United States · 1991–2020

Best time to visit
Allentown.

August leads for comfortable weather in Allentown: typically 24.7°C by day, 14.4°C at night, with 96 mm of rain. Based on measured 1991–2020 NOAA station history.

Best comfortAugust

Typical high24.7°C

Typical low14.4°C

Rain in August96 mm

Comfort

August

August · July · June

83climate match

Beach

July

July · August · June

53climate match

Outdoors

September

September · May · June

82climate match

The weakest month is January, scoring 5 against August’s 83 — days reach only -1.8°C, 26° 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

5-1.8° / -11.6°

Feb

50.4° / -10.6°

Mar

54.7° / -5.9°

Apr

2212.3° / 0.6°

May

5619° / 7.3°

Jun

7422.9° / 12.4°

Jul

7725.5° / 15.4°

Aug

8324.7° / 14.4°

Sep

6920.9° / 10.2°

Oct

3414.3° / 4.4°

Nov

57.4° / -1.1°

Dec

51.6° / -6.7°

Monthly climate evidence for Allentown — daylight is calculated from latitude, everything else is measured
Month	Day	Night	Rain	Wet days	Daylight	Comfort	Coverage
January	-1.8°C	-11.6°C	84 mm	9.9	9 h 18	5	Strong coverage
February	0.4°C	-10.6°C	74 mm	7.5	10 h 26	5	Strong coverage
March	4.7°C	-5.9°C	95 mm	9.5	11 h 47	5	Strong coverage
April	12.3°C	0.6°C	91 mm	9.3	13 h 21	22	Strong coverage
May	19°C	7.3°C	90 mm	9.9	14 h 39	56	Strong coverage
June	22.9°C	12.4°C	117 mm	9.8	15 h 23	74	Strong coverage
July	25.5°C	15.4°C	116 mm	9.5	15 h 06	77	Strong coverage
August	24.7°C	14.4°C	96 mm	8.1	13 h 57	83	Strong coverage
September	20.9°C	10.2°C	92 mm	7.3	12 h 27	69	Strong coverage
October	14.3°C	4.4°C	105 mm	9.2	10 h 57	34	Strong coverage
November	7.4°C	-1.1°C	91 mm	8.2	9 h 38	5	Strong coverage
December	1.6°C	-6.7°C	105 mm	10.4	8 h 59	5	Strong coverage

What has changed

Allentown runs +0.0°C
on the 1961–1990 baseline.

Each bar compares the 2011–2025 daytime average for that month against the same month in 1961–1990, measured at the same station. Months where the older record is too thin to compare are left blank.

Jan

+0.5

Feb

—

Mar

—

Apr

-0.6

May

-0.2

Jun

-0.9

Jul

-0.8

Aug

-0.5

Sep

+0.8

Oct

+0.8

Nov

-0.3

Dec

+1.4

August daytime highs, 2011–2025. Last recorded: 24.5°C.

Records at CONKLINGVILLE DAM, 1971–2026
Month	Record high	Record low	Wettest day	Wettest / driest month	Years
January	15.6°C16 Jan 1995	-33.9°C20 Jan 1994	64 mm8 Jan 1998	224 mm1979 · driest 6 mm in 2020	48
February	16.1°C22 Feb 2018	-34.4°C18 Feb 1979	45 mm25 Feb 2016	185 mm2008 · driest 4 mm in 1987	46
March	26.7°C31 Mar 1998	-25.0°C10 Mar 1984	69 mm22 Mar 1980	207 mm1977 · driest 21 mm in 2004	47
April	30.6°C18 Apr 2002	-13.9°C7 Apr 1982	75 mm4 Apr 1990	207 mm1983 · driest 18 mm in 2005	47
May	32.2°C11 May 1979	-2.8°C7 May 1981	68 mm29 May 1984	221 mm1984 · driest 12 mm in 2018	47
June	33.3°C13 Jun 1983	-1.1°C3 Jun 1986	57 mm13 Jun 1994	278 mm1998 · driest 14 mm in 2025	46
July	35.0°C10 Jul 1988	6.1°C4 Jul 1979	83 mm29 Jul 2026	274 mm2021 · driest 13 mm in 2025	46
August	32.8°C9 Aug 2001	1.7°C29 Aug 1982	140 mm29 Aug 2011	269 mm2011 · driest 25 mm in 2013	47
September	31.1°C10 Sep 2002	-2.2°C29 Sep 1980	102 mm17 Sep 1999	207 mm1999 · driest 24 mm in 2019	48
October	27.8°C23 Oct 1979	-8.3°C28 Oct 1976	105 mm1 Oct 2010	261 mm1995 · driest 2 mm in 2024	46
November	23.9°C2 Nov 1982	-16.7°C22 Nov 2018	74 mm10 Nov 1990	160 mm1983 · driest 16 mm in 2025	46
December	19.4°C5 Dec 1998	-30.0°C25 Dec 1980	61 mm2 Dec 1996	204 mm1983 · driest 31 mm in 1999	46

Typical days per month at CONKLINGVILLE DAM, 1991–2020
Month	Days 25°C+	Days 30°C+	Frost nights	Heavy rain (10 mm+)	Snow days
January	0	0	27	3	7
February	0	0	25	3	6
March	0	0	25	3	4
April	<1	<1	13	3	<1
May	4	<1	1	3	<1
June	10	1	0	4	0
July	17	2	0	3	0
August	15	1	0	3	0
September	5	<1	<1	3	0
October	<1	0	5	3	<1
November	0	0	19	3	2
December	0	0	26	3	5

How often, not how much — every day in CONKLINGVILLE DAM’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%	33%	9%	41%	-4.4–1.2°C
February	0%	30%	10%	34%	-2.1–3.5°C
March	1%	31%	11%	38%	2.8–8.0°C
April	10%	33%	10%	38%	10.8–14.7°C
May	35%	32%	11%	41%	16.6–21.4°C
June	57%	32%	11%	36%	21.8–24.9°C
July	68%	29%	10%	29%	23.6–27.2°C
August	69%	27%	11%	26%	23.2–26.4°C
September	46%	27%	10%	28%	19.5–22.7°C
October	12%	27%	9%	31%	12.3–16.5°C
November	1%	32%	11%	41%	5.1–10.4°C
December	0%	33%	11%	44%	-1.5–4.7°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.

1976Each stripe is one year’s mean temperature against the 38-year average. Warmest: 2012. Coolest: 1976.2025

The evidence behind this page

Nearby, measured,
and named.

Place identity: GeoNames 5107045
NOAA station: USC00301708 · CONKLINGVILLE DAM
Station distance: 2.4 km from the place centre
Climate period: 1991–2020
Minimum month coverage: 25 usable years
Daylight: Calculated from latitude 43.33°, 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 CONKLINGVILLE DAM is what differs

Corinth→Lake Luzerne→Edinburg→Northville→Hadley→Athol→

Or put two places side by side: Allentown vs Corinth

Best time to visitAllentown.