Severe weather · Connecticut

Freeze Warning for 4 Connecticut counties

The National Weather Service in Upton, NY issued a Freeze Warning for parts of Connecticut, New Jersey and New York, in effect from midnight tonight to 9:00 AM EDT Sunday. Temperatures as low as 30 are expected.

Key facts

Alert
Freeze Warning (severe)
Issued by
National Weather Service, Upton NY
Areas
Northern Fairfield; Northern New Haven; Northern Middlesex; Northern New London; Western Passaic; Orange; Putnam
In effect
until 9:00 AM EDT, Oct 18, 2026
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What the National Weather Service says

“Take steps now to protect tender plants from the cold.”

NWS Upton NY, Freeze Warning, 2:20 AM EDT Oct 17, 2026 · official alert

“Sub-freezing temperatures as low as 30 expected.”

NWS Upton NY, Freeze Warning, 2:20 AM EDT Oct 17, 2026 · official alert

“Frost and freeze conditions could kill crops and other sensitive vegetation.”

NWS Upton NY, Freeze Warning, 2:20 AM EDT Oct 17, 2026 · official alert

What to do

Protect tender plants from the cold before midnight. Cover them or bring them indoors if you can, as the National Weather Service instructs.

Protect pipes and pets from the cold as well. Bring pets inside, and check on older neighbors.

If you must drive in the early morning hours, be careful and carry a winter kit. Avoid travel if you can.

Context

The warning covers Northern Fairfield, Northern New Haven, Northern Middlesex and Northern New London counties in Connecticut, Western Passaic County in New Jersey, and Orange and Putnam counties in New York.

FEMA flood-insurance claims in Fairfield County (12,693), New Haven County (9,638) and Middlesex County (2,266) date back to 1978. These counts cover only insured homes and businesses and relate to past flooding, not to freezes. Recent FEMA disaster declarations in these counties include the remnants of Hurricane Ida in 2021.

Updates

  1. The freeze warning is no longer in effect.
  2. NWS Upton NY issued the freeze warning until 9:00 AM EDT.

History here

This county: 12693 flood insurance claims in FEMA's National Flood Insurance Program records since 1978, most recent 2026.

This county: recent federal disaster declarations

  • DR-4820 (2024): severe storm, flooding, landslides, and mudslides
  • DR-4629 (2021): remnants of hurricane ida
  • DR-4580 (2021): tropical storm isaias
  • DR-4385 (2018): severe storms, tornadoes, and straight-line winds
  • DR-4106 (2013): severe winter storm and snowstorm

This county: 9638 flood insurance claims in FEMA's National Flood Insurance Program records since 1978, most recent 2026.

This county: recent federal disaster declarations

  • DR-4820 (2024): severe storm, flooding, landslides, and mudslides
  • DR-4629 (2021): remnants of hurricane ida
  • DR-4580 (2021): tropical storm isaias
  • DR-4385 (2018): severe storms, tornadoes, and straight-line winds
  • DR-4213 (2015): severe winter storm and snowstorm

This county: 2266 flood insurance claims in FEMA's National Flood Insurance Program records since 1978, most recent 2026.

This county: recent federal disaster declarations

  • DR-4629 (2021): remnants of hurricane ida
  • DR-4580 (2021): tropical storm isaias
  • DR-4410 (2018): severe storms and flooding
  • DR-4106 (2013): severe winter storm and snowstorm
  • DR-4087 (2012): hurricane sandy

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Questions

Is there a freeze warning in Connecticut?
Yes. The National Weather Service issued a Freeze Warning for Northern Fairfield, Northern New Haven, Northern Middlesex and Northern New London counties until 9:00 AM EDT Sunday.
How cold will it get during this freeze warning?
The National Weather Service expects sub-freezing temperatures as low as 30. Frost and freeze conditions could kill crops and other sensitive vegetation.
When does the freeze warning start and end?
It starts at midnight tonight and ends at 9:00 AM EDT Sunday. The alert was issued at 2:20 AM EDT on Saturday, October 17, 2026.

Sources

  1. NWS Upton NY: Freeze Warning, Oct 17, 2026 weather.gov
  2. FEMA OpenFEMA: NFIP claims and disaster declarations fema.gov

How this page is made. The Herebeat Hazard Desk builds event pages from official U.S. government data (National Weather Service, USGS, FEMA). The text is written with AI from that data; every number and quote is checked against the official source automatically before publishing, and the page is updated when the agency updates the event. The official source is always the reference. Spotted a mistake? info@herebeat.app. About the Hazard Desk.