Seattle Tacoma, WA

Washington · Records since 1945–2026

☁️ 61°F
Currently in Seattle Tacoma
As of 11:15 AM PDT

Records for September 7

🔥 Record High

94°F

September 7, 1981

+20° from 74° normal

❄ Record Low

45°F

September 7, 1992

-10° from 55° normal
🌞 Normal high: 74°F 🌑 Normal low: 55°F 1991–2020 normals

All-Time Records — Seattle Tacoma

🔥
108°F
Hottest Day Ever
Jun 28, 2021
❄
0°F
Coldest Day Ever
Jan 31, 1950
🌧
5.02"
Wettest Day Ever
Oct 20, 2003
☃
20.0"
Most Snow in One Day
Jan 13, 1950

Top 10 Record Highs — September 7

# Temp Date
🏆 94°F September 7, 1981
2 90°F September 7, 2012
3 86°F September 7, 1958
4 85°F September 7, 1969
5 85°F September 7, 1949
6 84°F September 7, 2020
7 84°F September 7, 1993
8 83°F September 7, 2014
9 83°F September 7, 2011
10 81°F September 7, 2021

Top 5 Record Lows — September 7

# Temp Date
🥶 45°F September 7, 1992
2 45°F September 7, 1960
3 48°F September 7, 2000
4 48°F September 7, 1950
5 49°F September 7, 1999
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 1945–2026. Climate normals represent the 1991–2020 average.

Heat Wave Summary — Seattle Tacoma

threshold: 85°F (90th percentile of historical Jun–Aug highs)
3.9
Avg heat wave length
days (historical)
92°
Avg peak temp
during heat waves
0
Dangerous nights 2026
Overnights ≥ 70°F
2
Heat waves 2026
so far

2026 Daily High Temperature vs Normal

Year to date
Above normal Below normal

116 of 249 days with data were above the 1991–2020 normal high for their date.

Days ≥ 90°F Per Year

1945–2026
4
2026 so far
4
Avg/year 1970–2025
7
Avg/year (last 10 complete)
13
Most in a year (2022)

Average Daily High by Decade

Full year · complete decades only

Longest Heat Waves — Seattle Tacoma

# Dates Days Peak Avg High Avg Overnight Low
🏆 Aug 12, 1967 – Aug 20, 1967 9 98°F (Aug 16) 89°F 59°F
2 Aug 5, 1977 – Aug 13, 1977 9 96°F (Aug 12) 90°F 59°F
3 Jul 22, 2018 – Jul 30, 2018 9 94°F (Jul 29) 90°F 60°F
4 Aug 6, 1981 – Aug 12, 1981 7 99°F (Aug 9) 92°F 64°F
5 Jul 25, 2022 – Jul 31, 2022 7 95°F (Jul 29) 93°F 63°F
6 Jun 30, 2015 – Jul 6, 2015 7 93°F (Jul 2) 90°F 62°F
7 Jul 25, 2009 – Jul 30, 2009 6 103°F (Jul 29) 94°F 65°F
8 Jul 15, 1979 – Jul 20, 1979 6 98°F (Jul 16) 91°F 59°F
9 Jul 5, 2024 – Jul 10, 2024 6 98°F (Jul 9) 92°F 62°F
10 Jul 23, 1958 – Jul 28, 1958 6 97°F (Jul 28) 90°F 59°F

Heat Waves Per Year

Warm Summer Nights (Jun–Aug)

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

36
2026 total
above-normal nights
27.8
Avg / summer
1970–2020
66
Most in a summer
2015

Above-Normal Summer Nights Per Year

Average June–August Low by Decade

Overnight lows · complete decades only

Precipitation

Actual vs. 1991–2020 full-month and full-season normals

20.49"
2026 YTD
Normal: 22.05"
-1.56"
0.36"
September so far
September normal: 1.61"
-1.25"
3
2026 heavy rain days
Days with ≥ 1.0"

2026 Accumulation vs. Normal

Running total since Jan 1 against the normal pace for the same date · Seattle Tacoma is 1.56" behind the normal pace

Monthly Precipitation — Last 24 Months

Blue = actual · dashed line = monthly normal

Annual Precipitation Per Year (1945–2026)

Blue = above average · tan = below average · gold = 2026 (partial)
Since 1945, annual totals have trended -0.15" per decade, about -1.2" across the record.

Heavy Rain Days Per Year (≥ 1.0")

Compare year-to-year changes in days with heavy rainfall (≥ 1.0")

Month in Review — August 2026

67.7°F

Average temperature · August 2026

39th-warmest month on record

20th-warmest August of 82 on record

+0.9° vs. 66.7° average (1991–2020)
71.2°F
Warmest month ever
July 2015
71.1°F
Warmest August ever
1967
95°F
Hottest of 2026
Jul 22

Average August Temperature by Year

1945–2026 · 2026 highlighted · trend +0.72° per decade (warming since 1945)

Precipitation — August 2026

Month total against the 1991–2020 average and every other August on record

0.56"
Total precipitation
August 2026
-0.41"
vs. average
Normal: 0.97" · 58% of normal
36th-driest
August rank
of 82 on record
4.59"
Wettest August ever
1975 · driest 0.00" (2012)

August Precipitation by Year

1945–2026 · 2026 highlighted · trend -0.04" per decade (drier since 1945)

Wettest Augusts on Record

# Year Total
1 1975 4.59"
2 1968 4.58"
3 1977 3.59"
4 2015 3.28"
5 2004 3.00"
6 2008 2.87"
7 1976 2.71"
8 2001 2.32"
9 1965 2.18"
10 1950 2.17"

Driest Augusts on Record

# Year Total
1 2012 0.00"
2 1974 0.01"
3 2017 0.02"
4 2006 0.02"
5 1967 0.02"
6 2002 0.04"
7 2022 0.05"
8 1986 0.10"
9 2021 0.11"
10 2011 0.13"

Warmest Augusts on Record

# Year Avg Temp
1 1967 71.1°F
2 2017 70.3°F
3 2022 70.0°F
4 2023 69.9°F
5 2013 69.4°F
6 2014 69.2°F
7 2019 69.1°F
8 2025 68.8°F
9 2018 68.8°F
10 2016 68.7°F

Warmest Months on Record (Any Month)

# Month Avg Temp
1 July 2015 71.2°F
2 August 1967 71.1°F
3 July 2018 70.7°F
4 August 2017 70.3°F
5 August 2022 70.0°F
6 August 2023 69.9°F
7 July 2024 69.8°F
8 July 2009 69.5°F
9 August 2013 69.4°F
10 July 2014 69.2°F

Nearby Stations — August 2026

How the same month ranked at the closest reporting stations

Station Avg Temp August Rank
Seattle Tacoma, WA 67.7°F 20th of 82
Seattle City, WA 68.6°F 14th of 132
Olympia, WA 65.4°F 19th of 79
Quillayute, WA 60.9°F 20th of 61
About this data. Monthly averages are the mean of daily average temperatures, computed from NOAA Threadex records via RCC ACIS. Months missing more than three days of observations are excluded from the rankings, so the in-progress month never appears. Rankings cover 980 complete months on record. Precipitation totals sum the daily reports for the month, with trace amounts counted as zero. A month missing any day of precipitation data is left out entirely (an unreported day is unreported rain), so the precipitation ranking covers 82 complete Augusts. Normals are the 1991–2020 mean for the same calendar month. Trend lines are a least-squares fit across every year shown.

Fall in Review — Fall 2026

September 1 – November 30, 2026

Fall 2026 is still under way. Season totals and rankings appear once November closes; the markers below update as they happen.

Summer to Winter — 2026

Each turning point of the season against its 1991–2020 normal date, with the earliest and latest on record

Marker 2026 Normal vs. normal Earliest Latest Drift
Last 90°F day
The final day of summer heat
 Jul 22
so far
 Aug 10 May 21, 1963 Sep 22, 1990 +5.4 d/decade
Last 80°F day
The last genuinely warm afternoon
 Aug 25
so far
 Sep 15 Aug 1, 1954 Oct 16, 2022 +0.4 d/decade
First high below 50°F
The first afternoon that stays cold
 not yet Nov 4 Sep 26, 1948 Nov 23, 2016 +1.8 d/decade
First 32°F freeze
Growing season over
 not yet Nov 18 Oct 16, 1946 Dec 24, 1999 +2.1 d/decade
First 28°F hard freeze
Cold enough to end tender growth
 not yet Dec 4 Oct 19, 1949 Dec 31, 1976 +2.4 d/decade
First 20°F night
Winter cold arriving
 not yet — Nov 11, 1955 Dec 31, 1951
First measurable snow
0.1" or more in a day
 not yet — Oct 27, 1971 Dec 26, 2021 +0.9 d/decade

Drift is a least-squares fit across every year on record. Positive means the marker has been arriving later.

First Freeze by Year

The first 32°F night of each autumn since 1945 · trending +2.1 days later per decade

254
Normal length
1991–2020 average
331
Longest on record
2016
176
Shortest on record
1954

Growing Season Length by Year

Days between the last spring freeze and the first fall freeze · trending +6.7 days longer per decade

Fall Average Temperature by Year

1945–2025 · 2026 highlighted · trend +0.41° per decade (warming since 1945)

Fall Precipitation by Year

1945–2025 · 2026 highlighted · trend +0.03" per decade (wetter since 1945)

About this data. Fall is meteorological autumn, September 1 through November 30, the window NOAA uses for seasonal statistics. Seasonal temperature is the day-weighted mean of the three monthly means; precipitation is their sum, and a season missing any of the three months is left out of the rankings. Freeze, heat and snow markers come from daily NOAA Threadex observations via RCC ACIS: freezes and snow are the first occurrence on or after July 1, and the last 90°F and 80°F days are the final ones anywhere in the calendar year. Growing season counts the freeze-free days between the last spring 32°F and the first fall 32°F.
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