 | 20 |
| 1.2 | 31 |
| 1.7 | 31 |
| 1.7 | 28 |
| 2.2 | 28 |
| 0.3 | 38 |
| 3.3 | 21 |
| 2.5 | 26 |
| 1.4 | 32 |
| 1.7 | 28 |
| 1.4 | 28 |
| 0.4 | 31 |
| 1.3 | 30 |
| 0.7 | 30 |
| 0.5 | 31 |
| 0.5 | 22 |
| 1.6 | 19 |
| 1.9 | 18 |
| 1.1 | 28 |
| 1.1 | 28 |
| 1.1 | 30 |
| 0.5 | 31 |
| 0.6 | 31 |
| 2.4 | 18 |
| 1.6 | 20 |
| 0.7 | 31 |
| 0.6 | 31 |
| 0.5 | 31 |
| 1.1 | 30 |
| 1.1 | 30 |
| 1.1 | 30 |
| 1.6 | 27 |
| 1.1 | 30 |
| 0.5 | 31 |
| 3.4 | 19 |
| 2.6 | 21 |
| 0.6 | 31 |
| 2.2 | 26 |
| 0.5 | 28 |
| 1.0 | 31 |
| 1.0 | 31 |
| 0.3 | 32 |
| 0.7 | 31 |
| 2.0 | 21 |
| 0.8 | 31 |
| 0.7 | 30 |
| 1.2 | 30 |
| 0.7 | 30 |
| 1.1 | 15 |
| 1.7 | 18 |
| 1.1 | 26 |
| 1.1 | 18 |
| 1.6 | 19 |
| 1.5 | 18 |
| 0.5 | 27 |
| 1.7 | 18 |
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, 8 to 22 September 2024 (this event) |
Every Record Set
20 of 321| Date | Station | Record | Value | Margin | Years stood | Significance |
|---|---|---|---|---|---|---|
| 2024-09-11 | Lompoc | Record low minimum temperature | 4.4 C (39.9 F) | 1.7 C (3.1 F) | 72 | 37 of 100 (Notable) |
| 2024-09-11 | Silver Creek Falls | Record low maximum temperature | 14.4 C (57.9 F) | 1.2 C (2.2 F) | 83 | 34 of 100 (Routine) |
| 2024-09-12 | Salmon AP | Record low maximum temperature | 11.1 C (52.0 F) | 2.2 C (4.0 F) | 118 | 43 of 100 (Notable) |
| 2024-09-15 | Ola | Record low maximum temperature | 15.6 C (60.1 F) | 2.2 C (4.0 F) | 121 | 44 of 100 (Notable) |
| 2024-09-15 | Pinnacles Np | Record low maximum temperature | 22.2 C (72.0 F) | 1.7 C (3.1 F) | 65 | 30 of 100 (Routine) |
| 2024-09-16 | Merced | Record low maximum temperature | 22.2 C (72.0 F) | 0.6 C (1.1 F) | 116 | 41 of 100 (Notable) |
| 2024-09-16 | Turlock #2 | Record low maximum temperature | 21.7 C (71.1 F) | 0.5 C (0.9 F) | 100 | 41 of 100 (Notable) |
| 2024-09-16 | Moroni | Record low maximum temperature | 17.2 C (63.0 F) | 0.6 C (1.1 F) | 101 | 41 of 100 (Notable) |
| 2024-09-16 | Big Bear Lake | Record low maximum temperature | 11.1 C (52.0 F) | 5.6 C (10.1 F) | 42 | 35 of 100 (Notable) |
| 2024-09-16 | El Centro Naf | Record low maximum temperature | 33.3 C (91.9 F) | 1.7 C (3.1 F) | 74 | 34 of 100 (Routine) |
| 2024-09-16 | Palomar Mtn Obsy | Record low maximum temperature | 13.3 C (55.9 F) | 2.8 C (5.0 F) | 65 | 33 of 100 (Routine) |
| 2024-09-17 | Bishop AP | Record low minimum temperature | 1.1 C (34.0 F) | 1.1 C (2.0 F) | 117 | 43 of 100 (Notable) |
| 2024-09-17 | Julian Cdf | Record low minimum temperature | 6.7 C (44.1 F) | 1.1 C (2.0 F) | 130 | 42 of 100 (Notable) |
| 2024-09-17 | Tonopah | Record low maximum temperature | 13.3 C (55.9 F) | 4.5 C (8.1 F) | 74 | 41 of 100 (Notable) |
| 2024-09-17 | Monte Vista 2W | Record low maximum temperature | 15.6 C (60.1 F) | 1.1 C (2.0 F) | 84 | 38 of 100 (Notable) |
| 2024-09-17 | Tejon Rancho | Record low maximum temperature | 22.8 C (73.0 F) | 1.1 C (2.0 F) | 74 | 34 of 100 (Routine) |
| 2024-09-17 | Alpine | Record low minimum temperature | -5.0 C (23.0 F) | 0.6 C (1.1 F) | 73 | 32 of 100 (Routine) |
| 2024-09-20 | Lompoc | Record low maximum temperature | 18.3 C (64.9 F) | 1.1 C (2.0 F) | 63 | 31 of 100 (Routine) |
| 2024-09-22 | Pt Mugu Nf | Record low maximum temperature | 17.2 C (63.0 F) | 2.2 C (4.0 F) | 69 | 34 of 100 (Routine) |
| 2024-09-22 | San Simon | Record low minimum temperature | 5.6 C (42.1 F) | 0.5 C (0.9 F) | 67 | 31 of 100 (Routine) |
The daily ledgers keep a limited number of records per day, so this list has 20 of the 321 records the event counts. The counts above use the full total.
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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.