United States · 1991–2020

Best time to visit
Rainbow.

September leads for comfortable weather in Rainbow: typically 26.4°C by day, 7.9°C at night, with 32 mm of rain. Based on measured 1991–2020 NOAA station history.

Best comfortSeptember

Typical high26.4°C

Typical low7.9°C

Rain in September32 mm

Comfort

September

September · May · June

78climate match

Beach

June

June · July · August

70climate match

Outdoors

May

May · October · September

82climate match

The weakest month is January, scoring 5 against September’s 78 — days reach only -0.8°C, 25° below the 24°C the score treats as ideal, and nights drop to -14.8°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

5-0.8° / -14.8°

Feb

53.9° / -10.7°

Mar

2511.7° / -3.7°

Apr

4816.6° / 0.4°

May

7622.4° / 5.6°

Jun

7529.2° / 10.5°

Jul

6733.3° / 14.4°

Aug

7031.7° / 13.1°

Sep

7826.4° / 7.9°

Oct

5418.3° / 0.8°

Nov

118.8° / -6.1°

Dec

50.3° / -13.1°

Monthly climate evidence for Rainbow — daylight is calculated from latitude, everything else is measured
Month	Day	Night	Rain	Wet days	Daylight	Comfort	Coverage
January	-0.8°C	-14.8°C	16 mm	4	9 h 38	5	Strong coverage
February	3.9°C	-10.7°C	17 mm	4	10 h 38	5	Strong coverage
March	11.7°C	-3.7°C	21 mm	3.9	11 h 49	25	Strong coverage
April	16.6°C	0.4°C	27 mm	5.2	13 h 12	48	Strong coverage
May	22.4°C	5.6°C	30 mm	5.3	14 h 21	76	Strong coverage
June	29.2°C	10.5°C	18 mm	2.9	14 h 59	75	Strong coverage
July	33.3°C	14.4°C	18 mm	3.9	14 h 44	67	Strong coverage
August	31.7°C	13.1°C	24 mm	4.4	13 h 44	70	Strong coverage
September	26.4°C	7.9°C	32 mm	4.7	12 h 24	78	Strong coverage
October	18.3°C	0.8°C	32 mm	4.5	11 h 05	54	Strong coverage
November	8.8°C	-6.1°C	20 mm	3.6	9 h 55	11	Strong coverage
December	0.3°C	-13.1°C	16 mm	3.7	9 h 21	5	Strong coverage

What has changed

Rainbow runs +0.1°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

-1.0

Feb

-0.5

Mar

+0.7

Apr

-0.7

May

-0.8

Jun

+1.0

Jul

+0.5

Aug

+0.2

Sep

+1.2

Oct

-0.8

Nov

+0.9

Dec

+0.5

September daytime highs, 2011–2025. Last recorded: 26.0°C.

Records at RANGELY 1E, 1894–2026
Month	Record high	Record low	Wettest day	Wettest / driest month	Years
January	17.8°C21 Jan 1896	-38.3°C2 Jan 1952	25 mm16 Jan 1956	52 mm2023 · driest 0 mm in 1964	91
February	19.4°C25 Feb 1986	-38.3°C15 Feb 1895	29 mm16 Feb 1962	67 mm1962 · driest 0 mm in 1973	92
March	30.6°C26 Mar 2026	-27.2°C4 Mar 1966	39 mm29 Mar 1979	81 mm1979 · driest 0 mm in 1956	88
April	30.0°C24 Apr 2012	-21.1°C2 Apr 1975	24 mm19 Apr 1971	64 mm1999 · driest 0 mm in 1966	88
May	35.0°C19 May 1984	-13.3°C6 May 1975	34 mm12 May 2014	78 mm1995 · driest 0 mm in 1900	87
June	42.2°C21 Jun 1974	-3.9°C16 Jun 1907	51 mm10 Jun 1970	101 mm1998 · driest 0 mm in 1961	86
July	40.0°C22 Jul 2005	0.6°C4 Jul 1903	35 mm13 Jul 1964	68 mm1986 · driest 0 mm in 2003	85
August	41.1°C1 Aug 1900	-4.4°C30 Aug 1974	36 mm1 Aug 1953	82 mm1957 · driest 0 mm in 2020	85
September	36.7°C8 Sep 2022	-6.7°C13 Sep 1903	43 mm6 Sep 1894	116 mm1997 · driest 0 mm in 1956	86
October	30.6°C1 Oct 2010	-20.0°C30 Oct 2019	50 mm5 Oct 1911	111 mm1981 · driest 0 mm in 1958	89
November	23.3°C5 Nov 1978	-26.1°C20 Nov 1977	26 mm30 Nov 2007	54 mm2015 · driest 0 mm in 1901	90
December	16.7°C20 Dec 2025	-35.6°C20 Dec 1908	23 mm30 Dec 1951	55 mm2007 · driest 0 mm in 1976	90

Typical days per month at RANGELY 1E, 1991–2020
Month	Days 25°C+	Days 30°C+	Frost nights	Heavy rain (10 mm+)	Snow days
January	0	0	30	<1	4
February	0	0	28	<1	3
March	<1	0	27	<1	2
April	2	<1	14	<1	<1
May	12	2	2	<1	<1
June	24	16	0	<1	0
July	30	26	0	<1	0
August	29	23	0	<1	0
September	21	8	<1	1	0
October	4	<1	13	1	<1
November	0	0	28	<1	2
December	0	0	31	<1	4

The best month has moved. On the 1961–1990 numbers the strongest month here was May (scoring 78); on 2011–2025 it is September (77). Both are scored the same way, from the same station — only the climate underneath changed.

How often, not how much — every day in RANGELY 1E’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%	12%	<1%	6%	-5.5–4.0°C
February	0%	12%	1%	6%	-1.0–8.8°C
March	6%	12%	2%	7%	6.9–14.9°C
April	34%	15%	2%	11%	14.7–19.7°C
May	67%	16%	2%	14%	19.7–25.7°C
June	90%	9%	2%	6%	26.6–32.0°C
July	89%	11%	2%	8%	30.9–34.9°C
August	86%	14%	2%	10%	30.1–33.1°C
September	80%	15%	3%	13%	24.2–29.0°C
October	46%	13%	3%	10%	15.9–21.6°C
November	2%	11%	2%	6%	5.6–12.9°C
December	0%	11%	1%	7%	-3.7–5.1°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.

1895Each stripe is one year’s mean temperature against the 66-year average. Warmest: 2025. Coolest: 1908.2025

The evidence behind this page

Nearby, measured,
and named.

Place identity: GeoNames 5545406
NOAA station: USC00056832 · RANGELY 1E
Station distance: 44.5 km from the place centre
Climate period: 1991–2020
Minimum month coverage: 29 usable years
Daylight: Calculated from latitude 39.84°, 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 RANGELY 1E is what differs

Rangely→Dragon→Watson→

Or put two places side by side: Rainbow vs Rangely

Best time to visitRainbow.

September

June

May

The whole year,without the guesswork.

Rainbow runs +0.1°Con the 1961–1990 baseline.

Nearby, measured,and named.

Best time to visit
Rainbow.

The whole year,
without the guesswork.

Rainbow runs +0.1°C
on the 1961–1990 baseline.

Nearby, measured,
and named.