Anchorage, AK
Alaska · Records since 1953–2026
Records for September 11
🔥 Record High
September 11, 1979
+12° from 57° normal❄ Record Low
September 11, 1992
-19° from 44° normalAll-Time Records — Anchorage
First & Last Dates — Anchorage
How early and how late each seasonal turning point has ever arrived, across the full period of record
Top 10 Record Highs — September 11
| # | Temp | Date |
|---|---|---|
| 🏆 | 69°F | September 11, 1979 |
| 2 | 67°F | September 11, 2018 |
| 3 | 66°F | September 11, 2014 |
| 4 | 65°F | September 11, 1974 |
| 5 | 64°F | September 11, 2019 |
| 6 | 64°F | September 11, 2009 |
| 7 | 64°F | September 11, 2003 |
| 8 | 64°F | September 11, 1984 |
| 9 | 63°F | September 11, 1961 |
| 10 | 62°F | September 11, 1997 |
Top 5 Record Lows — September 11
| # | Temp | Date |
|---|---|---|
| 🥶 | 25°F | September 11, 1992 |
| 2 | 32°F | September 11, 1980 |
| 3 | 34°F | September 11, 2012 |
| 4 | 34°F | September 11, 1973 |
| 5 | 35°F | September 11, 2020 |
Heat Wave Summary — Anchorage
threshold: 71°F (90th percentile of historical Jun–Aug highs)Average Daily High by Decade
Full year · complete decades only
Longest Heat Waves — Anchorage
| # | Dates | Days | Peak | Avg High | Avg Overnight Low |
|---|---|---|---|---|---|
| 🏆 | Jul 17, 2013 – Jul 31, 2013 | 15 | 79°F (Jul 21) | 74°F | 57°F |
| 2 | Jun 26, 2019 – Jul 9, 2019 | 14 | 90°F (Jul 4) | 80°F | 58°F |
| 3 | Aug 4, 2019 – Aug 17, 2019 | 14 | 77°F (Aug 7) | 76°F | 59°F |
| 4 | Aug 2, 2004 – Aug 11, 2004 | 10 | 78°F (Aug 2) | 74°F | 53°F |
| 5 | Aug 18, 1978 – Aug 26, 1978 | 9 | 75°F (Aug 24) | 72°F | 49°F |
| 6 | Jul 31, 2015 – Aug 7, 2015 | 8 | 79°F (Aug 3) | 76°F | 55°F |
| 7 | Jun 13, 2015 – Jun 19, 2015 | 7 | 83°F (Jun 15) | 78°F | 54°F |
| 8 | Jul 1, 2018 – Jul 7, 2018 | 7 | 80°F (Jul 3) | 76°F | 55°F |
| 9 | Jul 6, 2004 – Jul 12, 2004 | 7 | 78°F (Jul 8) | 76°F | 56°F |
| 10 | May 30, 2022 – Jun 5, 2022 | 7 | 78°F (Jun 3) | 76°F | 51°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 (1953–2026)
Blue = above average · tan = below average · gold = 2026 (partial)
Since 1953, annual totals have trended
+0.73" per decade,
about +5.2"
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 Anchorage is tracking against normal, year to date
Daily High Temperature vs Normal
68 of 253 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 · Anchorage is 3.70" ahead of the normal pace
Period Review — Sep 1 – Nov 30, 2026
Any window, evaluated against every other year on record — 91 days
Average Temperature by Year — Sep 1 – Nov 30
1954–2025 · 2026 highlighted · trend +0.54° per decade (warming since 1954)
Precipitation by Year — Sep 1 – Nov 30
1954–2025 · 2026 highlighted · trend +0.26" per decade (wetter since 1954)