Michael D Beckwith / CC BY 2.0
New Haven, CT Weather on July 17
July 17th in New Haven, CT typically brings warm summer weather, with average highs around 86°F and lows near 68°F. Over 51 years of records, the warmest July 17th was in 1988 (89°F average), while the coldest was 1989 (66°F) — a 23°F range across recorded history. Rain or other precipitation has occurred on about 24% of July 17th dates historically, with the wettest July 17th recording 5" of rain. The last decade has been 6.8°F warmer on this date compared to 20-30 years ago.
What to Expect on July 17
Planning for July 17th in New Haven, CT? Stay hydrated and seek shade during peak afternoon hours.
July 17 Weather Records for New Haven
- •The all-time record high for July 17th in New Haven, CT is 97°F, set in 1977.
- •The coldest July 17th on record dropped to 57°F in 2015.
- •Temperatures have reached 90°F or higher on July 17th in 15 of the last 51 years.
Frequently Asked Questions
What was the warmest July 17 ever in New Haven?
The warmest July 17 in New Haven, CT reached 97°F in 1977. That is 11°F above the long-term average high of 86°F.
What was the coldest July 17 ever in New Haven?
The coldest July 17 in New Haven, CT dropped to 57°F in 2015. That is 11°F below the long-term average low of 68°F.
What is the average temperature on July 17 in New Haven?
On July 17, New Haven averages a high of 86°F and a low of 68°F based on 51 years of NOAA weather observations from NEW HAVEN.
How many years of weather data are available for July 17 in New Haven?
We have 51 years of weather records for July 17 in New Haven, CT, sourced from NOAA's Global Historical Climatology Network. Records include daily high and low temperatures, precipitation, and snowfall data going back to 2025.
July 17 Weather History in New Haven
| Year | High | Low | Precip | Snow |
|---|---|---|---|---|
| 2025 | 90°F | 78°F | 0.08" | -- |
| 2024 | 90°F | 74°F | 2.26" | -- |
| 2023 | 89°F | 74°F | 0" | -- |
| 2022 | 86°F | 73°F | 0" | -- |
| 2021 | 90°F | 75°F | 0" | -- |
| 2020 | 80°F | 68°F | 0" | -- |
| 2019 | 91°F | 75°F | 0.71" | -- |
| 2018 | 86°F | 72°F | 5" | -- |
| 2017 | 83°F | 65°F | 0" | -- |
| 2016 | 87°F | 72°F | 0" | -- |
| 2015 | 79°F | 57°F | 0" | -- |
| 2014 | 80°F | 67°F | 0" | -- |
| 2013 | 91°F | 76°F | 0" | -- |
| 2012 | 91°F | 73°F | 0" | -- |
| 2011 | 86°F | 70°F | 0" | -- |
| 2010 | 89°F | 74°F | 0" | -- |
| 2009 | 85°F | 66°F | 0.2" | -- |
| 2008 | 87°F | 67°F | 0" | -- |
| 2007 | 83°F | 60°F | 0" | -- |
| 2006 | 92°F | 67°F | 0" | -- |
| 2005 | 79°F | 70°F | 0.28" | -- |
| 2004 | 83°F | 63°F | 0" | -- |
| 2003 | 81°F | 62°F | 0" | -- |
| 2002 | 81°F | 57°F | 0" | -- |
| 2001 | 73°F | 63°F | 0.2" | -- |
| 2000 | 80°F | 65°F | 0" | -- |
| 1997 | 91°F | 70°F | 0" | -- |
| 1996 | 88°F | 67°F | 0" | -- |
| 1995 | 84°F | 63°F | 0" | -- |
| 1992 | 76°F | 60°F | 0" | -- |
| 1991 | 93°F | 64°F | 0" | -- |
| 1990 | 88°F | 69°F | 0" | -- |
| 1989 | 74°F | 58°F | 2.54" | -- |
| 1988 | 96°F | 82°F | 0.08" | -- |
| 1987 | 93°F | 64°F | 0" | -- |
| 1986 | 85°F | 65°F | 0" | -- |
| 1985 | 87°F | 65°F | -- | -- |
| 1984 | 81°F | 64°F | 0" | -- |
| 1983 | 95°F | 69°F | 0" | -- |
| 1982 | 93°F | 71°F | 0" | -- |
| 1981 | 89°F | 65°F | 0" | -- |
| 1980 | 92°F | 75°F | 0" | -- |
| 1979 | 89°F | 74°F | 0.25" | -- |
| 1978 | 72°F | 65°F | 0" | -- |
| 1977 | 97°F | 73°F | 0" | -- |
| 1976 | 80°F | 64°F | 1.07" | -- |
| 1975 | 82°F | 70°F | 0" | -- |
| 1974 | 83°F | 62°F | 0" | -- |
| 1973 | 86°F | 63°F | 0" | -- |
| 1972 | 87°F | 72°F | 3.66" | -- |
| 1971 | 82°F | 69°F | 0" | -- |
Based on 51 years of data from NOAA station: NEW HAVEN
Monthly Climate Averages
Historical temperature and precipitation averages for New Haven, CT, based on 55+ years of weather data.
Temperatures in Fahrenheit. Precipitation and snowfall in inches.