United States · 1991–2020

Best time to visit
Ruby.

July leads for comfortable weather in Ruby: typically 24.6°C by day, 4.1°C at night, with 50 mm of rain. Based on measured 1991–2020 NOAA station history.

Best comfortJuly

Typical high24.6°C

Typical low4.1°C

Rain in July50 mm

Comfort

July

July · August · June

72climate match

Beach

July

July · August · June

32climate match

Outdoors

June

June · September · August

78climate match

The weakest month is January, scoring 5 against July’s 72 — days reach only -3.2°C, 27° below the 24°C the score treats as ideal, and nights drop to -21.3°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

5-3.2° / -21.3°

Feb

5-1.2° / -18.9°

Mar

53.5° / -13.7°

Apr

58.1° / -7.1°

May

3514.6° / -2.1°

Jun

6521.4° / 0.9°

Jul

7224.6° / 4.1°

Aug

6923.1° / 3.6°

Sep

5019.2° / -0.4°

Oct

2112.6° / -5.6°

Nov

54.3° / -12.6°

Dec

5-2.7° / -20°

Monthly climate evidence for Ruby — daylight is calculated from latitude, everything else is measured
Month	Day	Night	Rain	Wet days	Daylight	Comfort	Coverage
January	-3.2°C	-21.3°C	69 mm	10.2	9 h 43	5	Strong coverage
February	-1.2°C	-18.9°C	65 mm	10.2	10 h 41	5	Strong coverage
March	3.5°C	-13.7°C	54 mm	8.9	11 h 50	5	Strong coverage
April	8.1°C	-7.1°C	51 mm	8.5	13 h 10	5	Strong coverage
May	14.6°C	-2.1°C	39 mm	6.6	14 h 16	35	Strong coverage
June	21.4°C	0.9°C	24 mm	4.4	14 h 52	65	Strong coverage
July	24.6°C	4.1°C	50 mm	8.3	14 h 38	72	Strong coverage
August	23.1°C	3.6°C	50 mm	9.3	13 h 41	69	Strong coverage
September	19.2°C	-0.4°C	49 mm	8.4	12 h 24	50	Strong coverage
October	12.6°C	-5.6°C	43 mm	6.7	11 h 07	21	Strong coverage
November	4.3°C	-12.6°C	51 mm	7.7	10 h	5	Strong coverage
December	-2.7°C	-20°C	58 mm	9.1	9 h 27	5	Strong coverage

What has changed

Ruby runs +0.4°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

-0.9

Feb

-1.3

Mar

-0.1

Apr

0.0

May

0.0

Jun

+2.0

Jul

+1.4

Aug

+1.1

Sep

+1.8

Oct

+0.2

Nov

+0.8

Dec

-0.6

July daytime highs, 2011–2025. Last recorded: 25.5°C.

Records at CRESTED BUTTE, 1910–2026
Month	Record high	Record low	Wettest day	Wettest / driest month	Years
January	12.2°C4 Jan 1927	-41.7°C13 Jan 1963	53 mm20 Jan 1930	282 mm1957 · driest 6 mm in 1934	113
February	11.1°C11 Feb 1961	-43.9°C6 Feb 1982	49 mm21 Feb 1996	206 mm1936 · driest 9 mm in 1925	115
March	21.1°C26 Mar 2026	-35.6°C3 Mar 2002	52 mm11 Mar 2023	203 mm1912 · driest 3 mm in 1939	116
April	22.2°C29 Apr 1943	-27.2°C2 Apr 1975	41 mm6 Apr 1911	132 mm1920 · driest 0 mm in 1939	115
May	26.7°C31 May 1956	-18.3°C2 May 1953	42 mm14 May 1925	122 mm1995 · driest 0 mm in 1932	115
June	31.7°C25 Jun 2012	-9.4°C20 Jun 1920	88 mm25 Jun 1943	179 mm1943 · driest 0 mm in 1924	115
July	31.7°C25 Jul 1936	-8.3°C5 Jul 1921	46 mm29 Jul 2018	140 mm1930 · driest 0 mm in 1924	115
August	32.8°C25 Aug 1936	-8.3°C23 Aug 1920	43 mm4 Aug 2000	144 mm1930 · driest 2 mm in 1979	115
September	30.6°C4 Sep 1936	-16.1°C21 Sep 1921	51 mm8 Sep 1918	373 mm1927 · driest 0 mm in 1943	114
October	25.6°C11 Oct 1922	-25.0°C31 Oct 2023	38 mm5 Oct 1911	124 mm1969 · driest 0 mm in 1952	114
November	20.6°C1 Nov 1915	-34.4°C3 Nov 1991	48 mm28 Nov 2004	106 mm1985 · driest 1 mm in 1923	115
December	15.6°C18 Dec 1917	-39.4°C8 Dec 2005	93 mm30 Dec 1951	320 mm1951 · driest 0 mm in 1930	115

Typical days per month at CRESTED BUTTE, 1991–2020
Month	Days 25°C+	Days 30°C+	Frost nights	Heavy rain (10 mm+)	Snow days
January	0	0	30	2	11
February	0	0	28	2	11
March	0	0	31	1	10
April	0	0	29	1	8
May	<1	0	25	<1	3
June	6	<1	13	<1	<1
July	17	<1	2	1	0
August	10	0	3	1	0
September	2	0	18	1	<1
October	0	0	28	1	4
November	0	0	30	2	8
December	0	0	30	1	11

The best month has moved. On the 1961–1990 numbers the strongest month here was July (scoring 78); on 2011–2025 it is August (78). Both are scored the same way, from the same station — only the climate underneath changed.

How often, not how much — every day in CRESTED BUTTE’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%	29%	7%	37%	-5.2–0.1°C
February	0%	32%	6%	39%	-3.1–2.4°C
March	<1%	29%	5%	34%	1.1–5.8°C
April	<1%	26%	4%	29%	5.7–11.5°C
May	16%	21%	3%	22%	12.4–17.8°C
June	64%	16%	3%	17%	18.7–24.0°C
July	70%	28%	4%	36%	22.7–26.4°C
August	66%	31%	4%	37%	21.5–25.3°C
September	46%	25%	5%	28%	17.2–21.7°C
October	10%	20%	4%	20%	10.7–17.1°C
November	<1%	22%	4%	26%	1.3–8.7°C
December	0%	27%	6%	33%	-4.1–2.9°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.

1911Each stripe is one year’s mean temperature against the 100-year average. Warmest: 1963. Coolest: 1920.2025

The evidence behind this page

Nearby, measured,
and named.

Place identity: GeoNames 5437120
NOAA station: USC00051959 · CRESTED BUTTE
Station distance: 10.3 km from the place centre
Climate period: 1991–2020
Minimum month coverage: 29 usable years
Daylight: Calculated from latitude 38.87°, 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 CRESTED BUTTE is what differs

Crested Butte→Baldwin→Floresta→Irwin→

Or put two places side by side: Ruby vs Crested Butte

Best time to visitRuby.

July

July

June

The whole year,without the guesswork.

Ruby runs +0.4°Con the 1961–1990 baseline.

Nearby, measured,and named.

Best time to visit
Ruby.

The whole year,
without the guesswork.

Ruby runs +0.4°C
on the 1961–1990 baseline.

Nearby, measured,
and named.