United States · 1991–2020

Best time to visit
Flat Rock.

September leads for comfortable weather in Flat Rock: typically 28.7°C by day, 14.7°C at night, with 95 mm of rain. Based on measured 1991–2020 NOAA station history.

Best comfortSeptember

Typical high28.7°C

Typical low14.7°C

Rain in September95 mm

Comfort

September

September · October · May

73climate match

Beach

August

August · September · June

69climate match

Outdoors

October

October · April · November

75climate match

The weakest month is January, scoring 5 against September’s 73 — days reach only 8.6°C, 15° below the 24°C the score treats as ideal, and nights drop to -2.7°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

58.6° / -2.7°

Feb

911° / -1.6°

Mar

3215.9° / 2.4°

Apr

6021.5° / 7.3°

May

7026.2° / 12.9°

Jun

5730.4° / 17.7°

Jul

4532.3° / 19.9°

Aug

5432.1° / 18.8°

Sep

7328.7° / 14.7°

Oct

7222.7° / 7.6°

Nov

3615.6° / 1.9°

Dec

610.2° / -1.2°

Monthly climate evidence for Flat Rock — daylight is calculated from latitude, everything else is measured
Month	Day	Night	Rain	Wet days	Daylight	Comfort	Coverage
January	8.6°C	-2.7°C	116 mm	9.2	9 h 57	5	Strong coverage
February	11°C	-1.6°C	126 mm	8.6	10 h 49	9	Strong coverage
March	15.9°C	2.4°C	127 mm	9.7	11 h 51	32	Strong coverage
April	21.5°C	7.3°C	126 mm	8.6	13 h 04	60	Strong coverage
May	26.2°C	12.9°C	132 mm	9.4	14 h 04	70	Strong coverage
June	30.4°C	17.7°C	118 mm	9	14 h 36	57	Strong coverage
July	32.3°C	19.9°C	127 mm	8.9	14 h 23	45	Strong coverage
August	32.1°C	18.8°C	99 mm	6.9	13 h 32	54	Strong coverage
September	28.7°C	14.7°C	95 mm	6.1	12 h 22	73	Strong coverage
October	22.7°C	7.6°C	85 mm	6.5	11 h 12	72	Strong coverage
November	15.6°C	1.9°C	96 mm	7.3	10 h 12	36	Strong coverage
December	10.2°C	-1.2°C	129 mm	9.8	9 h 43	6	Strong coverage

What has changed

Flat Rock runs +0.6°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

+1.0

Feb

+1.5

Mar

+0.6

Apr

+0.3

May

+0.5

Jun

+0.6

Jul

+0.4

Aug

+0.1

Sep

+0.7

Oct

+0.6

Nov

-0.5

Dec

+1.0

September daytime highs, 2011–2025. Last recorded: 30.6°C.

Records at LEBANON, 1902–2026
Month	Record high	Record low	Wettest day	Wettest / driest month	Years
January	25.0°C22 Jan 1933	-28.9°C24 Jan 1963	102 mm1 Jan 1919	242 mm1932 · driest 6 mm in 1903	84
February	27.8°C13 Feb 1962	-22.8°C10 Feb 1979	133 mm14 Feb 1989	363 mm2019 · driest 16 mm in 1968	87
March	31.7°C27 Mar 1904	-18.9°C3 Mar 1980	137 mm28 Mar 2021	366 mm1975 · driest 18 mm in 1910	86
April	33.3°C24 Apr 1925	-7.2°C1 Apr 1923	93 mm22 Apr 1984	290 mm1912 · driest 20 mm in 1915	85
May	35.6°C18 May 1962	-1.7°C16 May 1997	138 mm9 May 2024	321 mm1983 · driest 11 mm in 1932	86
June	42.2°C30 Jun 2012	3.3°C1 Jun 1966	113 mm13 Jun 1987	273 mm1998 · driest 1 mm in 1988	85
July	43.3°C28 Jul 1930	8.3°C15 Jul 1926	96 mm3 Jul 1991	277 mm2012 · driest 19 mm in 1986	84
August	43.9°C9 Aug 1930	6.1°C29 Aug 1986	155 mm31 Aug 1926	318 mm1926 · driest 8 mm in 2007	86
September	42.8°C7 Sep 1925	0.6°C24 Sep 1983	165 mm14 Sep 1979	309 mm1979 · driest 3 mm in 1998	84
October	36.7°C13 Oct 1931	-6.7°C29 Oct 1902	102 mm17 Oct 1975	252 mm2014 · driest 0 mm in 1963	85
November	29.4°C2 Nov 1961	-15.6°C30 Nov 1929	125 mm27 Nov 1973	275 mm1919 · driest 22 mm in 2009	86
December	26.1°C5 Dec 1998	-23.9°C22 Dec 1989	97 mm9 Dec 1978	371 mm1926 · driest 27 mm in 1985	86

Typical days per month at LEBANON, 1991–2020
Month	Days 25°C+	Days 30°C+	Frost nights	Heavy rain (10 mm+)
January	0	0	21	4
February	<1	0	18	4
March	3	0	12	4
April	9	1	3	4
May	20	8	<1	4
June	27	18	0	4
July	30	25	0	4
August	30	24	0	3
September	24	13	0	3
October	12	2	3	3
November	1	0	13	3
December	<1	0	19	4

The best month has moved. On the 1961–1990 numbers the strongest month here was May (scoring 76); on 2011–2025 it is October (79). Both are scored the same way, from the same station — only the climate underneath changed.

How often, not how much — every day in LEBANON’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	3%	30%	13%	35%	5.5–12.1°C
February	8%	30%	14%	35%	7.2–14.9°C
March	23%	31%	14%	37%	12.7–19.4°C
April	47%	30%	13%	37%	19.4–23.9°C
May	65%	29%	13%	35%	24.1–28.4°C
June	73%	27%	13%	30%	28.8–32.3°C
July	73%	28%	13%	32%	30.7–34.0°C
August	77%	24%	11%	24%	30.3–33.9°C
September	76%	21%	9%	20%	26.6–31.6°C
October	60%	20%	9%	18%	20.4–25.2°C
November	22%	25%	12%	27%	13.0–18.3°C
December	4%	29%	14%	37%	7.0–13.1°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.

1911Each stripe is one year’s mean temperature against the 72-year average. Warmest: 1921. Coolest: 1976.2025

The evidence behind this page

Nearby, measured,
and named.

Place identity: GeoNames 4622670
NOAA station: USC00405108 · LEBANON
Station distance: 7.4 km from the place centre
Climate period: 1991–2020
Minimum month coverage: 28 usable years
Daylight: Calculated from latitude 36.16°, 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 LEBANON is what differs

Lebanon→Egan→Cairo Bend→Ebaneezer (historical)→Forktown→Holloway→

Or put two places side by side: Flat Rock vs Lebanon

Best time to visitFlat Rock.

September

August

October

The whole year,without the guesswork.

Flat Rock runs +0.6°Con the 1961–1990 baseline.

Nearby, measured,and named.

Best time to visit
Flat Rock.

The whole year,
without the guesswork.

Flat Rock runs +0.6°C
on the 1961–1990 baseline.

Nearby, measured,
and named.