United States · 1991–2020

Best time to visit
Clark.

September leads for comfortable weather in Clark: typically 25.6°C by day, 13.2°C at night, with 116 mm of rain. Based on measured 1991–2020 NOAA station history.

Best comfortSeptember

Typical high25.6°C

Typical low13.2°C

Rain in September116 mm

Comfort

September

September · May · June

76climate match

Beach

August

August · July · June

70climate match

Outdoors

October

October · May · April

73climate match

The weakest month is January, scoring 5 against September’s 76 — days reach only 5.1°C, 19° 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

55.1° / -5.3°

Feb

56.7° / -4.7°

Mar

1311.3° / -0.9°

Apr

4617.9° / 4.5°

May

7222.9° / 9.9°

Jun

6927.9° / 15.4°

Jul

5530.5° / 18.2°

Aug

6229.7° / 17.3°

Sep

7625.6° / 13.2°

Oct

5419.3° / 6.4°

Nov

3013.5° / 1.7°

Dec

57.9° / -2.3°

Monthly climate evidence for Clark — daylight is calculated from latitude, everything else is measured, sea temperature from the nearest open water 37 km away
Month	Day	Night	Rain	Wet days	Sea	Daylight	Comfort	Coverage
January	5.1°C	-5.3°C	92 mm	8.5	6.0°C	9 h 34	5	Good coverage
February	6.7°C	-4.7°C	81 mm	7.4	4.3°C	10 h 35	5	Good coverage
March	11.3°C	-0.9°C	114 mm	8.6	4.8°C	11 h 49	13	Good coverage
April	17.9°C	4.5°C	102 mm	9.2	7.9°C	13 h 14	46	Good coverage
May	22.9°C	9.9°C	101 mm	9.5	12.6°C	14 h 25	72	Good coverage
June	27.9°C	15.4°C	122 mm	9.3	18.1°C	15 h 04	69	Good coverage
July	30.5°C	18.2°C	124 mm	8.6	22.2°C	14 h 49	55	Good coverage
August	29.7°C	17.3°C	107 mm	8.2	23.1°C	13 h 47	62	Good coverage
September	25.6°C	13.2°C	116 mm	7.4	21.4°C	12 h 25	76	Good coverage
October	19.3°C	6.4°C	111 mm	8	17.3°C	11 h 03	54	Good coverage
November	13.5°C	1.7°C	92 mm	7.3	12.7°C	9 h 52	30	Good coverage
December	7.9°C	-2.3°C	111 mm	8.2	9.0°C	9 h 17	5	Good coverage

Records at CRANFORD, 1969–2016
Month	Record high	Record low	Wettest day	Wettest / driest month	Years
January	22.8°C7 Jan 2007	-23.3°C21 Jan 1985	70 mm4 Jan 1982	244 mm1979 · driest 0 mm in 2016	46
February	23.9°C24 Feb 1985	-21.1°C12 Feb 1979	158 mm17 Feb 2003	268 mm2003 · driest 16 mm in 2009	47
March	32.2°C31 Mar 1998	-17.2°C8 Mar 1986	130 mm14 Mar 2010	307 mm2010 · driest 18 mm in 2006	46
April	36.1°C18 Apr 2002	-11.1°C6 Apr 1995	134 mm16 Apr 2007	318 mm2007 · driest 29 mm in 1985	46
May	35.6°C21 May 1996	-4.4°C4 May 1986	86 mm1 May 2014	252 mm1984 · driest 37 mm in 1993	46
June	36.7°C22 Jun 1988	0.0°C12 Jun 1979	101 mm29 Jun 1973	238 mm2003 · driest 15 mm in 1999	46
July	40.0°C7 Jul 2010	5.6°C5 Jul 1979	179 mm25 Jul 1997	355 mm1975 · driest 15 mm in 2002	46
August	39.4°C10 Aug 2001	3.9°C30 Aug 1986	171 mm2 Aug 1973	270 mm1971 · driest 23 mm in 1995	43
September	37.2°C10 Sep 1983	0.6°C24 Sep 1974	248 mm17 Sep 1999	343 mm1999 · driest 30 mm in 1972	44
October	31.1°C9 Oct 2007	-5.6°C23 Oct 1982	142 mm20 Oct 1996	352 mm2005 · driest 20 mm in 2000	45
November	27.2°C4 Nov 2003	-10.0°C30 Nov 1976	90 mm8 Nov 1977	285 mm1972 · driest 12 mm in 1976	44
December	24.4°C8 Dec 1998	-20.6°C26 Dec 1980	70 mm12 Dec 2008	287 mm1983 · driest 15 mm in 1989	44

Typical days per month at CRANFORD, 1991–2020
Month	Days 25°C+	Days 30°C+	Frost nights	Heavy rain (10 mm+)	Snow days
January	0	0	26	3	3
February	0	0	23	2	3
March	<1	0	19	4	2
April	4	1	5	3	<1
May	11	3	<1	3	0
June	23	10	0	4	0
July	29	18	0	4	0
August	28	15	0	3	0
September	17	5	0	3	0
October	4	<1	3	3	0
November	<1	0	13	3	<1
December	0	0	21	4	2

How often, not how much — every day in CRANFORD’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%	27%	11%	30%	1.5–7.9°C
February	<1%	26%	9%	26%	3.7–9.9°C
March	8%	28%	12%	33%	8.6–14.1°C
April	27%	29%	11%	35%	16.1–19.5°C
May	55%	32%	12%	42%	21.3–25.0°C
June	68%	31%	12%	37%	25.6–29.5°C
July	72%	28%	12%	31%	28.7–32.4°C
August	73%	27%	11%	29%	28.2–31.5°C
September	69%	25%	11%	27%	24.3–27.0°C
October	36%	24%	10%	24%	17.6–21.2°C
November	8%	26%	12%	27%	10.9–15.6°C
December	1%	27%	12%	30%	4.3–10.2°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.

1969Each stripe is one year’s mean temperature against the 41-year average. Warmest: 1991. Coolest: 1978.2014

The evidence behind this page

Nearby, measured,
and named.

Place identity: GeoNames 5096655
NOAA station: USC00282023 · CRANFORD
Station distance: 4.2 km from the place centre
Climate period: 1991–2020
Minimum month coverage: 22 usable years
Daylight: Calculated from latitude 40.63°, mid-month, sunrise to sunset including refraction. Not a station measurement.
Sea temperature: NOAA OISST v2.1 1991–2020 monthly climatology, nearest open water 37 km from the place centre. A sheltered bay can run warmer than the open sea it is measured from.
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 CRANFORD is what differs

Union→Linden→Westfield→Rahway→Scotch Plains→Cranford→

Or put two places side by side: Clark vs Union

Best time to visitClark.