United States · 1991–2020

Best time to visit
Aspen.

August leads for comfortable weather in Aspen: typically 24.2°C by day, 8.2°C at night, with 44 mm of rain. Based on measured 1991–2020 NOAA station history.

Best comfortAugust

Typical high24.2°C

Typical low8.2°C

Rain in August44 mm

Comfort

August

August · June · July

80climate match

Beach

July

July · August · June

46climate match

Outdoors

June

June · September · August

81climate match

The weakest month is January, scoring 5 against August’s 80 — days reach only 1.4°C, 23° below the 24°C the score treats as ideal, and nights drop to -12.3°C.

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

51.4° / -12.3°

Feb

53.3° / -10.9°

Mar

57.4° / -6.8°

Apr

1411.3° / -3.1°

May

4417° / 1.4°

Jun

7722.7° / 5.5°

Jul

7625.6° / 8.7°

Aug

8024.2° / 8.2°

Sep

6420.8° / 4.4°

Oct

3214.3° / -1.3°

Nov

56.8° / -6.9°

Dec

51.1° / -12.3°

Monthly climate evidence for Aspen — daylight is calculated from latitude, everything else is measured
Month	Day	Night	Rain	Wet days	Daylight	Comfort	Coverage
January	1.4°C	-12.3°C	54 mm	10	9 h 41	5	Strong coverage
February	3.3°C	-10.9°C	57 mm	10.6	10 h 40	5	Strong coverage
March	7.4°C	-6.8°C	64 mm	10	11 h 50	5	Strong coverage
April	11.3°C	-3.1°C	69 mm	10.7	13 h 10	14	Strong coverage
May	17°C	1.4°C	55 mm	8.8	14 h 18	44	Strong coverage
June	22.7°C	5.5°C	28 mm	5	14 h 54	77	Strong coverage
July	25.6°C	8.7°C	50 mm	9.4	14 h 40	76	Strong coverage
August	24.2°C	8.2°C	44 mm	9.3	13 h 42	80	Strong coverage
September	20.8°C	4.4°C	48 mm	8.1	12 h 24	64	Strong coverage
October	14.3°C	-1.3°C	50 mm	7.8	11 h 06	32	Strong coverage
November	6.8°C	-6.9°C	53 mm	8.3	9 h 58	5	Strong coverage
December	1.1°C	-12.3°C	51 mm	9.5	9 h 25	5	Strong coverage

Records at ASPEN 1SW, 1980–2026
Month	Record high	Record low	Wettest day	Wettest / driest month	Years
January	14.4°C17 Jan 2000	-28.9°C8 Jan 1982	56 mm31 Jan 2014	108 mm2008 · driest 7 mm in 1981	45
February	15.6°C25 Feb 1989	-31.7°C7 Feb 1989	49 mm21 Feb 1996	120 mm1996 · driest 21 mm in 1982	46
March	22.8°C26 Mar 2026	-25.6°C3 Mar 2002	41 mm28 Mar 1993	154 mm2019 · driest 14 mm in 2012	45
April	23.3°C30 Apr 2007	-17.8°C5 Apr 1983	36 mm8 Apr 2018	162 mm2011 · driest 12 mm in 1986	46
May	30.0°C31 May 2003	-9.4°C2 May 2013	33 mm4 May 2001	138 mm1995 · driest 5 mm in 2002	46
June	31.1°C8 Jun 2004	-6.7°C4 Jun 1993	60 mm7 Jun 1984	110 mm1984 · driest 0 mm in 2002	45
July	32.8°C6 Jul 1989	-1.7°C5 Jul 1993	31 mm25 Jul 2005	108 mm1998 · driest 3 mm in 2023	46
August	31.1°C17 Aug 2002	-1.7°C25 Aug 1992	33 mm2 Aug 2022	125 mm2010 · driest 14 mm in 1996	46
September	30.0°C5 Sep 1998	-7.8°C27 Sep 1996	27 mm17 Sep 2007	129 mm1985 · driest 10 mm in 2019	46
October	25.6°C1 Oct 2010	-20.6°C27 Oct 2020	38 mm29 Oct 2023	139 mm1984 · driest 6 mm in 1988	45
November	21.1°C15 Nov 1999	-25.0°C25 Nov 2010	46 mm9 Nov 1988	128 mm1983 · driest 4 mm in 1986	45
December	16.7°C4 Dec 2017	-30.6°C18 Dec 1996	38 mm17 Dec 2016	134 mm2007 · driest 14 mm in 1991	44

Typical days per month at ASPEN 1SW, 1991–2020
Month	Days 25°C+	Days 30°C+	Frost nights	Heavy rain (10 mm+)	Snow days
January	0	0	30	1	12
February	0	0	28	2	11
March	0	0	29	2	9
April	0	0	24	2	8
May	1	0	11	2	3
June	10	<1	2	<1	<1
July	21	2	<1	1	0
August	15	<1	<1	<1	0
September	4	<1	4	1	<1
October	<1	0	19	2	4
November	0	0	28	2	8
December	0	0	30	1	11

How often, not how much — every day in ASPEN 1SW’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%	30%	3%	37%	-1.2–3.0°C
February	0%	35%	5%	50%	0.3–5.4°C
March	<1%	34%	7%	45%	5.4–9.5°C
April	4%	34%	7%	42%	8.6–13.8°C
May	31%	28%	5%	32%	13.6–19.1°C
June	71%	17%	3%	17%	20.2–24.7°C
July	69%	30%	4%	39%	23.8–27.2°C
August	68%	30%	3%	34%	23.1–25.7°C
September	54%	26%	4%	29%	19.0–22.2°C
October	15%	24%	5%	25%	11.4–16.3°C
November	<1%	28%	6%	35%	4.0–9.7°C
December	0%	31%	4%	38%	-0.5–3.0°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.

1981Each stripe is one year’s mean temperature against the 38-year average. Warmest: 2007. Coolest: 1982.2025

The evidence behind this page

Nearby, measured,
and named.

Place identity: GeoNames 5412230
NOAA station: USC00050372 · ASPEN 1SW
Station distance: 1.9 km from the place centre
Climate period: 1991–2020
Minimum month coverage: 28 usable years
Daylight: Calculated from latitude 39.19°, 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 ASPEN 1SW is what differs

Lenado→

Or put two places side by side: Aspen vs Lenado

Best time to visitAspen.