United States · 1991–2020

Best time to visit
Union City.

September leads for comfortable weather in Union City: typically 24.2°C by day, 11.9°C at night, with 75 mm of rain. Based on measured 1991–2020 NOAA station history.

Best comfortSeptember

Typical high24.2°C

Typical low11.9°C

Rain in September75 mm

Comfort

September

September · August · June

85climate match

Beach

July

July · August · June

70climate match

Outdoors

October

October · May · September

74climate match

The weakest month is January, scoring 5 against September’s 85 — days reach only 0.7°C, 23° 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

50.7° / -7.8°

Feb

52.7° / -6.6°

Mar

98.7° / -1.6°

Apr

3916.1° / 4.7°

May

6621.5° / 10.6°

Jun

7226.4° / 15.9°

Jul

6828.2° / 17.3°

Aug

7427.5° / 16.2°

Sep

8524.2° / 11.9°

Oct

5317.6° / 6°

Nov

1710.1° / 0.5°

Dec

53° / -5°

Monthly climate evidence for Union City — daylight is calculated from latitude, everything else is measured
Month	Day	Night	Rain	Wet days	Daylight	Comfort	Coverage
January	0.7°C	-7.8°C	64 mm	7.6	9 h 36	5	Good coverage
February	2.7°C	-6.6°C	51 mm	6.5	10 h 36	5	Good coverage
March	8.7°C	-1.6°C	71 mm	8.8	11 h 49	9	Good coverage
April	16.1°C	4.7°C	103 mm	11	13 h 13	39	Good coverage
May	21.5°C	10.6°C	111 mm	11	14 h 23	66	Good coverage
June	26.4°C	15.9°C	120 mm	10	15 h 01	72	Good coverage
July	28.2°C	17.3°C	101 mm	8	14 h 46	68	Good coverage
August	27.5°C	16.2°C	89 mm	7.6	13 h 45	74	Good coverage
September	24.2°C	11.9°C	75 mm	6.9	12 h 24	85	Good coverage
October	17.6°C	6°C	78 mm	7.1	11 h 04	53	Good coverage
November	10.1°C	0.5°C	84 mm	8.1	9 h 54	17	Good coverage
December	3°C	-5°C	65 mm	8.1	9 h 19	5	Good coverage

Records at WINCHESTER AIRPORT 3 E, 1942–2012
Month	Record high	Record low	Wettest day	Wettest / driest month	Years
January	21.7°C26 Jan 1950	-32.2°C20 Jan 1994	71 mm4 Jan 1950	272 mm1950 · driest 4 mm in 1984	69
February	22.8°C26 Feb 2000	-27.8°C10 Feb 1975	55 mm25 Feb 1956	144 mm1950 · driest 0 mm in 1979	70
March	27.8°C25 Mar 1945	-23.9°C9 Mar 1984	63 mm23 Mar 2007	168 mm1963 · driest 12 mm in 1983	69
April	29.4°C23 Apr 1985	-11.1°C7 Apr 1982	81 mm21 Apr 1964	282 mm1964 · driest 2 mm in 1982	69
May	33.3°C6 May 1952	-4.4°C1 May 1963	71 mm26 May 2011	200 mm1943 · driest 29 mm in 1964	67
June	38.3°C26 Jun 1988	2.8°C5 Jun 1945	164 mm3 Jun 1987	371 mm1958 · driest 12 mm in 1984	70
July	38.3°C15 Jul 1954	6.1°C10 Jul 1963	124 mm14 Jul 1979	354 mm1979 · driest 13 mm in 1975	70
August	37.2°C22 Aug 1955	1.7°C29 Aug 1965	108 mm10 Aug 1969	256 mm1979 · driest 29 mm in 1946	70
September	38.9°C3 Sep 1953	-2.8°C28 Sep 1942	111 mm22 Sep 1950	230 mm2003 · driest 3 mm in 1954	70
October	31.7°C5 Oct 1951	-7.2°C18 Oct 1976	68 mm24 Oct 2001	221 mm2001 · driest 1 mm in 1963	70
November	28.3°C1 Nov 1950	-20.6°C30 Nov 1958	89 mm14 Nov 1993	204 mm1985 · driest 19 mm in 1980	69
December	21.7°C7 Dec 1998	-30.0°C22 Dec 1989	64 mm30 Dec 1990	186 mm1990 · driest 4 mm in 1958	70

Typical days per month at WINCHESTER AIRPORT 3 E, 1991–2020
Month	Days 25°C+	Days 30°C+	Frost nights	Heavy rain (10 mm+)	Snow days
January	0	0	26	2	4
February	0	0	25	2	3
March	<1	0	20	2	2
April	3	0	6	3	<1
May	9	2	<1	4	0
June	20	7	0	4	0
July	27	10	0	3	0
August	25	8	0	3	0
September	14	3	<1	2	0
October	4	<1	4	3	0
November	0	0	15	3	<1
December	0	0	25	2	3

How often, not how much — every day in WINCHESTER AIRPORT 3 E’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%	23%	6%	23%	-3.1–4.5°C
February	<1%	21%	6%	24%	-0.8–6.0°C
March	5%	29%	8%	36%	5.2–11.6°C
April	19%	35%	12%	47%	13.2–18.5°C
May	44%	34%	12%	44%	19.0–24.8°C
June	66%	30%	12%	34%	25.0–28.8°C
July	73%	26%	11%	27%	26.8–30.8°C
August	75%	24%	9%	24%	26.2–29.6°C
September	65%	23%	8%	21%	22.3–26.6°C
October	33%	23%	8%	23%	15.4–21.1°C
November	5%	29%	9%	33%	6.7–12.8°C
December	0%	26%	7%	31%	-0.6–6.6°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.

1943Each stripe is one year’s mean temperature against the 64-year average. Warmest: 1946. Coolest: 1963.2011

The evidence behind this page

Nearby, measured,
and named.

Place identity: GeoNames 11820632
NOAA station: USC00129678 · WINCHESTER AIRPORT 3 E
Station distance: 10.4 km from the place centre
Climate period: 1991–2020
Minimum month coverage: 20 usable years
Daylight: Calculated from latitude 40.20°, 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 WINCHESTER AIRPORT 3 E is what differs

Winchester→Union City→Lynn→Saratoga→Bartonia→Bloomingport→

Or put two places side by side: Union City vs Winchester

Best time to visitUnion City.