United States · 1991–2020

Best time to visit
Trenton.

October leads for comfortable weather in Trenton: typically 24.3°C by day, 9.7°C at night, with 78 mm of rain. Based on measured 1991–2020 NOAA station history.

Best comfortOctober

Typical high24.3°C

Typical low9.7°C

Rain in October78 mm

Comfort

October

October · April · May

81climate match

Beach

September

September · May · July

68climate match

Outdoors

October

October · November · April

76climate match

The weakest month is January, scoring 21 against October’s 81 — days reach only 13°C, 11° below the 24°C the score treats as ideal, and nights drop to -0.4°C.

Month by month

The whole year,
without the guesswork.

The bars show the comfort score. Day and night temperatures come from daily observed highs and lows; rain is the historical monthly estimate.

Jan

2113° / -0.4°

Feb

3215.1° / 0.7°

Mar

4919.5° / 4.4°

Apr

7824.3° / 8.5°

May

7228.7° / 13.5°

Jun

5132.2° / 17.9°

Jul

4234° / 19.8°

Aug

4632.9° / 19.2°

Sep

6629.7° / 16.1°

Oct

8124.3° / 9.7°

Nov

5418.9° / 4.1°

Dec

2814.4° / 0.9°

Monthly climate evidence for Trenton — daylight is calculated from latitude, everything else is measured
Month	Day	Night	Rain	Wet days	Daylight	Comfort	Coverage
January	13°C	-0.4°C	104 mm	8.7	10 h 08	21	Strong coverage
February	15.1°C	0.7°C	92 mm	8	10 h 55	32	Strong coverage
March	19.5°C	4.4°C	118 mm	8.5	11 h 52	49	Strong coverage
April	24.3°C	8.5°C	79 mm	6.8	12 h 59	78	Strong coverage
May	28.7°C	13.5°C	82 mm	6.4	13 h 53	72	Strong coverage
June	32.2°C	17.9°C	123 mm	8.4	14 h 23	51	Strong coverage
July	34°C	19.8°C	113 mm	8.5	14 h 11	42	Strong coverage
August	32.9°C	19.2°C	121 mm	8.6	13 h 24	46	Strong coverage
September	29.7°C	16.1°C	107 mm	6.8	12 h 20	66	Strong coverage
October	24.3°C	9.7°C	78 mm	5.6	11 h 17	81	Strong coverage
November	18.9°C	4.1°C	84 mm	6.3	10 h 22	54	Strong coverage
December	14.4°C	0.9°C	107 mm	8.6	9 h 55	28	Strong coverage

What has changed

Trenton runs +1.1°C
on the 1961–1990 baseline.

Each bar compares the 2011–2025 daytime average for that month against the same month in 1961–1990, measured at the same station. Months where the older record is too thin to compare are left blank.

Jan

+1.6

Feb

+2.3

Mar

+1.5

Apr

+1.0

May

+0.8

Jun

+0.9

Jul

+1.1

Aug

+0.5

Sep

+0.8

Oct

+1.0

Nov

0.0

Dec

+2.1

October daytime highs, 2011–2024. Last recorded: 24.9°C.

Records at JOHNSTON 4 SW, 1957–2025
Month	Record high	Record low	Wettest day	Wettest / driest month	Years
January	27.2°C13 Jan 2013	-18.9°C22 Jan 1985	89 mm21 Jan 1979	232 mm1974 · driest 18 mm in 2004	67
February	28.3°C17 Feb 1989	-13.3°C18 Feb 1958	85 mm11 Feb 1995	216 mm1985 · driest 30 mm in 1978	64
March	31.7°C26 Mar 2007	-17.2°C3 Mar 1980	99 mm2 Mar 2007	307 mm1980 · driest 19 mm in 2019	67
April	34.4°C21 Apr 2002	-7.2°C9 Apr 2007	94 mm1 Apr 1961	334 mm1961 · driest 14 mm in 1986	68
May	37.8°C28 May 2000	1.1°C5 May 2004	118 mm22 May 2003	214 mm2003 · driest 12 mm in 2000	68
June	41.1°C15 Jun 1958	7.8°C10 Jun 1998	130 mm28 Jun 1994	403 mm1965 · driest 5 mm in 1993	67
July	43.9°C1 Jul 2012	11.1°C23 Jul 2007	102 mm17 Jul 2017	317 mm1975 · driest 4 mm in 1980	67
August	43.3°C11 Aug 2007	7.8°C30 Aug 1969	161 mm30 Aug 1964	292 mm1964 · driest 4 mm in 2017	67
September	40.6°C7 Sep 1999	2.2°C30 Sep 1967	136 mm4 Sep 1998	312 mm1959 · driest 4 mm in 1985	66
October	35.6°C4 Oct 2019	-4.4°C27 Oct 2001	128 mm2 Oct 1985	310 mm1990 · driest 0 mm in 2024	67
November	31.7°C3 Nov 1961	-9.4°C24 Nov 1970	100 mm11 Nov 2009	171 mm1976 · driest 12 mm in 2021	64
December	27.2°C7 Dec 1998	-16.1°C13 Dec 1962	83 mm24 Dec 2014	237 mm2013 · driest 17 mm in 1988	67

Typical days per month at JOHNSTON 4 SW, 1991–2020
Month	Days 25°C+	Days 30°C+	Frost nights	Heavy rain (10 mm+)
January	<1	0	17	3
February	<1	0	14	3
March	6	<1	8	4
April	15	4	1	3
May	26	13	0	2
June	29	23	0	3
July	31	29	0	3
August	30	26	0	4
September	26	16	0	3
October	15	3	1	2
November	4	<1	8	3
December	1	0	15	4

How often, not how much — every day in JOHNSTON 4 SW’s record sorted by what it was actually like, rather than averaged
Month	Warm & dry days	Wet days	Washouts	Week with 3+ wet days	Daytime mean has ranged
January	8%	29%	12%	30%	9.2–15.6°C
February	16%	29%	13%	34%	11.3–17.4°C
March	36%	28%	13%	28%	16.0–21.4°C
April	63%	23%	10%	22%	21.7–26.1°C
May	76%	22%	9%	21%	25.6–30.2°C
June	73%	27%	12%	32%	29.0–33.8°C
July	70%	30%	13%	35%	30.9–35.5°C
August	73%	28%	12%	31%	30.1–34.3°C
September	76%	23%	9%	22%	27.3–31.1°C
October	71%	17%	7%	15%	22.2–25.6°C
November	38%	21%	9%	17%	16.9–21.1°C
December	12%	26%	11%	31%	11.4–16.7°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.

1958Each stripe is one year’s mean temperature against the 58-year average. Warmest: 2017. Coolest: 1979.2024

The evidence behind this page

Nearby, measured,
and named.

Place identity: GeoNames 4598889
NOAA station: USC00384607 · JOHNSTON 4 SW
Station distance: 3.8 km from the place centre
Climate period: 1991–2020
Minimum month coverage: 27 usable years
Daylight: Calculated from latitude 33.74°, mid-month, sunrise to sunset including refraction. Not a station measurement.
Important limit: Historical climate is not a forecast. Nearby stations can miss mountains, coasts, and local microclimates.

These places read the same station, so their numbers are identical — distance from JOHNSTON 4 SW is what differs

Edgefield→Johnston→Ward→Antioch→Baynham (historical)→Bouknight→

Or put two places side by side: Trenton vs Edgefield

Best time to visitTrenton.

October

September

October

The whole year,without the guesswork.

Trenton runs +1.1°Con the 1961–1990 baseline.

Nearby, measured,and named.

Best time to visit
Trenton.

The whole year,
without the guesswork.

Trenton runs +1.1°C
on the 1961–1990 baseline.

Nearby, measured,
and named.