Myrtle Beach, SC
South Carolina · Records since 1931–2026
Records for September 26
🔥 Record High
September 26, 2018
+6° from 81° normal❄ Record Low
September 26, 1950
-19° from 65° normalAll-Time Records — Myrtle Beach
First & Last Dates — Myrtle Beach
How early and how late each seasonal turning point has ever arrived, across the full period of record
Top 10 Record Highs — September 26
| # | Temp | Date |
|---|---|---|
| 🏆 | 87°F | September 26, 2018 |
| 2 | 87°F | September 26, 2017 |
| 3 | 87°F | September 26, 2010 |
| 4 | 87°F | September 26, 1931 |
| 5 | 86°F | September 26, 2019 |
| 6 | 86°F | September 26, 1958 |
| 7 | 85°F | September 26, 2025 |
| 8 | 85°F | September 26, 2020 |
| 9 | 85°F | September 26, 1993 |
| 10 | 85°F | September 26, 1970 |
Top 5 Record Lows — September 26
| # | Temp | Date |
|---|---|---|
| 🥶 | 46°F | September 26, 1950 |
| 2 | 48°F | September 26, 1990 |
| 3 | 49°F | September 26, 1940 |
| 4 | 50°F | September 26, 1943 |
| 5 | 52°F | September 26, 2001 |
Heat Wave Summary — Myrtle Beach
threshold: 92°F (90th percentile of historical Jun–Aug highs)Days ≥ 90°F Per Year
1931–2026Average Daily High by Decade
Full year · complete decades only
Longest Heat Waves — Myrtle Beach
| # | Dates | Days | Peak | Avg High | Avg Overnight Low |
|---|---|---|---|---|---|
| 🏆 | Jul 2, 1942 – Jul 23, 1942 | 22 | 101°F (Jul 11) | 96°F | 74°F |
| 2 | Jul 25, 1941 – Aug 2, 1941 | 9 | 100°F (Jul 29) | 95°F | 76°F |
| 3 | Jul 23, 1949 – Jul 30, 1949 | 8 | 100°F (Jul 27) | 95°F | 73°F |
| 4 | Jun 20, 1950 – Jun 27, 1950 | 8 | 99°F (Jun 24) | 97°F | 74°F |
| 5 | Jul 26, 1999 – Aug 2, 1999 | 8 | 98°F (Aug 1) | 95°F | 76°F |
| 6 | Jul 6, 2026 – Jul 12, 2026 | 7 | 98°F (Jul 10) | 95°F | 77°F |
| 7 | Jul 25, 1942 – Jul 31, 1942 | 7 | 97°F (Jul 28) | 95°F | 71°F |
| 8 | Jun 12, 2015 – Jun 18, 2015 | 7 | 97°F (Jun 14) | 94°F | 76°F |
| 9 | Jun 25, 1952 – Jun 30, 1952 | 6 | 104°F (Jun 26) | 98°F | 74°F |
| 10 | Aug 1, 1954 – Aug 6, 1954 | 6 | 104°F (Aug 5) | 98°F | 74°F |
Heat Waves Per Year
Warm Summer Nights (Jun–Aug)
Nights where the overnight low exceeded the 1991–2020 normal low
Above-Normal Summer Nights Per Year
Average June–August Low by Decade
Overnight lows · complete decades only
Precipitation
Annual totals and trend across the full period of record · see this year's standing →
Monthly Precipitation — Last 24 Months
Blue = actual · dashed line = monthly normal
Annual Precipitation Per Year (1931–2026)
Blue = above average · tan = below average · gold = 2026 (partial)
Since 1931, annual totals have trended
+0.93" per decade,
about +8.7"
across the record.
Heavy Rain Days Per Year (≥ 1.0")
Compare year-to-year changes in days with heavy rainfall (≥ 1.0")
This Year — 2026
How Myrtle Beach is tracking against normal, year to date
Daily High Temperature vs Normal
161 of 267 days with data were above the 1991–2020 normal high for their date.
Precipitation, Year to Date
Accumulation vs. Normal
Running total since Jan 1 against the normal pace for the same date · Myrtle Beach is 17.38" behind the normal pace
Period Review — Sep 1 – Sep 25, 2026
Any window, evaluated against every other year on record — 25 days
Average Temperature by Year — Sep 1 – Sep 25
1931–2026 · 2026 highlighted · trend +0.12° per decade (warming since 1931)
Precipitation by Year — Sep 1 – Sep 25
1931–2025 · 2026 highlighted · trend +0.18" per decade (wetter since 1931)
Warmest Sep 1 – Sep 25 on Record
| # | Year | Avg Temp |
|---|---|---|
| 1 | 1947 | 82.3°F |
| 2 | 2018 | 80.0°F |
| 3 | 2010 | 78.5°F |
| 4 | 1970 | 78.5°F |
| 5 | 1931 | 78.4°F |
| 6 | 2026 | 78.3°F |
| 7 | 1945 | 78.1°F |
| 8 | 2005 | 78.0°F |
| 9 | 1957 | 77.8°F |
| 10 | 2019 | 77.8°F |
Coolest Sep 1 – Sep 25 on Record
| # | Year | Avg Temp |
|---|---|---|
| 1 | 1967 | 68.6°F |
| 2 | 1963 | 71.4°F |
| 3 | 1999 | 72.3°F |
| 4 | 1994 | 72.3°F |
| 5 | 1962 | 72.6°F |
| 6 | 1964 | 72.8°F |
| 7 | 1943 | 72.8°F |
| 8 | 1946 | 73.1°F |
| 9 | 2001 | 73.4°F |
| 10 | 1949 | 73.5°F |