United States · 1991–2020

Best time to visit
Perry.

September leads for comfortable weather in Perry: typically 26.4°C by day, 13.2°C at night, with 99 mm of rain. Based on measured 1991–2020 NOAA station history.

Best comfortSeptember

Typical high26.4°C

Typical low13.2°C

Rain in September99 mm

Comfort

September

September · May · June

77climate match

Beach

July

July · August · June

72climate match

Outdoors

October

October · April · May

82climate match

The weakest month is January, scoring 5 against September’s 77 — days reach only 2.6°C, 21° 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

52.6° / -8.2°

Feb

56° / -5.8°

Mar

2411.8° / -0.4°

Apr

4918.3° / 5.7°

May

7523.8° / 11.7°

Jun

6428.8° / 17°

Jul

5630.9° / 19.2°

Aug

6130.4° / 18°

Sep

7726.4° / 13.2°

Oct

6219.9° / 7°

Nov

2912.2° / 1°

Dec

55° / -4.9°

Monthly climate evidence for Perry — daylight is calculated from latitude, everything else is measured
Month	Day	Night	Rain	Wet days	Daylight	Comfort	Coverage
January	2.6°C	-8.2°C	43 mm	4.7	9 h 40	5	Strong coverage
February	6°C	-5.8°C	50 mm	5.1	10 h 39	5	Good coverage
March	11.8°C	-0.4°C	67 mm	7.1	11 h 49	24	Strong coverage
April	18.3°C	5.7°C	102 mm	9.1	13 h 11	49	Strong coverage
May	23.8°C	11.7°C	122 mm	9.8	14 h 19	75	Strong coverage
June	28.8°C	17°C	116 mm	8.1	14 h 56	64	Strong coverage
July	30.9°C	19.2°C	106 mm	7.3	14 h 41	56	Strong coverage
August	30.4°C	18°C	104 mm	6.2	13 h 43	61	Strong coverage
September	26.4°C	13.2°C	99 mm	6.3	12 h 24	77	Strong coverage
October	19.9°C	7°C	81 mm	7	11 h 06	62	Strong coverage
November	12.2°C	1°C	65 mm	5.9	9 h 57	29	Strong coverage
December	5°C	-4.9°C	44 mm	4.9	9 h 24	5	Good coverage

Records at CLARENCE CANNON DAM, 1989–2026
Month	Record high	Record low	Wettest day	Wettest / driest month	Years
January	21.1°C17 Jan 1990	-24.4°C30 Jan 2019	64 mm29 Jan 2001	108 mm2005 · driest 1 mm in 2022	37
February	26.7°C28 Feb 2024	-27.2°C4 Feb 1996	125 mm21 Feb 1997	174 mm1997 · driest 0 mm in 2026	33
March	31.7°C27 Mar 2026	-21.7°C4 Mar 2014	67 mm27 Mar 2018	134 mm1990 · driest 18 mm in 2011	37
April	33.3°C28 Apr 1989	-7.2°C8 Apr 2007	79 mm28 Apr 2009	237 mm2009 · driest 5 mm in 2015	37
May	33.9°C28 May 2006	-3.9°C8 May 1989	74 mm24 May 1995	300 mm1995 · driest 13 mm in 2012	36
June	40.0°C29 Jun 2012	6.7°C5 Jun 1993	103 mm15 Jun 2017	208 mm1998 · driest 6 mm in 2023	37
July	41.1°C24 Jul 2005	9.4°C22 Jul 1989	136 mm20 Jul 2010	384 mm2010 · driest 10 mm in 2011	38
August	40.6°C3 Aug 2011	8.3°C15 Aug 2004	135 mm10 Aug 1992	236 mm2004 · driest 3 mm in 2012	36
September	39.4°C2 Sep 2011	-2.8°C22 Sep 1995	156 mm1 Sep 2003	300 mm1993 · driest 4 mm in 2017	35
October	34.4°C4 Oct 2006	-5.0°C31 Oct 1993	95 mm2 Oct 2014	227 mm2009 · driest 9 mm in 2010	37
November	27.8°C3 Nov 2016	-16.7°C8 Nov 1991	58 mm30 Nov 2006	193 mm1992 · driest 4 mm in 2017	35
December	22.8°C16 Dec 2021	-28.9°C23 Dec 1989	56 mm10 Dec 2003	96 mm1999 · driest 0 mm in 2010	35

Typical days per month at CLARENCE CANNON DAM, 1991–2020
Month	Days 25°C+	Days 30°C+	Frost nights	Heavy rain (10 mm+)	Snow days
January	0	0	19	1	3
February	0	0	17	1	2
March	1	0	14	2	<1
April	5	<1	4	3	<1
May	13	3	<1	3	0
June	22	12	0	3	0
July	26	17	0	3	0
August	25	15	0	3	0
September	16	7	<1	3	0
October	6	1	3	3	0
November	<1	0	12	2	<1
December	0	0	17	1	2

How often, not how much — every day in CLARENCE CANNON DAM’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%	15%	4%	11%	-0.2–6.3°C
February	4%	17%	5%	9%	1.4–9.5°C
March	13%	23%	9%	21%	7.9–16.0°C
April	32%	29%	11%	35%	15.5–21.4°C
May	55%	30%	12%	35%	21.5–25.8°C
June	70%	26%	12%	31%	27.3–30.6°C
July	76%	22%	11%	22%	28.9–33.0°C
August	79%	20%	9%	16%	28.3–32.4°C
September	72%	20%	8%	20%	24.1–29.1°C
October	43%	22%	9%	24%	17.7–22.4°C
November	14%	18%	7%	16%	8.3–16.6°C
December	1%	15%	4%	7%	1.2–7.8°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.

1990Each stripe is one year’s mean temperature against the 20-year average. Warmest: 1998. Coolest: 1993.2010

The evidence behind this page

Nearby, measured,
and named.

Place identity: GeoNames 4402973
NOAA station: USC00231600 · CLARENCE CANNON DAM
Station distance: 11.6 km from the place centre
Climate period: 1991–2020
Minimum month coverage: 23 usable years
Daylight: Calculated from latitude 39.43°, 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 CLARENCE CANNON DAM is what differs

Monroe City→Center→Stoutsville→The Landing→Buzzards Roost→Cincinnati→

Or put two places side by side: Perry vs Monroe City

Best time to visitPerry.