Princeton Rainfall Forecast

Today 13 Sep
5%
Sun 14 Sep
5%
Mon 15 Sep
5%
Tue 16 Sep
5%
Wed 17 Sep
15%
Thu 18 Sep
30%
Fri 19 Sep
15%

Princeton Rainfall Statistics

September Rainfall

Trenton, Mercer County Airport (9.3 miles)

Total Rainfall 2025
25.8in
Daily Average 2025
0.1in
Wettest Day 14 May, 2025
2in
Wet Days 2025
90/256 (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
1in
Daily Average September
0.1in
Wettest Day 7 September, 2025
0.6in
Wet Days September
3/13 (23%)

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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