United States · 1991–2020

Best time to visit
Plainview.

September leads for comfortable weather in Plainview: typically 24.1°C by day, 15.7°C at night, with 95 mm of rain. Based on measured 1991–2020 NOAA station history.

Best comfortSeptember

Typical high24.1°C

Typical low15.7°C

Rain in September95 mm

Comfort

September

September · June · May

87climate match

Beach

July

July · August · June

84climate match

Outdoors

May

May · October · September

83climate match

The weakest month is January, scoring 5 against September’s 87 — days reach only 3.8°C, 20° 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

53.8° / -3.9°

Feb

55.3° / -3°

Mar

139.2° / 0.5°

Apr

4014.9° / 5.6°

May

6820.1° / 11.1°

Jun

7925.2° / 16.5°

Jul

6628.4° / 20.1°

Aug

6827.7° / 19.6°

Sep

8724.1° / 15.7°

Oct

5918° / 9.5°

Nov

3212.3° / 3.9°

Dec

56.9° / -0.6°

Monthly climate evidence for Plainview — daylight is calculated from latitude, everything else is measured, sea temperature from the nearest open water 19 km away
Month	Day	Night	Rain	Wet days	Sea	Daylight	Comfort	Coverage
January	3.8°C	-3.9°C	58 mm	6.7	5.9°C	9 h 33	5	Good coverage
February	5.3°C	-3°C	58 mm	6.5	4.2°C	10 h 35	5	Good coverage
March	9.2°C	0.5°C	87 mm	8	4.6°C	11 h 49	13	Good coverage
April	14.9°C	5.6°C	95 mm	8	7.6°C	13 h 14	40	Good coverage
May	20.1°C	11.1°C	79 mm	9.2	12.3°C	14 h 26	68	Good coverage
June	25.2°C	16.5°C	100 mm	8.6	17.9°C	15 h 05	79	Good coverage
July	28.4°C	20.1°C	78 mm	7.3	22.1°C	14 h 49	66	Good coverage
August	27.7°C	19.6°C	93 mm	6.9	22.8°C	13 h 48	68	Good coverage
September	24.1°C	15.7°C	95 mm	6.5	21.1°C	12 h 25	87	Good coverage
October	18°C	9.5°C	90 mm	7.1	17.3°C	11 h 03	59	Good coverage
November	12.3°C	3.9°C	75 mm	7.1	12.8°C	9 h 51	32	Good coverage
December	6.9°C	-0.6°C	94 mm	8.6	9.1°C	9 h 16	5	Good coverage

Records at FARMINGDALE REPUBLIC AP, 1999–2026
Month	Record high	Record low	Wettest day	Wettest / driest month	Years
January	21.7°C6 Jan 2007	-18.2°C4 Jan 2014	44 mm9 Jan 2024	117 mm2006 · driest 6 mm in 2025	27
February	21.1°C16 Feb 2023	-16.6°C20 Feb 2015	50 mm13 Feb 2008	129 mm2008 · driest 1 mm in 2023	27
March	27.8°C29 Mar 2025	-12.8°C7 Mar 2003	61 mm30 Mar 2001	217 mm2024 · driest 5 mm in 2022	27
April	32.8°C17 Apr 2002	-4.3°C6 Apr 2016	125 mm21 Apr 2000	185 mm2000 · driest 0 mm in 2022	27
May	33.9°C31 May 2022	1.1°C1 May 2008	51 mm26 May 2003	111 mm2019 · driest 22 mm in 2015	27
June	37.8°C24 Jun 2025	7.8°C1 Jun 2001	96 mm7 Jun 2013	256 mm2003 · driest 19 mm in 2026	27
July	38.9°C3 Jul 2026	11.7°C3 Jul 2001	77 mm18 Jul 2007	170 mm2026 · driest 13 mm in 2022	27
August	37.8°C9 Aug 2001	11.7°C21 Aug 2007	156 mm14 Aug 2011	289 mm2011 · driest 16 mm in 2022	27
September	34.4°C9 Sep 2016	5.0°C29 Sep 2000	82 mm29 Sep 2023	210 mm1999 · driest 9 mm in 2024	27
October	32.2°C2 Oct 2019	-0.5°C26 Oct 2013	109 mm14 Oct 2005	398 mm2005 · driest 2 mm in 2024	27
November	27.2°C1 Nov 2024	-9.9°C23 Nov 2018	55 mm10 Nov 2000	168 mm2018 · driest 18 mm in 2021	27
December	20.6°C13 Dec 2015	-13.2°C24 Dec 2022	81 mm10 Dec 2023	196 mm2023 · driest 12 mm in 2021	27

Typical days per month at FARMINGDALE REPUBLIC AP, 1991–2020
Month	Days 25°C+	Days 30°C+	Frost nights	Heavy rain (10 mm+)
January	0	0	24	2
February	0	0	22	2
March	0	0	15	3
April	<1	<1	2	3
May	5	<1	0	3
June	17	4	0	3
July	27	10	0	3
August	26	7	0	3
September	14	1	0	3
October	2	<1	<1	3
November	0	0	6	3
December	0	0	19	3

How often, not how much — every day in FARMINGDALE REPUBLIC AP’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%	20%	6%	15%	0.8–7.3°C
February	<1%	21%	6%	23%	1.9–8.3°C
March	3%	24%	8%	24%	7.0–12.4°C
April	15%	25%	9%	30%	13.2–16.5°C
May	41%	29%	9%	35%	18.9–21.8°C
June	68%	28%	10%	32%	24.6–27.3°C
July	76%	24%	8%	21%	26.4–30.2°C
August	77%	23%	9%	23%	26.5–29.5°C
September	72%	22%	9%	19%	23.0–25.2°C
October	31%	22%	9%	19%	16.6–20.7°C
November	4%	23%	8%	23%	10.4–14.7°C
December	<1%	27%	10%	30%	4.6–9.5°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.

2000Each stripe is one year’s mean temperature against the 26-year average. Warmest: 2020. Coolest: 2003.2025

The evidence behind this page

Nearby, measured,
and named.

Place identity: GeoNames 5131638
NOAA station: USW00054787 · FARMINGDALE REPUBLIC AP
Station distance: 6.3 km from the place centre
Climate period: 1991–2020
Minimum month coverage: 21 usable years
Daylight: Calculated from latitude 40.78°, mid-month, sunrise to sunset including refraction. Not a station measurement.
Sea temperature: NOAA OISST v2.1 1991–2020 monthly climatology, nearest open water 19 km from the place centre. A sheltered bay can run warmer than the open sea it is measured from.
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 FARMINGDALE REPUBLIC AP is what differs

West Babylon→West Islip→Deer Park→Lindenhurst→Copiague→Melville→

Or put two places side by side: Plainview vs West Babylon

Best time to visitPlainview.

September

July

May

The whole year,without the guesswork.

Nearby, measured,and named.

Best time to visit
Plainview.

The whole year,
without the guesswork.

Nearby, measured,
and named.