United States · 1991–2020

Best time to visit
Wellsville.

September leads for comfortable weather in Wellsville: typically 26.8°C by day, 14.8°C at night, with 115 mm of rain. Based on measured 1991–2020 NOAA station history.

Best comfortSeptember

Typical high26.8°C

Typical low14.8°C

Rain in September115 mm

Comfort

September

September · May · October

76climate match

Beach

July

July · August · June

76climate match

Outdoors

October

October · April · March

83climate match

The weakest month is January, scoring 5 against September’s 76 — 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° / -7.5°

Feb

97° / -4.7°

Mar

3413.4° / 0.7°

Apr

5318.6° / 6.4°

May

7223.5° / 12.7°

Jun

6028.5° / 18°

Jul

5431.2° / 20.4°

Aug

5730.8° / 19.5°

Sep

7626.8° / 14.8°

Oct

6520.2° / 8°

Nov

3012° / 0.9°

Dec

66.3° / -3.9°

Monthly climate evidence for Wellsville — daylight is calculated from latitude, everything else is measured
Month	Day	Night	Rain	Wet days	Daylight	Comfort	Coverage
January	3.4°C	-7.5°C	26 mm	3.2	9 h 44	5	Good coverage
February	7°C	-4.7°C	31 mm	3	10 h 41	9	Good coverage
March	13.4°C	0.7°C	57 mm	5.4	11 h 50	34	Strong coverage
April	18.6°C	6.4°C	100 mm	8.2	13 h 09	53	Strong coverage
May	23.5°C	12.7°C	146 mm	10.6	14 h 16	72	Strong coverage
June	28.5°C	18°C	141 mm	8.6	14 h 51	60	Strong coverage
July	31.2°C	20.4°C	98 mm	7.3	14 h 37	54	Strong coverage
August	30.8°C	19.5°C	100 mm	7.1	13 h 40	57	Strong coverage
September	26.8°C	14.8°C	115 mm	6.2	12 h 23	76	Strong coverage
October	20.2°C	8°C	88 mm	6	11 h 07	65	Good coverage
November	12°C	0.9°C	64 mm	4.4	10 h 01	30	Good coverage
December	6.3°C	-3.9°C	38 mm	4.1	9 h 28	6	Good coverage

Records at HILLSDALE LAKE, 1985–2024
Month	Record high	Record low	Wettest day	Wettest / driest month	Years
January	22.8°C29 Jan 2015	-23.3°C16 Jan 2024	57 mm31 Jan 2002	63 mm2019 · driest 0 mm in 1986	36
February	26.7°C23 Feb 2017	-26.1°C16 Feb 2021	73 mm21 Feb 1997	121 mm1985 · driest 0 mm in 2006	32
March	30.0°C20 Mar 2017	-20.0°C3 Mar 2014	131 mm5 Mar 2004	168 mm2004 · driest 12 mm in 2011	34
April	32.8°C26 Apr 2012	-7.8°C5 Apr 2018	87 mm28 Apr 1994	221 mm1994 · driest 12 mm in 2000	39
May	33.9°C31 May 1998	0.0°C3 May 2013	116 mm16 May 1990	352 mm1995 · driest 28 mm in 2009	39
June	38.9°C25 Jun 1988	7.2°C5 Jun 1993	141 mm8 Jun 1994	222 mm2014 · driest 26 mm in 2023	38
July	41.1°C30 Jul 2012	11.1°C5 Jul 1997	82 mm1 Jul 2007	330 mm1993 · driest 16 mm in 1991	38
August	41.7°C30 Aug 2000	6.7°C28 Aug 1986	225 mm22 Aug 2017	293 mm2017 · driest 6 mm in 2000	39
September	42.2°C3 Sep 2000	1.1°C23 Sep 1995	160 mm1 Sep 2003	347 mm1986 · driest 3 mm in 2004	37
October	33.9°C3 Oct 2006	-6.1°C31 Oct 1993	80 mm25 Oct 2023	179 mm1986 · driest 2 mm in 2012	32
November	27.8°C9 Nov 2006	-15.6°C13 Nov 1986	75 mm1 Nov 1998	214 mm1992 · driest 0 mm in 1989	29
December	23.3°C16 Dec 2021	-29.4°C22 Dec 1989	51 mm20 Dec 1987	117 mm1992 · driest 0 mm in 2002	31

Typical days per month at HILLSDALE LAKE, 1991–2020
Month	Days 25°C+	Days 30°C+	Frost nights	Heavy rain (10 mm+)	Snow days
January	0	0	21	<1	2
February	0	0	17	<1	1
March	1	0	11	2	<1
April	4	<1	3	3	0
May	13	3	<1	4	0
June	24	12	0	4	0
July	27	19	0	3	0
August	25	17	0	2	0
September	16	7	0	3	0
October	6	<1	1	2	0
November	<1	0	11	2	<1
December	0	0	19	1	1

How often, not how much — every day in HILLSDALE LAKE’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%	11%	3%	5%	1.2–8.5°C
February	4%	14%	4%	8%	2.4–10.6°C
March	19%	19%	6%	16%	9.2–15.7°C
April	37%	27%	10%	31%	15.7–21.5°C
May	54%	33%	15%	42%	21.9–26.6°C
June	71%	27%	12%	31%	26.5–30.5°C
July	76%	24%	10%	27%	29.3–33.3°C
August	75%	24%	9%	24%	28.2–33.4°C
September	72%	22%	11%	25%	24.3–29.1°C
October	46%	19%	7%	17%	17.4–22.0°C
November	16%	15%	7%	11%	8.5–16.4°C
December	1%	12%	4%	6%	2.2–9.0°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.

The evidence behind this page

Nearby, measured,
and named.

Place identity: GeoNames 4281412
NOAA station: USC00143686 · HILLSDALE LAKE
Station distance: 17.7 km from the place centre
Climate period: 1991–2020
Minimum month coverage: 16 usable years
Daylight: Calculated from latitude 38.72°, 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 HILLSDALE LAKE is what differs

Spring Hill→Hillsdale→Antioch→Chiles→Wagstaff→

Or put two places side by side: Wellsville vs Spring Hill

Best time to visitWellsville.