United States · 1991–2020

Best time to visit
Port Trevorton.

September leads for comfortable weather in Port Trevorton: typically 24.3°C by day, 11.8°C at night, with 112 mm of rain. Based on measured 1991–2020 NOAA station history.

Best comfortSeptember

Typical high24.3°C

Typical low11.8°C

Rain in September112 mm

Comfort

September

September · June · August

78climate match

Beach

July

July · August · June

68climate match

Outdoors

May

May · October · September

72climate match

The weakest month is January, scoring 5 against September’s 78 — days reach only 2°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

52° / -7°

Feb

53.6° / -6.4°

Mar

68.7° / -2.5°

Apr

3816.1° / 3°

May

6722° / 8.9°

Jun

7326.9° / 14.4°

Jul

6329.4° / 16.8°

Aug

7128.2° / 15.9°

Sep

7824.3° / 11.8°

Oct

4717.5° / 5.4°

Nov

1910.6° / -0.1°

Dec

54.5° / -3.9°

Monthly climate evidence for Port Trevorton — daylight is calculated from latitude, everything else is measured
Month	Day	Night	Rain	Wet days	Daylight	Comfort	Coverage
January	2°C	-7°C	78 mm	8.6	9 h 33	5	Strong coverage
February	3.6°C	-6.4°C	58 mm	7.3	10 h 35	5	Strong coverage
March	8.7°C	-2.5°C	83 mm	8.5	11 h 49	6	Strong coverage
April	16.1°C	3°C	94 mm	9.7	13 h 14	38	Strong coverage
May	22°C	8.9°C	96 mm	10.6	14 h 25	67	Strong coverage
June	26.9°C	14.4°C	111 mm	9.8	15 h 04	73	Strong coverage
July	29.4°C	16.8°C	109 mm	8.9	14 h 49	63	Strong coverage
August	28.2°C	15.9°C	96 mm	8.4	13 h 47	71	Strong coverage
September	24.3°C	11.8°C	112 mm	7.8	12 h 25	78	Strong coverage
October	17.5°C	5.4°C	98 mm	8.3	11 h 03	47	Strong coverage
November	10.6°C	-0.1°C	77 mm	7.2	9 h 51	19	Strong coverage
December	4.5°C	-3.9°C	82 mm	8.2	9 h 16	5	Strong coverage

Records at SELINSGROVE 2 S, 1894–2026
Month	Record high	Record low	Wettest day	Wettest / driest month	Years
January	22.2°C13 Jan 1932	-32.8°C14 Jan 1912	58 mm16 Jan 1924	199 mm1978 · driest 11 mm in 1981	112
February	25.0°C25 Feb 1985	-30.0°C11 Feb 1899	48 mm4 Feb 2022	179 mm1981 · driest 16 mm in 1941	111
March	30.6°C31 Mar 1986	-23.9°C18 Mar 1900	81 mm5 Mar 2008	170 mm1936 · driest 9 mm in 1910	112
April	34.4°C25 Apr 1915	-13.9°C1 Apr 1923	74 mm3 Apr 2005	224 mm1993 · driest 10 mm in 1918	113
May	35.6°C20 May 1996	-5.0°C5 May 1911	88 mm27 May 1946	288 mm1946 · driest 11 mm in 1977	113
June	38.9°C26 Jun 1952	0.6°C10 Jun 1913	93 mm28 Jun 2006	267 mm2006 · driest 8 mm in 1952	114
July	40.6°C4 Jul 1911	5.0°C5 Jul 1909	140 mm24 Jul 2018	327 mm2018 · driest 17 mm in 1910	114
August	40.6°C4 Aug 1930	1.7°C31 Aug 2025	103 mm28 Aug 2006	274 mm1955 · driest 14 mm in 1995	113
September	38.9°C2 Sep 1953	-3.9°C27 Sep 1947	158 mm18 Sep 2004	481 mm2011 · driest 11 mm in 1914	113
October	33.3°C10 Oct 2007	-8.9°C28 Oct 1976	114 mm2 Oct 1929	223 mm1976 · driest 12 mm in 1924	113
November	28.9°C1 Nov 1950	-20.6°C27 Nov 1938	97 mm16 Nov 1926	182 mm2018 · driest 11 mm in 1908	113
December	22.8°C30 Dec 1984	-26.7°C17 Dec 1951	72 mm25 Dec 2020	178 mm1983 · driest 3 mm in 1917	112

Typical days per month at SELINSGROVE 2 S, 1991–2020
Month	Days 25°C+	Days 30°C+	Frost nights	Heavy rain (10 mm+)	Snow days
January	0	0	28	3	5
February	0	0	26	2	4
March	<1	0	22	3	2
April	3	<1	9	3	<1
May	10	3	<1	3	0
June	22	8	0	4	0
July	29	14	0	4	0
August	27	10	0	3	0
September	14	3	0	3	0
October	3	<1	4	3	<1
November	<1	0	17	3	<1
December	0	0	25	3	3

How often, not how much — every day in SELINSGROVE 2 S’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%	28%	8%	31%	-0.9–5.9°C
February	<1%	27%	8%	28%	0.2–6.9°C
March	6%	30%	10%	37%	5.9–12.6°C
April	23%	32%	10%	40%	14.2–18.6°C
May	50%	34%	11%	43%	20.1–25.1°C
June	66%	32%	12%	38%	25.3–29.0°C
July	70%	30%	11%	34%	27.8–31.4°C
August	72%	28%	10%	30%	26.5–30.3°C
September	66%	25%	10%	28%	22.4–27.2°C
October	29%	26%	9%	27%	15.7–20.3°C
November	5%	25%	8%	27%	8.5–13.3°C
December	<1%	26%	9%	28%	1.6–7.0°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.

1895Each stripe is one year’s mean temperature against the 107-year average. Warmest: 1931. Coolest: 1895.2025

The evidence behind this page

Nearby, measured,
and named.

Place identity: GeoNames 5206971
NOAA station: USC00367931 · SELINSGROVE 2 S
Station distance: 8.4 km from the place centre
Climate period: 1991–2020
Minimum month coverage: 30 usable years
Daylight: Calculated from latitude 40.71°, 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 SELINSGROVE 2 S is what differs

Selinsgrove→Middleburg→Freeburg→Richfield→Dalmatia→Mount Pleasant Mills→

Or put two places side by side: Port Trevorton vs Selinsgrove

Best time to visitPort Trevorton.

September

July

May

The whole year,without the guesswork.

Nearby, measured,and named.

Best time to visit
Port Trevorton.

The whole year,
without the guesswork.

Nearby, measured,
and named.