United States · 1991–2020

Best time to visit
Dayton.

September leads for comfortable weather in Dayton: typically 25.3°C by day, 12.1°C at night, with 94 mm of rain. Based on measured 1991–2020 NOAA station history.

Best comfortSeptember

Typical high25.3°C

Typical low12.1°C

Rain in September94 mm

Comfort

September

September · May · June

79climate match

Beach

August

August · July · June

68climate match

Outdoors

October

October · April · May

82climate match

The weakest month is January, scoring 5 against September’s 79 — days reach only 5.8°C, 18° below the 24°C the score treats as ideal, and nights drop to -5.4°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

55.8° / -5.4°

Feb

57.7° / -4.5°

Mar

2012° / -1.1°

Apr

5018.5° / 4°

May

7123.1° / 9.5°

Jun

7127.7° / 14.7°

Jul

6129.8° / 16.8°

Aug

6829° / 15.7°

Sep

7925.3° / 12.1°

Oct

6119.2° / 5.6°

Nov

2913° / 0°

Dec

57.6° / -3.6°

Monthly climate evidence for Dayton — daylight is calculated from latitude, everything else is measured
Month	Day	Night	Rain	Wet days	Daylight	Comfort	Coverage
January	5.8°C	-5.4°C	67 mm	7.1	9 h 45	5	Strong coverage
February	7.7°C	-4.5°C	56 mm	6.4	10 h 42	5	Strong coverage
March	12°C	-1.1°C	78 mm	8.9	11 h 50	20	Strong coverage
April	18.5°C	4°C	83 mm	9.2	13 h 09	50	Strong coverage
May	23.1°C	9.5°C	101 mm	10.8	14 h 14	71	Strong coverage
June	27.7°C	14.7°C	107 mm	9.5	14 h 50	71	Strong coverage
July	29.8°C	16.8°C	110 mm	9.5	14 h 36	61	Strong coverage
August	29°C	15.7°C	98 mm	9.3	13 h 39	68	Strong coverage
September	25.3°C	12.1°C	94 mm	6.7	12 h 23	79	Strong coverage
October	19.2°C	5.6°C	63 mm	6.1	11 h 08	61	Strong coverage
November	13°C	0°C	66 mm	6.7	10 h 02	29	Strong coverage
December	7.6°C	-3.6°C	74 mm	7.2	9 h 30	5	Strong coverage

What has changed

Dayton runs +0.3°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

+0.6

Feb

+1.7

Mar

-0.2

Apr

+0.1

May

-0.5

Jun

-0.4

Jul

+0.2

Aug

-0.6

Sep

0.0

Oct

+0.4

Nov

+0.1

Dec

+1.8

September daytime highs, 2011–2025. Last recorded: 26.2°C.

Records at DALE ENTERPRISE, 1893–2026
Month	Record high	Record low	Wettest day	Wettest / driest month	Years
January	25.6°C31 Jan 2002	-31.7°C14 Jan 1912	59 mm31 Jan 2013	189 mm1998 · driest 7 mm in 1955	132
February	26.1°C11 Feb 1932	-30.0°C11 Feb 1899	49 mm14 Feb 1984	149 mm2003 · driest 2 mm in 1941	134
March	32.8°C22 Mar 1907	-21.1°C4 Mar 2014	79 mm17 Mar 1936	154 mm1936 · driest 11 mm in 1981	132
April	36.1°C25 Apr 1925	-12.2°C1 Apr 1923	58 mm21 Apr 1992	179 mm2011 · driest 14 mm in 1967	133
May	36.1°C28 May 1914	-4.4°C3 May 1911	86 mm8 May 1960	220 mm1924 · driest 11 mm in 1911	134
June	38.9°C10 Jun 1914	0.0°C9 Jun 1912	117 mm16 Jun 1910	365 mm1901 · driest 13 mm in 1980	133
July	40.6°C21 Jul 1926	5.0°C3 Jul 1929	136 mm12 Jul 2013	332 mm1969 · driest 2 mm in 1930	134
August	40.0°C6 Aug 1918	3.9°C29 Aug 1965	117 mm9 Aug 2024	242 mm1898 · driest 6 mm in 1957	133
September	38.3°C1 Sep 1932	-3.3°C24 Sep 1974	151 mm7 Sep 1996	311 mm1996 · driest 1 mm in 1985	132
October	34.4°C7 Oct 1941	-9.4°C27 Oct 1962	119 mm15 Oct 1954	213 mm1976 · driest 1 mm in 1963	132
November	28.9°C5 Nov 1935	-16.7°C30 Nov 1929	102 mm27 Nov 2014	219 mm1985 · driest 0 mm in 1933	132
December	25.6°C6 Dec 2001	-26.7°C15 Dec 1914	77 mm1 Dec 1934	180 mm2013 · driest 0 mm in 1896	132

Typical days per month at DALE ENTERPRISE, 1991–2020
Month	Days 25°C+	Days 30°C+	Frost nights	Heavy rain (10 mm+)	Snow days
January	0	0	26	2	3
February	0	0	23	2	3
March	<1	0	19	3	2
April	5	<1	7	3	<1
May	12	3	<1	3	0
June	24	10	0	3	0
July	29	16	0	4	0
August	28	13	0	3	0
September	17	6	0	3	0
October	5	<1	5	2	<1
November	<1	0	17	2	<1
December	0	0	24	3	2

How often, not how much — every day in DALE ENTERPRISE’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%	7%	23%	2.8–9.7°C
February	2%	23%	7%	23%	4.2–11.1°C
March	13%	27%	8%	31%	9.3–16.1°C
April	34%	28%	8%	32%	16.2–21.1°C
May	55%	34%	10%	43%	21.5–26.2°C
June	67%	32%	11%	40%	26.1–29.9°C
July	67%	33%	12%	42%	28.1–31.8°C
August	70%	30%	10%	35%	27.1–31.0°C
September	72%	22%	9%	22%	23.4–28.5°C
October	45%	19%	7%	17%	17.4–22.2°C
November	12%	21%	7%	17%	10.4–15.8°C
December	2%	21%	7%	19%	4.5–10.4°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.

1893Each stripe is one year’s mean temperature against the 126-year average. Warmest: 1990. Coolest: 1895.2025

The evidence behind this page

Nearby, measured,
and named.

Place identity: GeoNames 4755491
NOAA station: USC00442208 · DALE ENTERPRISE
Station distance: 4.4 km from the place centre
Climate period: 1991–2020
Minimum month coverage: 29 usable years
Daylight: Calculated from latitude 38.41°, 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 DALE ENTERPRISE is what differs

Harrisonburg→Bridgewater→Massanetta Springs→Broadway→Weyers Cave→Massanutten→

Or put two places side by side: Dayton vs Harrisonburg

Best time to visitDayton.