Portland, OR

Oregon · Records since 1940–2026

☁️ 57°F
Currently in Portland
As of 1:45 PM PST

Records for November 4

🔥 Record High

69°F

November 4, 2016

+12° from 57° normal

❄ Record Low

27°F

November 4, 1957

-16° from 43° normal
🌞 Normal high: 57°F 🌑 Normal low: 43°F 1991–2020 normals

All-Time Records — Portland

🔥
116°F
Hottest Day Ever
Jun 28, 2021
❄
-3°F
Coldest Day Ever
Feb 2, 1950
🌧
2.69"
Wettest Day Ever
Nov 19, 1996
☃
14.4"
Most Snow in One Day
Jan 21, 1943

First & Last Dates — Portland

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)
307 days
Longest growing season
2016
173 days
Shortest growing season
1964
242 days
Normal growing season
1991–2020 average

Top 10 Record Highs — November 4

# Temp Date
🏆 69°F November 4, 2016
2 69°F November 4, 1980
3 69°F November 4, 1975
4 68°F November 4, 2020
5 68°F November 4, 2010
6 68°F November 4, 1949
7 67°F November 4, 2023
8 66°F November 4, 2012
9 65°F November 4, 2018
10 64°F November 4, 1997

Top 5 Record Lows — November 4

# Temp Date
🥶 27°F November 4, 1957
2 30°F November 4, 1961
3 31°F November 4, 2002
4 31°F November 4, 1959
5 32°F November 4, 1968
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 1940–2026. Climate normals represent the 1991–2020 average.

Heat Wave Summary — Portland

threshold: 90°F (90th percentile of historical Jun–Aug highs)
3.9
Avg heat wave length
days (historical)
99°
Avg peak temp
during heat waves
0
Dangerous nights 2026
Overnights ≥ 70°F
3
Heat waves 2026
so far

Days ≥ 90°F Per Year

1941–2026
18
2026 so far
13
Avg/year 1970–2025
22
Avg/year (last 10 complete)
31
Most in a year (2018)

Average Daily High by Decade

Full year · complete decades only

Longest Heat Waves — Portland

# Dates Days Peak Avg High Avg Overnight Low
🏆 Jul 25, 2009 – Aug 3, 2009 10 106°F (Jul 28) 97°F 65°F
2 Jul 22, 2018 – Jul 30, 2018 9 99°F (Jul 29) 94°F 62°F
3 Jul 24, 2022 – Jul 31, 2022 8 102°F (Jul 26) 98°F 67°F
4 Aug 12, 1967 – Aug 19, 1967 8 98°F (Aug 15) 94°F 59°F
5 Jun 29, 2015 – Jul 6, 2015 8 97°F (Jul 2) 94°F 63°F
6 Aug 3, 1972 – Aug 9, 1972 7 104°F (Aug 7) 96°F 61°F
7 Jul 4, 2024 – Jul 10, 2024 7 104°F (Jul 9) 98°F 64°F
8 Sep 4, 1944 – Sep 10, 1944 7 101°F (Sep 5) 94°F 55°F
9 Aug 12, 2023 – Aug 17, 2023 6 108°F (Aug 14) 100°F 68°F
10 Aug 6, 1981 – Aug 11, 1981 6 107°F (Aug 8) 103°F 64°F

Heat Waves Per Year

Warm Summer Nights (Jun–Aug)

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

48
2026 total
above-normal nights
34.5
Avg / summer
1970–2020
67
Most in a summer
2022

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 (1940–2026)

Blue = above average · tan = below average · gold = 2026 (partial)
Since 1940, annual totals have trended +0.02" per decade, about +0.2" 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 Portland is tracking against normal, year to date

Daily High Temperature vs Normal

Above normal Below normal

150 of 307 days with data were above the 1991–2020 normal high for their date.

Precipitation, Year to Date

20.18"
2026 YTD
Normal: 26.14"
-5.96"
0.01"
November so far
November normal: 5.45"
-5.44"
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 · Portland is 5.96" behind the normal pace

Period Review — Oct 4 – Nov 3, 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)
55.8°F
Average temperature
17th-warmest of 86
+1.4°
vs. average
Normal: 54.3°F (1991–2020)
2.05"
Precipitation
20th-driest of 86
-1.50"
vs. average
Normal: 3.55" · 58% of normal

Average Temperature by Year — Oct 4 – Nov 3

1941–2026 · 2026 highlighted · trend +0.31° per decade (warming since 1941)

Precipitation by Year — Oct 4 – Nov 3

1941–2026 · 2026 highlighted · trend -0.05" per decade (drier since 1941)

Warmest Oct 4 – Nov 3 on Record

# Year Avg Temp
1 2015 59.4°F
2 2014 59.2°F
3 2022 59.1°F
4 1944 57.7°F
5 1988 57.4°F
6 2023 57.4°F
7 1965 57.0°F
8 1987 56.9°F
9 2024 56.7°F
10 1952 56.6°F

Coolest Oct 4 – Nov 3 on Record

# Year Avg Temp
1 1949 48.4°F
2 1946 49.3°F
3 1956 50.7°F
4 2019 51.0°F
5 1968 51.3°F
6 1971 51.3°F
7 1984 51.5°F
8 1961 51.6°F
9 1948 51.8°F
10 1957 51.9°F

Wettest Oct 4 – Nov 3 on Record

# Year Total
1 1994 8.95"
2 1947 8.40"
3 2016 8.01"
4 1950 7.30"
5 1955 7.00"
6 1984 6.78"
7 2012 6.74"
8 1943 6.45"
9 2014 6.34"
10 1996 5.53"

Driest Oct 4 – Nov 3 on Record

# Year Total
1 2002 0.12"
2 1952 0.72"
3 1978 0.79"
4 1987 0.85"
5 2013 1.24"
6 1988 1.25"
7 1976 1.45"
8 2019 1.49"
9 1991 1.52"
10 1972 1.65"
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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