New Haven (CT)
May
Weather in New Haven, Connecticut for May 2026
Your guide to New Haven weather in May - trends and predictions
In general, the average temperature in New Haven at the beginning of May is 18.4 °F. As the month progressed, temperatures tended to moderately rise, reaching an average of 19.6 °F by the end of May.
New Haven in May brings notable rainfall, with an average of 16 rainy days and a total precipitation of 246.8 mm.
New! Chat with our AI weatherman - it’s amazing and free.
Temperatures
Rain 🌧️
More
15
Dry days
16
Rainy days
0
Snow days
19°/12°
Temperatures
18 km/h
Avg max wind
81 %
Avg humidity
New Haven Weather May
Move between months or click on a day
Temperatures trend during May in New Haven
See the weather trend as well as the moving average line
May weather in New Haven day by day
Click on a date for more information
| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| May 1 |  Partly cloudy | 17° /8° | 0 mm | 5 | |
| May 2 |  Overcast | 23° /10° | 0.1 mm | 5 | |
| May 3 |  Moderate or heavy rain shower | 22° /12° | 2.6 mm | 5 | |
| May 4 |  Heavy rain at times | 18° /13° | 8 mm | 4 | |
| May 5 | Moderate or heavy rain shower | 15° /11° | 23.2 mm | 4 | |
| May 6 | Moderate or heavy rain shower | 15° /11° | 54.7 mm | 4 | |
| May 7 | Overcast | 19° /12° | 0 mm | 4 | |
| May 8 | Heavy rain at times | 19° /11° | 3.9 mm | 4 | |
| May 9 | Moderate or heavy rain shower | 14° /10° | 29.5 mm | 3 | |
| May 10 | Moderate rain at times | 19° /9° | 2 mm | 4 | |
| May 11 | Partly cloudy | 20° /11° | 0 mm | 6 | |
| May 12 |  Sunny | 19° /9° | 0 mm | 5 | |
| May 13 | Overcast | 17° /12° | 0 mm | 4 | |
| May 14 | Moderate rain at times | 17° /11° | 8.6 mm | 4 | |
| May 15 | Moderate or heavy rain shower | 17° /13° | 7.5 mm | 4 | |
| May 16 |  Fog | 17° /13° | 13.5 mm | 4 | |
| May 17 | Fog | 17° /14° | 0 mm | 4 | |
| May 18 | Overcast | 17° /14° | 0 mm | 4 | |
| May 19 |  Cloudy | 18° /9° | 0 mm | 4 | |
| May 20 | Partly cloudy | 15° /7° | 0 mm | 5 | |
| May 21 | Sunny | 17° /11° | 7.6 mm | 5 | |
| May 22 | Sunny | 17° /10° | 30.9 mm | 4 | |
| May 23 | Heavy rain at times | 17° /10° | 18.9 mm | 4 | |
| May 24 | Sunny | 20° /11° | 0 mm | 5 | |
| May 25 | Overcast | 20° /11° | 0 mm | 5 | |
| May 26 | Moderate rain at times | 21° /13° | 0.4 mm | 5 | |
| May 27 | Moderate or heavy rain shower | 18° /12° | 35 mm | 4 | |
| May 28 |  Patchy rain possible | 20° /14° | 1.2 mm | 5 | |
| May 29 | Patchy rain possible | 20° /12° | 11.6 mm | 5 | |
| May 30 | Moderate rain at times | 18° /12° | 9 mm | 4 | |
| May 31 | Cloudy | 20° /9° | 0 mm | 5 | |
| Next | |||||
Important Notice
Our weather forecast for New Haven in May is based on the analysis of historical data rather than real-time forecast models. While this provides a general overview, weather conditions can change. We recommend that you check the New Haven forecast closer to your planned date for the most up-to-date weather information.
Change Month
New Haven in May - FAQ
What are the expected maximum and minimum temperatures in New Haven during May?
Enjoy moderate daytime temperatures of up to 19° and cooler nights around 12°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in New Haven during May?
Significant rainfall exceeding 246.8 mm is expected in New Haven during May, occurring over more than 16 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in New Haven during May?
The average wind speed in New Haven during May is 18 km/h, suggesting breezy to windy conditions, depending on your activities.
May rainfall patterns in New Haven
Explore the daily rainfall trends and prepare for New Havens May weather 💧
UV exposure in New Haven during May
Stay informed about UV levels for safe outdoor activities throughout the month of May ☀️
Quick links
More New Haven weather pages
You are here
Where is New Haven?Get accurate weather forecasts for New Haven, located at latitude 41.308 and longitude -72.928. Stay updated with localized weather information tailored for New Haven.
Found a mistake?
We appreciate your attention to details. Tell us here.