United States · 1991–2020

Best time to visit
Wilmington Manor.

September leads for comfortable weather in Wilmington Manor: typically 25.7°C by day, 15.1°C at night, with 111 mm of rain. Based on measured 1991–2020 NOAA station history.

Best comfortSeptember

Typical high25.7°C

Typical low15.1°C

Rain in September111 mm

Comfort

September

September · May · June

80climate match

Beach

August

August · July · June

78climate match

Outdoors

October

October · April · May

81climate match

The weakest month is January, scoring 5 against September’s 80 — days reach only 5.1°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

55.1° / -3.6°

Feb

56.6° / -2.9°

Mar

1811.3° / 0.9°

Apr

5117.8° / 6.3°

May

7823° / 11.8°

Jun

6727.8° / 17.1°

Jul

5430.3° / 20.1°

Aug

6229.3° / 19.1°

Sep

8025.7° / 15.1°

Oct

6119.3° / 8.4°

Nov

3313.1° / 2.9°

Dec

57.7° / -1.1°

Monthly climate evidence for Wilmington Manor — daylight is calculated from latitude, everything else is measured
Month	Day	Night	Rain	Wet days	Daylight	Comfort	Coverage
January	5.1°C	-3.6°C	82 mm	8.2	9 h 39	5	Strong coverage
February	6.6°C	-2.9°C	72 mm	7.5	10 h 38	5	Strong coverage
March	11.3°C	0.9°C	106 mm	9	11 h 49	18	Strong coverage
April	17.8°C	6.3°C	89 mm	8.3	13 h 11	51	Strong coverage
May	23°C	11.8°C	90 mm	9.1	14 h 20	78	Strong coverage
June	27.8°C	17.1°C	119 mm	8.6	14 h 58	67	Strong coverage
July	30.3°C	20.1°C	112 mm	8.2	14 h 43	54	Strong coverage
August	29.3°C	19.1°C	101 mm	7.2	13 h 44	62	Strong coverage
September	25.7°C	15.1°C	111 mm	7.2	12 h 24	80	Strong coverage
October	19.3°C	8.4°C	93 mm	6.8	11 h 05	61	Strong coverage
November	13.1°C	2.9°C	78 mm	7.1	9 h 56	33	Strong coverage
December	7.7°C	-1.1°C	98 mm	8.7	9 h 22	5	Strong coverage

What has changed

Wilmington Manor 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

+1.9

Feb

+2.2

Mar

+1.1

Apr

+1.4

May

+0.9

Jun

+0.9

Jul

+1.4

Aug

+0.6

Sep

+1.0

Oct

+1.1

Nov

+0.5

Dec

+2.1

September daytime highs, 2011–2025. Last recorded: 27.3°C.

Records at WILMINGTON NEW CASTLE CO AP, 1931–2026
Month	Record high	Record low	Wettest day	Wettest / driest month	Years
January	23.9°C26 Jan 1950	-25.6°C22 Jan 1984	65 mm25 Jan 2020	214 mm1978 · driest 0 mm in 1933	82
February	25.6°C24 Feb 1985	-24.4°C9 Feb 1934	58 mm13 Feb 1966	178 mm1979 · driest 0 mm in 1933	82
March	30.0°C21 Mar 1948	-16.7°C10 Mar 1984	82 mm21 Mar 2000	233 mm2000 · driest 0 mm in 1934	82
April	34.4°C22 Apr 1985	-7.8°C7 Apr 1982	111 mm15 Apr 2007	217 mm2007 · driest 0 mm in 1933	82
May	35.6°C31 May 2011	-1.1°C1 May 1978	69 mm29 May 1990	187 mm1983 · driest 0 mm in 1933	84
June	38.3°C24 Jun 2025	5.0°C8 Jun 1932	105 mm22 Jun 1972	347 mm2013 · driest 0 mm in 1931	83
July	39.4°C7 Jul 2010	8.9°C1 Jul 1988	168 mm5 Jul 1989	321 mm1989 · driest 0 mm in 1933	83
August	38.3°C30 Aug 1953	6.1°C29 Aug 1982	137 mm27 Aug 2011	373 mm2011 · driest 0 mm in 1932	82
September	37.8°C2 Sep 1953	2.2°C30 Sep 1942	211 mm16 Sep 1999	322 mm1999 · driest 0 mm in 1933	82
October	36.7°C2 Oct 2019	-4.4°C28 Oct 1976	96 mm29 Oct 2012	204 mm1995 · driest 0 mm in 1942	82
November	29.4°C1 Nov 1950	-10.0°C16 Nov 1933	70 mm25 Nov 1950	221 mm2018 · driest 0 mm in 1933	83
December	23.9°C4 Dec 1998	-21.7°C25 Dec 1983	58 mm9 Dec 2009	218 mm2009 · driest 0 mm in 1932	82

Typical days per month at WILMINGTON NEW CASTLE CO AP, 1991–2020
Month	Days 25°C+	Days 30°C+	Frost nights	Heavy rain (10 mm+)	Snow days
January	0	0	24	3	4
February	0	0	21	3	4
March	<1	0	14	4	2
April	4	<1	2	3	<1
May	11	3	0	3	0
June	24	10	0	4	0
July	30	18	0	4	0
August	29	14	0	3	0
September	18	5	0	3	0
October	4	<1	<1	3	0
November	<1	0	10	3	<1
December	0	0	20	4	2

The best month has moved. On the 1961–1990 numbers the strongest month here was September (scoring 88); on 2011–2025 it is May (86). Both are scored the same way, from the same station — only the climate underneath changed.

How often, not how much — every day in WILMINGTON NEW CASTLE CO AP’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	<1%	27%	9%	30%	1.4–8.0°C
February	1%	26%	9%	28%	2.8–9.7°C
March	7%	27%	11%	33%	8.3–14.2°C
April	26%	28%	10%	32%	15.7–19.7°C
May	57%	28%	9%	36%	20.9–24.7°C
June	73%	26%	10%	28%	26.1–29.0°C
July	76%	24%	10%	25%	28.3–31.7°C
August	77%	23%	10%	23%	27.6–30.5°C
September	73%	22%	9%	23%	23.7–27.7°C
October	39%	20%	8%	19%	17.7–21.4°C
November	8%	24%	9%	23%	10.6–15.2°C
December	<1%	26%	10%	28%	3.7–10.0°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.

1932Each stripe is one year’s mean temperature against the 80-year average. Warmest: 2023. Coolest: 1958.2025

The evidence behind this page

Nearby, measured,
and named.

Place identity: GeoNames 4145395
NOAA station: USW00013781 · WILMINGTON NEW CASTLE CO AP
Station distance: 2.3 km from the place centre
Climate period: 1991–2020
Minimum month coverage: 30 usable years
Daylight: Calculated from latitude 39.69°, 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 WILMINGTON NEW CASTLE CO AP is what differs

Bear→Pennsville→New Castle→Salem→Delaware City→Newport→

Or put two places side by side: Wilmington Manor vs Bear

Best time to visitWilmington Manor.