United States · 1991–2020

Best time to visit
Clinton.

September leads for comfortable weather in Clinton: typically 25°C by day, 13.9°C at night, with 108 mm of rain. Based on measured 1991–2020 NOAA station history.

Best comfortSeptember

Typical high25°C

Typical low13.9°C

Rain in September108 mm

Comfort

September

September · May · June

81climate match

Beach

July

July · August · June

73climate match

Outdoors

May

May · October · April

74climate match

The weakest month is January, scoring 5 against September’s 81 — days reach only 3.4°C, 21° below the 24°C the score treats as ideal.

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

53.4° / -5.4°

Feb

55.2° / -4.5°

Mar

1410° / -0.4°

Apr

4416.8° / 5.1°

May

7322.4° / 10.6°

Jun

7227.1° / 15.8°

Jul

5830° / 18.9°

Aug

6128.8° / 18°

Sep

8125° / 13.9°

Oct

5418.3° / 7.4°

Nov

2812.4° / 2°

Dec

56.2° / -2.3°

Monthly climate evidence for Clinton — daylight is calculated from latitude, everything else is measured
Month	Day	Night	Rain	Wet days	Daylight	Comfort	Coverage
January	3.4°C	-5.4°C	70 mm	7.4	9 h 32	5	Good coverage
February	5.2°C	-4.5°C	64 mm	7	10 h 34	5	Good coverage
March	10°C	-0.4°C	91 mm	8.4	11 h 49	14	Good coverage
April	16.8°C	5.1°C	97 mm	8.6	13 h 14	44	Good coverage
May	22.4°C	10.6°C	92 mm	9.6	14 h 26	73	Good coverage
June	27.1°C	15.8°C	112 mm	9.5	15 h 05	72	Good coverage
July	30°C	18.9°C	109 mm	8.2	14 h 50	58	Good coverage
August	28.8°C	18°C	123 mm	8.9	13 h 48	61	Good coverage
September	25°C	13.9°C	108 mm	7.2	12 h 25	81	Good coverage
October	18.3°C	7.4°C	106 mm	7.4	11 h 02	54	Good coverage
November	12.4°C	2°C	84 mm	7	9 h 50	28	Good coverage
December	6.2°C	-2.3°C	104 mm	8.4	9 h 15	5	Good coverage

Records at CALDWELL ESSEX CO AP, 1999–2026
Month	Record high	Record low	Wettest day	Wettest / driest month	Years
January	21.7°C6 Jan 2007	-18.8°C22 Jan 2025	79 mm9 Jan 2024	168 mm2024 · driest 15 mm in 2025	27
February	26.1°C21 Feb 2018	-19.9°C24 Feb 2015	62 mm13 Feb 2008	165 mm2008 · driest 17 mm in 2009	27
March	28.9°C26 Mar 2021	-17.2°C7 Mar 2003	65 mm28 Mar 2005	232 mm2010 · driest 16 mm in 2006	27
April	35.0°C17 Apr 2002	-5.6°C7 Apr 2002	130 mm15 Apr 2007	252 mm2007 · driest 44 mm in 2013	27
May	35.6°C18 May 2017	-0.5°C1 May 2008	73 mm18 May 2011	224 mm2019 · driest 27 mm in 2015	27
June	38.3°C24 Jun 2025	3.9°C1 Jun 2001	142 mm17 Jun 2001	250 mm2001 · driest 51 mm in 2025	28
July	39.4°C22 Jul 2011	9.4°C3 Jul 2001	79 mm10 Jul 2020	199 mm2021 · driest 8 mm in 1999	28
August	38.3°C9 Aug 2001	8.9°C21 Aug 2000	142 mm28 Aug 2011	411 mm2011 · driest 24 mm in 2025	27
September	35.6°C7 Sep 2023	2.8°C29 Sep 2000	262 mm16 Sep 1999	352 mm1999 · driest 20 mm in 2005	27
October	34.4°C2 Oct 2019	-3.3°C29 Oct 2001	156 mm8 Oct 2005	371 mm2005 · driest 0 mm in 2024	27
November	27.8°C6 Nov 2024	-11.6°C23 Nov 2018	70 mm8 Nov 2006	178 mm2018 · driest 22 mm in 2017	27
December	22.2°C1 Dec 2006	-15.0°C14 Dec 2005	96 mm18 Dec 2023	249 mm2023 · driest 27 mm in 2021	27

Typical days per month at CALDWELL ESSEX CO AP, 1991–2020
Month	Days 25°C+	Days 30°C+	Frost nights	Heavy rain (10 mm+)
January	0	0	26	2
February	0	0	24	2
March	<1	0	18	3
April	4	<1	4	3
May	10	4	0	3
June	22	9	0	4
July	29	17	0	4
August	27	13	0	4
September	16	4	0	3
October	3	0	2	3
November	<1	0	12	3
December	0	0	23	4

How often, not how much — every day in CALDWELL ESSEX CO AP’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	<1%	24%	7%	23%	0.5–7.2°C
February	<1%	25%	6%	28%	1.7–8.7°C
March	7%	27%	9%	33%	7.1–13.9°C
April	25%	29%	10%	38%	14.5–18.8°C
May	52%	32%	11%	44%	20.6–24.4°C
June	67%	31%	11%	40%	26.0–29.2°C
July	72%	28%	12%	31%	27.6–32.1°C
August	71%	29%	12%	33%	27.2–30.6°C
September	70%	24%	10%	25%	23.1–26.8°C
October	34%	24%	10%	25%	17.0–21.3°C
November	8%	23%	10%	23%	10.1–15.0°C
December	<1%	28%	12%	31%	3.5–9.6°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.

2000Each stripe is one year’s mean temperature against the 26-year average. Warmest: 2024. Coolest: 2003.2025

The evidence behind this page

Nearby, measured,
and named.

Place identity: GeoNames 5096708
NOAA station: USW00054743 · CALDWELL ESSEX CO AP
Station distance: 2.7 km from the place centre
Climate period: 1991–2020
Minimum month coverage: 21 usable years
Daylight: Calculated from latitude 40.88°, 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 CALDWELL ESSEX CO AP is what differs

Wayne→Lincoln Park→Fairfield→North Caldwell→Mountain View→Pequannock→

Or put two places side by side: Clinton vs Wayne

Best time to visitClinton.

September

July

May

The whole year,without the guesswork.

Nearby, measured,and named.

Best time to visit
Clinton.

The whole year,
without the guesswork.

Nearby, measured,
and named.