United States · 1991–2020

Best time to visit
Robertsville.

September leads for comfortable weather in Robertsville: typically 25.6°C by day, 13.7°C at night, with 100 mm of rain. Based on measured 1991–2020 NOAA station history.

Best comfortSeptember

Typical high25.6°C

Typical low13.7°C

Rain in September100 mm

Comfort

September

September · June · May

79climate match

Beach

July

July · August · June

70climate match

Outdoors

October

October · May · April

75climate match

The weakest month is January, scoring 5 against September’s 79 — days reach only 5.5°C, 18° 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

55.5° / -4.9°

Feb

56.8° / -3.8°

Mar

1411° / 0°

Apr

4717.3° / 5.2°

May

7122.4° / 10.6°

Jun

7227.3° / 15.7°

Jul

5630.3° / 18.7°

Aug

6229.2° / 17.7°

Sep

7925.6° / 13.7°

Oct

5619.2° / 7°

Nov

3213.6° / 2.3°

Dec

58.3° / -2°

Monthly climate evidence for Robertsville — daylight is calculated from latitude, everything else is measured, sea temperature from the nearest open water 35 km away
Month	Day	Night	Rain	Wet days	Sea	Daylight	Comfort	Coverage
January	5.5°C	-4.9°C	93 mm	8.5	6.2°C	9 h 35	5	Strong coverage
February	6.8°C	-3.8°C	81 mm	7.6	4.5°C	10 h 36	5	Strong coverage
March	11°C	0°C	113 mm	8.6	4.9°C	11 h 49	14	Strong coverage
April	17.3°C	5.2°C	91 mm	8.9	7.9°C	13 h 13	47	Strong coverage
May	22.4°C	10.6°C	103 mm	9.6	12.6°C	14 h 24	71	Strong coverage
June	27.3°C	15.7°C	109 mm	9.5	18.1°C	15 h 02	72	Strong coverage
July	30.3°C	18.7°C	117 mm	8	22.4°C	14 h 47	56	Strong coverage
August	29.2°C	17.7°C	115 mm	8.6	23.2°C	13 h 46	62	Strong coverage
September	25.6°C	13.7°C	100 mm	7.1	21.5°C	12 h 25	79	Strong coverage
October	19.2°C	7°C	103 mm	7.7	17.5°C	11 h 04	56	Strong coverage
November	13.6°C	2.3°C	84 mm	7	12.9°C	9 h 53	32	Strong coverage
December	8.3°C	-2°C	115 mm	8.9	9.3°C	9 h 18	5	Strong coverage

What has changed

Robertsville runs +1.6°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

+2.5

Feb

+3.1

Mar

+1.7

Apr

+1.6

May

+0.6

Jun

+1.0

Jul

+2.0

Aug

+1.1

Sep

+1.3

Oct

+1.2

Nov

+0.7

Dec

+2.2

September daytime highs, 2011–2025. Last recorded: 25.1°C.

Records at FREEHOLD-MARLBORO, 1881–2026
Month	Record high	Record low	Wettest day	Wettest / driest month	Years
January	22.8°C26 Jan 1950	-25.6°C28 Jan 1935	72 mm4 Jan 1999	200 mm1999 · driest 5 mm in 1894	102
February	26.1°C22 Feb 2018	-28.9°C9 Feb 1934	78 mm6 Feb 1896	166 mm2018 · driest 3 mm in 1934	104
March	31.1°C31 Mar 1998	-18.9°C19 Mar 1967	79 mm29 Mar 1984	266 mm2010 · driest 1 mm in 1903	103
April	35.0°C18 Apr 2002	-8.3°C7 Apr 1982	74 mm16 Apr 2007	240 mm2007 · driest 9 mm in 1899	103
May	35.6°C22 May 1941	-2.2°C16 May 2016	115 mm29 May 1968	283 mm1984 · driest 7 mm in 1939	105
June	37.8°C29 Jun 1934	1.7°C1 Jun 1938	109 mm27 Jun 1938	255 mm1938 · driest 2 mm in 1949	103
July	41.1°C9 Jul 1936	5.6°C28 Jul 1893	131 mm29 Jul 1961	344 mm1897 · driest 7 mm in 1955	104
August	38.9°C2 Aug 1955	5.0°C31 Aug 1976	209 mm28 Aug 2011	507 mm2011 · driest 5 mm in 1964	104
September	37.2°C2 Sep 1953	0.0°C24 Sep 1963	144 mm21 Sep 1938	355 mm2023 · driest 1 mm in 1941	103
October	35.0°C3 Oct 2019	-6.7°C28 Oct 2006	106 mm30 Oct 1973	335 mm2005 · driest 0 mm in 2024	102
November	28.3°C1 Nov 1950	-13.9°C26 Nov 1938	140 mm8 Nov 1977	249 mm2018 · driest 5 mm in 1900	103
December	24.4°C8 Dec 1998	-20.6°C21 Dec 1942	88 mm27 Dec 2012	237 mm2023 · driest 7 mm in 1955	103

Typical days per month at FREEHOLD-MARLBORO, 1991–2020
Month	Days 25°C+	Days 30°C+	Frost nights	Heavy rain (10 mm+)	Snow days
January	0	0	25	3	2
February	<1	0	22	2	2
March	<1	0	16	4	1
April	3	<1	4	3	<1
May	10	3	<1	3	0
June	21	9	0	4	0
July	28	17	0	4	0
August	28	14	0	4	0
September	17	5	0	3	0
October	4	<1	2	3	0
November	<1	0	11	3	0
December	0	0	22	4	1

How often, not how much — every day in FREEHOLD-MARLBORO’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%	26%	10%	28%	0.9–8.1°C
February	<1%	26%	10%	29%	2.1–8.9°C
March	6%	28%	12%	33%	7.3–13.3°C
April	23%	29%	11%	35%	14.4–19.0°C
May	53%	29%	11%	34%	20.1–25.1°C
June	70%	29%	10%	32%	25.1–28.9°C
July	74%	26%	12%	27%	28.0–31.6°C
August	74%	26%	11%	26%	27.2–30.3°C
September	70%	22%	10%	22%	23.3–26.9°C
October	36%	22%	9%	22%	17.3–21.1°C
November	9%	24%	10%	25%	10.4–15.4°C
December	<1%	26%	11%	28%	3.6–9.9°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.

1882Each stripe is one year’s mean temperature against the 86-year average. Warmest: 2020. Coolest: 1882.2025

The evidence behind this page

Nearby, measured,
and named.

Place identity: GeoNames 5103374
NOAA station: USC00283181 · FREEHOLD-MARLBORO
Station distance: 4.8 km from the place centre
Climate period: 1991–2020
Minimum month coverage: 27 usable years
Daylight: Calculated from latitude 40.35°, mid-month, sunrise to sunset including refraction. Not a station measurement.
Sea temperature: NOAA OISST v2.1 1991–2020 monthly climatology, nearest open water 35 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 FREEHOLD-MARLBORO is what differs

Marlboro→West Freehold→Freehold→Colts Neck→Matawan→Strathmore→

Or put two places side by side: Robertsville vs Marlboro

Best time to visitRobertsville.