Myrtle Beach, SC

South Carolina · Records since 1931–2026

☁️ 84°F Feels like 93°
Currently in Myrtle Beach
As of 2:30 PM EDT

Records for September 11

🔥 Record High

94°F

September 11, 2002

+10° from 84° normal

❄ Record Low

50°F

September 11, 1956

-19° from 69° normal
🌞 Normal high: 84°F 🌑 Normal low: 69°F 1991–2020 normals

All-Time Records — Myrtle Beach

🔥
104°F
Hottest Day Ever
Aug 5, 1954
❄
9°F
Coldest Day Ever
Feb 18, 1958
🌧
12.04"
Wettest Day Ever
Sep 15, 1999
☃
11.0"
Most Snow in One Day
Dec 24, 1989

First & Last Dates — Myrtle Beach

How early and how late each seasonal turning point has ever arrived, across the full period of record

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Range ever recorded Normal date (1991–2020)
295 days
Longest growing season
2024
191 days
Shortest growing season
2001
249 days
Normal growing season
1991–2020 average

Top 10 Record Highs — September 11

# Temp Date
🏆 94°F September 11, 2002
2 93°F September 11, 1945
3 91°F September 11, 1950
4 90°F September 11, 1990
5 90°F September 11, 1954
6 89°F September 11, 2018
7 89°F September 11, 1989
8 89°F September 11, 1968
9 88°F September 11, 2020
10 88°F September 11, 2016

Top 5 Record Lows — September 11

# Temp Date
🥶 50°F September 11, 1956
2 55°F September 11, 1998
3 56°F September 11, 1949
4 58°F September 11, 2012
5 60°F September 11, 1966
About this data — Records are sourced from the NOAA Threadex dataset via RCC ACIS, a quality-controlled record for long-term climate stations. Threadex adjusts for station relocations and observation-time changes, making records comparable across all years since 1931–2026. Climate normals represent the 1991–2020 average.

Heat Wave Summary — Myrtle Beach

threshold: 92°F (90th percentile of historical Jun–Aug highs)
4.4
Avg heat wave length
days (historical)
97°
Avg peak temp
during heat waves
97
Dangerous nights 2026
Overnights ≥ 70°F
1
Heat waves 2026
so far

Days ≥ 90°F Per Year

1931–2026
37
2026 so far
22
Avg/year 1970–2025
19
Avg/year (last 10 complete)
51
Most in a year (2010)

Average 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

58
2026 total
above-normal nights
42.1
Avg / summer
1970–2020
69
Most in a summer
2010

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

Above normal Below normal

150 of 253 days with data were above the 1991–2020 normal high for their date.

Precipitation, Year to Date

18.15"
2026 YTD
Normal: 33.71"
-15.56"
1.37"
September so far
September normal: 6.65"
-5.28"
3
2026 heavy rain days
Days with ≥ 1.0"

Accumulation vs. Normal

Running total since Jan 1 against the normal pace for the same date · Myrtle Beach is 15.56" behind the normal pace

Period Review — Jun 12 – Sep 10, 2026

Any window, evaluated against every other year on record — 91 days

Quick picks: Last 7 days Last 30 days Last 90 days This month
Seasons: Spring (Mar–May) Summer (Jun–Aug) Fall (Sep–Nov)
81.6°F
Average temperature
3rd-warmest of 67
+2.1°
vs. average
Normal: 79.5°F (1991–2020)
10.73"
Precipitation
5th-driest of 56
-7.08"
vs. average
Normal: 17.81" · 60% of normal

Average Temperature by Year — Jun 12 – Sep 10

1932–2026 · 2026 highlighted · trend +0.20° per decade (warming since 1932)

Precipitation by Year — Jun 12 – Sep 10

1932–2026 · 2026 highlighted · trend -0.09" per decade (drier since 1932)

Warmest Jun 12 – Sep 10 on Record

# Year Avg Temp
1 2010 82.1°F
2 2016 81.6°F
3 2026 81.6°F
4 1941 81.3°F
5 2015 81.1°F
6 2011 80.9°F
7 2020 80.8°F
8 1998 80.7°F
9 1969 80.6°F
10 1970 80.5°F

Coolest Jun 12 – Sep 10 on Record

# Year Avg Temp
1 1967 75.2°F
2 1946 76.6°F
3 1964 76.7°F
4 1963 77.0°F
5 1965 77.1°F
6 1962 77.6°F
7 1944 77.7°F
8 1997 77.8°F
9 2001 77.9°F
10 1966 78.0°F

Wettest Jun 12 – Sep 10 on Record

# Year Total
1 1945 33.15"
2 1967 28.73"
3 1950 28.17"
4 2019 27.55"
5 1960 25.10"
6 2004 24.56"
7 2000 24.55"
8 2025 23.71"
9 2024 23.63"
10 1955 23.54"

Driest Jun 12 – Sep 10 on Record

# Year Total
1 2005 6.92"
2 1954 7.46"
3 2011 9.02"
4 1951 10.06"
5 2026 10.73"
6 1949 11.61"
7 2009 11.77"
8 1966 12.49"
9 1963 12.91"
10 2007 13.09"
About this data. Pick any start and end date and this becomes the same kind of review as the Month and Fall tabs, just for exactly the window you asked for — the generalized version of the same engine, evaluated across every year on record. Average temperature is the mean of each day's (high + low) / 2; precipitation is the sum of daily totals. A year missing more than about a fifth of the window's days is excluded from the temperature ranking; any missing day excludes a year from the precipitation ranking, since an unreported day is unreported rain. Ranges that cross from December into January aren't supported yet. Normals are the 1991–2020 mean for the same window.
← Back to all stations