United States · 1991–2020

Best time to visit
Hermann.

September leads for comfortable weather in Hermann: typically 26.5°C by day, 11.9°C at night, with 104 mm of rain. Based on measured 1991–2020 NOAA station history.

Best comfortSeptember

Typical high26.5°C

Typical low11.9°C

Rain in September104 mm

Comfort

September

September · May · June

73climate match

Beach

July

July · August · June

70climate match

Outdoors

October

October · April · May

79climate match

The weakest month is January, scoring 5 against September’s 73 — days reach only 4.5°C, 19° below the 24°C the score treats as ideal, and nights drop to -7°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

54.5° / -7°

Feb

57.1° / -5.6°

Mar

2012.6° / -0.7°

Apr

4719.1° / 4.8°

May

7023.7° / 10.7°

Jun

6828.2° / 15.8°

Jul

5830.8° / 18.1°

Aug

6330.4° / 16.8°

Sep

7326.5° / 11.9°

Oct

5920.1° / 5.6°

Nov

2513° / -0.2°

Dec

56.6° / -4.8°

Monthly climate evidence for Hermann — daylight is calculated from latitude, everything else is measured
Month	Day	Night	Rain	Wet days	Daylight	Comfort	Coverage
January	4.5°C	-7°C	69 mm	6.3	9 h 44	5	Strong coverage
February	7.1°C	-5.6°C	61 mm	6.4	10 h 41	5	Strong coverage
March	12.6°C	-0.7°C	94 mm	9.2	11 h 50	20	Strong coverage
April	19.1°C	4.8°C	126 mm	9.6	13 h 09	47	Strong coverage
May	23.7°C	10.7°C	143 mm	10.1	14 h 15	70	Strong coverage
June	28.2°C	15.8°C	116 mm	8.9	14 h 51	68	Strong coverage
July	30.8°C	18.1°C	103 mm	7.5	14 h 37	58	Strong coverage
August	30.4°C	16.8°C	100 mm	6.7	13 h 40	63	Strong coverage
September	26.5°C	11.9°C	104 mm	6.3	12 h 23	73	Strong coverage
October	20.1°C	5.6°C	86 mm	7.1	11 h 07	59	Strong coverage
November	13°C	-0.2°C	87 mm	7.5	10 h 01	25	Strong coverage
December	6.6°C	-4.8°C	69 mm	6.7	9 h 28	5	Strong coverage

Records at ROSEBUD, 1980–2026
Month	Record high	Record low	Wettest day	Wettest / driest month	Years
January	23.3°C22 Jan 1986	-32.2°C7 Jan 2014	90 mm8 Jan 2008	209 mm2005 · driest 0 mm in 1986	43
February	27.8°C28 Feb 2024	-26.7°C11 Feb 1982	74 mm18 Feb 2000	140 mm2018 · driest 7 mm in 1981	44
March	32.8°C27 Mar 2026	-20.0°C12 Mar 1998	64 mm30 Mar 1985	193 mm2008 · driest 29 mm in 2014	44
April	34.4°C28 Apr 1989	-8.3°C7 Apr 1990	121 mm29 Apr 1996	331 mm1994 · driest 23 mm in 1986	44
May	35.6°C27 May 2012	-6.7°C4 May 2005	241 mm7 May 2000	376 mm2000 · driest 24 mm in 2012	44
June	41.1°C29 Jun 2012	4.4°C13 Jun 1985	74 mm25 Jun 1993	291 mm1985 · driest 20 mm in 2016	44
July	40.6°C21 Jul 2006	8.9°C17 Jul 2014	185 mm7 Jul 1993	309 mm1993 · driest 16 mm in 2006	43
August	41.7°C30 Aug 1984	2.2°C29 Aug 1986	167 mm12 Aug 1993	268 mm2023 · driest 11 mm in 1983	42
September	38.3°C6 Sep 1990	-2.8°C26 Sep 1985	116 mm23 Sep 1993	327 mm1993 · driest 16 mm in 1990	42
October	33.9°C1 Oct 2023	-8.3°C24 Oct 1981	93 mm9 Oct 2009	326 mm2009 · driest 6 mm in 2010	43
November	28.9°C9 Nov 2023	-17.2°C13 Nov 1986	104 mm5 Nov 2024	275 mm1985 · driest 11 mm in 2017	43
December	25.0°C9 Dec 1991	-30.6°C23 Dec 1989	138 mm27 Dec 2015	304 mm2015 · driest 5 mm in 1980	45

Typical days per month at ROSEBUD, 1991–2020
Month	Days 25°C+	Days 30°C+	Frost nights	Heavy rain (10 mm+)	Snow days
January	0	0	26	2	3
February	<1	0	24	2	3
March	2	0	18	3	1
April	6	<1	7	4	0
May	14	3	<1	4	0
June	24	11	0	4	0
July	29	19	0	4	0
August	29	18	0	3	0
September	20	8	<1	3	0
October	8	1	5	3	0
November	<1	0	17	3	<1
December	0	0	25	2	2

How often, not how much — every day in ROSEBUD’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%	19%	7%	16%	1.9–7.9°C
February	7%	22%	6%	21%	3.0–11.4°C
March	16%	29%	11%	35%	9.4–17.1°C
April	36%	32%	13%	42%	17.0–22.6°C
May	56%	32%	13%	41%	22.0–26.0°C
June	70%	29%	12%	34%	26.6–30.7°C
July	75%	25%	11%	23%	29.1–32.8°C
August	78%	22%	10%	21%	28.5–32.5°C
September	74%	20%	9%	18%	24.8–28.8°C
October	47%	24%	10%	26%	17.9–22.7°C
November	15%	25%	10%	26%	9.6–16.2°C
December	2%	22%	7%	21%	2.6–10.5°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.

1984Each stripe is one year’s mean temperature against the 34-year average. Warmest: 2024. Coolest: 2014.2025

The evidence behind this page

Nearby, measured,
and named.

Place identity: GeoNames 4390221
NOAA station: USC00237300 · ROSEBUD
Station distance: 28.7 km from the place centre
Climate period: 1991–2020
Minimum month coverage: 26 usable years
Daylight: Calculated from latitude 38.70°, 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 ROSEBUD is what differs

Owensville→New Haven→Gerald→Rosebud→Leslie→Rhineland→

Or put two places side by side: Hermann vs Owensville

Best time to visitHermann.