United States · 1991–2020

Best time to visit
Dell Rapids.

August leads for comfortable weather in Dell Rapids: typically 26.7°C by day, 14.7°C at night, with 93 mm of rain. Based on measured 1991–2020 NOAA station history.

Best comfortAugust

Typical high26.7°C

Typical low14.7°C

Rain in August93 mm

Comfort

August

August · September · July

79climate match

Beach

July

July · August · June

73climate match

Outdoors

May

May · September · October

76climate match

The weakest month is January, scoring 5 against August’s 79 — days reach only -4.2°C, 28° 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

5-4.2° / -13.9°

Feb

5-2.6° / -12.9°

Mar

56.1° / -4.7°

Apr

3214° / 1.3°

May

6120.5° / 8°

Jun

7326.1° / 14.2°

Jul

7428.5° / 16.2°

Aug

7926.7° / 14.7°

Sep

7823.3° / 10.2°

Oct

4114.6° / 2.4°

Nov

76.7° / -4.7°

Dec

5-1.7° / -11.2°

Monthly climate evidence for Dell Rapids — daylight is calculated from latitude, everything else is measured
Month	Day	Night	Rain	Wet days	Daylight	Comfort	Coverage
January	-4.2°C	-13.9°C	18 mm	3.8	9 h 15	5	Good coverage
February	-2.6°C	-12.9°C	25 mm	4.4	10 h 24	5	Good coverage
March	6.1°C	-4.7°C	44 mm	5.4	11 h 47	5	Good coverage
April	14°C	1.3°C	76 mm	7.8	13 h 22	32	Good coverage
May	20.5°C	8°C	97 mm	9.8	14 h 42	61	Good coverage
June	26.1°C	14.2°C	126 mm	9.1	15 h 26	73	Good coverage
July	28.5°C	16.2°C	81 mm	6.4	15 h 09	74	Good coverage
August	26.7°C	14.7°C	93 mm	6.9	13 h 59	79	Good coverage
September	23.3°C	10.2°C	88 mm	6.9	12 h 27	78	Good coverage
October	14.6°C	2.4°C	56 mm	5.8	10 h 56	41	Good coverage
November	6.7°C	-4.7°C	26 mm	3.2	9 h 35	7	Good coverage
December	-1.7°C	-11.2°C	29 mm	4.6	8 h 56	5	Good coverage

Records at SIOUX FALLS 14 NNE, 2002–2026
Month	Record high	Record low	Wettest day	Wettest / driest month	Years
January	17.2°C5 Jan 2012	-35.1°C2 Jan 2010	22 mm8 Jan 2024	48 mm2023 · driest 1 mm in 2025	24
February	19.3°C26 Feb 2024	-30.9°C15 Feb 2021	31 mm28 Feb 2012	57 mm2012 · driest 2 mm in 2026	24
March	30.5°C21 Mar 2026	-28.7°C3 Mar 2019	48 mm13 Mar 2019	107 mm2019 · driest 11 mm in 2015	24
April	32.8°C30 Apr 2007	-15.1°C4 Apr 2018	58 mm6 Apr 2006	159 mm2019 · driest 23 mm in 2023	24
May	36.5°C27 May 2018	-4.9°C3 May 2005	61 mm29 May 2004	188 mm2012 · driest 30 mm in 2009	24
June	37.1°C21 Jun 2025	5.2°C12 Jun 2012	103 mm16 Jun 2014	413 mm2014 · driest 19 mm in 2012	24
July	39.3°C6 Jul 2012	6.1°C28 Jul 2013	95 mm5 Jul 2022	191 mm2008 · driest 10 mm in 2012	24
August	38.3°C30 Aug 2012	4.5°C21 Aug 2004	99 mm5 Aug 2023	203 mm2006 · driest 21 mm in 2020	23
September	35.9°C2 Sep 2023	-2.9°C23 Sep 2012	81 mm19 Sep 2018	225 mm2019 · driest 3 mm in 2024	23
October	33.5°C1 Oct 2023	-16.3°C27 Oct 2020	56 mm6 Oct 2008	147 mm2009 · driest 3 mm in 2017	24
November	26.8°C6 Nov 2020	-22.5°C16 Nov 2014	33 mm18 Nov 2015	82 mm2015 · driest 1 mm in 2007	24
December	14.8°C2 Dec 2012	-33.9°C18 Dec 2016	26 mm15 Dec 2014	55 mm2009 · driest 3 mm in 2004	24

Typical days per month at SIOUX FALLS 14 NNE, 1991–2020
Month	Days 25°C+	Days 30°C+	Frost nights	Heavy rain (10 mm+)
January	0	0	31	<1
February	0	0	28	<1
March	<1	0	24	1
April	2	<1	11	3
May	7	2	1	4
June	19	6	0	4
July	26	10	0	3
August	22	5	0	3
September	13	3	<1	3
October	2	<1	10	2
November	<1	0	24	<1
December	0	0	30	<1

How often, not how much — every day in SIOUX FALLS 14 NNE’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%	12%	1%	7%	-6.2–-1.5°C
February	0%	15%	1%	6%	-6.7–4.2°C
March	7%	18%	5%	17%	1.8–11.2°C
April	20%	25%	8%	28%	11.5–17.0°C
May	45%	30%	11%	37%	18.7–22.8°C
June	67%	30%	12%	36%	24.7–28.6°C
July	79%	21%	8%	17%	26.6–30.0°C
August	77%	22%	9%	16%	25.4–28.6°C
September	64%	21%	8%	22%	21.6–26.0°C
October	26%	18%	5%	16%	11.3–18.3°C
November	4%	10%	3%	5%	3.9–9.8°C
December	0%	15%	3%	8%	-5.4–2.4°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.

2003Each stripe is one year’s mean temperature against the 23-year average. Warmest: 2012. Coolest: 2008.2025

The evidence behind this page

Nearby, measured,
and named.

Place identity: GeoNames 5227270
NOAA station: USW00004990 · SIOUX FALLS 14 NNE
Station distance: 12.2 km from the place centre
Climate period: 1991–2020
Minimum month coverage: 18 usable years
Daylight: Calculated from latitude 43.83°, 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 FALLS 14 NNE is what differs

Garretson→Baltic→Valley Springs→Beaver Creek→Sherman→Manley→

Or put two places side by side: Dell Rapids vs Garretson

Best time to visitDell Rapids.

August

July

May

The whole year,without the guesswork.

Nearby, measured,and named.

Best time to visit
Dell Rapids.

The whole year,
without the guesswork.

Nearby, measured,
and named.