United States · 1991–2020

Best time to visit
Sioux Center.

September leads for comfortable weather in Sioux Center: typically 25.3°C by day, 10.5°C at night, with 82 mm of rain. Based on measured 1991–2020 NOAA station history.

Best comfortSeptember

Typical high25.3°C

Typical low10.5°C

Rain in September82 mm

Comfort

September

September · August · May

78climate match

Beach

July

July · August · June

73climate match

Outdoors

October

October · September · May

74climate match

The weakest month is January, scoring 5 against September’s 78 — days reach only -2.3°C, 26° 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

5-2.3° / -12.6°

Feb

50.7° / -10.1°

Mar

118.2° / -3.8°

Apr

4216.5° / 2.3°

May

7023.2° / 9.1°

Jun

6928.3° / 14.9°

Jul

6829.7° / 16.6°

Aug

7428.3° / 15.3°

Sep

7825.3° / 10.5°

Oct

5317.9° / 3.7°

Nov

128° / -3.6°

Dec

50° / -9.7°

Monthly climate evidence for Sioux Center — daylight is calculated from latitude, everything else is measured
Month	Day	Night	Rain	Wet days	Daylight	Comfort	Coverage
January	-2.3°C	-12.6°C	17 mm	3.9	9 h 19	5	Strong coverage
February	0.7°C	-10.1°C	21 mm	3.9	10 h 27	5	Strong coverage
March	8.2°C	-3.8°C	44 mm	5.2	11 h 47	11	Strong coverage
April	16.5°C	2.3°C	76 mm	8	13 h 20	42	Strong coverage
May	23.2°C	9.1°C	105 mm	10.1	14 h 38	70	Strong coverage
June	28.3°C	14.9°C	114 mm	9.3	15 h 21	69	Strong coverage
July	29.7°C	16.6°C	88 mm	6.6	15 h 04	68	Strong coverage
August	28.3°C	15.3°C	86 mm	7.5	13 h 56	74	Strong coverage
September	25.3°C	10.5°C	82 mm	6.6	12 h 26	78	Strong coverage
October	17.9°C	3.7°C	62 mm	6.1	10 h 57	53	Strong coverage
November	8°C	-3.6°C	35 mm	4.3	9 h 39	12	Strong coverage
December	0°C	-9.7°C	25 mm	4.3	9 h 01	5	Strong coverage

What has changed

Sioux Center runs +1.2°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

+2.1

Feb

+0.5

Mar

+2.4

Apr

-0.5

May

+0.1

Jun

+0.9

Jul

0.0

Aug

+0.1

Sep

+2.4

Oct

+1.0

Nov

+2.3

Dec

+2.7

September daytime highs, 2011–2025. Last recorded: 27.5°C.

Records at SIOUX CTR 2 SE, 1899–2026
Month	Record high	Record low	Wettest day	Wettest / driest month	Years
January	20.0°C26 Jan 2002	-38.3°C12 Jan 1912	31 mm31 Jan 1926	57 mm1975 · driest 0 mm in 1961	111
February	20.6°C26 Feb 2024	-36.1°C2 Feb 1917	31 mm1 Feb 1922	86 mm1915 · driest 0 mm in 2026	110
March	32.2°C22 Mar 2026	-28.3°C5 Mar 1960	66 mm23 Mar 1987	119 mm1979 · driest 0 mm in 1994	112
April	35.0°C29 Apr 2007	-18.3°C3 Apr 1975	100 mm22 Apr 1985	232 mm1985 · driest 7 mm in 1969	112
May	40.6°C30 May 1934	-8.3°C3 May 1967	117 mm27 May 2013	304 mm2013 · driest 8 mm in 1925	111
June	40.6°C22 Jun 1988	0.6°C15 Jun 1989	109 mm22 Jun 1974	325 mm2018 · driest 4 mm in 1933	109
July	42.8°C17 Jul 1936	3.3°C5 Jul 1972	166 mm15 Jul 1900	313 mm1900 · driest 0 mm in 2007	112
August	42.8°C3 Aug 1930	2.8°C28 Aug 1986	179 mm5 Aug 2023	253 mm1928 · driest 12 mm in 1970	113
September	38.9°C2 Sep 1925	-6.1°C26 Sep 1984	152 mm17 Sep 1926	410 mm1926 · driest 4 mm in 1899	113
October	33.3°C3 Oct 2006	-18.9°C30 Oct 1925	72 mm6 Oct 1903	151 mm1998 · driest 0 mm in 1989	112
November	26.1°C8 Nov 1999	-28.9°C14 Nov 1959	61 mm10 Nov 1998	133 mm1983 · driest 0 mm in 1914	112
December	18.9°C1 Dec 1998	-35.6°C29 Dec 1917	35 mm13 Dec 2022	79 mm1982 · driest 1 mm in 1913	111

Typical days per month at SIOUX CTR 2 SE, 1991–2020
Month	Days 25°C+	Days 30°C+	Frost nights	Heavy rain (10 mm+)	Snow days
January	0	0	31	<1	4
February	0	0	27	<1	4
March	<1	0	23	2	3
April	4	<1	11	3	1
May	13	5	1	3	0
June	24	12	0	4	0
July	28	16	0	3	0
August	26	10	0	3	0
September	18	5	1	2	0
October	5	1	9	2	<1
November	<1	0	22	1	2
December	0	0	30	<1	4

How often, not how much — every day in SIOUX CTR 2 SE’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%	1%	7%	-7.9–1.5°C
February	<1%	13%	2%	8%	-4.8–5.1°C
March	7%	17%	4%	13%	2.4–11.7°C
April	26%	24%	8%	27%	12.7–19.5°C
May	51%	30%	11%	35%	19.7–25.2°C
June	69%	28%	12%	31%	24.8–30.1°C
July	78%	22%	9%	18%	27.7–32.0°C
August	77%	22%	9%	19%	26.4–30.4°C
September	66%	21%	9%	20%	21.5–27.2°C
October	35%	16%	5%	13%	14.3–20.4°C
November	3%	13%	3%	10%	3.5–10.7°C
December	0%	13%	2%	8%	-4.6–3.4°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.

1900Each stripe is one year’s mean temperature against the 95-year average. Warmest: 2012. Coolest: 1917.2025

The evidence behind this page

Nearby, measured,
and named.

Place identity: GeoNames 4876510
NOAA station: USC00137700 · SIOUX CTR 2 SE
Station distance: 3.3 km from the place centre
Climate period: 1991–2020
Minimum month coverage: 29 usable years
Daylight: Calculated from latitude 43.08°, 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 SIOUX CTR 2 SE is what differs

Orange City→Rock Valley→Hull→Alton→Maurice→Candlelight Village Mobile Home Park→

Or put two places side by side: Sioux Center vs Orange City

Best time to visitSioux Center.