United States · 1991–2020

Best time to visit
Iola.

September leads for comfortable weather in Iola: typically 27.1°C by day, 14.6°C at night, with 110 mm of rain. Based on measured 1991–2020 NOAA station history.

Best comfortSeptember

Typical high27.1°C

Typical low14.6°C

Rain in September110 mm

Comfort

September

September · May · October

76climate match

Beach

August

August · July · June

73climate match

Outdoors

October

October · April · November

80climate match

The weakest month is January, scoring 5 against September’s 76 — days reach only 5.5°C, 18° below the 24°C the score treats as ideal, and nights drop to -5.9°C.

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

55.5° / -5.9°

Feb

138.5° / -3.8°

Mar

3614.2° / 1.5°

Apr

5619.6° / 7°

May

7524.1° / 13.1°

Jun

5929.1° / 18.4°

Jul

4931.6° / 20.7°

Aug

5631.2° / 19.3°

Sep

7627.1° / 14.6°

Oct

6620.8° / 7.9°

Nov

3613.5° / 1.5°

Dec

87.1° / -3.8°

Monthly climate evidence for Iola — daylight is calculated from latitude, everything else is measured
Month	Day	Night	Rain	Wet days	Daylight	Comfort	Coverage
January	5.5°C	-5.9°C	32 mm	4.3	9 h 48	5	Strong coverage
February	8.5°C	-3.8°C	39 mm	4.4	10 h 43	13	Strong coverage
March	14.2°C	1.5°C	67 mm	6.4	11 h 50	36	Strong coverage
April	19.6°C	7°C	112 mm	7.9	13 h 07	56	Strong coverage
May	24.1°C	13.1°C	149 mm	9.4	14 h 12	75	Strong coverage
June	29.1°C	18.4°C	136 mm	7.6	14 h 47	59	Strong coverage
July	31.6°C	20.7°C	120 mm	7.2	14 h 33	49	Strong coverage
August	31.2°C	19.3°C	102 mm	6.5	13 h 38	56	Strong coverage
September	27.1°C	14.6°C	110 mm	6.1	12 h 23	76	Strong coverage
October	20.8°C	7.9°C	92 mm	6.5	11 h 09	66	Strong coverage
November	13.5°C	1.5°C	62 mm	4.9	10 h 04	36	Strong coverage
December	7.1°C	-3.8°C	46 mm	4.1	9 h 33	8	Strong coverage

What has changed

Iola runs -0.5°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

+0.5

Feb

-0.8

Mar

-0.2

Apr

-2.0

May

-1.8

Jun

-0.2

Jul

-1.2

Aug

-1.3

Sep

+0.2

Oct

-0.7

Nov

-0.1

Dec

+1.4

September daytime highs, 2011–2025. Last recorded: 26.4°C.

Records at IOLA 1 W, 1959–2026
Month	Record high	Record low	Wettest day	Wettest / driest month	Years
January	23.3°C29 Jan 2015	-26.7°C8 Jan 1979	61 mm3 Jan 1971	104 mm1973 · driest 0 mm in 2012	68
February	28.9°C12 Feb 1962	-31.1°C10 Feb 2011	102 mm20 Feb 1997	129 mm1997 · driest 0 mm in 1996	68
March	33.9°C22 Mar 2026	-18.3°C6 Mar 1960	71 mm20 Mar 2012	265 mm1973 · driest 10 mm in 1971	68
April	35.0°C12 Apr 1972	-7.2°C7 Apr 2007	146 mm28 Apr 1994	343 mm1994 · driest 5 mm in 1989	68
May	35.6°C26 May 1964	-2.2°C1 May 1963	123 mm26 May 1990	424 mm2019 · driest 23 mm in 1998	68
June	41.1°C27 Jun 1980	7.2°C5 Jun 1998	159 mm30 Jun 2007	393 mm2007 · driest 23 mm in 1988	68
July	42.8°C12 Jul 1980	10.0°C31 Jul 1971	130 mm1 Jul 2007	447 mm1992 · driest 1 mm in 1974	68
August	42.2°C3 Aug 2011	7.2°C31 Aug 2009	145 mm22 Aug 1985	381 mm2019 · driest 0 mm in 2000	67
September	40.6°C3 Sep 2000	-1.1°C30 Sep 1984	206 mm4 Sep 2021	323 mm1973 · driest 1 mm in 1979	66
October	35.6°C2 Oct 1963	-7.8°C31 Oct 1993	141 mm3 Oct 1986	330 mm1986 · driest 3 mm in 1965	67
November	28.3°C6 Nov 1980	-16.1°C27 Nov 1975	101 mm21 Nov 1979	261 mm1992 · driest 0 mm in 1989	67
December	25.6°C3 Dec 2021	-28.3°C23 Dec 1989	61 mm15 Dec 1975	137 mm1992 · driest 0 mm in 1996	67

Typical days per month at IOLA 1 W, 1991–2020
Month	Days 25°C+	Days 30°C+	Frost nights	Heavy rain (10 mm+)	Snow days
January	0	0	27	<1	2
February	<1	0	22	1	1
March	2	<1	14	2	<1
April	6	<1	3	3	0
May	16	3	<1	5	0
June	27	14	0	4	0
July	30	22	0	3	0
August	29	20	0	3	0
September	21	9	<1	3	0
October	9	2	2	3	0
November	<1	0	13	2	<1
December	0	0	24	2	1

The best month has moved. On the 1961–1990 numbers the strongest month here was May (scoring 79); on 2011–2025 it is September (78). Both are scored the same way, from the same station — only the climate underneath changed.

How often, not how much — every day in IOLA 1 W’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%	14%	3%	10%	1.8–8.7°C
February	6%	15%	4%	11%	4.0–12.3°C
March	23%	21%	7%	20%	11.1–17.4°C
April	46%	26%	10%	28%	17.8–22.7°C
May	62%	30%	14%	37%	22.3–27.2°C
June	73%	28%	13%	33%	27.5–31.4°C
July	78%	22%	10%	21%	30.4–34.7°C
August	79%	21%	9%	21%	29.1–34.0°C
September	76%	22%	10%	22%	25.2–29.8°C
October	54%	20%	9%	20%	19.2–23.6°C
November	17%	16%	6%	12%	10.5–16.4°C
December	2%	13%	4%	8%	4.0–9.8°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.

1959Each stripe is one year’s mean temperature against the 66-year average. Warmest: 2012. Coolest: 2008.2025

The evidence behind this page

Nearby, measured,
and named.

Place identity: GeoNames 4273441
NOAA station: USC00143984 · IOLA 1 W
Station distance: 2.1 km from the place centre
Climate period: 1991–2020
Minimum month coverage: 30 usable years
Daylight: Calculated from latitude 37.92°, 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 IOLA 1 W is what differs

La Harpe→Gas→Moran→Colony→Bronson→Neosho Falls→

Or put two places side by side: Iola vs La Harpe

Best time to visitIola.