United States · 1991–2020

Best time to visit
Dayton.

May leads for comfortable weather in Dayton: typically 25.6°C by day, 13.2°C at night, with 125 mm of rain. Based on measured 1991–2020 NOAA station history.

Best comfortMay

Typical high25.6°C

Typical low13.2°C

Rain in May125 mm

Comfort

May

May · September · October

73climate match

Beach

August

August · June · July

73climate match

Outdoors

October

October · April · May

78climate match

The weakest month is January, scoring 5 against May’s 73 — days reach only 8.5°C, 15° 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

58.5° / -1.5°

Feb

1311.3° / 0.3°

Mar

3416.1° / 3.6°

Apr

6121.7° / 8.3°

May

7325.6° / 13.2°

Jun

6129.4° / 17.7°

Jul

4730.9° / 19.8°

Aug

5630.8° / 19.3°

Sep

7127.6° / 15.6°

Oct

7021.7° / 9°

Nov

3415.4° / 3.3°

Dec

510.2° / 0.1°

Monthly climate evidence for Dayton — daylight is calculated from latitude, everything else is measured
Month	Day	Night	Rain	Wet days	Daylight	Comfort	Coverage
January	8.5°C	-1.5°C	132 mm	8.6	10 h	5	Strong coverage
February	11.3°C	0.3°C	129 mm	8.6	10 h 50	13	Strong coverage
March	16.1°C	3.6°C	131 mm	9.6	11 h 52	34	Strong coverage
April	21.7°C	8.3°C	134 mm	8.4	13 h 02	61	Strong coverage
May	25.6°C	13.2°C	125 mm	9.2	14 h 01	73	Strong coverage
June	29.4°C	17.7°C	111 mm	9.6	14 h 32	61	Strong coverage
July	30.9°C	19.8°C	139 mm	11	14 h 20	47	Strong coverage
August	30.8°C	19.3°C	97 mm	8.8	13 h 30	56	Strong coverage
September	27.6°C	15.6°C	124 mm	7.4	12 h 21	71	Strong coverage
October	21.7°C	9°C	92 mm	7	11 h 13	70	Strong coverage
November	15.4°C	3.3°C	124 mm	7.2	10 h 15	34	Strong coverage
December	10.2°C	0.1°C	152 mm	9.3	9 h 46	5	Strong coverage

What has changed

Dayton runs -0.1°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

+0.2

Feb

+1.3

Mar

-0.5

Apr

-1.3

May

-1.0

Jun

-0.6

Jul

-0.5

Aug

-0.7

Sep

+0.1

Oct

0.0

Nov

+0.2

Dec

+1.4

May daytime highs, 2011–2025. Last recorded: 23.5°C.

Records at DAYTON 2SE, 1956–2026
Month	Record high	Record low	Wettest day	Wettest / driest month	Years
January	23.9°C13 Jan 1972	-26.1°C21 Jan 1985	79 mm9 Jan 2024	259 mm2024 · driest 28 mm in 1986	68
February	26.7°C22 Feb 2018	-20.0°C4 Feb 1996	121 mm6 Feb 2020	328 mm2003 · driest 21 mm in 1968	67
March	29.4°C31 Mar 1963	-16.1°C3 Mar 1980	151 mm12 Mar 1963	345 mm1973 · driest 46 mm in 2006	67
April	33.3°C27 Apr 1986	-5.6°C1 Apr 1987	132 mm13 Apr 2020	257 mm2017 · driest 14 mm in 2002	67
May	34.4°C19 May 1962	-1.1°C2 May 1963	183 mm6 May 2003	427 mm2003 · driest 33 mm in 1962	66
June	39.4°C30 Jun 2012	4.4°C1 Jun 1966	81 mm20 Jun 1989	286 mm1989 · driest 12 mm in 1988	67
July	41.7°C16 Jul 1980	9.4°C7 Jul 1972	131 mm7 Jul 2013	330 mm2013 · driest 27 mm in 1980	67
August	40.0°C10 Aug 1980	9.4°C31 Aug 1968	112 mm17 Aug 1982	258 mm1982 · driest 7 mm in 1999	66
September	37.8°C1 Sep 1957	-1.1°C30 Sep 1967	192 mm17 Sep 2004	340 mm1977 · driest 1 mm in 2019	66
October	36.1°C3 Oct 2019	-5.0°C26 Oct 1962	107 mm17 Oct 1975	217 mm1975 · driest 0 mm in 1963	67
November	28.9°C2 Nov 2016	-12.8°C24 Nov 1970	95 mm28 Nov 2011	303 mm1957 · driest 20 mm in 2021	67
December	24.4°C4 Dec 1982	-20.6°C25 Dec 1983	151 mm30 Dec 1969	357 mm1990 · driest 4 mm in 1958	68

Typical days per month at DAYTON 2SE, 1991–2020
Month	Days 25°C+	Days 30°C+	Frost nights	Heavy rain (10 mm+)	Snow days
January	0	0	19	5	<1
February	<1	0	14	4	<1
March	2	0	8	4	0
April	10	<1	1	4	0
May	19	4	0	4	0
June	27	14	0	4	0
July	30	21	0	4	0
August	30	20	0	3	0
September	22	9	0	4	0
October	9	<1	1	3	0
November	<1	0	9	4	0
December	0	0	17	5	<1

The best month has moved. On the 1961–1990 numbers the strongest month here was September (scoring 77); on 2011–2025 it is May (80). Both are scored the same way, from the same station — only the climate underneath changed.

How often, not how much — every day in DAYTON 2SE’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%	30%	14%	35%	5.4–11.7°C
February	7%	31%	15%	40%	8.6–14.5°C
March	23%	32%	15%	40%	13.7–19.2°C
April	53%	28%	13%	34%	19.8–24.2°C
May	65%	31%	13%	38%	24.0–28.0°C
June	71%	30%	11%	36%	28.1–31.7°C
July	65%	35%	13%	44%	29.4–32.9°C
August	72%	28%	10%	33%	29.1–32.7°C
September	73%	25%	11%	25%	25.7–29.5°C
October	58%	22%	8%	22%	20.1–23.8°C
November	19%	26%	13%	29%	13.5–18.1°C
December	3%	30%	15%	35%	7.6–12.9°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.

1957Each stripe is one year’s mean temperature against the 63-year average. Warmest: 1957. Coolest: 1996.2025

The evidence behind this page

Nearby, measured,
and named.

Place identity: GeoNames 4617536
NOAA station: USC00402360 · DAYTON 2SE
Station distance: 2.9 km from the place centre
Climate period: 1991–2020
Minimum month coverage: 26 usable years
Daylight: Calculated from latitude 35.49°, 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 DAYTON 2SE is what differs

Sale Creek→Graysville→Allen→Arcadia Shores→Beta→Big Spring→

Or put two places side by side: Dayton vs Sale Creek

Best time to visitDayton.

May

August

October

The whole year,without the guesswork.

Dayton runs -0.1°Con the 1961–1990 baseline.

Nearby, measured,and named.

Best time to visit
Dayton.

The whole year,
without the guesswork.

Dayton runs -0.1°C
on the 1961–1990 baseline.

Nearby, measured,
and named.