United States · 1991–2020

Best time to visit
Lone Tree.

September leads for comfortable weather in Lone Tree: typically 25.5°C by day, 9.4°C at night, with 32 mm of rain. Based on measured 1991–2020 NOAA station history.

Best comfortSeptember

Typical high25.5°C

Typical low9.4°C

Rain in September32 mm

Comfort

September

September · June · August

84climate match

Beach

August

August · July · June

72climate match

Outdoors

May

May · September · October

83climate match

The weakest month is January, scoring 5 against September’s 84 — days reach only 7.3°C, 17° below the 24°C the score treats as ideal, and nights drop to -7°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

57.3° / -7°

Feb

67.5° / -6.8°

Mar

2912.6° / -2.4°

Apr

4215.8° / 0.9°

May

6620.7° / 5.8°

Jun

7727.8° / 11.4°

Jul

7031.1° / 15.1°

Aug

7429.5° / 13.9°

Sep

8425.5° / 9.4°

Oct

5617.9° / 2.3°

Nov

2912.2° / -2.9°

Dec

56.7° / -7.6°

Monthly climate evidence for Lone Tree — daylight is calculated from latitude, everything else is measured
Month	Day	Night	Rain	Wet days	Daylight	Comfort	Coverage
January	7.3°C	-7°C	10 mm	2.6	9 h 39	5	Good coverage
February	7.5°C	-6.8°C	13 mm	3.5	10 h 39	6	Good coverage
March	12.6°C	-2.4°C	25 mm	4.8	11 h 49	29	Good coverage
April	15.8°C	0.9°C	48 mm	7.2	13 h 11	42	Good coverage
May	20.7°C	5.8°C	52 mm	7.2	14 h 20	66	Good coverage
June	27.8°C	11.4°C	47 mm	5.6	14 h 57	77	Good coverage
July	31.1°C	15.1°C	53 mm	7	14 h 42	70	Good coverage
August	29.5°C	13.9°C	55 mm	6.5	13 h 43	74	Good coverage
September	25.5°C	9.4°C	32 mm	4	12 h 24	84	Good coverage
October	17.9°C	2.3°C	25 mm	4.3	11 h 05	56	Good coverage
November	12.2°C	-2.9°C	13 mm	3.1	9 h 57	29	Good coverage
December	6.7°C	-7.6°C	9 mm	2.6	9 h 23	5	Good coverage

Records at DENVER CENTENNIAL AP, 1998–2026
Month	Record high	Record low	Wettest day	Wettest / driest month	Years
January	22.8°C27 Jan 2015	-24.3°C15 Jan 2024	11 mm21 Jan 2007	24 mm2007 · driest 1 mm in 2010	28
February	25.6°C10 Feb 2017	-27.1°C5 Feb 2014	34 mm3 Feb 2012	43 mm2012 · driest 0 mm in 2026	28
March	30.0°C25 Mar 2026	-22.8°C2 Mar 2002	52 mm23 Mar 2016	81 mm2024 · driest 0 mm in 2012	28
April	29.4°C24 Apr 2012	-16.6°C10 Apr 2013	57 mm24 Apr 2007	133 mm1999 · driest 0 mm in 2022	28
May	33.9°C29 May 2003	-8.8°C2 May 2013	85 mm11 May 2023	168 mm2023 · driest 16 mm in 2010	28
June	38.3°C28 Jun 2018	1.1°C8 Jun 2007	59 mm22 Jun 2023	228 mm2023 · driest 4 mm in 2001	28
July	38.3°C20 Jul 2005	8.9°C8 Jul 2024	47 mm4 Jul 2010	112 mm2006 · driest 6 mm in 2024	29
August	37.8°C1 Aug 2008	3.3°C26 Aug 2014	83 mm18 Aug 2004	138 mm2004 · driest 6 mm in 2020	28
September	36.7°C2 Sep 2019	-3.3°C29 Sep 1999	56 mm12 Sep 2013	178 mm2013 · driest 1 mm in 2010	28
October	30.6°C4 Oct 2024	-16.6°C27 Oct 2020	23 mm26 Oct 2006	63 mm2009 · driest 0 mm in 2003	28
November	26.7°C2 Nov 2025	-22.7°C13 Nov 2014	15 mm2 Nov 2011	43 mm2024 · driest 0 mm in 2021	28
December	24.4°C22 Dec 2025	-26.6°C22 Dec 2022	22 mm20 Dec 2006	54 mm2006 · driest 0 mm in 2018	28

Typical days per month at DENVER CENTENNIAL AP, 1991–2020
Month	Days 25°C+	Days 30°C+	Frost nights	Heavy rain (10 mm+)	Snow days
January	0	0	29	<1	2
February	0	0	26	<1	2
March	<1	0	22	<1	3
April	2	0	13	1	2
May	9	2	3	2	<1
June	23	12	0	2	0
July	29	22	0	2	0
August	28	17	0	1	0
September	19	7	<1	1	<1
October	6	0	10	<1	<1
November	<1	0	22	<1	2
December	0	0	30	<1	3

How often, not how much — every day in DENVER CENTENNIAL AP’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%	8%	<1%	<1%	4.0–9.5°C
February	3%	12%	<1%	6%	4.6–11.5°C
March	15%	15%	2%	11%	10.0–16.4°C
April	33%	22%	4%	25%	14.1–18.5°C
May	55%	24%	6%	25%	18.7–23.1°C
June	78%	19%	5%	17%	24.6–30.2°C
July	79%	21%	6%	24%	29.3–32.7°C
August	80%	20%	4%	15%	27.7–31.4°C
September	79%	14%	4%	9%	23.3–28.1°C
October	45%	13%	2%	7%	15.2–20.4°C
November	17%	10%	<1%	5%	9.4–15.3°C
December	2%	8%	<1%	3%	5.1–10.2°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.

1999Each stripe is one year’s mean temperature against the 27-year average. Warmest: 2024. Coolest: 2013.2025

The evidence behind this page

Nearby, measured,
and named.

Place identity: GeoNames 5429208
NOAA station: USW00093067 · DENVER CENTENNIAL AP
Station distance: 3.4 km from the place centre
Climate period: 1991–2020
Minimum month coverage: 22 usable years
Daylight: Calculated from latitude 39.55°, 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 DENVER CENTENNIAL AP is what differs

Centennial→Highlands Ranch→Southglenn→Castlewood→Dove Valley→Acres Green→

Or put two places side by side: Lone Tree vs Centennial

Best time to visitLone Tree.

September

August

May

The whole year,without the guesswork.

Nearby, measured,and named.

Best time to visit
Lone Tree.

The whole year,
without the guesswork.

Nearby, measured,
and named.