United States · 1991–2020

Best time to visit
Ashton.

September leads for comfortable weather in Ashton: typically 22.6°C by day, 11.3°C at night, with 90 mm of rain. Based on measured 1991–2020 NOAA station history.

Best comfortSeptember

Typical high22.6°C

Typical low11.3°C

Rain in September90 mm

Comfort

September

September · August · June

77climate match

Beach

July

July · August · June

64climate match

Outdoors

May

May · September · October

75climate match

The weakest month is January, scoring 5 against September’s 77 — days reach only -3.1°C, 27° 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

5-3.1° / -11.8°

Feb

5-0.5° / -9.4°

Mar

56° / -4°

Apr

2613.5° / 2.2°

May

5920.4° / 9°

Jun

7325.5° / 14.5°

Jul

6927.4° / 16.9°

Aug

7626.4° / 16°

Sep

7722.6° / 11.3°

Oct

4415.5° / 4.7°

Nov

77° / -2.1°

Dec

5-0.1° / -7.9°

Monthly climate evidence for Ashton — daylight is calculated from latitude, everything else is measured
Month	Day	Night	Rain	Wet days	Daylight	Comfort	Coverage
January	-3.1°C	-11.8°C	38 mm	6.1	9 h 19	5	Strong coverage
February	-0.5°C	-9.4°C	41 mm	6.4	10 h 27	5	Strong coverage
March	6°C	-4°C	58 mm	6.8	11 h 47	5	Strong coverage
April	13.5°C	2.2°C	104 mm	9.8	13 h 20	26	Strong coverage
May	20.4°C	9°C	116 mm	10.3	14 h 38	59	Strong coverage
June	25.5°C	14.5°C	142 mm	9.8	15 h 21	73	Strong coverage
July	27.4°C	16.9°C	118 mm	8.1	15 h 04	69	Strong coverage
August	26.4°C	16°C	109 mm	7.7	13 h 57	76	Strong coverage
September	22.6°C	11.3°C	90 mm	7	12 h 27	77	Strong coverage
October	15.5°C	4.7°C	74 mm	7.2	10 h 57	44	Strong coverage
November	7°C	-2.1°C	58 mm	6.3	9 h 39	7	Strong coverage
December	-0.1°C	-7.9°C	47 mm	6.4	9 h 00	5	Strong coverage

What has changed

Ashton runs +0.2°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

+0.5

Feb

-0.4

Mar

+0.5

Apr

-1.2

May

+0.5

Jun

+0.1

Jul

-0.2

Aug

-0.2

Sep

+1.1

Oct

+0.2

Nov

-0.1

Dec

+1.4

September daytime highs, 2011–2018. Last recorded: 23.2°C.

Records at CHARMANY FARM, 1959–2019
Month	Record high	Record low	Wettest day	Wettest / driest month	Years
January	13.3°C28 Jan 2002	-36.7°C19 Jan 1994	34 mm29 Jan 2013	82 mm2013 · driest 1 mm in 1981	56
February	20.6°C23 Feb 2017	-32.8°C3 Feb 1996	37 mm18 Feb 2008	104 mm2008 · driest 1 mm in 1987	55
March	27.2°C22 Mar 2012	-23.9°C4 Mar 2002	75 mm31 Mar 1998	147 mm1998 · driest 6 mm in 1978	54
April	33.9°C23 Apr 1980	-15.6°C6 Apr 1979	65 mm23 Apr 1999	204 mm1999 · driest 23 mm in 1989	54
May	34.4°C28 May 2018	-5.0°C9 May 1966	105 mm22 May 2004	272 mm2004 · driest 17 mm in 1992	52
June	38.3°C21 Jun 1988	0.6°C10 Jun 1988	91 mm17 Jun 1996	291 mm1996 · driest 7 mm in 2012	53
July	39.4°C7 Jul 2012	5.6°C23 Jul 1985	112 mm18 Jul 1977	277 mm2017 · driest 22 mm in 2001	55
August	38.9°C18 Aug 1988	2.8°C24 Aug 1984	244 mm21 Aug 2018	371 mm2007 · driest 7 mm in 1970	57
September	35.0°C9 Sep 1978	-4.4°C26 Sep 1984	80 mm23 Sep 2009	239 mm1970 · driest 2 mm in 1979	57
October	31.1°C2 Oct 1976	-8.3°C25 Oct 1987	77 mm19 Oct 1984	176 mm1959 · driest 4 mm in 1964	57
November	23.9°C3 Nov 1964	-22.8°C30 Nov 1976	90 mm4 Nov 2003	210 mm2003 · driest 2 mm in 1976	57
December	18.3°C1 Dec 1970	-34.4°C24 Dec 1983	66 mm4 Dec 2010	114 mm2009 · driest 5 mm in 1964	56

Typical days per month at CHARMANY FARM, 1991–2020
Month	Days 25°C+	Days 30°C+	Frost nights	Heavy rain (10 mm+)	Snow days
January	0	0	29	1	5
February	0	0	26	<1	5
March	<1	0	23	2	3
April	1	<1	9	4	<1
May	7	1	<1	4	0
June	18	5	0	4	0
July	24	7	0	3	0
August	21	5	0	3	0
September	11	2	<1	3	0
October	2	0	5	2	<1
November	0	0	19	2	1
December	0	0	28	1	5

The best month has moved. On the 1961–1990 numbers the strongest month here was June (scoring 81); on 2011–2025 it is September (83). Both are scored the same way, from the same station — only the climate underneath changed.

How often, not how much — every day in CHARMANY FARM’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%	17%	3%	13%	-7.0–-0.3°C
February	<1%	17%	3%	14%	-4.5–3.3°C
March	3%	22%	5%	22%	2.3–9.0°C
April	13%	31%	11%	39%	10.8–16.4°C
May	40%	30%	11%	37%	17.8–23.4°C
June	64%	30%	12%	36%	23.6–27.4°C
July	74%	26%	10%	26%	25.9–29.9°C
August	73%	25%	10%	25%	24.4–28.8°C
September	54%	24%	10%	26%	20.5–24.7°C
October	20%	23%	7%	24%	12.8–18.2°C
November	2%	21%	6%	18%	3.3–10.8°C
December	0%	19%	4%	15%	-4.0–2.8°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.

1964Each stripe is one year’s mean temperature against the 50-year average. Warmest: 2012. Coolest: 1978.2018

The evidence behind this page

Nearby, measured,
and named.

Place identity: GeoNames 5244264
NOAA station: USC00471416 · CHARMANY FARM
Station distance: 10.2 km from the place centre
Climate period: 1991–2020
Minimum month coverage: 27 usable years
Daylight: Calculated from latitude 43.14°, 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 CHARMANY FARM is what differs

Middleton→Verona→Shorewood Hills→Mount Vernon→Ashton Corners→College Hills→

Or put two places side by side: Ashton vs Middleton

Best time to visitAshton.

September

July

May

The whole year,without the guesswork.

Ashton runs +0.2°Con the 1961–1990 baseline.

Nearby, measured,and named.

Best time to visit
Ashton.

The whole year,
without the guesswork.

Ashton runs +0.2°C
on the 1961–1990 baseline.

Nearby, measured,
and named.