Princeton (NJ)
May
Weather in Princeton, New Jersey for May 2026
Your guide to Princeton weather in May - trends and predictions
In general, the average temperature in Princeton at the beginning of May is 20.4 °F. As the month progressed, temperatures tended to moderately rise, reaching an average of 22.1 °F by the end of May.
Princeton in May brings notable rainfall, with an average of 17 rainy days and a total precipitation of 104.9 mm.
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Temperatures
Rain 🌧️
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14
Dry days
17
Rainy days
0
Snow days
21°/12°
Temperatures
15 km/h
Avg max wind
77 %
Avg humidity
Princeton Weather May
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Temperatures trend during May in Princeton
See the weather trend as well as the moving average line
May weather in Princeton day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| May 1 |  Light drizzle | 19° /9° | 0.4 mm | 4 | |
| May 2 |  Cloudy | 26° /11° | 0 mm | 6 | |
| May 3 |  Partly cloudy | 24° /14° | 1.6 mm | 6 | |
| May 4 | Light drizzle | 18° /12° | 6.1 mm | 4 | |
| May 5 | Light rain | 15° /11° | 25.6 mm | 4 | |
| May 6 | Light drizzle | 20° /13° | 31.2 mm | 5 | |
| May 7 |  Light rain shower | 21° /14° | 6.6 mm | 5 | |
| May 8 |  Patchy light rain with thunder | 24° /14° | 7.1 mm | 6 | |
| May 9 | Patchy rain possible | 17° /11° | 59 mm | 4 | |
| May 10 | Light rain shower | 17° /8° | 4.8 mm | 5 | |
| May 11 | Patchy rain possible | 18° /9° | 0.1 mm | 5 | |
| May 12 | Light rain shower | 17° /9° | 4.1 mm | 4 | |
| May 13 | Patchy rain possible | 20° /10° | 2.9 mm | 5 | |
| May 14 | Light rain shower | 17° /12° | 28.9 mm | 4 | |
| May 15 | Light drizzle | 19° /14° | 1.5 mm | 5 | |
| May 16 | Light rain | 19° /14° | 4.1 mm | 5 | |
| May 17 |  Overcast | 23° /16° | 1 mm | 5 | |
| May 18 | Partly cloudy | 21° /13° | 0 mm | 6 | |
| May 19 | Patchy rain possible | 22° /11° | 0 mm | 6 | |
| May 20 |  Mist | 20° /9° | 0 mm | 5 | |
| May 21 |  Sunny | 20° /11° | 23.8 mm | 5 | |
| May 22 | Patchy rain possible | 20° /12° | 14.3 mm | 5 | |
| May 23 | Patchy light rain | 20° /12° | 1.4 mm | 5 | |
| May 24 | Sunny | 22° /11° | 0 mm | 6 | |
| May 25 | Patchy rain possible | 23° /11° | 0 mm | 5 | |
| May 26 | Patchy light rain | 24° /14° | 4.3 mm | 5 | |
| May 27 | Light rain shower | 21° /14° | 13.8 mm | 5 | |
| May 28 | Partly cloudy | 20° /13° | 20.2 mm | 5 | |
| May 29 | Light rain shower | 23° /12° | 5.4 mm | 5 | |
| May 30 | Light rain shower | 22° /14° | 42.3 mm | 5 | |
| May 31 | Cloudy | 22° /11° | 30.1 mm | 5 | |
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Important Notice
Our weather forecast for Princeton 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 Princeton forecast closer to your planned date for the most up-to-date weather information.
Change Month
Princeton in May - FAQ
What are the expected maximum and minimum temperatures in Princeton during May?
Enjoy moderate daytime temperatures of up to 21° and cooler nights around 12°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in Princeton during May?
Significant rainfall exceeding 104.9 mm is expected in Princeton during May, occurring over more than 17 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in Princeton during May?
The average wind speed in Princeton during May is 15 km/h, suggesting breezy to windy conditions, depending on your activities.
May rainfall patterns in Princeton
Explore the daily rainfall trends and prepare for Princetons May weather 💧
UV exposure in Princeton during May
Stay informed about UV levels for safe outdoor activities throughout the month of May ☀️
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