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New Haven, Connecticut 7 Day Weather Forecast
Wx Forecast - Wx Discussion - Wx Aviation
NWS Forecast for New Haven CT
National Weather Service Forecast for: New Haven CT
Issued by: National Weather Service New York, NY
Updated: 1:49 am EDT Jul 26, 2025
 
Overnight

Overnight: Partly cloudy, with a low around 71. North wind around 6 mph.
Partly Cloudy

Saturday

Saturday: Mostly sunny, with a high near 86. Northeast wind around 7 mph becoming south in the afternoon.
Mostly Sunny

Saturday
Night
Saturday Night: A 30 percent chance of showers, mainly after 5am.  Mostly cloudy, with a low around 68. Southeast wind around 6 mph becoming calm  in the evening.
Partly Cloudy
then Chance
Showers
Sunday

Sunday: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 8am.  Mostly cloudy, with a high near 80. Light south wind increasing to 5 to 9 mph in the morning.  Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.
Showers
Likely

Sunday
Night
Sunday Night: A chance of showers and thunderstorms before 8pm, then a slight chance of showers between 8pm and 2am.  Mostly cloudy, with a low around 71. South wind around 5 mph becoming calm  in the evening.  Chance of precipitation is 30%.
Chance
T-storms then
Slight Chance
Showers
Monday

Monday: Sunny, with a high near 91.
Sunny

Monday
Night
Monday Night: Mostly clear, with a low around 72.
Mostly Clear

Tuesday

Tuesday: Sunny, with a high near 95.
Sunny

Tuesday
Night
Tuesday Night: Mostly clear, with a low around 73.
Mostly Clear

Lo 71 °F Hi 86 °F Lo 68 °F Hi 80 °F Lo 71 °F Hi 91 °F Lo 72 °F Hi 95 °F Lo 73 °F

Hazardous Weather Outlook
 

Overnight
 
Partly cloudy, with a low around 71. North wind around 6 mph.
Saturday
 
Mostly sunny, with a high near 86. Northeast wind around 7 mph becoming south in the afternoon.
Saturday Night
 
A 30 percent chance of showers, mainly after 5am. Mostly cloudy, with a low around 68. Southeast wind around 6 mph becoming calm in the evening.
Sunday
 
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 8am. Mostly cloudy, with a high near 80. Light south wind increasing to 5 to 9 mph in the morning. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.
Sunday Night
 
A chance of showers and thunderstorms before 8pm, then a slight chance of showers between 8pm and 2am. Mostly cloudy, with a low around 71. South wind around 5 mph becoming calm in the evening. Chance of precipitation is 30%.
Monday
 
Sunny, with a high near 91.
Monday Night
 
Mostly clear, with a low around 72.
Tuesday
 
Sunny, with a high near 95.
Tuesday Night
 
Mostly clear, with a low around 73.
Wednesday
 
Sunny, with a high near 91.
Wednesday Night
 
A 30 percent chance of showers. Mostly cloudy, with a low around 70.
Thursday
 
A 40 percent chance of showers. Partly sunny, with a high near 83.
Thursday Night
 
A 40 percent chance of showers. Mostly cloudy, with a low around 65.
Friday
 
Mostly sunny, with a high near 80.

 

Forecast from NOAA-NWS for New Haven CT.

Weather Forecast Discussion
017
FXUS61 KOKX 260606
AFDOKX

Area Forecast Discussion
National Weather Service New York NY
206 AM EDT Sat Jul 26 2025

.SYNOPSIS...
High pressure remains over the area through early Sunday. A weak
frontal system then approaches Sunday. High pressure returns to
the area for Monday into Tuesday. A cold front approaches from
the west on Tuesday afternoon and moves offshore Tuesday
evening. A second cold front follows late Wednesday into early
Thursday with high pressure returning to end the week.


&&

.NEAR TERM /THROUGH TODAY/...
The cold front is pushing offshore this morning and winds have
shifted north/northwest as high pressure builds to the north. As a
result, a drier airmass continues to work into the region bringing
dewpoints some 5-10 degrees lower than on Friday. Dry conditions are
expected for the day with a bit more comfortable temperatures and
humidity levels, with highs in the mid 80s for most, and the upper
80s for the urban corridor. Given the lower dewpoints, heat indices
today will be near the actual temperature.

High clouds will be on the increase this afternoon into this evening
in advance of the next frontal system to impact the area Sunday.

&&

.SHORT TERM /TONIGHT THROUGH MONDAY/...
Weak upper ridging becomes more of a zonal flow aloft as a shortwave
approaches from the west. Aforementioned surface high pressure is
slow to move east Sunday morning as a trough/warm front and
associated low pressure system approach from the west. Precip
chances thus increase on Sunday morning from west to east as the
front slides near the area. Instability per BUFKIT soundings looks
weak in the AM, so any thunder looks isolated initially. Mid and low
level dry air also looks to remain entrenched for at least part of
Sunday AM, so precip may have some difficulty initially. Model
soundings do show an appreciable increase in PWAT, with over 2" by
Sunday afternoon along with a modest increase in instability (MUCAPE
500-1000J) and shear (0-6km shear values ~30kts) with the
approaching shortwave. SPC maintains a marginal risk of severe
thunderstorms for the area on Sunday.

With cloud cover around, highs will be mainly in the low 80s, with a
more humid feel as dewpoints rebound into the low 70s by Sunday
evening under the southerly flow.

An increase in heat and humidity on Monday as weak ridging builds
back in behind the departing shortwave. Dry weather is expected.
However, h850 temperatures approach 20-21C Monday afternoon with
dewpoint in the mid 70s (per NBM). Thus, heat indices of 100-105 for
northeast NJ and 95-100 elsewhere look possible once again.

&&

.LONG TERM /MONDAY NIGHT THROUGH FRIDAY/...
The NBM was followed with no changes.

Key Points:

* High heat and humidity will continue on Tuesday, potentially
  lingering into Wednesday. The peak of the heat currently looks to
  occur on Tuesday with max heat index values 100 to around 105F.
  Wednesdays heat index values remain below 100.

* A few showers and thunderstorms are possible Tuesday afternoon and
  evening with a weak cold front. The threat for showers and
  thunderstorms continues Wednesday, potentially lingering into
  Thursday as a stronger cold front moves into the area.

* Temperatures trend down to end the week with potential of below
  normal temperatures. Humidity levels also should be much lower
  than the first half of the week.

&&

.AVIATION /06Z SATURDAY THROUGH WEDNESDAY/...
High pressure briefly builds into the region today. A warm front
approaches the area from the west tonight.

Winds will start off from the north around 10 kt or less. Winds will
veer into Saturday becoming SE by afternoon 7-10 kt. Tonight, winds
become light at most terminals from the south.

 ...NY Metro (KEWR/KLGA/KJFK/KTEB) TAF Uncertainty...

Timing of winds veering today may vary by 1-2 hours.

.OUTLOOK FOR 06Z SUNDAY THROUGH WEDNESDAY...

Saturday night - Sunday: Mainly VFR. MVFR or lower possible in
any showers or thunderstorms.

Monday: VFR.

Tuesday - Wednesday: Mainly VFR with possible MVFR or lower in
showers and thunderstorms each afternoon.

Detailed information, including hourly TAF wind component forecasts,
can be found at: https:/www.weather.gov/zny/n90
.OUTLOOK FOR 00Z SUNDAY THROUGH WEDNESDAY...

Saturday night - Sunday: Mainly VFR. MVFR or lower possible in
any showers or thunderstorms.

Monday: VFR.

Tuesday - Wednesday: Mainly VFR with possible MVFR or lower in
showers and thunderstorms each afternoon.

Detailed information, including hourly TAF wind component forecasts,
can be found at: https:/www.weather.gov/zny/n90

&&

.MARINE...
A brief period of 20 kt gusts are possible in wake of a frontal
passage Saturday night into Sunday morning. Otherwise, sub SCA
conditions are likely through Monday. A relatively weak pressure gradient Tuesday
through the end of the week will lead to conditions staying
below SCA levels.

&&

.HYDROLOGY...
Showers and thunderstorms associated with a frontal system could
produce locally heavy downpours on Sunday that result in nuisance
flooding. WPC maintains a marginal risk of excessive rainfall, but
the overall widespread flood threat appears low at this time.

There are currently no hydrologic concerns next week.

&&

.TIDES/COASTAL FLOODING...
A moderate rip current risk continues for Saturday with a
mixture of lingering 1 to 2 ft S wind swell and a developing 3
ft wind wave.

A moderate rip current risk continues for Sunday with 1 to 2 ft
E wind wave and residual 1ft S/SE wind swell.

&&

.OKX WATCHES/WARNINGS/ADVISORIES...
CT...None.
NY...None.
NJ...None.
MARINE...None.

&&

$$

SYNOPSIS...BC/DBR
NEAR TERM...DBR
SHORT TERM...DBR
LONG TERM...
AVIATION...BC
MARINE...BC/DBR
HYDROLOGY...BC/DBR
TIDES/COASTAL FLOODING...
CLIMATE...
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Forecast Discussion from: NOAA-NWS Script developed by: El Dorado Weather






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