United States · 1991–2020

Best time to visit
Uniondale.

September leads for comfortable weather in Uniondale: typically 24.7°C by day, 12.2°C at night, with 75 mm of rain. Based on measured 1991–2020 NOAA station history.

Best comfortSeptember

Typical high24.7°C

Typical low12.2°C

Rain in September75 mm

Comfort

September

September · August · June

84climate match

Beach

July

July · August · June

69climate match

Outdoors

October

October · September · May

74climate match

The weakest month is January, scoring 5 against September’s 84 — days reach only 0.3°C, 24° 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

50.3° / -8.3°

Feb

52.5° / -6.9°

Mar

98.5° / -2.2°

Apr

3915.9° / 4°

May

6622.1° / 10.4°

Jun

7126.9° / 15.9°

Jul

6428.5° / 17.6°

Aug

7327.5° / 16.4°

Sep

8424.7° / 12.2°

Oct

5417.8° / 6°

Nov

169.9° / 0.4°

Dec

53.2° / -4.8°

Monthly climate evidence for Uniondale — daylight is calculated from latitude, everything else is measured
Month	Day	Night	Rain	Wet days	Daylight	Comfort	Coverage
January	0.3°C	-8.3°C	63 mm	8.1	9 h 32	5	Strong coverage
February	2.5°C	-6.9°C	51 mm	7	10 h 34	5	Strong coverage
March	8.5°C	-2.2°C	65 mm	8.5	11 h 49	9	Strong coverage
April	15.9°C	4°C	97 mm	9.9	13 h 14	39	Strong coverage
May	22.1°C	10.4°C	121 mm	10.9	14 h 26	66	Strong coverage
June	26.9°C	15.9°C	120 mm	10	15 h 05	71	Strong coverage
July	28.5°C	17.6°C	122 mm	7.8	14 h 50	64	Strong coverage
August	27.5°C	16.4°C	98 mm	7.5	13 h 48	73	Strong coverage
September	24.7°C	12.2°C	75 mm	6.5	12 h 25	84	Strong coverage
October	17.8°C	6°C	71 mm	8.2	11 h 02	54	Strong coverage
November	9.9°C	0.4°C	80 mm	8.8	9 h 51	16	Strong coverage
December	3.2°C	-4.8°C	61 mm	8	9 h 15	5	Strong coverage

What has changed

Uniondale 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

+1.2

Feb

+1.6

Mar

+0.2

Apr

+0.3

May

+1.0

Jun

0.0

Jul

-0.5

Aug

-0.5

Sep

+0.6

Oct

+1.1

Nov

+0.1

Dec

+1.9

September daytime highs, 2011–2020. Last recorded: 23.8°C.

Records at BLUFFTON 6N, 1971–2021
Month	Record high	Record low	Wettest day	Wettest / driest month	Years
January	19.4°C8 Jan 2008	-31.1°C20 Jan 1985	53 mm13 Jan 2013	181 mm2005 · driest 16 mm in 2010	48
February	23.3°C26 Feb 2000	-27.8°C10 Feb 1975	45 mm27 Feb 1997	169 mm1990 · driest 8 mm in 1978	47
March	30.0°C22 Mar 2012	-21.7°C2 Mar 1980	43 mm9 Mar 2009	130 mm2009 · driest 17 mm in 1994	48
April	30.6°C27 Apr 1986	-13.3°C7 Apr 1982	70 mm6 Apr 2009	180 mm2009 · driest 25 mm in 1999	47
May	35.0°C29 May 2018	-5.6°C7 May 1989	96 mm26 May 1989	242 mm2011 · driest 13 mm in 1988	47
June	37.8°C22 Jun 2012	2.8°C11 Jun 1972	115 mm14 Jun 1981	362 mm2015 · driest 13 mm in 1991	51
July	40.0°C16 Jul 1980	5.0°C1 Jul 1988	136 mm22 Jul 1998	281 mm2003 · driest 6 mm in 1975	51
August	37.2°C20 Aug 1983	4.4°C29 Aug 1986	102 mm18 Aug 1990	223 mm1975 · driest 17 mm in 1972	50
September	36.1°C11 Sep 1983	-2.8°C24 Sep 1989	68 mm10 Sep 1992	219 mm1971 · driest 7 mm in 1979	49
October	32.2°C9 Oct 2007	-12.2°C31 Oct 1988	74 mm26 Oct 1991	178 mm2001 · driest 22 mm in 1982	49
November	26.1°C3 Nov 2016	-15.0°C30 Nov 1976	46 mm24 Nov 2014	179 mm1985 · driest 11 mm in 1976	48
December	21.1°C3 Dec 1982	-27.8°C25 Dec 1983	67 mm30 Dec 1990	188 mm1990 · driest 15 mm in 2010	47

Typical days per month at BLUFFTON 6N, 1991–2020
Month	Days 25°C+	Days 30°C+	Frost nights	Heavy rain (10 mm+)	Snow days
January	0	0	27	2	5
February	0	0	24	2	4
March	<1	0	21	2	2
April	3	<1	7	3	<1
May	11	3	<1	4	0
June	21	8	0	4	0
July	27	11	0	3	0
August	25	8	0	3	0
September	16	4	<1	2	0
October	4	<1	3	2	0
November	<1	0	16	3	<1
December	0	0	25	2	3

How often, not how much — every day in BLUFFTON 6N’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%	26%	5%	27%	-3.4–3.3°C
February	<1%	26%	6%	30%	-3.5–5.8°C
March	5%	29%	8%	36%	4.9–11.8°C
April	18%	33%	10%	42%	12.9–18.2°C
May	43%	34%	12%	45%	19.1–25.3°C
June	64%	31%	12%	38%	24.6–28.9°C
July	75%	26%	10%	24%	26.7–30.7°C
August	74%	25%	10%	26%	25.9–29.1°C
September	65%	23%	8%	23%	22.6–26.9°C
October	26%	27%	8%	30%	14.7–19.6°C
November	6%	29%	9%	34%	6.0–12.6°C
December	<1%	30%	7%	35%	-0.1–6.5°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.

1972Each stripe is one year’s mean temperature against the 42-year average. Warmest: 1998. Coolest: 1988.2018

The evidence behind this page

Nearby, measured,
and named.

Place identity: GeoNames 4927487
NOAA station: USC00120830 · BLUFFTON 6N
Station distance: 7.5 km from the place centre
Climate period: 1991–2020
Minimum month coverage: 28 usable years
Daylight: Calculated from latitude 40.83°, 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 BLUFFTON 6N is what differs

Bluffton→Ossian→Poneto→Buckeye→Craigville→Curryville→

Or put two places side by side: Uniondale vs Bluffton

Best time to visitUniondale.