Mercer County (Princeton)
March
Weather in Mercer County, New Jersey for March 2026
Your guide to Mercer County weather in March - trends and predictions
Until now, March 2026 in Mercer County is slightly cooler than the historical average by -1.9 °F.
Expect cooler weather in the next days in Mercer County with the forecast suggesting a temperature of 9.5 °F, lower than the historical average.
In general, the average temperature in Mercer County at the beginning of March is 7.6 °F. As the month progressed, temperatures tended to noticeably warm up, reaching an average of 9.9 °F by the end of March.
The climate of Mercer County in March is notably wet, with an average of 11 rainy days, and a total of 151.1 mm of precipitation.
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Temperatures
Rain 🌧️
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20
Dry days
11
Rainy days
0
Snow days
11°/3°
Temperatures
22 km/h
Avg max wind
67 %
Avg humidity
Mercer County Weather March
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Temperatures trend during March in Mercer County
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March weather in Mercer County day by day
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| Date | Weather | Temperatures | Rain | Snow | More |
|---|---|---|---|---|---|
| Mar. 1 |  Overcast | 7° /-1° | 0 mm | 0 cm | |
| Mar. 2 |  Sunny | 4° /-4° | 2.1 mm | 0 cm | |
| Mar. 3 |  Cloudy | 7° /-1° | 8.8 mm | 1.6 cm | |
| Mar. 4 | Overcast | 10° /2° | 9.7 mm | 0 cm | |
| Mar. 5 |  Light rain | 8° /4° | 7.5 mm | 0 cm | |
| Mar. 6 | Light rain | 9° /3° | 18.3 mm | 0 cm | |
| Mar. 7 | Overcast | 8° /3° | 0 mm | 0 cm | |
| Mar. 8 | Overcast | 9° /1° | 0 mm | 0 cm | |
| Mar. 9 | Light drizzle | 13° /2° | 0.2 mm | 0 cm | |
| Mar. 10 |  Patchy rain possible | 15° /2° | 3.2 mm | 0 cm | |
| Mar. 11 | Overcast | 15° /2° | 3 mm | 0 cm | |
| Mar. 12 | Overcast | 15° /2° | 0 mm | 0 cm | |
| Mar. 13 | Overcast | 9° /3° | 0 mm | 0 cm | |
| Mar. 14 |  Partly cloudy | 13° /4° | 0 mm | 0 cm | |
| Mar. 15 |  Patchy light rain with thunder | 12° /4° | 1.6 mm | 0 cm | |
| Mar. 16 | Overcast | 16° /7° | 5.2 mm | 0 cm | |
| Mar. 17 | Overcast | 12° /3° | 23.5 mm | 1.6 cm | |
| Mar. 18 | Partly cloudy | 9° /0° | 0 mm | 0 cm | |
| Mar. 19 | Overcast | 10° /1° | 0 mm | 0 cm | |
| Mar. 20 | Patchy rain possible | 13° /3° | 0.5 mm | 0 cm | |
| Mar. 21 | Partly cloudy | 8° /-1° | 5.3 mm | 0 cm | |
| Mar. 22 |  Moderate rain | 16° /4° | 6.3 mm | 0 cm | |
| Mar. 23 |  Heavy rain | 8° /0° | 43.3 mm | 0 cm | |
| Mar. 24 | Sunny | 9° /-2° | 0 mm | 0 cm | |
| Mar. 25 | Overcast | 12° /1° | 0 mm | 0 cm | |
| Mar. 26 | Patchy rain possible | 15° /6° | 3.1 mm | 0 cm | |
| Mar. 27 | Patchy rain possible | 8° /0° | 0.4 mm | 0 cm | |
| Mar. 28 | Sunny | 6° /-3° | 0 mm | 0 cm | |
| Mar. 29 | Sunny | 5° /-2° | 0 mm | 0 cm | |
| Mar. 30 | Sunny | 10° /-4° | 0 mm | 0 cm | |
| Mar. 31 | Patchy rain possible | 13° /5° | 0.6 mm | 0 cm | |
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Important Notice
Our weather forecast for Mercer County in March 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 Mercer County forecast closer to your planned date for the most up-to-date weather information.
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Mercer County in March - FAQ
What are the expected maximum and minimum temperatures in Mercer County during March?
Prepare for cooler days with highs just around 11° and colder nights, dipping below 3°.
How much rainfall should be expected in Mercer County during March?
Significant rainfall exceeding 151.1 mm is expected in Mercer County during March, occurring over more than 11 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in Mercer County during March?
The average wind speed in Mercer County during March is 22 km/h, suggesting breezy to windy conditions, depending on your activities.
Mercer County snow forecast March 2026
Track daily snowfall levels and discover Mercer County’s snowy potential this March ❄️
March rainfall patterns in Mercer County
Explore the daily rainfall trends and prepare for Mercer Countys March weather 💧
Typically, Mercer County has 11 rainy days in March with a total of 151.1 mm of rainfall.
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Where is Mercer County?Get accurate weather forecasts for Mercer County, located at latitude 40.349 and longitude -74.659. Stay updated with localized weather information tailored for Mercer County.
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