United States · 1991–2020

Best time to visit
Erdman.

September leads for comfortable weather in Erdman: typically 22.4°C by day, 12.2°C at night, with 64 mm of rain. Based on measured 1991–2020 NOAA station history.

Best comfortSeptember

Typical high22.4°C

Typical low12.2°C

Rain in September64 mm

Comfort

September

September · June · August

81climate match

Beach

July

July · August · September

68climate match

Outdoors

September

September · May · October

78climate match

The weakest month is January, scoring 5 against September’s 81 — days reach only -0.6°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

5-0.6° / -9.6°

Feb

50.9° / -7.8°

Mar

55.6° / -3.5°

Apr

2311.8° / 1.9°

May

5017.5° / 7.1°

Jun

8023.8° / 12.9°

Jul

7427.4° / 16.4°

Aug

7626.6° / 16.5°

Sep

8122.4° / 12.2°

Oct

4715.6° / 5.5°

Nov

117.9° / -0.6°

Dec

52° / -6.4°

Monthly climate evidence for Erdman — daylight is calculated from latitude, everything else is measured, sea temperature from the nearest open water 14 km away
Month	Day	Night	Rain	Wet days	Sea	Daylight	Comfort	Coverage
January	-0.6°C	-9.6°C	51 mm	8.7	3.2°C	9 h 15	5	Good coverage
February	0.9°C	-7.8°C	44 mm	6.2	2.3°C	10 h 24	5	Good coverage
March	5.6°C	-3.5°C	49 mm	7.7	2.2°C	11 h 47	5	Good coverage
April	11.8°C	1.9°C	84 mm	9.4	3.1°C	13 h 22	23	Good coverage
May	17.5°C	7.1°C	90 mm	10.2	5.2°C	14 h 42	50	Good coverage
June	23.8°C	12.9°C	103 mm	9.6	11.1°C	15 h 26	80	Good coverage
July	27.4°C	16.4°C	86 mm	8.3	18.4°C	15 h 09	74	Good coverage
August	26.6°C	16.5°C	93 mm	7.8	20.6°C	13 h 59	76	Good coverage
September	22.4°C	12.2°C	64 mm	8.1	18.5°C	12 h 27	81	Good coverage
October	15.6°C	5.5°C	67 mm	7.5	12.6°C	10 h 56	47	Good coverage
November	7.9°C	-0.6°C	63 mm	7.1	7.5°C	9 h 35	11	Good coverage
December	2°C	-6.4°C	43 mm	7.1	4.8°C	8 h 56	5	Good coverage

Records at SHEBOYGAN, 1899–2008
Month	Record high	Record low	Wettest day	Wettest / driest month	Years
January	16.7°C26 Jan 1944	-32.2°C17 Jan 1982	42 mm31 Jan 1947	97 mm1916 · driest 1 mm in 1981	105
February	17.2°C23 Feb 1984	-31.7°C2 Feb 1996	68 mm21 Feb 1937	176 mm2008 · driest 0 mm in 1947	108
March	27.8°C26 Mar 2007	-24.4°C1 Mar 1962	66 mm31 Mar 1998	159 mm1976 · driest 3 mm in 1910	108
April	33.3°C22 Apr 1980	-12.2°C1 Apr 1923	54 mm11 Apr 2001	191 mm1929 · driest 9 mm in 1946	109
May	34.4°C30 May 1939	-5.0°C1 May 1914	107 mm30 May 1989	278 mm2004 · driest 14 mm in 1981	108
June	38.9°C21 Jun 1933	1.1°C4 Jun 1945	123 mm14 Jun 1926	278 mm2008 · driest 9 mm in 1964	108
July	42.2°C14 Jul 1995	6.1°C4 Jul 1927	112 mm31 Jul 2003	204 mm1952 · driest 8 mm in 1939	109
August	41.7°C25 Aug 1948	2.8°C30 Aug 1915	275 mm6 Aug 1998	338 mm1998 · driest 4 mm in 1969	109
September	38.3°C14 Sep 1939	-2.2°C24 Sep 1950	132 mm11 Sep 1986	335 mm1986 · driest 3 mm in 1979	108
October	32.2°C6 Oct 1963	-10.0°C30 Oct 1925	69 mm3 Oct 1900	193 mm1951 · driest 1 mm in 1924	107
November	26.1°C2 Nov 1950	-20.6°C29 Nov 1976	93 mm4 Nov 2003	174 mm1934 · driest 4 mm in 1904	108
December	18.3°C3 Dec 1998	-29.4°C24 Dec 1983	68 mm27 Dec 1942	129 mm1971 · driest 3 mm in 1960	108

Typical days per month at SHEBOYGAN, 1991–2020
Month	Days 25°C+	Days 30°C+	Frost nights	Heavy rain (10 mm+)	Snow days
January	0	0	28	2	7
February	0	0	25	1	5
March	<1	0	23	2	3
April	1	<1	8	3	1
May	3	<1	<1	3	0
June	12	4	0	3	0
July	21	8	0	3	0
August	20	6	0	3	0
September	9	2	0	2	0
October	2	<1	3	2	0
November	0	0	16	2	2
December	0	0	25	1	5

How often, not how much — every day in SHEBOYGAN’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%	22%	4%	19%	-5.7–1.6°C
February	0%	20%	4%	16%	-4.2–3.1°C
March	1%	22%	6%	22%	1.8–7.8°C
April	7%	27%	8%	32%	8.5–13.8°C
May	25%	28%	9%	32%	14.8–19.9°C
June	55%	29%	9%	32%	21.1–25.8°C
July	74%	24%	8%	23%	25.0–29.1°C
August	74%	24%	9%	22%	24.0–28.3°C
September	53%	26%	10%	28%	20.2–24.0°C
October	16%	23%	7%	24%	13.1–17.7°C
November	1%	22%	6%	20%	4.8–10.0°C
December	0%	21%	5%	20%	-3.2–3.9°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.

1903Each stripe is one year’s mean temperature against the 99-year average. Warmest: 1921. Coolest: 1917.2007

The evidence behind this page

Nearby, measured,
and named.

Place identity: GeoNames 5252071
NOAA station: USC00477725 · SHEBOYGAN
Station distance: 5.6 km from the place centre
Climate period: 1991–2020
Minimum month coverage: 16 usable years
Daylight: Calculated from latitude 43.79°, mid-month, sunrise to sunset including refraction. Not a station measurement.
Sea temperature: NOAA OISST v2.1 1991–2020 monthly climatology, nearest open water 14 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 SHEBOYGAN is what differs

Sheboygan→Kohler→Hayen→Mosel→

Or put two places side by side: Erdman vs Sheboygan

Best time to visitErdman.

September

July

September

The whole year,without the guesswork.

Nearby, measured,and named.

Best time to visit
Erdman.

The whole year,
without the guesswork.

Nearby, measured,
and named.