Worcester, MA

Massachusetts · Records since 1892–2026

☀️ 74°F
Currently in Worcester
As of 2:30 PM EDT

Records for September 11

🔥 Record High

91°F

September 11, 1983

+18° from 73° normal

❄ Record Low

39°F

September 11, 1917

-16° from 55° normal
🌞 Normal high: 73°F 🌑 Normal low: 55°F 1991–2020 normals

All-Time Records — Worcester

🔥
102°F
Hottest Day Ever
Jul 4, 1911
❄
-24°F
Coldest Day Ever
Feb 16, 1943
🌧
7.54"
Wettest Day Ever
Oct 13, 1895
☃
31.9"
Most Snow in One Day
Jan 27, 2015

First & Last Dates — Worcester

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)
215 days
Longest growing season
1916
120 days
Shortest growing season
1929
180 days
Normal growing season
1991–2020 average

Top 10 Record Highs — September 11

# Temp Date
🏆 91°F September 11, 1983
2 91°F September 11, 1931
3 90°F September 11, 2013
4 87°F September 11, 1952
5 87°F September 11, 1908
6 86°F September 11, 1925
7 86°F September 11, 1897
8 85°F September 11, 1982
9 85°F September 11, 1964
10 85°F September 11, 1961

Top 5 Record Lows — September 11

# Temp Date
🥶 39°F September 11, 1917
2 40°F September 11, 1933
3 40°F September 11, 1930
4 40°F September 11, 1926
5 41°F September 11, 1995
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 1892–2026. Climate normals represent the 1991–2020 average.

Heat Wave Summary — Worcester

threshold: 87°F (90th percentile of historical Jun–Aug highs)
3.9
Avg heat wave length
days (historical)
92°
Avg peak temp
during heat waves
6
Dangerous nights 2026
Overnights ≥ 70°F
2
Heat waves 2026
so far

Days ≥ 90°F Per Year

1892–2026
4
2026 so far
5
Avg/year 1970–2025
4
Avg/year (last 10 complete)
18
Most in a year (1949)

Average Daily High by Decade

Full year · complete decades only

Longest Heat Waves — Worcester

# Dates Days Peak Avg High Avg Overnight Low
🏆 Jun 25, 1901 – Jul 4, 1901 10 97°F (Jul 2) 92°F 69°F
2 Aug 28, 1953 – Sep 5, 1953 9 99°F (Sep 2) 91°F 68°F
3 Jul 3, 1912 – Jul 11, 1912 9 95°F (Jul 9) 92°F 70°F
4 Aug 10, 1944 – Aug 17, 1944 8 99°F (Aug 12) 96°F 68°F
5 Jul 22, 1892 – Jul 29, 1892 8 95°F (Jul 28) 92°F 67°F
6 Aug 11, 2002 – Aug 18, 2002 8 93°F (Aug 14) 90°F 70°F
7 Aug 9, 1988 – Aug 15, 1988 7 93°F (Aug 14) 91°F 71°F
8 Jul 8, 1905 – Jul 14, 1905 7 92°F (Jul 10) 90°F 68°F
9 Jul 6, 1937 – Jul 11, 1937 6 96°F (Jul 9) 92°F 63°F
10 Jul 27, 1929 – Aug 1, 1929 6 94°F (Jul 28) 90°F 61°F

Heat Waves Per Year

Warm Summer Nights (Jun–Aug)

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

59
2026 total
above-normal nights
43.1
Avg / summer
1970–2020
77
Most in a summer
1917

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 (1892–2026)

Blue = above average · tan = below average · gold = 2026 (partial)
Since 1892, annual totals have trended +1.15" per decade, about +15.3" 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 Worcester is tracking against normal, year to date

Daily High Temperature vs Normal

Above normal Below normal

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

Precipitation, Year to Date

31.47"
2026 YTD
Normal: 32.22"
-0.75"
1.42"
September so far
September normal: 4.24"
-2.82"
7
2026 heavy rain days
Days with ≥ 1.0"

Accumulation vs. Normal

Running total since Jan 1 against the normal pace for the same date · Worcester is 0.75" behind the normal pace

Period Review — Sep 1 – Sep 10, 2026

Any window, evaluated against every other year on record — 10 days

Quick picks: Last 7 days Last 30 days Last 90 days This month
Seasons: Spring (Mar–May) Summer (Jun–Aug) Fall (Sep–Nov)
65.8°F
Average temperature
49th-warmest of 133
+0.0°
vs. average
Normal: 65.7°F (1991–2020)
1.42"
Precipitation
35th-wettest of 132
+0.06"
vs. average
Normal: 1.36" · 104% of normal

Average Temperature by Year — Sep 1 – Sep 10

1892–2026 · 2026 highlighted

Precipitation by Year — Sep 1 – Sep 10

1893–2026 · 2026 highlighted · trend +0.03" per decade (wetter since 1893)

Warmest Sep 1 – Sep 10 on Record

# Year Avg Temp
1 2023 74.1°F
2 1999 73.3°F
3 1959 73.3°F
4 1961 72.2°F
5 2015 72.2°F
6 1921 72.1°F
7 1953 72.0°F
8 1983 71.9°F
9 1929 71.7°F
10 1900 71.4°F

Coolest Sep 1 – Sep 10 on Record

# Year Avg Temp
1 1994 58.4°F
2 1938 59.0°F
3 1975 59.2°F
4 1893 59.4°F
5 1976 59.4°F
6 1926 59.6°F
7 1928 59.6°F
8 1986 59.8°F
9 1984 59.9°F
10 1896 60.0°F

Wettest Sep 1 – Sep 10 on Record

# Year Total
1 2021 5.91"
2 2008 5.59"
3 1905 5.29"
4 2011 4.88"
5 1974 4.83"
6 1969 4.21"
7 1934 4.02"
8 2022 3.62"
9 1935 3.60"
10 1993 3.41"

Driest Sep 1 – Sep 10 on Record

# Year Total
1 2009 0.00"
2 1995 0.00"
3 1983 0.00"
4 1978 0.00"
5 1971 0.00"
6 1900 0.00"
7 2005 0.01"
8 1961 0.01"
9 1989 0.02"
10 2024 0.03"
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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