United States · 1991–2020

Best time to visit
Vienna.

August leads for comfortable weather in Vienna: typically 26.8°C by day, 14.5°C at night, with 68 mm of rain. Based on measured 1991–2020 NOAA station history.

Best comfortAugust

Typical high26.8°C

Typical low14.5°C

Rain in August68 mm

Comfort

August

August · June · July

82climate match

Beach

August

August · July · June

66climate match

Outdoors

September

September · May · August

82climate match

The weakest month is January, scoring 5 against August’s 82 — days reach only -6.1°C, 30° 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

5-6.1° / -16.2°

Feb

5-2.9° / -13.4°

Mar

53.7° / -7.2°

Apr

2912.3° / 0.2°

May

5819° / 6.9°

Jun

7924.3° / 12.9°

Jul

7427.5° / 15.8°

Aug

8226.8° / 14.5°

Sep

7321.6° / 9.1°

Oct

3713.8° / 1.8°

Nov

54.2° / -5.9°

Dec

5-3° / -12.5°

Monthly climate evidence for Vienna — daylight is calculated from latitude, everything else is measured
Month	Day	Night	Rain	Wet days	Daylight	Comfort	Coverage
January	-6.1°C	-16.2°C	16 mm	4.1	9 h 09	5	Good coverage
February	-2.9°C	-13.4°C	17 mm	3.8	10 h 21	5	Good coverage
March	3.7°C	-7.2°C	27 mm	4.7	11 h 46	5	Good coverage
April	12.3°C	0.2°C	55 mm	6	13 h 24	29	Good coverage
May	19°C	6.9°C	83 mm	8.1	14 h 47	58	Good coverage
June	24.3°C	12.9°C	109 mm	10	15 h 33	79	Good coverage
July	27.5°C	15.8°C	95 mm	7.7	15 h 15	74	Good coverage
August	26.8°C	14.5°C	68 mm	6.2	14 h 03	82	Good coverage
September	21.6°C	9.1°C	73 mm	6.8	12 h 28	73	Good coverage
October	13.8°C	1.8°C	57 mm	5.7	10 h 53	37	Good coverage
November	4.2°C	-5.9°C	23 mm	3.8	9 h 30	5	Good coverage
December	-3°C	-12.5°C	16 mm	3.8	8 h 49	5	Good coverage

Records at CLARK, 1893–2012
Month	Record high	Record low	Wettest day	Wettest / driest month	Years
January	18.9°C24 Jan 1981	-41.1°C12 Jan 1912	28 mm21 Jan 1917	56 mm1916 · driest 0 mm in 1990	112
February	19.4°C23 Feb 1958	-40.0°C2 Feb 1905	28 mm29 Feb 2012	51 mm1969 · driest 0 mm in 1894	112
March	29.4°C30 Mar 1943	-32.8°C2 Mar 1913	52 mm31 Mar 2006	87 mm1977 · driest 1 mm in 1925	112
April	35.0°C21 Apr 1980	-22.2°C3 Apr 1975	71 mm13 Apr 1912	198 mm1896 · driest 3 mm in 1934	113
May	41.7°C30 May 1934	-8.9°C3 May 1907	114 mm5 May 2007	235 mm1972 · driest 12 mm in 1948	111
June	42.2°C26 Jun 1933	-2.2°C2 Jun 1951	95 mm15 Jun 1977	251 mm1993 · driest 22 mm in 1987	111
July	43.3°C24 Jul 1940	3.3°C14 Jul 1930	112 mm25 Jul 1997	215 mm1900 · driest 2 mm in 1976	114
August	42.2°C15 Aug 1937	0.0°C28 Aug 1935	102 mm4 Aug 1900	263 mm1900 · driest 11 mm in 1970	115
September	40.0°C10 Sep 1931	-9.4°C25 Sep 1926	119 mm8 Sep 1900	214 mm1901 · driest 1 mm in 1998	113
October	35.6°C3 Oct 1914	-22.2°C29 Oct 1925	97 mm6 Oct 1946	168 mm1998 · driest 0 mm in 1952	113
November	25.6°C9 Nov 1999	-30.0°C30 Nov 1964	33 mm8 Nov 1977	131 mm1922 · driest 0 mm in 1951	110
December	17.2°C17 Dec 1939	-37.2°C31 Dec 1967	38 mm11 Dec 1949	45 mm1909 · driest 0 mm in 1894	112

Typical days per month at CLARK, 1991–2020
Month	Days 25°C+	Days 30°C+	Frost nights	Heavy rain (10 mm+)	Snow days
January	0	0	31	<1	5
February	0	0	27	<1	4
March	<1	0	27	<1	3
April	1	<1	15	2	1
May	6	<1	2	3	0
June	15	3	0	4	0
July	24	9	0	3	0
August	23	7	0	2	0
September	9	2	<1	2	0
October	2	<1	11	2	<1
November	0	0	26	<1	2
December	0	0	31	<1	4

How often, not how much — every day in CLARK’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	0%	13%	<1%	8%	-10.5–-0.4°C
February	0%	13%	1%	8%	-8.0–2.0°C
March	3%	16%	3%	12%	-0.5–9.4°C
April	19%	21%	6%	23%	10.1–17.5°C
May	44%	25%	9%	29%	17.4–23.6°C
June	62%	31%	11%	37%	22.6–27.9°C
July	76%	23%	8%	20%	26.3–32.0°C
August	77%	21%	7%	19%	25.4–30.9°C
September	58%	19%	6%	18%	19.9–25.8°C
October	27%	15%	4%	12%	12.6–18.7°C
November	2%	13%	2%	10%	1.0–8.8°C
December	0%	12%	<1%	7%	-7.1–1.8°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.

1900Each stripe is one year’s mean temperature against the 99-year average. Warmest: 1931. Coolest: 1996.2011

The evidence behind this page

Nearby, measured,
and named.

Place identity: GeoNames 5232615
NOAA station: USC00391739 · CLARK
Station distance: 27 km from the place centre
Climate period: 1991–2020
Minimum month coverage: 20 usable years
Daylight: Calculated from latitude 44.70°, 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 CLARK is what differs

Clark→Henry→Bradley→Garden City→Raymond→Naples→

Or put two places side by side: Vienna vs Clark

Best time to visitVienna.

August

August

September

The whole year,without the guesswork.

Nearby, measured,and named.

Best time to visit
Vienna.

The whole year,
without the guesswork.

Nearby, measured,
and named.