United States · 1991–2020

Best time to visit
Stoneboro.

September leads for comfortable weather in Stoneboro: typically 23.5°C by day, 8.8°C at night, with 101 mm of rain. Based on measured 1991–2020 NOAA station history.

Best comfortSeptember

Typical high23.5°C

Typical low8.8°C

Rain in September101 mm

Comfort

September

September · June · August

73climate match

Beach

August

August · July · June

53climate match

Outdoors

May

May · September · October

71climate match

The weakest month is January, scoring 5 against September’s 73 — days reach only 1.8°C, 22° 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

51.8° / -9°

Feb

53.8° / -8.5°

Mar

58.9° / -4.5°

Apr

3416.4° / 1.1°

May

6021.2° / 6.4°

Jun

7125.5° / 11.5°

Jul

6827.4° / 13.3°

Aug

7127.1° / 12.6°

Sep

7323.5° / 8.8°

Oct

4417.2° / 2.6°

Nov

119.9° / -1.5°

Dec

54.5° / -6°

Monthly climate evidence for Stoneboro — daylight is calculated from latitude, everything else is measured
Month	Day	Night	Rain	Wet days	Daylight	Comfort	Coverage
January	1.8°C	-9°C	86 mm	12	9 h 30	5	Good coverage
February	3.8°C	-8.5°C	55 mm	8.2	10 h 33	5	Good coverage
March	8.9°C	-4.5°C	84 mm	10.3	11 h 48	5	Good coverage
April	16.4°C	1.1°C	96 mm	10.6	13 h 16	34	Good coverage
May	21.2°C	6.4°C	97 mm	10.3	14 h 29	60	Good coverage
June	25.5°C	11.5°C	111 mm	11	15 h 09	71	Good coverage
July	27.4°C	13.3°C	122 mm	9.5	14 h 53	68	Good coverage
August	27.1°C	12.6°C	106 mm	8.4	13 h 50	71	Good coverage
September	23.5°C	8.8°C	101 mm	8.4	12 h 25	73	Good coverage
October	17.2°C	2.6°C	78 mm	8.6	11 h 01	44	Good coverage
November	9.9°C	-1.5°C	80 mm	9.7	9 h 48	11	Good coverage
December	4.5°C	-6°C	90 mm	11.8	9 h 12	5	Good coverage

Records at MERCER, 1950–2010
Month	Record high	Record low	Wettest day	Wettest / driest month	Years
January	20.0°C13 Jan 2005	-35.6°C19 Jan 1994	68 mm30 Jan 2002	167 mm2005 · driest 18 mm in 1956	55
February	23.3°C26 Feb 2000	-33.3°C27 Feb 1963	51 mm10 Feb 1959	172 mm2008 · driest 0 mm in 2010	57
March	27.8°C30 Mar 1986	-25.0°C8 Mar 1999	50 mm31 Mar 1987	151 mm2008 · driest 21 mm in 1958	58
April	31.1°C27 Apr 1990	-11.7°C10 Apr 1997	56 mm20 Apr 1963	186 mm1998 · driest 19 mm in 2009	58
May	32.2°C31 May 2006	-7.2°C28 May 1961	61 mm12 May 1974	183 mm1952 · driest 11 mm in 2009	58
June	36.7°C26 Jun 1952	-2.2°C7 Jun 1958	84 mm12 Jun 1986	216 mm1986 · driest 23 mm in 1991	58
July	37.8°C14 Jul 1954	0.6°C9 Jul 1963	87 mm29 Jul 1999	290 mm2003 · driest 17 mm in 1997	57
August	37.8°C30 Aug 1953	-0.6°C29 Aug 1982	102 mm17 Aug 2002	201 mm1956 · driest 12 mm in 1993	56
September	38.3°C2 Sep 1953	-5.0°C27 Sep 1957	114 mm9 Sep 2004	211 mm1977 · driest 17 mm in 1960	57
October	31.1°C8 Oct 2007	-9.4°C29 Oct 1965	65 mm19 Oct 1968	184 mm1959 · driest 6 mm in 1963	54
November	27.2°C3 Nov 1961	-18.3°C30 Nov 1958	70 mm5 Nov 1985	280 mm1985 · driest 0 mm in 2009	56
December	22.8°C3 Dec 1982	-28.3°C22 Dec 1989	45 mm14 Dec 2007	166 mm2007 · driest 11 mm in 1958	54

Typical days per month at MERCER, 1991–2020
Month	Days 25°C+	Days 30°C+	Frost nights	Heavy rain (10 mm+)	Snow days
January	0	0	27	2	10
February	0	0	25	2	7
March	<1	0	24	3	5
April	2	<1	13	3	1
May	8	<1	3	3	0
June	17	4	<1	4	0
July	23	7	0	4	0
August	21	6	0	3	0
September	12	2	1	3	0
October	2	<1	11	3	<1
November	<1	0	19	3	2
December	0	0	25	3	6

How often, not how much — every day in MERCER’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%	36%	7%	49%	-2.4–4.9°C
February	<1%	33%	7%	44%	-0.4–6.9°C
March	6%	36%	10%	52%	5.5–11.5°C
April	22%	36%	11%	49%	13.0–18.0°C
May	45%	35%	11%	48%	18.2–23.9°C
June	62%	34%	14%	39%	24.0–27.5°C
July	71%	29%	12%	30%	25.9–29.4°C
August	72%	28%	10%	32%	25.4–28.9°C
September	60%	28%	11%	33%	21.3–25.9°C
October	29%	28%	8%	35%	14.4–19.6°C
November	4%	36%	10%	50%	7.5–12.7°C
December	<1%	40%	8%	57%	-0.1–7.2°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.

1953Each stripe is one year’s mean temperature against the 49-year average. Warmest: 1991. Coolest: 2003.2008

The evidence behind this page

Nearby, measured,
and named.

Place identity: GeoNames 5214311
NOAA station: USC00365651 · MERCER
Station distance: 16.7 km from the place centre
Climate period: 1991–2020
Minimum month coverage: 17 usable years
Daylight: Calculated from latitude 41.34°, 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 MERCER is what differs

Hermitage→Mercer→Lake Latonka→Sandy Lake→Clark→Fredonia→

Or put two places side by side: Stoneboro vs Hermitage

Best time to visitStoneboro.

September

August

May

The whole year,without the guesswork.

Nearby, measured,and named.

Best time to visit
Stoneboro.

The whole year,
without the guesswork.

Nearby, measured,
and named.