Erie, PA

Pennsylvania · Records since 1873–2026

☀️ 72°F
Currently in Erie
As of 2:30 PM EDT

Records for September 11

🔥 Record High

92°F

September 11, 1925

+17° from 75° normal

❄ Record Low

42°F

September 11, 1967

-16° from 58° normal
🌞 Normal high: 75°F 🌑 Normal low: 58°F 1991–2020 normals

All-Time Records — Erie

🔥
100°F
Hottest Day Ever
Jun 25, 1988
❄
-18°F
Coldest Day Ever
Feb 16, 2015
🌧
10.37"
Wettest Day Ever
Jul 22, 1947
☃
22.6"
Most Snow in One Day
Nov 29, 2024

First & Last Dates — Erie

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)
252 days
Longest growing season
1878
120 days
Shortest growing season
1972
189 days
Normal growing season
1991–2020 average

Top 10 Record Highs — September 11

# Temp Date
🏆 92°F September 11, 1925
2 90°F September 11, 2013
3 90°F September 11, 1947
4 90°F September 11, 1900
5 89°F September 11, 1936
6 88°F September 11, 1961
7 87°F September 11, 1931
8 87°F September 11, 1896
9 85°F September 11, 1928
10 85°F September 11, 1904

Top 5 Record Lows — September 11

# Temp Date
🥶 42°F September 11, 1967
2 43°F September 11, 1879
3 44°F September 11, 1995
4 44°F September 11, 1918
5 45°F September 11, 1958
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 1873–2026. Climate normals represent the 1991–2020 average.

Heat Wave Summary — Erie

threshold: 86°F (90th percentile of historical Jun–Aug highs)
4.0
Avg heat wave length
days (historical)
91°
Avg peak temp
during heat waves
15
Dangerous nights 2026
Overnights ≥ 70°F
1
Heat waves 2026
so far

Days ≥ 90°F Per Year

1874–2026
6
2026 so far
4
Avg/year 1970–2025
6
Avg/year (last 10 complete)
17
Most in a year (1988)

Average Daily High by Decade

Full year · complete decades only

Longest Heat Waves — Erie

# Dates Days Peak Avg High Avg Overnight Low
🏆 Aug 20, 1959 – Aug 30, 1959 11 91°F (Aug 20) 88°F 70°F
2 Aug 26, 1953 – Sep 4, 1953 10 99°F (Sep 3) 92°F 68°F
3 Jun 18, 1923 – Jun 26, 1923 9 90°F (Jun 21) 88°F 71°F
4 Jul 23, 1941 – Jul 30, 1941 8 90°F (Jul 27) 88°F 73°F
5 Jul 8, 1936 – Jul 14, 1936 7 98°F (Jul 9) 95°F 78°F
6 Jul 17, 2011 – Jul 23, 2011 7 96°F (Jul 21) 90°F 73°F
7 Jun 29, 2018 – Jul 5, 2018 7 94°F (Jul 1) 88°F 73°F
8 Jul 2, 1921 – Jul 8, 1921 7 93°F (Jul 6) 91°F 73°F
9 Jun 28, 1949 – Jul 4, 1949 7 92°F (Jul 3) 88°F 72°F
10 Jul 30, 1955 – Aug 5, 1955 7 92°F (Aug 5) 90°F 70°F

Heat Waves Per Year

Warm Summer Nights (Jun–Aug)

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

49
2026 total
above-normal nights
39.5
Avg / summer
1970–2020
67
Most in a summer
2021

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 (1873–2026)

Blue = above average · tan = below average · gold = 2026 (partial)
Since 1873, annual totals have trended +0.52" per decade, about +7.9" 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 Erie is tracking against normal, year to date

Daily High Temperature vs Normal

Above normal Below normal

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

Precipitation, Year to Date

34.46"
2026 YTD
Normal: 27.65"
+6.81"
4.14"
September so far
September normal: 4.32"
-0.18"
8
2026 heavy rain days
Days with ≥ 1.0"

Accumulation vs. Normal

Running total since Jan 1 against the normal pace for the same date · Erie is 6.81" ahead of 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)
70.9°F
Average temperature
27th-warmest of 154
+0.9°
vs. average
Normal: 70.0°F (1991–2020)
8.34"
Precipitation
4th-wettest of 154
+4.93"
vs. average
Normal: 3.41" · 245% of normal

Average Temperature by Year — Aug 11 – Sep 10

1873–2026 · 2026 highlighted · trend +0.10° per decade (warming since 1873)

Precipitation by Year — Aug 11 – Sep 10

1873–2026 · 2026 highlighted · trend +0.04" per decade (wetter since 1873)

Warmest Aug 11 – Sep 10 on Record

# Year Avg Temp
1 1959 77.2°F
2 1947 76.2°F
3 2016 74.7°F
4 2018 74.2°F
5 1881 74.0°F
6 2021 73.7°F
7 1900 73.6°F
8 1937 73.1°F
9 2020 72.8°F
10 1945 72.7°F

Coolest Aug 11 – Sep 10 on Record

# Year Avg Temp
1 1885 63.2°F
2 1982 63.9°F
3 1967 64.5°F
4 1963 64.5°F
5 1957 64.6°F
6 1890 65.2°F
7 1887 65.2°F
8 1902 65.3°F
9 1888 65.4°F
10 1896 65.4°F

Wettest Aug 11 – Sep 10 on Record

# Year Total
1 1990 9.24"
2 1949 8.68"
3 1885 8.44"
4 2026 8.34"
5 1975 7.42"
6 1892 6.75"
7 2016 6.69"
8 1977 6.61"
9 1992 6.37"
10 1958 6.34"

Driest Aug 11 – Sep 10 on Record

# Year Total
1 1881 0.11"
2 1899 0.24"
3 1929 0.38"
4 2002 0.50"
5 1908 0.54"
6 1960 0.80"
7 1886 0.82"
8 2020 0.95"
9 2015 1.08"
10 1913 1.09"
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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