United States · 1991–2020

Best time to visit
London.

October leads for comfortable weather in London: typically 24.2°C by day, 10.2°C at night, with 102 mm of rain. Based on measured 1991–2020 NOAA station history.

Best comfortOctober

Typical high24.2°C

Typical low10.2°C

Rain in October102 mm

Comfort

October

October · April · May

79climate match

Beach

June

June · August · July

74climate match

Outdoors

October

October · March · April

72climate match

The weakest month is January, scoring 16 against October’s 79 — days reach only 10.6°C, 13° below the 24°C the score treats as ideal, and nights drop to -1°C.

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

1610.6° / -1°

Feb

3113.7° / 0.8°

Mar

4918.6° / 5.1°

Apr

7323.7° / 9.8°

May

7027.4° / 14.9°

Jun

5631.6° / 19.4°

Jul

4633.9° / 21.3°

Aug

4933.7° / 20.7°

Sep

6830.1° / 16.5°

Oct

7924.2° / 10.2°

Nov

4216.8° / 4.5°

Dec

1911.5° / 0.4°

Monthly climate evidence for London — daylight is calculated from latitude, everything else is measured
Month	Day	Night	Rain	Wet days	Daylight	Comfort	Coverage
January	10.6°C	-1°C	90 mm	6	10 h 01	16	Strong coverage
February	13.7°C	0.8°C	85 mm	5.9	10 h 51	31	Strong coverage
March	18.6°C	5.1°C	116 mm	7.2	11 h 52	49	Strong coverage
April	23.7°C	9.8°C	131 mm	6.8	13 h 02	73	Strong coverage
May	27.4°C	14.9°C	138 mm	8	14 h 00	70	Strong coverage
June	31.6°C	19.4°C	93 mm	6	14 h 32	56	Strong coverage
July	33.9°C	21.3°C	92 mm	5.7	14 h 19	46	Strong coverage
August	33.7°C	20.7°C	85 mm	5.1	13 h 29	49	Strong coverage
September	30.1°C	16.5°C	91 mm	4.9	12 h 21	68	Strong coverage
October	24.2°C	10.2°C	102 mm	5.7	11 h 14	79	Strong coverage
November	16.8°C	4.5°C	122 mm	6.3	10 h 15	42	Strong coverage
December	11.5°C	0.4°C	115 mm	6.1	9 h 47	19	Strong coverage

What has changed

London runs +0.4°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

+1.0

Feb

+0.4

Mar

+1.0

Apr

-0.5

May

-0.5

Jun

+0.2

Jul

+0.2

Aug

-0.1

Sep

+1.2

Oct

+0.4

Nov

+0.1

Dec

+1.8

October daytime highs, 2011–2025. Last recorded: 24.8°C.

Records at DARDANELLE, 1909–2026
Month	Record high	Record low	Wettest day	Wettest / driest month	Years
January	27.8°C25 Jan 1950	-23.9°C24 Jan 1918	153 mm13 Jan 2013	288 mm1950 · driest 6 mm in 1964	114
February	30.6°C2 Feb 1911	-25.6°C2 Feb 1951	93 mm18 Feb 1938	290 mm1945 · driest 13 mm in 1947	114
March	35.0°C24 Mar 1929	-12.8°C3 Mar 1943	152 mm22 Mar 1935	380 mm1935 · driest 23 mm in 1910	114
April	37.8°C18 Apr 1917	-4.4°C11 Apr 1989	127 mm16 Apr 1939	334 mm1957 · driest 15 mm in 1930	114
May	37.8°C31 May 1934	1.1°C1 May 1960	126 mm8 May 1978	343 mm2015 · driest 3 mm in 2012	113
June	42.2°C26 Jun 2012	8.3°C11 Jun 1988	123 mm27 Jun 1977	321 mm1935 · driest 0 mm in 1952	113
July	43.3°C18 Jul 1936	9.4°C15 Jul 1926	122 mm13 Jul 1935	207 mm1989 · driest 1 mm in 1954	114
August	45.0°C10 Aug 1936	8.3°C29 Aug 1986	162 mm13 Aug 1957	396 mm1915 · driest 0 mm in 2000	114
September	42.2°C7 Sep 1947	0.0°C27 Sep 1942	102 mm25 Sep 1925	266 mm1925 · driest 0 mm in 2004	113
October	37.2°C8 Oct 1963	-5.0°C29 Oct 1910	182 mm6 Oct 1998	471 mm1984 · driest 0 mm in 2005	113
November	31.1°C2 Nov 1952	-10.0°C15 Nov 1940	132 mm22 Nov 2011	352 mm2011 · driest 10 mm in 1949	113
December	27.2°C24 Dec 1955	-19.4°C23 Dec 1989	153 mm28 Dec 2015	290 mm2015 · driest 4 mm in 2005	114

Typical days per month at DARDANELLE, 1991–2020
Month	Days 25°C+	Days 30°C+	Frost nights	Heavy rain (10 mm+)	Snow days
January	<1	0	19	3	<1
February	<1	0	14	3	<1
March	5	<1	7	4	<1
April	14	1	<1	4	0
May	24	8	0	4	0
June	29	23	0	3	0
July	31	29	0	3	0
August	31	27	0	3	0
September	27	17	0	3	0
October	16	4	<1	3	0
November	2	0	8	4	0
December	<1	0	16	4	<1

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

How often, not how much — every day in DARDANELLE’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	7%	21%	10%	20%	7.7–13.9°C
February	16%	23%	11%	23%	9.8–17.0°C
March	37%	24%	13%	24%	15.4–22.0°C
April	61%	26%	13%	26%	21.8–26.0°C
May	71%	27%	14%	31%	25.9–29.3°C
June	77%	23%	11%	23%	29.9–33.8°C
July	80%	20%	10%	17%	32.3–36.4°C
August	81%	19%	9%	16%	31.2–36.8°C
September	80%	19%	9%	17%	28.1–33.0°C
October	71%	18%	9%	17%	22.5–27.3°C
November	30%	21%	11%	19%	14.4–19.9°C
December	8%	21%	10%	20%	9.1–14.7°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.

1911Each stripe is one year’s mean temperature against the 106-year average. Warmest: 2012. Coolest: 1912.2025

The evidence behind this page

Nearby, measured,
and named.

Place identity: GeoNames 4119617
NOAA station: USC00031838 · DARDANELLE
Station distance: 13.1 km from the place centre
Climate period: 1991–2020
Minimum month coverage: 29 usable years
Daylight: Calculated from latitude 35.33°, 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 DARDANELLE is what differs

Dardanelle→Alpha→Ard→Bethel→Centerville→Chickalah→

Or put two places side by side: London vs Dardanelle

Best time to visitLondon.

October

June

October

The whole year,without the guesswork.

London runs +0.4°Con the 1961–1990 baseline.

Nearby, measured,and named.

Best time to visit
London.

The whole year,
without the guesswork.

London runs +0.4°C
on the 1961–1990 baseline.

Nearby, measured,
and named.