Martinsburg, WV

West Virginia · Records since 1891–2026

⛅ 79°F Feels like 85°
Currently in Martinsburg
As of 2:30 PM EDT

Records for September 11

🔥 Record High

100°F

September 11, 1925

+20° from 80° normal

❄ Record Low

32°F

September 11, 1917

-25° from 57° normal
🌞 Normal high: 80°F 🌑 Normal low: 57°F 1991–2020 normals

All-Time Records — Martinsburg

🔥
112°F
Hottest Day Ever
Jul 11, 1936
❄
-19°F
Coldest Day Ever
Jan 14, 1912
🌧
6.18"
Wettest Day Ever
Sep 24, 1912
☃
27.0"
Most Snow in One Day
Feb 24, 1914

First & Last Dates — Martinsburg

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)
222 days
Longest growing season
1892
121 days
Shortest growing season
1963
183 days
Normal growing season
1991–2020 average

Top 10 Record Highs — September 11

# Temp Date
🏆 100°F September 11, 1925
2 98°F September 11, 1964
3 98°F September 11, 1941
4 97°F September 11, 1983
5 96°F September 11, 1931
6 95°F September 11, 1897
7 94°F September 11, 1894
8 93°F September 11, 2019
9 93°F September 11, 1915
10 93°F September 11, 1912

Top 5 Record Lows — September 11

# Temp Date
🥶 32°F September 11, 1917
2 35°F September 11, 1924
3 39°F September 11, 1969
4 40°F September 11, 1914
5 41°F September 11, 1913
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 1891–2026. Climate normals represent the 1991–2020 average.

Heat Wave Summary — Martinsburg

threshold: 94°F (90th percentile of historical Jun–Aug highs)
4.1
Avg heat wave length
days (historical)
99°
Avg peak temp
during heat waves
17
Dangerous nights 2026
Overnights ≥ 70°F
0
Heat waves 2026
so far

Days ≥ 90°F Per Year

1892–2026
22
2026 so far
32
Avg/year 1970–2025
27
Avg/year (last 10 complete)
78
Most in a year (1943)

Average Daily High by Decade

Full year · complete decades only

Longest Heat Waves — Martinsburg

# Dates Days Peak Avg High Avg Overnight Low
🏆 Jul 19, 1930 – Jul 30, 1930 12 106°F (Jul 21) 102°F 72°F
2 Jun 20, 1943 – Jun 29, 1943 10 102°F (Jun 26) 99°F 69°F
3 Aug 26, 1953 – Sep 4, 1953 10 102°F (Sep 3) 98°F 63°F
4 Aug 8, 1943 – Aug 16, 1943 9 105°F (Aug 11) 100°F 65°F
5 Jul 27, 1983 – Aug 4, 1983 9 100°F (Jul 30) 96°F 66°F
6 Jul 17, 1991 – Jul 24, 1991 8 101°F (Jul 23) 97°F 70°F
7 Jul 19, 1987 – Jul 26, 1987 8 100°F (Jul 21) 97°F 71°F
8 Jun 19, 1923 – Jun 26, 1923 8 98°F (Jun 20) 96°F 68°F
9 Jul 26, 1940 – Aug 1, 1940 7 103°F (Jul 27) 98°F 70°F
10 Jul 30, 1933 – Aug 5, 1933 7 102°F (Aug 1) 98°F 70°F

Heat Waves Per Year

Warm Summer Nights (Jun–Aug)

Nights where the overnight low exceeded the 1991–2020 normal low

56
2026 total
above-normal nights
48.6
Avg / summer
1970–2020
77
Most in a summer
1892

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 (1891–2026)

Blue = above average · tan = below average · gold = 2026 (partial)
Since 1891, annual totals have trended +0.29" per decade, about +3.8" 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 Martinsburg is tracking against normal, year to date

Daily High Temperature vs Normal

Above normal Below normal

124 of 247 days with data were above the 1991–2020 normal high for their date.

Precipitation, Year to Date

24.04"
2026 YTD
Normal: 27.48"
-3.44"
0.32"
September so far
September normal: 4.03"
-3.71"
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 · Martinsburg is 3.44" behind the normal pace

Period Review — Aug 11 – Sep 10, 2026

Any window, evaluated against every other year on record — 31 days

Quick picks: Last 7 days Last 30 days Last 90 days This month
Seasons: Spring (Mar–May) Summer (Jun–Aug) Fall (Sep–Nov)
74.4°F
Average temperature
24th-warmest of 135
+1.6°
vs. average
Normal: 72.8°F (1991–2020)
5.90"
Precipitation
16th-wettest of 132
+2.30"
vs. average
Normal: 3.60" · 164% of normal

Average Temperature by Year — Aug 11 – Sep 10

1892–2026 · 2026 highlighted · trend +0.08° per decade (warming since 1892)

Precipitation by Year — Aug 11 – Sep 10

1892–2026 · 2026 highlighted · trend -0.02" per decade (drier since 1892)

Warmest Aug 11 – Sep 10 on Record

# Year Avg Temp
1 1900 78.1°F
2 1980 77.5°F
3 1959 77.1°F
4 2016 77.1°F
5 1939 76.7°F
6 1973 76.3°F
7 1947 76.2°F
8 1936 76.1°F
9 1943 76.1°F
10 1993 76.0°F

Coolest Aug 11 – Sep 10 on Record

# Year Avg Temp
1 1967 66.4°F
2 1946 67.4°F
3 1986 67.6°F
4 1982 67.7°F
5 1927 68.0°F
6 1909 68.1°F
7 2024 68.1°F
8 1963 68.3°F
9 1902 68.4°F
10 2017 68.6°F

Wettest Aug 11 – Sep 10 on Record

# Year Total
1 1911 9.67"
2 2018 9.14"
3 1942 9.00"
4 2021 8.80"
5 1955 8.36"
6 1926 8.00"
7 1996 7.86"
8 1928 7.54"
9 2011 7.48"
10 2006 7.21"

Driest Aug 11 – Sep 10 on Record

# Year Total
1 2025 0.10"
2 1892 0.41"
3 1964 0.49"
4 1995 0.62"
5 1925 0.69"
6 1927 0.90"
7 1989 0.92"
8 2009 0.94"
9 1981 0.99"
10 1982 1.03"
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.
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