Trenton (NJ)
May
Weather in Trenton, New Jersey for May 2026
Your guide to Trenton weather in May - trends and predictions
Until now, May 2026 in Trenton has been nearly identical to the historical average, with a temperature of 21 °F (showing only a slight deviation of -0.3 °F).
The forecast for the coming days of May 2026 predicts a temperature of 26.6 °F , which is warmer than usual.
In general, the average temperature in Trenton at the beginning of May is 21.7 °F. As the month progressed, temperatures tended to moderately rise, reaching an average of 23.4 °F by the end of May.
Trenton in May brings notable rainfall, with an average of 20 rainy days and a total precipitation of 252 mm.
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Temperatures
Rain 🌧️
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11
Dry days
20
Rainy days
0
Snow days
21°/12°
Temperatures
18 km/h
Avg max wind
73 %
Avg humidity
Trenton Weather May
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Temperatures trend during May in Trenton
See the weather trend as well as the moving average line
May weather in Trenton day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| May 1 |  Cloudy | 20° /7° | 0 mm | 9 | |
| May 2 |  Overcast | 21° /11° | 0.1 mm | 6 | |
| May 3 |  Moderate or heavy rain shower | 22° /12° | 5.1 mm | 9 | |
| May 4 | Moderate or heavy rain shower | 23° /13° | 5.8 mm | 6 | |
| May 5 |  Patchy rain possible | 24° /15° | 0.4 mm | 5 | |
| May 6 | Moderate or heavy rain shower | 21° /14° | 4.4 mm | 3 | |
| May 7 | Overcast | 21° /12° | 2.8 mm | 8 | |
| May 8 | Overcast | 21° /10° | 1.6 mm | 9 | |
| May 9 | Moderate or heavy rain shower | 16° /10° | 10.8 mm | 4 | |
| May 10 |  Partly cloudy | 23° /9° | 1.5 mm | 9 | |
| May 11 |  Sunny | 20° /10° | 0.1 mm | 7 | |
| May 12 | Partly cloudy | 22° /9° | 0 mm | 10 | |
| May 13 | Moderate rain at times | 22° /13° | 4.4 mm | 5 | |
| May 14 | Moderate or heavy rain shower | 18° /12° | 11.1 mm | 3 | |
| May 15 | Moderate or heavy rain shower | 20° /11° | 4 mm | 4 | |
| May 16 |  Heavy rain at times | 26° /13° | 1.4 mm | 6 | |
| May 17 | Patchy rain possible | 28° /18° | 0.2 mm | 6 | |
| May 18 | Patchy rain possible | 27° /16° | 0.3 mm | 10 | |
| May 19 | Sunny | 28° /16° | 0 mm | 10 | |
| May 20 | Overcast | 26° /12° | 5.7 mm | 10 | |
| May 21 | Moderate or heavy rain shower | 14° /11° | 10 mm | 2 | |
| May 22 | Moderate or heavy rain shower | 16° /10° | 11.6 mm | 6 | |
| May 23 | Heavy rain at times | 14° /7° | 12.9 mm | 3 | |
| May 24 | Overcast | 16° /9° | 10.6 mm | 6 | |
| May 25 | Cloudy | 19° /8° | 0 mm | 10 | |
| May 26 | Sunny | 28° /15° | 0 mm | 6.4 | |
| May 27 | Patchy rain possible | 27° /18° | 0.5 mm | 3.5 | |
| May 28 | Sunny | 24° /14° | 0 mm | 7.2 | |
| May 29 | Patchy rain possible | 24° /11° | 0.2 mm | 8.1 | |
| May 30 | Sunny | 21° /9° | 0 mm | 1.2 | |
| May 31 | Partly cloudy | 21° /7° | 0 mm | 4 | |
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Important Notice
Our weather forecast for Trenton 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 Trenton forecast closer to your planned date for the most up-to-date weather information.
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Trenton in May - FAQ
What are the expected maximum and minimum temperatures in Trenton 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 Trenton during May?
Significant rainfall exceeding 252 mm is expected in Trenton during May, occurring over more than 20 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in Trenton during May?
The average wind speed in Trenton during May is 18 km/h, suggesting breezy to windy conditions, depending on your activities.
May rainfall patterns in Trenton
Explore the daily rainfall trends and prepare for Trentons May weather 💧
Typically, Trenton has 20 rainy days in May with a total of 252 mm of rainfall.
UV exposure in Trenton during May
Stay informed about UV levels for safe outdoor activities throughout the month of May ☀️
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