Hartford, CT

Connecticut · Records since 1905–2026

☀️ 68°F
Currently in Hartford
As of 4:15 PM EST

Records for November 4

🔥 Record High

78°F

November 4, 1987

+22° from 56° normal

❄ Record Low

23°F

November 4, 1984

-13° from 36° normal
🌞 Normal high: 56°F 🌑 Normal low: 36°F 1991–2020 normals

All-Time Records — Hartford

🔥
103°F
Hottest Day Ever
Jul 22, 2011
❄
-26°F
Coldest Day Ever
Jan 22, 1961
🌧
7.70"
Wettest Day Ever
Aug 19, 1955
☃
24.0"
Most Snow in One Day
Jan 12, 2011

First & Last Dates — Hartford

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)
213 days
Longest growing season
1920
130 days
Shortest growing season
1962
175 days
Normal growing season
1991–2020 average

Top 10 Record Highs — November 4

# Temp Date
🏆 78°F November 4, 1987
2 77°F November 4, 1975
3 75°F November 4, 1994
4 74°F November 4, 1990
5 74°F November 4, 1946
6 73°F November 4, 2022
7 72°F November 4, 1914
8 71°F November 4, 2005
9 70°F November 4, 2015
10 70°F November 4, 1977

Top 5 Record Lows — November 4

# Temp Date
🥶 23°F November 4, 1984
2 23°F November 4, 1951
3 24°F November 4, 2013
4 24°F November 4, 2006
5 26°F November 4, 1998
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 1905–2026. Climate normals represent the 1991–2020 average.

Heat Wave Summary — Hartford

threshold: 91°F (90th percentile of historical Jun–Aug highs)
4.0
Avg heat wave length
days (historical)
96°
Avg peak temp
during heat waves
11
Dangerous nights 2026
Overnights ≥ 70°F
2
Heat waves 2026
so far

Days ≥ 90°F Per Year

1905–2026
19
2026 so far
16
Avg/year 1970–2025
26
Avg/year (last 10 complete)
39
Most in a year (2020)

Average Daily High by Decade

Full year · complete decades only

Longest Heat Waves — Hartford

# Dates Days Peak Avg High Avg Overnight Low
🏆 Aug 11, 2002 – Aug 19, 2002 9 99°F (Aug 14) 96°F 69°F
2 Aug 27, 1973 – Sep 4, 1973 9 98°F (Aug 30) 94°F 69°F
3 Jul 16, 1991 – Jul 23, 1991 8 101°F (Jul 21) 97°F 68°F
4 Jul 21, 2016 – Jul 28, 2016 8 99°F (Jul 22) 95°F 65°F
5 Aug 10, 1944 – Aug 17, 1944 8 98°F (Aug 11) 96°F 68°F
6 Jul 24, 1970 – Jul 31, 1970 8 96°F (Jul 28) 93°F 69°F
7 Aug 28, 1953 – Sep 3, 1953 7 101°F (Sep 2) 97°F 66°F
8 Jul 15, 1977 – Jul 21, 1977 7 101°F (Jul 21) 96°F 70°F
9 Jul 7, 1981 – Jul 13, 1981 7 97°F (Jul 8) 94°F 71°F
10 Aug 9, 1988 – Aug 15, 1988 7 97°F (Aug 13) 95°F 72°F

Heat Waves Per Year

Warm Summer Nights (Jun–Aug)

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

43
2026 total
above-normal nights
41.5
Avg / summer
1970–2020
63
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 (1905–2026)

Blue = above average · tan = below average · gold = 2026 (partial)
Since 1905, annual totals have trended +0.71" per decade, about +8.5" 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 Hartford is tracking against normal, year to date

Daily High Temperature vs Normal

Above normal Below normal

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

Precipitation, Year to Date

38.79"
2026 YTD
Normal: 39.80"
-1.01"
0.00"
November so far
November normal: 3.51"
-3.51"
11
2026 heavy rain days
Days with ≥ 1.0"

Accumulation vs. Normal

Running total since Jan 1 against the normal pace for the same date · Hartford is 1.01" 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)
52.7°F
Average temperature
51st-warmest of 122
+0.6°
vs. average
Normal: 52.1°F (1991–2020)
2.37"
Precipitation
45th-driest of 120
-2.15"
vs. average
Normal: 4.52" · 52% of normal

Average Temperature by Year — Oct 4 – Nov 3

1905–2026 · 2026 highlighted

Precipitation by Year — Oct 4 – Nov 3

1905–2026 · 2026 highlighted · trend +0.12" per decade (wetter since 1905)

Warmest Oct 4 – Nov 3 on Record

# Year Avg Temp
1 2017 59.6°F
2 2007 58.4°F
3 1971 58.3°F
4 1920 57.6°F
5 1947 57.3°F
6 1990 57.3°F
7 1946 57.3°F
8 1949 57.3°F
9 2024 56.3°F
10 2021 56.3°F

Coolest Oct 4 – Nov 3 on Record

# Year Avg Temp
1 1988 45.2°F
2 1925 45.3°F
3 2002 47.0°F
4 1940 47.3°F
5 1992 47.7°F
6 1980 47.9°F
7 1978 48.0°F
8 1917 48.1°F
9 1976 48.1°F
10 1974 48.2°F

Wettest Oct 4 – Nov 3 on Record

# Year Total
1 2005 16.36"
2 1955 11.60"
3 1995 10.15"
4 2017 8.81"
5 1951 8.00"
6 1913 7.96"
7 1959 7.69"
8 1990 7.63"
9 1989 7.19"
10 2019 6.77"

Driest Oct 4 – Nov 3 on Record

# Year Total
1 1952 0.11"
2 1924 0.18"
3 2024 0.52"
4 1918 0.58"
5 1935 0.60"
6 1963 0.70"
7 2001 0.75"
8 1946 0.80"
9 2000 1.06"
10 1986 1.15"
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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