United States · 1991–2020

Best time to visit
Milton.

June leads for comfortable weather in Milton: typically 24.2°C by day, 14.2°C at night, with 116 mm of rain. Based on measured 1991–2020 NOAA station history.

Best comfortJune

Typical high24.2°C

Typical low14.2°C

Rain in June116 mm

Comfort

June

June · September · August

81climate match

Beach

July

July · August · June

71climate match

Outdoors

May

May · September · June

77climate match

The weakest month is January, scoring 5 against June’s 81 — days reach only 1.6°C, 22° 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

51.6° / -7.5°

Feb

52.9° / -6.6°

Mar

56.7° / -2.7°

Apr

2613.5° / 3.3°

May

5919.4° / 8.9°

Jun

8124.2° / 14.2°

Jul

7127.6° / 17.6°

Aug

7426.8° / 17°

Sep

7822.7° / 13°

Oct

3916.1° / 6.7°

Nov

1310.1° / 1.2°

Dec

54.6° / -3.8°

Monthly climate evidence for Milton — daylight is calculated from latitude, everything else is measured, sea temperature from the nearest open water 21 km away
Month	Day	Night	Rain	Wet days	Sea	Daylight	Comfort	Coverage
January	1.6°C	-7.5°C	114 mm	10	4.9°C	9 h 24	5	Strong coverage
February	2.9°C	-6.6°C	101 mm	9	3.3°C	10 h 30	5	Strong coverage
March	6.7°C	-2.7°C	139 mm	10.3	3.5°C	11 h 48	5	Strong coverage
April	13.5°C	3.3°C	122 mm	9.6	5.8°C	13 h 18	26	Strong coverage
May	19.4°C	8.9°C	97 mm	10.1	10.1°C	14 h 33	59	Strong coverage
June	24.2°C	14.2°C	116 mm	9.3	14.7°C	15 h 15	81	Strong coverage
July	27.6°C	17.6°C	90 mm	8.3	18.2°C	14 h 59	71	Strong coverage
August	26.8°C	17°C	100 mm	8.1	18.8°C	13 h 53	74	Strong coverage
September	22.7°C	13°C	103 mm	7.5	17.0°C	12 h 26	78	Strong coverage
October	16.1°C	6.7°C	137 mm	9	13.5°C	10 h 59	39	Strong coverage
November	10.1°C	1.2°C	112 mm	9	10.2°C	9 h 43	13	Strong coverage
December	4.6°C	-3.8°C	137 mm	10	7.5°C	9 h 06	5	Strong coverage

What has changed

Milton runs +1.3°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

+1.8

Feb

+2.0

Mar

+1.0

Apr

+1.2

May

+0.9

Jun

+0.6

Jul

+1.4

Aug

+1.4

Sep

+1.7

Oct

+1.0

Nov

+0.9

Dec

+2.2

June daytime highs, 2011–2025. Last recorded: 25.2°C.

Records at BLUE HILL COOP, 1885–2026
Month	Record high	Record low	Wettest day	Wettest / driest month	Years
January	20.0°C13 Jan 2020	-26.7°C15 Jan 1957	79 mm6 Jan 1889	295 mm1979 · driest 23 mm in 1955	141
February	21.7°C25 Feb 2017	-29.4°C9 Feb 1934	123 mm12 Feb 1886	237 mm1969 · driest 18 mm in 2012	142
March	30.0°C29 Mar 1998	-20.6°C4 Mar 1950	126 mm14 Mar 2010	478 mm2010 · driest 2 mm in 1915	142
April	34.4°C20 Apr 1976	-14.4°C1 Apr 1923	92 mm1 Apr 1997	313 mm1987 · driest 15 mm in 1963	142
May	35.6°C19 May 2017	-2.8°C4 May 1911	96 mm26 May 1967	257 mm2006 · driest 13 mm in 1944	142
June	37.2°C4 Jun 1919	2.2°C1 Jun 1945	155 mm14 Jun 1998	387 mm1998 · driest 4 mm in 1999	142
July	37.8°C22 Jul 1977	6.7°C1 Jul 1988	113 mm1 Jul 1915	296 mm1938 · driest 3 mm in 1952	142
August	38.3°C3 Aug 1975	3.9°C30 Aug 1965	205 mm19 Aug 1955	477 mm1955 · driest 13 mm in 1981	141
September	37.2°C2 Sep 1953	-2.2°C29 Sep 1914	142 mm11 Sep 1999	300 mm1999 · driest 9 mm in 2014	141
October	31.1°C8 Oct 1963	-6.1°C19 Oct 1922	156 mm21 Oct 1996	374 mm2005 · driest 6 mm in 1924	141
November	27.2°C2 Nov 1950	-15.0°C27 Nov 1932	108 mm5 Nov 1955	262 mm2018 · driest 16 mm in 1917	141
December	23.3°C8 Dec 1998	-28.3°C29 Dec 1933	133 mm27 Dec 1969	309 mm1969 · driest 21 mm in 1989	141

Typical days per month at BLUE HILL COOP, 1991–2020
Month	Days 25°C+	Days 30°C+	Frost nights	Heavy rain (10 mm+)	Snow days
January	0	0	27	4	8
February	0	0	25	3	7
March	<1	0	22	4	6
April	1	<1	6	4	1
May	6	1	<1	3	0
June	15	4	0	3	0
July	25	9	0	3	0
August	23	7	0	3	0
September	10	2	0	3	0
October	1	0	2	4	<1
November	0	0	13	4	1
December	0	0	24	5	5

The best month has moved. On the 1961–1990 numbers the strongest month here was June (scoring 89); on 2011–2025 it is September (87). Both are scored the same way, from the same station — only the climate underneath changed.

How often, not how much — every day in BLUE HILL COOP’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	0%	33%	13%	42%	-2.2–4.1°C
February	<1%	31%	12%	40%	-1.5–5.1°C
March	2%	32%	12%	43%	3.3–9.5°C
April	10%	32%	12%	41%	10.4–15.0°C
May	36%	32%	10%	39%	16.9–21.2°C
June	61%	30%	10%	34%	21.6–25.8°C
July	71%	28%	10%	30%	24.9–28.8°C
August	70%	26%	10%	27%	23.7–27.6°C
September	51%	26%	10%	28%	19.9–23.7°C
October	19%	26%	11%	29%	13.7–17.9°C
November	3%	29%	12%	34%	7.3–12.2°C
December	<1%	31%	12%	39%	0.3–6.2°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.

1886Each stripe is one year’s mean temperature against the 140-year average. Warmest: 2012. Coolest: 1888.2025

The evidence behind this page

Nearby, measured,
and named.

Place identity: GeoNames 4944193
NOAA station: USC00190736 · BLUE HILL COOP
Station distance: 5.7 km from the place centre
Climate period: 1991–2020
Minimum month coverage: 30 usable years
Daylight: Calculated from latitude 42.25°, mid-month, sunrise to sunset including refraction. Not a station measurement.
Sea temperature: NOAA OISST v2.1 1991–2020 monthly climatology, nearest open water 21 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 BLUE HILL COOP is what differs

Hyde Park→Dedham→Holbrook→Fairmount→Readville→Adamsville (historical)→

Or put two places side by side: Milton vs Hyde Park

Best time to visitMilton.

June

July

May

The whole year,without the guesswork.

Milton runs +1.3°Con the 1961–1990 baseline.

Nearby, measured,and named.

Best time to visit
Milton.

The whole year,
without the guesswork.

Milton runs +1.3°C
on the 1961–1990 baseline.

Nearby, measured,
and named.