Weather Forecast for New Haven

Connecticut, United States of America

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Patchy rain nearby

Current Weather - New Haven: 12°C

Connecticut, United States of America

Patchy rain nearby

Feels like 7°C

Wind

28 km/h WNW

Humidity

58%

Pressure

1008 mb

UV Index

1

Visibility

10 km

Sunny

Sunny

Monday, November 09, 2026

High

12°C

Low

8°C

Rain Chance

18%

Hourly Forecast

Clear 10°C
20:00
Partly Cloudy 9°C
21:00
Clear 9°C
22:00
Clear 8°C
23:00
Nov 10

Day Statistics

Maximum Wind

28 km/h

Humidity

64%

Precipitation

0 mm

UV Index

1

Visibility

10 km

Rain Chance

18%

Snow Chance

0%

Sun & Moon

Sunrise

06:32 AM

Sunset

04:38 PM

Moonrise

07:12 AM

Moonset

04:31 PM

Moon Phase

New Moon

Moon Illumination

0%

Air Quality

PM2.5

3.8

μg/m³

PM10

3.8

μg/m³

NO₂

11.5

μg/m³

O₃

44.4

μg/m³

SO₂

1.4

μg/m³

CO

162.6

μg/m³

US EPA Index: 1 GB DEFRA Index: 1

Solar Radiation Data

Shortwave Radiation

303.2

Diffuse Radiation

201.54

DNI

232.45

GTI

184.01

Weather Alerts

Small Craft Advisory issued November 9 at 2:18AM EST until November 9 at 6:00PM EST by NWS Upton NY

Long Island Sound East of New Haven CT/Port Jefferson NY to the Mouth of the Connecticut River; Long Island Sound West of New Haven CT/Port Jefferson NY; New York Harbor; Peconic and Gardiners Bays; South Shore Bays from Jones Inlet through Shinnecock Bay Nov 9, 02:18 AM - Nov 9, 06:00 PM
Severity: Minor Urgency: Expected

* WHAT...West winds 15 to 20 kt with gusts up to 25 kt and seas 1 to 3 feet. * WHERE...Long Island Sound west of the Orient Point and the Connecticut River, New York Harbor, Peconic and Gardiners Bays, and South Shore Bays from Jones Inlet through Shinnecock Bay. * WHEN...Until 6 PM EST this evening. * IMPACTS...Conditions will be hazardous to small craft.

Event: Small Craft Advisory Certainty: Likely Category: Met

When to visit New Haven?

Plan your perfect trip with our month-by-month weather guide

⭐ Best months: June July August

January

☀️
3°C
💧
16 Days of rain
❄️
Very heavy snowfall
🥶 Coldest month

February

☀️
4°C
💧
15 Days of rain
❄️
Very heavy snowfall

March

☀️
7°C
💧
19 Days of rain
❄️
Very heavy snowfall

April

☀️
12°C
💧
17 Days of rain
❄️
Moderate snowfall

May

☀️
18°C
💧
15 Days of rain
❄️
No snowfall

June

☀️
23°C
💧
15 Days of rain
❄️
No snowfall
⭐ Best time to visit

July

☀️
27°C
💧
12 Days of rain
❄️
No snowfall
⭐ Best time to visit
🔥 Hottest month
🌵 Driest month

August

☀️
27°C
💧
15 Days of rain
❄️
No snowfall
⭐ Best time to visit

September

☀️
23°C
💧
16 Days of rain
❄️
No snowfall

October

☀️
18°C
💧
19 Days of rain
❄️
Light snow possible

November

☀️
12°C
💧
16 Days of rain
❄️
Moderate snowfall

December

☀️
6°C
💧
20 Days of rain
❄️
Very heavy snowfall
🌧 Wettest month,