United States · 1991–2020

Best time to visit
Cape Girardeau.

September leads for comfortable weather in Cape Girardeau: typically 27.6°C by day, 14.1°C at night, with 92 mm of rain. Based on measured 1991–2020 NOAA station history.

Best comfortSeptember

Typical high27.6°C

Typical low14.1°C

Rain in September92 mm

Comfort

September

September · May · October

76climate match

Beach

August

August · July · June

76climate match

Outdoors

October

October · April · September

77climate match

The weakest month is January, scoring 5 against September’s 76 — days reach only 6.1°C, 18° 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

56.1° / -3.4°

Feb

109° / -1.5°

Mar

3014.5° / 2.8°

Apr

5820.7° / 8.2°

May

7325.7° / 14.1°

Jun

5930.3° / 18.6°

Jul

5231.8° / 20.5°

Aug

6031.3° / 18.9°

Sep

7627.6° / 14.1°

Oct

6821.6° / 7.8°

Nov

2813.8° / 2.4°

Dec

57.9° / -1.4°

Monthly climate evidence for Cape Girardeau — daylight is calculated from latitude, everything else is measured
Month	Day	Night	Rain	Wet days	Daylight	Comfort	Coverage
January	6.1°C	-3.4°C	89 mm	7.2	9 h 51	5	Strong coverage
February	9°C	-1.5°C	84 mm	6.9	10 h 45	10	Strong coverage
March	14.5°C	2.8°C	118 mm	8.6	11 h 51	30	Strong coverage
April	20.7°C	8.2°C	132 mm	9.1	13 h 06	58	Strong coverage
May	25.7°C	14.1°C	133 mm	9.6	14 h 09	73	Strong coverage
June	30.3°C	18.6°C	97 mm	8.2	14 h 43	59	Strong coverage
July	31.8°C	20.5°C	93 mm	7.7	14 h 30	52	Strong coverage
August	31.3°C	18.9°C	80 mm	6.3	13 h 35	60	Strong coverage
September	27.6°C	14.1°C	92 mm	5.9	12 h 23	76	Strong coverage
October	21.6°C	7.8°C	92 mm	6.8	11 h 10	68	Strong coverage
November	13.8°C	2.4°C	110 mm	8.1	10 h 07	28	Strong coverage
December	7.9°C	-1.4°C	93 mm	7.5	9 h 36	5	Strong coverage

What has changed

Cape Girardeau runs +0.8°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

+1.5

Feb

+1.5

Mar

+1.4

Apr

+0.3

May

+0.2

Jun

+0.4

Jul

-0.3

Aug

-0.2

Sep

+1.2

Oct

+0.7

Nov

+0.2

Dec

+2.5

September daytime highs, 2011–2025. Last recorded: 29.8°C.

Records at CAPE GIRARDEAU MUNI AP, 1960–2026
Month	Record high	Record low	Wettest day	Wettest / driest month	Years
January	22.8°C23 Jan 1967	-27.8°C11 Jan 1977	124 mm21 Jan 1999	301 mm1982 · driest 8 mm in 2011	66
February	26.1°C27 Feb 2024	-25.5°C19 Feb 2015	92 mm17 Feb 2022	246 mm1989 · driest 6 mm in 2024	66
March	29.4°C22 Mar 2026	-22.1°C6 Mar 2015	292 mm18 Mar 2008	453 mm2008 · driest 18 mm in 1966	65
April	32.8°C27 Apr 1989	-7.8°C8 Apr 2007	141 mm29 Apr 1983	521 mm2011 · driest 32 mm in 1971	65
May	36.1°C24 May 1996	-1.1°C17 May 1968	169 mm15 May 1986	429 mm1973 · driest 20 mm in 1994	65
June	41.7°C29 Jun 2012	6.1°C1 Jun 1972	106 mm25 Jun 2018	282 mm1989 · driest 18 mm in 1988	67
July	41.1°C6 Jul 2012	9.4°C27 Jul 1962	148 mm19 Jul 2001	272 mm2001 · driest 16 mm in 1999	67
August	40.6°C4 Aug 1964	7.2°C29 Aug 1986	125 mm13 Aug 2002	283 mm2023 · driest 0 mm in 2007	66
September	37.8°C6 Sep 1960	0.6°C30 Sep 1999	118 mm2 Sep 2003	260 mm1993 · driest 0 mm in 2004	66
October	34.4°C1 Oct 2019	-5.5°C20 Oct 2022	98 mm26 Oct 2019	270 mm1984 · driest 0 mm in 1964	66
November	28.9°C1 Nov 2016	-13.3°C29 Nov 1976	154 mm19 Nov 1991	248 mm2011 · driest 9 mm in 1976	66
December	24.4°C2 Dec 1982	-23.9°C22 Dec 1989	105 mm21 Dec 2013	313 mm1982 · driest 16 mm in 2005	66

Typical days per month at CAPE GIRARDEAU MUNI AP, 1991–2020
Month	Days 25°C+	Days 30°C+	Frost nights	Heavy rain (10 mm+)	Snow days
January	0	0	24	3	2
February	0	0	18	3	2
March	2	0	11	4	2
April	7	<1	2	4	0
May	19	6	0	4	0
June	28	18	0	3	0
July	31	24	0	3	0
August	30	22	0	2	0
September	23	10	0	3	0
October	10	2	2	3	<1
November	<1	0	12	3	<1
December	0	0	20	3	2

The best month has moved. On the 1961–1990 numbers the strongest month here was September (scoring 81); on 2011–2025 it is May (78). Both are scored the same way, from the same station — only the climate underneath changed.

How often, not how much — every day in CAPE GIRARDEAU MUNI AP’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%	23%	8%	22%	2.7–8.8°C
February	4%	25%	9%	25%	4.7–12.0°C
March	18%	28%	13%	33%	10.8–17.5°C
April	42%	30%	13%	38%	18.2–22.5°C
May	63%	31%	13%	40%	23.7–28.5°C
June	75%	25%	11%	27%	28.6–31.9°C
July	76%	24%	11%	22%	30.4–33.7°C
August	80%	20%	8%	19%	29.7–33.0°C
September	77%	20%	9%	16%	25.4–29.5°C
October	53%	21%	9%	22%	19.4–23.6°C
November	14%	25%	11%	28%	11.0–16.5°C
December	1%	25%	11%	28%	5.0–10.8°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.

1961Each stripe is one year’s mean temperature against the 64-year average. Warmest: 2024. Coolest: 1979.2025

The evidence behind this page

Nearby, measured,
and named.

Place identity: GeoNames 4379966
NOAA station: USW00003935 · CAPE GIRARDEAU MUNI AP
Station distance: 10.4 km from the place centre
Climate period: 1991–2020
Minimum month coverage: 28 usable years
Daylight: Calculated from latitude 37.31°, 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 CAPE GIRARDEAU MUNI AP is what differs

Scott City→Chaffee→Oran→Benton→Kelso→Delta→

Or put two places side by side: Cape Girardeau vs Scott City

Best time to visitCape Girardeau.