United Kingdom · 1991–2020

Best time to visit
Thornhill.

July leads for comfortable weather in Thornhill: typically 17.3°C by day, 8.9°C at night, with 122 mm of rain. Based on measured 1991–2020 NOAA station history.

Best comfortJuly

Typical high17.3°C

Typical low8.9°C

Rain in July122 mm

Comfort

July

July · June · August

43climate match

Beach

January

January · February · March

5climate match

Outdoors

July

July · June · August

59climate match

The weakest month is January, scoring 5 against July’s 43 — days reach only 4.5°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

54.5° / -0.7°

Feb

54.9° / -0.8°

Mar

57° / 0.2°

Apr

89.8° / 1.7°

May

2513.4° / 4°

Jun

3815.5° / 6.9°

Jul

4317.3° / 8.9°

Aug

3816.7° / 8.6°

Sep

2714.3° / 6.9°

Oct

510.5° / 4.1°

Nov

57.1° / 1.4°

Dec

55° / -0.6°

Monthly climate evidence for Thornhill — daylight is calculated from latitude, everything else is measured, sea temperature from the nearest open water 41 km away
Month	Day	Night	Rain	Wet days	Sea	Daylight	Comfort	Coverage
January	4.5°C	-0.7°C	217 mm	20	6.4°C	7 h 42	5	Strong coverage
February	4.9°C	-0.8°C	167 mm	16.8	5.9°C	9 h 33	5	Strong coverage
March	7°C	0.2°C	149 mm	16.5	6.4°C	11 h 38	5	Strong coverage
April	9.8°C	1.7°C	114 mm	14.9	8.2°C	14 h 02	8	Strong coverage
May	13.4°C	4°C	109 mm	13.6	10.8°C	16 h 08	25	Strong coverage
June	15.5°C	6.9°C	104 mm	13.8	13.6°C	17 h 23	38	Strong coverage
July	17.3°C	8.9°C	122 mm	16.2	15.7°C	16 h 53	43	Strong coverage
August	16.7°C	8.6°C	140 mm	16.4	16.5°C	15 h	38	Strong coverage
September	14.3°C	6.9°C	142 mm	15.8	15.4°C	12 h 38	27	Strong coverage
October	10.5°C	4.1°C	202 mm	18.9	13.3°C	10 h 21	5	Strong coverage
November	7.1°C	1.4°C	207 mm	19	10.8°C	8 h 15	5	Strong coverage
December	5°C	-0.6°C	213 mm	18.9	8.3°C	7 h 09	5	Strong coverage

Records at LEADHILLS, 1960–2018
Month	Record high	Record low	Wettest day	Wettest / driest month	Years
January	10.9°C14 Jan 1990	-14.1°C1 Jan 1979	82 mm15 Jan 1962	481 mm1974 · driest 17 mm in 1963	57
February	13.2°C13 Feb 2008	-14.0°C22 Feb 1986	60 mm16 Feb 2016	447 mm2014 · driest 18 mm in 1986	58
March	19.5°C26 Mar 2012	-15.0°C2 Mar 1965	67 mm29 Mar 1993	301 mm1994 · driest 34 mm in 1969	58
April	23.8°C30 Apr 1990	-9.4°C11 Apr 1978	43 mm13 Apr 2013	195 mm1972 · driest 13 mm in 1980	58
May	26.8°C1 May 1990	-6.8°C6 May 1997	42 mm16 May 1993	251 mm1986 · driest 15 mm in 1984	58
June	28.2°C27 Jun 1995	-3.1°C1 Jun 1975	37 mm15 Jun 2012	227 mm2012 · driest 20 mm in 1988	58
July	28.4°C18 Jul 2013	0.0°C16 Jul 1965	67 mm10 Jul 1987	249 mm1988 · driest 39 mm in 2005	58
August	28.5°C1 Aug 1995	-1.1°C20 Aug 1964	85 mm13 Aug 1966	384 mm2009 · driest 30 mm in 1976	58
September	24.8°C3 Sep 1991	-3.4°C22 Sep 1979	94 mm20 Sep 2006	270 mm1962 · driest 23 mm in 2014	58
October	20.6°C5 Oct 1965	-7.4°C17 Oct 1993	99 mm30 Oct 1977	341 mm1977 · driest 51 mm in 1974	58
November	14.6°C2 Nov 2015	-10.5°C28 Nov 2010	64 mm4 Nov 1999	416 mm2009 · driest 39 mm in 1983	57
December	12.8°C26 Dec 1983	-15.0°C31 Dec 1961	90 mm29 Dec 2013	487 mm2015 · driest 37 mm in 1995	57

Typical days per month at LEADHILLS, 1991–2020
Month	Days 25°C+	Frost nights	Heavy rain (10 mm+)
January	0	17	8
February	0	15	6
March	0	14	5
April	0	9	4
May	<1	4	4
June	<1	<1	4
July	1	0	4
August	<1	0	5
September	0	<1	5
October	0	4	7
November	0	10	7
December	0	14	8

How often, not how much — every day in LEADHILLS’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%	63%	24%	78%	2.2–5.7°C
February	0%	54%	17%	67%	2.3–5.9°C
March	0%	54%	17%	72%	4.5–8.2°C
April	1%	47%	11%	63%	7.5–11.2°C
May	6%	45%	13%	60%	10.9–15.1°C
June	12%	45%	11%	61%	13.8–17.2°C
July	16%	49%	13%	69%	15.0–19.4°C
August	11%	51%	14%	69%	14.8–18.8°C
September	2%	54%	18%	74%	12.4–15.2°C
October	<1%	60%	22%	78%	9.1–11.9°C
November	0%	60%	22%	78%	4.9–8.2°C
December	0%	58%	22%	78%	3.0–6.7°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.

1960Each stripe is one year’s mean temperature against the 54-year average. Warmest: 2014. Coolest: 1979.2016

The evidence behind this page

Nearby, measured,
and named.

Place identity: GeoNames 2635981
NOAA station: UKE00105932 · LEADHILLS
Station distance: 20.4 km from the place centre
Climate period: 1991–2020
Minimum month coverage: 26 usable years
Daylight: Calculated from latitude 55.23°, mid-month, sunrise to sunset including refraction. Not a station measurement.
Sea temperature: NOAA OISST v2.1 1991–2020 monthly climatology, nearest open water 41 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 LEADHILLS is what differs

Kirkconnel→Sanquhar→Douglas→Muirkirk→Leadhills→Wanlockhead→

Or put two places side by side: Thornhill vs Kirkconnel

Best time to visitThornhill.

July

January

July

The whole year,without the guesswork.

Nearby, measured,and named.

Best time to visit
Thornhill.

The whole year,
without the guesswork.

Nearby, measured,
and named.