Mount Pocono, PA

Pennsylvania · Records since 1901–2026

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

Records for September 11

🔥 Record High

89°F

September 11, 2013

+19° from 70° normal

❄ Record Low

27°F

September 11, 1917

-24° from 51° normal
🌞 Normal high: 70°F 🌑 Normal low: 51°F 1991–2020 normals

All-Time Records — Mount Pocono

🔥
95°F
Hottest Day Ever
Jul 31, 1954
❄
-35°F
Coldest Day Ever
Jan 14, 1912
🌧
6.85"
Wettest Day Ever
Aug 13, 1955
☃
30.0"
Most Snow in One Day
Feb 7, 1978

First & Last Dates — Mount Pocono

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)
187 days
Longest growing season
2011
62 days
Shortest growing season
1907
150 days
Normal growing season
1991–2020 average

Top 10 Record Highs — September 11

# Temp Date
🏆 89°F September 11, 2013
2 89°F September 11, 1983
3 88°F September 11, 1964
4 85°F September 11, 2019
5 85°F September 11, 1952
6 85°F September 11, 1931
7 84°F September 11, 1925
8 84°F September 11, 1908
9 82°F September 11, 1906
10 81°F September 11, 1990

Top 5 Record Lows — September 11

# Temp Date
🥶 27°F September 11, 1917
2 34°F September 11, 1969
3 35°F September 11, 1986
4 35°F September 11, 1935
5 36°F September 11, 1972
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 1901–2026. Climate normals represent the 1991–2020 average.

Heat Wave Summary — Mount Pocono

threshold: 84°F (90th percentile of historical Jun–Aug highs)
4.1
Avg heat wave length
days (historical)
89°
Avg peak temp
during heat waves
1
Dangerous nights 2026
Overnights ≥ 70°F
1
Heat waves 2026
so far

Days ≥ 90°F Per Year

1908–2026
3
2026 so far
3
Avg/year 1970–2025
3
Avg/year (last 10 complete)
11
Most in a year (1955)

Average Daily High by Decade

Full year · complete decades only

Longest Heat Waves — Mount Pocono

# Dates Days Peak Avg High Avg Overnight Low
🏆 Jul 12, 1952 – Jul 23, 1952 12 89°F (Jul 13) 86°F 65°F
2 Aug 25, 1953 – Sep 4, 1953 11 95°F (Sep 2) 90°F 60°F
3 Jun 2, 1925 – Jun 10, 1925 9 89°F (Jun 4) 86°F 60°F
4 Aug 28, 1973 – Sep 5, 1973 9 89°F (Aug 28) 88°F 63°F
5 Jul 17, 2011 – Jul 24, 2011 8 94°F (Jul 21) 88°F 67°F
6 Jul 26, 1909 – Aug 2, 1909 8 92°F (Jul 31) 87°F 54°F
7 Aug 10, 1944 – Aug 17, 1944 8 91°F (Aug 12) 88°F 64°F
8 Aug 11, 2002 – Aug 18, 2002 8 91°F (Aug 14) 88°F 63°F
9 Aug 2, 1930 – Aug 9, 1930 8 90°F (Aug 3) 86°F 62°F
10 Aug 26, 1980 – Sep 2, 1980 8 88°F (Sep 1) 86°F 61°F

Heat Waves Per Year

Warm Summer Nights (Jun–Aug)

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

45
2026 total
above-normal nights
40.7
Avg / summer
1970–2020
62
Most in a summer
2020

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 (1901–2026)

Blue = above average · tan = below average · gold = 2026 (partial)
Since 1901, annual totals have trended +1.01" per decade, about +12.6" 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 Mount Pocono is tracking against normal, year to date

Daily High Temperature vs Normal

Above normal Below normal

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

Precipitation, Year to Date

34.72"
2026 YTD
Normal: 33.38"
+1.34"
1.12"
September so far
September normal: 5.59"
-4.47"
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 · Mount Pocono is 1.34" 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)
65.5°F
Average temperature
30th-warmest of 111
+0.3°
vs. average
Normal: 65.2°F (1991–2020)
4.57"
Precipitation
41st-wettest of 109
-0.02"
vs. average
Normal: 4.59" · 100% of normal

Average Temperature by Year — Aug 11 – Sep 10

1902–2026 · 2026 highlighted · trend +0.30° per decade (warming since 1902)

Precipitation by Year — Aug 11 – Sep 10

1902–2026 · 2026 highlighted · trend +0.02" per decade (wetter since 1902)

Warmest Aug 11 – Sep 10 on Record

# Year Avg Temp
1 1947 69.0°F
2 2016 68.7°F
3 2015 68.1°F
4 2021 67.6°F
5 1953 67.5°F
6 2018 67.5°F
7 1980 67.4°F
8 1973 67.4°F
9 2002 67.4°F
10 1983 67.3°F

Coolest Aug 11 – Sep 10 on Record

# Year Avg Temp
1 1940 58.5°F
2 1941 58.5°F
3 1986 58.8°F
4 1924 59.4°F
5 1920 59.6°F
6 1934 59.9°F
7 1927 60.0°F
8 1907 60.3°F
9 1903 60.3°F
10 1963 60.3°F

Wettest Aug 11 – Sep 10 on Record

# Year Total
1 2021 18.91"
2 2011 14.28"
3 2004 13.74"
4 1940 12.38"
5 1933 12.18"
6 1926 10.47"
7 1979 9.53"
8 1905 8.64"
9 1929 8.47"
10 1934 8.43"

Driest Aug 11 – Sep 10 on Record

# Year Total
1 1944 0.38"
2 1972 0.82"
3 1963 0.82"
4 1964 1.26"
5 1916 1.37"
6 1976 1.43"
7 2025 1.55"
8 1943 1.73"
9 1978 1.79"
10 1946 2.03"
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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