United States · 1991–2020

Best time to visit
Leighton.

September leads for comfortable weather in Leighton: typically 25.2°C by day, 11.3°C at night, with 87 mm of rain. Based on measured 1991–2020 NOAA station history.

Best comfortSeptember

Typical high25.2°C

Typical low11.3°C

Rain in September87 mm

Comfort

September

September · June · August

79climate match

Beach

July

July · August · June

72climate match

Outdoors

October

October · May · September

75climate match

The weakest month is January, scoring 5 against September’s 79 — days reach only -0.9°C, 25° 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

5-0.9° / -11.3°

Feb

51.9° / -9.2°

Mar

149.5° / -2.9°

Apr

4116.6° / 3.2°

May

6622.2° / 10°

Jun

6727.3° / 15.6°

Jul

6229.6° / 17.9°

Aug

6728.6° / 16.2°

Sep

7925.2° / 11.3°

Oct

5417.9° / 4.7°

Nov

159.6° / -2.2°

Dec

52.4° / -8°

Monthly climate evidence for Leighton — daylight is calculated from latitude, everything else is measured
Month	Day	Night	Rain	Wet days	Daylight	Comfort	Coverage
January	-0.9°C	-11.3°C	33 mm	5	9 h 30	5	Strong coverage
February	1.9°C	-9.2°C	42 mm	5.3	10 h 33	5	Strong coverage
March	9.5°C	-2.9°C	53 mm	6.6	11 h 48	14	Strong coverage
April	16.6°C	3.2°C	92 mm	9.1	13 h 15	41	Strong coverage
May	22.2°C	10°C	124 mm	10.6	14 h 29	66	Strong coverage
June	27.3°C	15.6°C	144 mm	9.3	15 h 09	67	Strong coverage
July	29.6°C	17.9°C	109 mm	7.6	14 h 53	62	Strong coverage
August	28.6°C	16.2°C	120 mm	7.8	13 h 50	67	Strong coverage
September	25.2°C	11.3°C	87 mm	6.9	12 h 25	79	Strong coverage
October	17.9°C	4.7°C	69 mm	6.2	11 h 01	54	Strong coverage
November	9.6°C	-2.2°C	59 mm	5.8	9 h 48	15	Strong coverage
December	2.4°C	-8°C	37 mm	5.1	9 h 12	5	Strong coverage

What has changed

Leighton runs +0.6°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

+0.7

Feb

+0.2

Mar

+1.4

Apr

-0.4

May

-0.3

Jun

+0.2

Jul

-0.3

Aug

+0.2

Sep

+1.9

Oct

+0.3

Nov

+0.9

Dec

+2.6

September daytime highs, 2011–2024. Last recorded: 28.7°C.

Records at OSKALOOSA, 1893–2025
Month	Record high	Record low	Wettest day	Wettest / driest month	Years
January	20.6°C31 Jan 1989	-35.0°C12 Jan 1912	76 mm17 Jan 2008	190 mm2008 · driest 0 mm in 1894	131
February	25.6°C24 Feb 1930	-35.0°C13 Feb 1905	57 mm25 Feb 2007	110 mm2008 · driest 0 mm in 1904	131
March	31.1°C29 Mar 1895	-34.4°C1 Mar 1962	60 mm16 Mar 1919	161 mm1961 · driest 0 mm in 1897	131
April	33.3°C10 Apr 1930	-14.4°C5 Apr 1982	97 mm18 Apr 2013	236 mm1965 · driest 0 mm in 1895	131
May	41.1°C31 May 1934	-4.4°C4 May 1907	87 mm26 May 1903	312 mm1996 · driest 0 mm in 1893	131
June	40.0°C26 Jun 1934	2.2°C8 Jun 1910	165 mm24 Jun 2000	393 mm2000 · driest 0 mm in 1895	131
July	44.4°C25 Jul 1936	6.7°C21 Jul 1944	111 mm8 Jul 1994	295 mm1992 · driest 0 mm in 1939	131
August	44.4°C8 Aug 1934	2.2°C20 Aug 1950	136 mm5 Aug 1970	424 mm2007 · driest 0 mm in 1895	129
September	38.3°C11 Sep 1936	-6.7°C28 Sep 1942	141 mm13 Sep 1961	300 mm1965 · driest 0 mm in 1896	131
October	35.6°C2 Oct 1953	-16.1°C30 Oct 1925	95 mm14 Oct 2014	176 mm1997 · driest 0 mm in 1897	131
November	27.8°C1 Nov 1938	-21.7°C21 Nov 1937	118 mm17 Nov 1952	231 mm1983 · driest 0 mm in 1914	131
December	23.9°C16 Dec 2021	-34.4°C28 Dec 1924	53 mm14 Dec 2015	144 mm2015 · driest 0 mm in 1911	131

Typical days per month at OSKALOOSA, 1991–2020
Month	Days 25°C+	Days 30°C+	Frost nights	Heavy rain (10 mm+)	Snow days
January	0	0	26	<1	3
February	0	0	23	1	4
March	<1	0	19	2	1
April	3	<1	7	3	<1
May	10	2	<1	4	0
June	21	9	0	4	0
July	26	14	0	3	0
August	24	11	0	3	0
September	16	6	<1	3	0
October	4	<1	6	2	<1
November	<1	0	17	2	<1
December	0	0	25	1	2

The best month has moved. On the 1961–1990 numbers the strongest month here was May (scoring 80); 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 OSKALOOSA’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%	13%	3%	9%	-4.9–3.4°C
February	<1%	15%	3%	11%	-2.5–6.2°C
March	8%	19%	6%	19%	4.9–12.9°C
April	27%	26%	9%	34%	13.6–19.5°C
May	53%	30%	11%	36%	20.1–25.8°C
June	70%	28%	12%	33%	25.2–30.0°C
July	79%	21%	9%	23%	27.9–32.7°C
August	79%	21%	9%	21%	27.0–31.4°C
September	68%	22%	9%	24%	22.8–27.9°C
October	39%	18%	6%	19%	16.0–22.0°C
November	7%	15%	6%	12%	6.2–12.7°C
December	<1%	15%	3%	11%	-2.0–5.8°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.

1893Each stripe is one year’s mean temperature against the 122-year average. Warmest: 1931. Coolest: 1917.2024

The evidence behind this page

Nearby, measured,
and named.

Place identity: GeoNames 4864437
NOAA station: USC00136327 · OSKALOOSA
Station distance: 11.9 km from the place centre
Climate period: 1991–2020
Minimum month coverage: 27 usable years
Daylight: Calculated from latitude 41.34°, 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 OSKALOOSA is what differs

Oskaloosa→New Sharon→Beacon→University Park→Barnes City→Rose Hill→

Or put two places side by side: Leighton vs Oskaloosa

Best time to visitLeighton.

September

July

October

The whole year,without the guesswork.

Leighton runs +0.6°Con the 1961–1990 baseline.

Nearby, measured,and named.

Best time to visit
Leighton.

The whole year,
without the guesswork.

Leighton runs +0.6°C
on the 1961–1990 baseline.

Nearby, measured,
and named.