Princeton Rainfall Forecast

Today 6 Sep
80%
Sun 7 Sep
80%
Mon 8 Sep
No Rain
Tue 9 Sep
No Rain
Wed 10 Sep
20%
Thu 11 Sep
5%
Fri 12 Sep
No Rain

Princeton Rainfall Statistics

September Rainfall

Trenton, Mercer County Airport (9.3 miles)

Total Rainfall 2025
25.1in
Daily Average 2025
0.1in
Wettest Day 14 May, 2025
2in
Wet Days 2025
88/249 (35%)
Total Rainfall August
0.8in
Daily Average August
0.03in
Wettest Day 17 August, 2025
0.5in
Wet Days August
4/31 (13%)
Total Rainfall September
0.3in
Daily Average September
0.1in
Wettest Day 4 September, 2025
0.3in
Wet Days September
1/6 (17%)

Climate (2010–Present)

Trenton, Mercer County Airport (9.3 miles)

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Annual Average 2020–2024
42.8in
Monthly Average 2020–2025
3.5in
Daily Average 2020–2025
0.1in
Wettest Day 1 September, 2021
5.6in

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