October
October · November · April
United States · 1991–2020
October leads for comfortable weather in Trenton: typically 26.9°C by day, 14.3°C at night, with 60 mm of rain. Based on measured 1991–2020 NOAA station history.
October · November · April
May · October · September
November · December · February
The weakest month is August, scoring 23 against October’s 84 — 230 mm of rain falls, and days average 32.1°C, 8° above the 24°C the score treats as ideal.
Month by month
The bars show the comfort score. Day and night temperatures come from daily observed highs and lows; rain is the historical monthly estimate.
| Month | Day | Night | Rain | Wet days | Sea | Daylight | Comfort | Coverage |
|---|---|---|---|---|---|---|---|---|
| January | 18.2°C | 4.1°C | 89 mm | 7.3 | 16.0°C | 10 h 26 | 50 | Good coverage |
| February | 20.3°C | 5.8°C | 86 mm | 6.2 | 16.1°C | 11 h 06 | 61 | Good coverage |
| March | 23.8°C | 8.3°C | 91 mm | 6.3 | 18.5°C | 11 h 54 | 76 | Good coverage |
| April | 26.9°C | 12.2°C | 76 mm | 5.2 | 22.0°C | 12 h 51 | 78 | Good coverage |
| May | 30.4°C | 16.2°C | 83 mm | 5.5 | 25.6°C | 13 h 37 | 68 | Good coverage |
| June | 32°C | 20.5°C | 191 mm | 11.9 | 28.5°C | 14 h 02 | 34 | Good coverage |
| July | 32.3°C | 21.5°C | 217 mm | 14.9 | 29.8°C | 13 h 52 | 25 | Good coverage |
| August | 32.1°C | 21.9°C | 230 mm | 14.9 | 29.8°C | 13 h 12 | 23 | Good coverage |
| September | 30.6°C | 20.2°C | 171 mm | 9.5 | 28.6°C | 12 h 18 | 44 | Good coverage |
| October | 26.9°C | 14.3°C | 60 mm | 5.1 | 25.4°C | 11 h 24 | 84 | Good coverage |
| November | 22.9°C | 8.5°C | 49 mm | 4.4 | 21.1°C | 10 h 38 | 82 | Good coverage |
| December | 19.7°C | 6.1°C | 81 mm | 5.7 | 18.1°C | 10 h 15 | 61 | Good coverage |
| Month | Record high | Record low | Wettest day | Wettest / driest month | Years |
|---|---|---|---|---|---|
| January | 28.3°C9 Jan 2026 | -8.3°C11 Jan 2010 | 102 mm3 Jan 2017 | 154 mm2014 · driest 11 mm in 2013 | 19 |
| February | 30.0°C28 Feb 2001 | -7.2°C7 Feb 2009 | 78 mm24 Feb 2014 | 197 mm2014 · driest 15 mm in 2001 | 18 |
| March | 31.7°C17 Mar 2002 | -6.1°C1 Mar 2002 | 129 mm10 Mar 2025 | 199 mm2001 · driest 12 mm in 2006 | 19 |
| April | 33.3°C29 Apr 2017 | 0.0°C1 Apr 2003 | 64 mm5 Apr 2017 | 135 mm2018 · driest 12 mm in 2000 | 18 |
| May | 40.0°C9 May 2000 | 5.0°C7 May 2017 | 97 mm29 May 2012 | 171 mm2018 · driest 1 mm in 2000 | 19 |
| June | 37.8°C4 Jun 2000 | 13.3°C22 Jun 2003 | 155 mm25 Jun 2012 | 409 mm2012 · driest 85 mm in 2016 | 19 |
| July | 37.8°C12 Jul 2013 | 14.4°C4 Jul 2000 | 168 mm23 Jul 2018 | 392 mm2013 · driest 106 mm in 2007 | 19 |
| August | 36.7°C20 Aug 2004 | 16.1°C9 Aug 2017 | 145 mm23 Aug 2008 | 574 mm2012 · driest 26 mm in 2000 | 19 |
| September | 35.6°C24 Sep 2025 | 11.1°C20 Sep 2017 | 176 mm12 Sep 2017 | 412 mm2004 · driest 3 mm in 2025 | 20 |
| October | 33.9°C7 Oct 2002 | -1.1°C31 Oct 2017 | 64 mm10 Oct 2011 | 139 mm2011 · driest 1 mm in 2001 | 19 |
| November | 30.6°C5 Nov 2015 | -6.7°C22 Nov 2000 | 77 mm17 Nov 2002 | 169 mm2002 · driest 4 mm in 2016 | 18 |
| December | 28.9°C26 Dec 2015 | -8.3°C21 Dec 2000 | 150 mm6 Dec 2016 | 206 mm2005 · driest 13 mm in 2001 | 19 |
| Month | Days 25°C+ | Days 30°C+ | Frost nights | Heavy rain (10 mm+) |
|---|---|---|---|---|
| January | 3 | 0 | 10 | 2 |
| February | 5 | <1 | 6 | 3 |
| March | 14 | 1 | 2 | 3 |
| April | 24 | 5 | <1 | 2 |
| May | 29 | 20 | 0 | 3 |
| June | 29 | 25 | 0 | 6 |
| July | 30 | 27 | 0 | 7 |
| August | 30 | 27 | 0 | 7 |
| September | 28 | 21 | 0 | 4 |
| October | 24 | 6 | <1 | 2 |
| November | 10 | <1 | 2 | 1 |
| December | 6 | 0 | 7 | 2 |
| Month | Warm & dry days | Wet days | Washouts | Week with 3+ wet days | Daytime mean has ranged |
|---|---|---|---|---|---|
| January | 33% | 24% | 9% | 21% | 15.4–21.1°C |
| February | 48% | 22% | 11% | 22% | 18.3–23.2°C |
| March | 67% | 20% | 10% | 19% | 20.5–26.2°C |
| April | 79% | 17% | 7% | 11% | 25.3–28.6°C |
| May | 83% | 18% | 8% | 17% | 28.8–31.4°C |
| June | 61% | 39% | 19% | 56% | 30.4–33.4°C |
| July | 52% | 48% | 22% | 75% | 31.3–33.4°C |
| August | 52% | 49% | 23% | 65% | 30.9–33.5°C |
| September | 69% | 32% | 14% | 36% | 29.7–31.9°C |
| October | 79% | 17% | 6% | 13% | 26.1–27.8°C |
| November | 69% | 14% | 4% | 9% | 20.8–24.9°C |
| December | 42% | 18% | 7% | 15% | 17.3–21.9°C |
A warm and dry day reaches 20°C with under 1 mm of rain; a wet day gets 1 mm or more; a washout gets 10 mm or more. The week column is the share of seven-day stretches in that month, across the station’s whole daily record, that contained three or more wet days — the odds a week-long trip is rained on repeatedly, counted rather than modelled. The last column is the 10th to 90th percentile of that month’s daytime average across individual years: a narrow band means the average is what you will get, a wide one means the average is a midpoint between years that felt quite different.
The evidence behind this page