United States · 1991–2020

Best time to visit
De Soto.

September leads for comfortable weather in De Soto: typically 24.3°C by day, 10.8°C at night, with 91 mm of rain. Based on measured 1991–2020 NOAA station history.

Best comfortSeptember

Typical high24.3°C

Typical low10.8°C

Rain in September91 mm

Comfort

September

September · June · August

80climate match

Beach

July

July · August · June

71climate match

Outdoors

October

October · September · May

75climate match

The weakest month is January, scoring 5 against September’s 80 — 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

52.4° / -8.5°

Mar

149.2° / -2.9°

Apr

3816.3° / 3.2°

May

6321.7° / 9.6°

Jun

7526.7° / 15.2°

Jul

6428.9° / 17.5°

Aug

7328.1° / 16°

Sep

8024.3° / 10.8°

Oct

5317.7° / 4.5°

Nov

169.1° / -2.1°

Dec

51.5° / -8.4°

Monthly climate evidence for De Soto — 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	21 mm	4.6	9 h 29	5	Strong coverage
February	2.4°C	-8.5°C	29 mm	4.7	10 h 32	5	Good coverage
March	9.2°C	-2.9°C	53 mm	6.2	11 h 48	14	Good coverage
April	16.3°C	3.2°C	101 mm	9.5	13 h 16	38	Good coverage
May	21.7°C	9.6°C	127 mm	10.3	14 h 30	63	Good coverage
June	26.7°C	15.2°C	112 mm	9	15 h 10	75	Good coverage
July	28.9°C	17.5°C	112 mm	8.5	14 h 54	64	Good coverage
August	28.1°C	16°C	93 mm	7.5	13 h 50	73	Good coverage
September	24.3°C	10.8°C	91 mm	6.5	12 h 25	80	Good coverage
October	17.7°C	4.5°C	65 mm	6.2	11 h 01	53	Strong coverage
November	9.1°C	-2.1°C	49 mm	5.1	9 h 47	16	Strong coverage
December	1.5°C	-8.4°C	31 mm	5.2	9 h 11	5	Strong coverage

Records at WINTERSET 4N, 1893–2026
Month	Record high	Record low	Wettest day	Wettest / driest month	Years
January	19.4°C27 Jan 2002	-36.7°C12 Jan 1912	75 mm12 Jan 1960	132 mm1949 · driest 0 mm in 1919	126
February	26.1°C24 Feb 1930	-35.0°C17 Feb 1958	40 mm1 Feb 1973	94 mm1911 · driest 0 mm in 2026	121
March	33.3°C22 Mar 2026	-37.2°C1 Mar 1962	61 mm6 Mar 2026	151 mm1990 · driest 0 mm in 1994	120
April	33.9°C28 Apr 1910	-12.2°C2 Apr 1970	87 mm18 Apr 1976	250 mm1897 · driest 10 mm in 1926	120
May	40.6°C29 May 1934	-4.4°C10 May 1981	95 mm9 May 2004	270 mm1996 · driest 24 mm in 1925	123
June	40.6°C26 Jun 1934	1.1°C3 Jun 1969	133 mm21 Jun 1952	393 mm1947 · driest 7 mm in 1911	124
July	43.9°C19 Jul 1934	4.4°C7 Jul 1896	114 mm21 Jul 1948	289 mm1896 · driest 6 mm in 1936	126
August	44.4°C8 Aug 1934	2.8°C30 Aug 1915	139 mm24 Aug 1946	335 mm1977 · driest 8 mm in 2013	125
September	39.4°C3 Sep 1939	-4.4°C29 Sep 1899	127 mm15 Sep 1992	274 mm1936 · driest 0 mm in 2024	122
October	33.9°C2 Oct 1953	-16.1°C28 Oct 1925	99 mm6 Oct 1931	220 mm1941 · driest 0 mm in 1952	124
November	27.8°C1 Nov 1938	-22.2°C30 Nov 1976	82 mm17 Nov 1952	159 mm1931 · driest 0 mm in 1989	126
December	20.6°C6 Dec 1939	-31.7°C23 Dec 1989	67 mm31 Dec 2007	135 mm2007 · driest 0 mm in 1901	124

Typical days per month at WINTERSET 4N, 1991–2020
Month	Days 25°C+	Days 30°C+	Frost nights	Heavy rain (10 mm+)	Snow days
January	0	0	30	<1	4
February	0	0	25	<1	4
March	<1	0	21	2	2
April	3	<1	9	4	<1
May	10	2	<1	4	<1
June	21	7	0	4	0
July	27	12	0	4	0
August	25	10	0	3	0
September	14	4	<1	3	0
October	4	<1	8	2	<1
November	<1	0	19	2	1
December	0	0	28	<1	4

How often, not how much — every day in WINTERSET 4N’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%	14%	2%	8%	-5.2–3.8°C
February	<1%	15%	3%	10%	-2.4–6.2°C
March	9%	20%	5%	17%	4.9–13.3°C
April	27%	28%	10%	33%	13.9–19.5°C
May	52%	31%	12%	38%	20.4–25.3°C
June	69%	29%	13%	33%	25.5–30.2°C
July	76%	24%	10%	22%	28.1–33.2°C
August	75%	24%	10%	25%	26.9–32.3°C
September	66%	24%	11%	25%	22.6–27.6°C
October	40%	19%	6%	18%	15.8–21.8°C
November	7%	15%	5%	11%	6.1–12.7°C
December	0%	14%	3%	8%	-2.4–5.4°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.

1894Each stripe is one year’s mean temperature against the 110-year average. Warmest: 1931. Coolest: 2008.2025

The evidence behind this page

Nearby, measured,
and named.

Place identity: GeoNames 4853537
NOAA station: USC00139132 · WINTERSET 4N
Station distance: 14.4 km from the place centre
Climate period: 1991–2020
Minimum month coverage: 23 usable years
Daylight: Calculated from latitude 41.53°, 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 WINTERSET 4N is what differs

Winterset→Adel→Earlham→Buffalo (historical)→Van Meter→Redfield→

Or put two places side by side: De Soto vs Winterset

Best time to visitDe Soto.