United States · 1991–2020

Best time to visit
Witmer.

September leads for comfortable weather in Witmer: typically 25°C by day, 13.4°C at night, with 122 mm of rain. Based on measured 1991–2020 NOAA station history.

Best comfortSeptember

Typical high25°C

Typical low13.4°C

Rain in September122 mm

Comfort

September

September · May · June

77climate match

Beach

August

August · July · June

76climate match

Outdoors

October

October · May · April

73climate match

The weakest month is January, scoring 5 against September’s 77 — 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° / -5.2°

Feb

55.4° / -4.5°

Mar

1510.6° / -0.5°

Apr

4817.6° / 4.9°

May

7423.1° / 10.4°

Jun

7227.6° / 15.6°

Jul

5730° / 18.5°

Aug

6829° / 17.4°

Sep

7725° / 13.4°

Oct

5318.6° / 6.8°

Nov

2612.1° / 1.3°

Dec

56.3° / -2.5°

Monthly climate evidence for Witmer — daylight is calculated from latitude, everything else is measured
Month	Day	Night	Rain	Wet days	Daylight	Comfort	Coverage
January	3.8°C	-5.2°C	76 mm	8.3	9 h 37	5	Strong coverage
February	5.4°C	-4.5°C	64 mm	7.2	10 h 37	5	Strong coverage
March	10.6°C	-0.5°C	90 mm	8.6	11 h 49	15	Strong coverage
April	17.6°C	4.9°C	90 mm	8.6	13 h 12	48	Strong coverage
May	23.1°C	10.4°C	93 mm	9.7	14 h 22	74	Strong coverage
June	27.6°C	15.6°C	105 mm	8.8	15 h	72	Strong coverage
July	30°C	18.5°C	121 mm	8.7	14 h 45	57	Strong coverage
August	29°C	17.4°C	91 mm	7.1	13 h 45	68	Strong coverage
September	25°C	13.4°C	122 mm	7.6	12 h 24	77	Strong coverage
October	18.6°C	6.8°C	108 mm	7.3	11 h 04	53	Strong coverage
November	12.1°C	1.3°C	83 mm	6.6	9 h 54	26	Strong coverage
December	6.3°C	-2.5°C	89 mm	8.3	9 h 20	5	Strong coverage

Records at LANCASTER 2 NE FILT PLT, 1949–2026
Month	Record high	Record low	Wettest day	Wettest / driest month	Years
January	21.1°C29 Jan 2002	-26.7°C21 Jan 1994	52 mm9 Jan 2024	168 mm1979 · driest 7 mm in 1981	50
February	27.8°C21 Feb 2018	-22.8°C18 Feb 1979	48 mm6 Feb 2004	134 mm2018 · driest 7 mm in 2002	50
March	31.1°C30 Mar 1998	-18.9°C10 Mar 1984	82 mm21 Mar 2000	176 mm1993 · driest 21 mm in 2006	50
April	33.9°C17 Apr 2002	-8.9°C7 Apr 1982	62 mm22 Apr 2006	216 mm1983 · driest 18 mm in 1985	48
May	37.2°C24 May 1995	-6.1°C9 May 2020	71 mm5 May 1989	241 mm1989 · driest 7 mm in 2023	50
June	37.2°C22 Jun 2024	0.6°C4 Jun 2019	78 mm1 Jun 2012	234 mm1982 · driest 21 mm in 1988	49
July	39.4°C22 Jul 2011	7.8°C1 Jul 1986	115 mm7 Jul 1984	279 mm2014 · driest 26 mm in 2002	49
August	38.3°C2 Aug 2002	2.8°C30 Aug 1986	117 mm28 Aug 1978	307 mm1978 · driest 13 mm in 1995	49
September	37.2°C2 Sep 1980	1.1°C18 Sep 1986	155 mm16 Sep 1999	323 mm1999 · driest 20 mm in 2007	48
October	33.9°C2 Oct 2019	-5.0°C31 Oct 1988	142 mm8 Oct 2005	273 mm2005 · driest 1 mm in 2024	48
November	30.0°C3 Nov 2003	-11.7°C23 Nov 2018	70 mm16 Nov 2006	201 mm2018 · driest 15 mm in 1976	49
December	24.4°C7 Dec 1998	-19.4°C26 Dec 1980	66 mm12 Dec 1983	225 mm1983 · driest 15 mm in 1998	50

Typical days per month at LANCASTER 2 NE FILT PLT, 1991–2020
Month	Days 25°C+	Days 30°C+	Frost nights	Heavy rain (10 mm+)	Snow days
January	0	0	26	3	3
February	0	0	23	2	3
March	<1	0	18	3	1
April	4	<1	4	3	<1
May	12	4	<1	3	0
June	24	9	0	4	0
July	29	17	0	4	0
August	28	13	0	3	0
September	16	4	0	4	0
October	4	<1	2	3	0
November	<1	0	13	3	<1
December	0	0	23	3	1

How often, not how much — every day in LANCASTER 2 NE FILT PLT’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%	27%	8%	30%	0.6–6.9°C
February	1%	26%	8%	29%	2.3–8.8°C
March	9%	27%	9%	32%	7.9–14.4°C
April	27%	29%	10%	35%	15.7–19.8°C
May	53%	33%	12%	42%	20.6–25.3°C
June	70%	29%	11%	34%	26.1–29.2°C
July	72%	28%	12%	29%	27.9–32.0°C
August	76%	24%	10%	22%	27.4–30.5°C
September	69%	24%	10%	25%	23.3–27.0°C
October	35%	24%	9%	24%	16.8–20.9°C
November	8%	24%	9%	25%	9.9–14.7°C
December	1%	26%	10%	28%	3.3–9.8°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.

1981Each stripe is one year’s mean temperature against the 44-year average. Warmest: 2024. Coolest: 2014.2025

The evidence behind this page

Nearby, measured,
and named.

Place identity: GeoNames 5219853
NOAA station: USC00364763 · LANCASTER 2 NE FILT PLT
Station distance: 5.4 km from the place centre
Climate period: 1991–2020
Minimum month coverage: 29 usable years
Daylight: Calculated from latitude 40.05°, 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 LANCASTER 2 NE FILT PLT is what differs

Lancaster→Willow Street→Leola→Strasburg→Lampeter→Wheatland→

Or put two places side by side: Witmer vs Lancaster

Best time to visitWitmer.