New Orleans, LA

Louisiana · Records since 1946–2026

🌦️ 78°F Feels like 86°
Currently in New Orleans
As of 1:15 PM CDT

Records for September 11

🔥 Record High

98°F

September 11, 1980

+9° from 89° normal

❄ Record Low

57°F

September 11, 1969

-18° from 75° normal
🌞 Normal high: 89°F 🌑 Normal low: 75°F 1991–2020 normals

All-Time Records — New Orleans

🔥
105°F
Hottest Day Ever
Aug 27, 2023
❄
11°F
Coldest Day Ever
Dec 23, 1989
🌧
12.24"
Wettest Day Ever
May 8, 1995
☃
8.0"
Most Snow in One Day
Jan 21, 2025

First & Last Dates — New Orleans

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)
349 days
Longest growing season
1999
229 days
Shortest growing season
1968

Top 10 Record Highs — September 11

# Temp Date
🏆 98°F September 11, 1980
2 95°F September 11, 2019
3 95°F September 11, 2014
4 94°F September 11, 2023
5 94°F September 11, 2010
6 93°F September 11, 2025
7 93°F September 11, 1963
8 93°F September 11, 1947
9 92°F September 11, 2002
10 92°F September 11, 1992

Top 5 Record Lows — September 11

# Temp Date
🥶 57°F September 11, 1969
2 59°F September 11, 1976
3 64°F September 11, 1956
4 65°F September 11, 1999
5 65°F September 11, 1981
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 1946–2026. Climate normals represent the 1991–2020 average.

Heat Wave Summary — New Orleans

threshold: 95°F (90th percentile of historical Jun–Aug highs)
5.0
Avg heat wave length
days (historical)
98°
Avg peak temp
during heat waves
129
Dangerous nights 2026
Overnights ≥ 70°F
3
Heat waves 2026
so far

Days ≥ 90°F Per Year

1946–2026
86
2026 so far
77
Avg/year 1970–2025
101
Avg/year (last 10 complete)
127
Most in a year (2025)

Average Daily High by Decade

Full year · complete decades only

Longest Heat Waves — New Orleans

# Dates Days Peak Avg High Avg Overnight Low
🏆 Jul 29, 2023 – Aug 15, 2023 18 101°F (Jul 31) 99°F 80°F
2 Jul 30, 2024 – Aug 15, 2024 17 98°F (Aug 6) 96°F 79°F
3 Aug 16, 2011 – Aug 31, 2011 16 99°F (Aug 23) 97°F 78°F
4 Jul 4, 1980 – Jul 18, 1980 15 101°F (Jul 16) 97°F 78°F
5 Jul 10, 2023 – Jul 22, 2023 13 98°F (Jul 12) 96°F 78°F
6 Aug 13, 2026 – Aug 24, 2026 12 97°F (Aug 21) 96°F 78°F
7 Sep 3, 2019 – Sep 13, 2019 11 99°F (Sep 7) 97°F 77°F
8 Jun 15, 2022 – Jun 25, 2022 11 99°F (Jun 23) 96°F 80°F
9 Aug 25, 1995 – Sep 4, 1995 11 98°F (Aug 27) 96°F 74°F
10 Aug 17, 1980 – Aug 25, 1980 9 102°F (Aug 22) 97°F 76°F

Heat Waves Per Year

Warm Summer Nights (Jun–Aug)

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

54
2026 total
above-normal nights
20.9
Avg / summer
1970–2020
73
Most in a summer
2016

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 (1946–2026)

Blue = above average · tan = below average · gold = 2026 (partial)
Since 1946, annual totals have trended +0.98" per decade, about +7.7" 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 New Orleans is tracking against normal, year to date

Daily High Temperature vs Normal

Above normal Below normal

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

Precipitation, Year to Date

50.58"
2026 YTD
Normal: 47.96"
+2.62"
6.29"
September so far
September normal: 5.11"
+1.18"
13
2026 heavy rain days
Days with ≥ 1.0"

Accumulation vs. Normal

Running total since Jan 1 against the normal pace for the same date · New Orleans is 2.62" ahead of the normal pace

Period Review — Sep 1 – Nov 30, 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)
2026 is still under way for this window — totals and rankings appear once November 30 passes.

Average Temperature by Year — Sep 1 – Nov 30

1946–2025 · 2026 highlighted · trend +0.53° per decade (warming since 1946)

Precipitation by Year — Sep 1 – Nov 30

1946–2024 · 2026 highlighted · trend +0.04" per decade (wetter since 1946)

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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