United States · 1991–2020

Best time to visit
Blackwater.

September leads for comfortable weather in Blackwater: typically 27°C by day, 13.8°C at night, with 93 mm of rain. Based on measured 1991–2020 NOAA station history.

Best comfortSeptember

Typical high27°C

Typical low13.8°C

Rain in September93 mm

Comfort

September

September · May · October

77climate match

Beach

July

July · June · August

73climate match

Outdoors

October

October · April · September

83climate match

The weakest month is January, scoring 5 against September’s 77 — days reach only 3.4°C, 21° 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

53.4° / -6.3°

Feb

77.2° / -3.7°

Mar

3012.9° / 0.8°

Apr

5519.4° / 6.8°

May

7524.7° / 12.8°

Jun

6129.4° / 18°

Jul

5132.1° / 20.5°

Aug

5331.7° / 19.4°

Sep

7727° / 13.8°

Oct

6820.7° / 7.7°

Nov

2712.2° / 1.5°

Dec

56.2° / -3.5°

Monthly climate evidence for Blackwater — daylight is calculated from latitude, everything else is measured
Month	Day	Night	Rain	Wet days	Daylight	Comfort	Coverage
January	3.4°C	-6.3°C	53 mm	5.6	9 h 43	5	Good coverage
February	7.2°C	-3.7°C	55 mm	4.5	10 h 40	7	Good coverage
March	12.9°C	0.8°C	64 mm	7.3	11 h 50	30	Good coverage
April	19.4°C	6.8°C	104 mm	8.9	13 h 10	55	Good coverage
May	24.7°C	12.8°C	127 mm	9.4	14 h 17	75	Good coverage
June	29.4°C	18°C	118 mm	7.4	14 h 53	61	Good coverage
July	32.1°C	20.5°C	100 mm	7.2	14 h 39	51	Good coverage
August	31.7°C	19.4°C	111 mm	6.2	13 h 41	53	Good coverage
September	27°C	13.8°C	93 mm	6.4	12 h 24	77	Good coverage
October	20.7°C	7.7°C	73 mm	6.5	11 h 06	68	Good coverage
November	12.2°C	1.5°C	79 mm	6.5	9 h 59	27	Good coverage
December	6.2°C	-3.5°C	43 mm	5.4	9 h 27	5	Good coverage

Records at BOONVILLE, 1937–2008
Month	Record high	Record low	Wettest day	Wettest / driest month	Years
January	25.0°C25 Jan 1950	-27.8°C11 Jan 1982	65 mm1 Jan 1985	132 mm2005 · driest 0 mm in 1986	69
February	25.6°C27 Feb 1996	-24.4°C11 Feb 1981	88 mm21 Feb 1997	169 mm1985 · driest 2 mm in 1947	69
March	30.0°C30 Mar 1986	-22.8°C5 Mar 1960	63 mm15 Mar 1944	216 mm1973 · driest 11 mm in 1941	70
April	33.3°C14 Apr 2006	-7.2°C7 Apr 2007	104 mm2 Apr 1983	364 mm1984 · driest 11 mm in 1948	71
May	35.0°C20 May 1998	0.6°C4 May 1954	124 mm16 May 1990	380 mm1995 · driest 18 mm in 1998	71
June	39.4°C25 Jun 1988	6.1°C5 Jun 1993	152 mm7 Jun 1993	372 mm1981 · driest 19 mm in 1991	71
July	43.3°C15 Jul 1954	10.0°C7 Jul 1972	178 mm5 Jul 1942	344 mm1958 · driest 12 mm in 1970	71
August	42.2°C22 Aug 2003	7.2°C28 Aug 1986	140 mm27 Aug 1982	300 mm1982 · driest 16 mm in 1976	71
September	40.0°C1 Sep 2000	-2.2°C28 Sep 1942	122 mm1 Sep 2003	336 mm1986 · driest 7 mm in 1956	70
October	36.1°C4 Oct 2006	-5.6°C26 Oct 1942	115 mm3 Oct 1986	263 mm1984 · driest 1 mm in 1964	71
November	30.6°C1 Nov 1950	-17.8°C8 Nov 1991	108 mm19 Nov 1985	429 mm1983 · driest 2 mm in 1989	69
December	23.3°C6 Dec 1998	-30.0°C23 Dec 1989	99 mm2 Dec 1982	274 mm1982 · driest 5 mm in 1955	69

Typical days per month at BOONVILLE, 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	21	2	1
March	2	0	14	2	<1
April	7	1	3	4	0
May	16	5	0	4	0
June	26	15	0	3	0
July	30	22	0	3	0
August	29	20	0	3	0
September	20	9	0	3	0
October	9	2	2	3	0
November	1	0	12	3	<1
December	0	0	23	1	2

How often, not how much — every day in BOONVILLE’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%	17%	5%	13%	-0.3–6.2°C
February	3%	19%	5%	18%	2.2–9.9°C
March	14%	25%	9%	26%	8.1–14.9°C
April	34%	30%	11%	36%	15.8–21.0°C
May	56%	32%	14%	42%	21.3–26.3°C
June	71%	28%	12%	32%	26.6–30.6°C
July	77%	23%	10%	22%	29.5–33.8°C
August	77%	23%	11%	24%	28.1–33.7°C
September	70%	23%	10%	22%	23.7–29.3°C
October	46%	22%	9%	23%	17.9–23.7°C
November	13%	20%	7%	18%	8.4–14.7°C
December	2%	19%	5%	17%	1.6–8.2°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.

1938Each stripe is one year’s mean temperature against the 65-year average. Warmest: 1938. Coolest: 1985.2007

The evidence behind this page

Nearby, measured,
and named.

Place identity: GeoNames 4377400
NOAA station: USC00230817 · BOONVILLE
Station distance: 19.9 km from the place centre
Climate period: 1991–2020
Minimum month coverage: 16 usable years
Daylight: Calculated from latitude 38.98°, 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 BOONVILLE is what differs

Boonville→Pilot Grove→Bunceton→Windsor Place→Rocheport→Bellair→

Or put two places side by side: Blackwater vs Boonville

Best time to visitBlackwater.