United States · 1991–2020

Best time to visit
Vernal.

September leads for comfortable weather in Vernal: typically 25.8°C by day, 8.6°C at night, with 31 mm of rain. Based on measured 1991–2020 NOAA station history.

Best comfortSeptember

Typical high25.8°C

Typical low8.6°C

Rain in September31 mm

Comfort

September

September · May · June

80climate match

Beach

August

August · June · July

72climate match

Outdoors

May

May · October · September

84climate match

The weakest month is January, scoring 5 against September’s 80 — days reach only 4°C, 20° below the 24°C the score treats as ideal, and nights drop to -8.5°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

54° / -8.5°

Feb

87.5° / -5.7°

Mar

3413.2° / -1.6°

Apr

5317.3° / 1.8°

May

7922.7° / 6.3°

Jun

7629.2° / 11°

Jul

7231.8° / 14.1°

Aug

7430.1° / 13.2°

Sep

8025.8° / 8.6°

Oct

5818.6° / 2.3°

Nov

2310.7° / -3.4°

Dec

54.1° / -8.4°

Monthly climate evidence for Vernal — daylight is calculated from latitude, everything else is measured
Month	Day	Night	Rain	Wet days	Daylight	Comfort	Coverage
January	4°C	-8.5°C	12 mm	3.2	9 h 46	5	Strong coverage
February	7.5°C	-5.7°C	12 mm	3.2	10 h 42	8	Strong coverage
March	13.2°C	-1.6°C	17 mm	4	11 h 50	34	Strong coverage
April	17.3°C	1.8°C	19 mm	4	13 h 08	53	Strong coverage
May	22.7°C	6.3°C	21 mm	4.2	14 h 14	79	Strong coverage
June	29.2°C	11°C	12 mm	2.5	14 h 49	76	Strong coverage
July	31.8°C	14.1°C	23 mm	4.2	14 h 36	72	Strong coverage
August	30.1°C	13.2°C	28 mm	5.7	13 h 39	74	Strong coverage
September	25.8°C	8.6°C	31 mm	5.4	12 h 23	80	Strong coverage
October	18.6°C	2.3°C	26 mm	4.8	11 h 08	58	Strong coverage
November	10.7°C	-3.4°C	16 mm	3.4	10 h 02	23	Strong coverage
December	4.1°C	-8.4°C	14 mm	3.5	9 h 30	5	Strong coverage

What has changed

Vernal runs +1.4°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

+1.3

Feb

+1.0

Mar

+2.0

Apr

+1.4

May

+0.8

Jun

+2.8

Jul

+1.5

Aug

+1.4

Sep

+2.1

Oct

+0.2

Nov

+1.6

Dec

+1.1

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

Records at MONTROSE #2, 1895–2026
Month	Record high	Record low	Wettest day	Wettest / driest month	Years
January	19.4°C30 Jan 1903	-31.7°C7 Jan 1913	35 mm14 Jan 1960	50 mm1974 · driest 0 mm in 2018	125
February	32.2°C27 Feb 1907	-32.8°C13 Feb 1905	38 mm11 Feb 1896	64 mm1896 · driest 0 mm in 1912	125
March	31.1°C22 Mar 2026	-20.6°C19 Mar 1906	38 mm30 Mar 1897	87 mm1897 · driest 0 mm in 1934	125
April	31.7°C30 Apr 1943	-16.7°C4 Apr 1945	34 mm19 Apr 1990	72 mm2004 · driest 0 mm in 1963	123
May	33.9°C30 May 2000	-8.3°C1 May 1909	28 mm24 May 1906	70 mm1928 · driest 0 mm in 1918	123
June	38.9°C19 Jun 1936	-2.8°C1 Jun 1919	27 mm21 Jun 1967	64 mm1947 · driest 0 mm in 1980	124
July	39.4°C9 Jul 2021	1.7°C1 Jul 1968	38 mm21 Jul 1983	76 mm1983 · driest 1 mm in 1958	124
August	41.1°C1 Aug 1947	2.8°C26 Aug 1910	33 mm22 Aug 1993	87 mm1943 · driest 1 mm in 2019	124
September	36.1°C6 Sep 2020	-6.1°C27 Sep 1908	38 mm6 Sep 1970	108 mm1938 · driest 0 mm in 1979	124
October	31.1°C2 Oct 2015	-15.0°C27 Oct 2020	43 mm20 Oct 1963	82 mm2006 · driest 0 mm in 1999	125
November	25.0°C2 Nov 2014	-22.2°C27 Nov 1952	39 mm1 Nov 1986	70 mm1986 · driest 0 mm in 2018	124
December	20.0°C11 Dec 1939	-29.4°C25 Dec 1924	22 mm4 Dec 1960	55 mm2007 · driest 0 mm in 1976	124

Typical days per month at MONTROSE #2, 1991–2020
Month	Days 25°C+	Days 30°C+	Frost nights	Heavy rain (10 mm+)	Snow days
January	0	0	30	<1	3
February	0	0	26	<1	2
March	<1	0	21	<1	1
April	2	0	11	<1	<1
May	13	2	2	<1	<1
June	26	16	0	<1	0
July	30	24	0	<1	0
August	29	18	0	<1	0
September	20	5	<1	<1	0
October	4	<1	9	<1	<1
November	0	0	24	<1	1
December	0	0	29	<1	3

The best month has moved. On the 1961–1990 numbers the strongest month here was September (scoring 83); on 2011–2025 it is May (82). Both are scored the same way, from the same station — only the climate underneath changed.

How often, not how much — every day in MONTROSE #2’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%	0.0–6.6°C
February	<1%	12%	<1%	6%	3.9–10.4°C
March	7%	13%	1%	9%	9.1–15.0°C
April	35%	14%	2%	10%	14.5–19.4°C
May	67%	14%	2%	12%	19.8–24.9°C
June	89%	9%	<1%	5%	26.1–31.4°C
July	85%	15%	2%	13%	29.4–33.3°C
August	81%	19%	2%	18%	28.2–31.6°C
September	78%	16%	2%	14%	23.6–27.9°C
October	45%	14%	2%	10%	16.4–21.4°C
November	3%	12%	1%	7%	7.4–13.2°C
December	0%	12%	<1%	7%	1.2–7.5°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.

1904Each stripe is one year’s mean temperature against the 118-year average. Warmest: 2018. Coolest: 1905.2024

The evidence behind this page

Nearby, measured,
and named.

Place identity: GeoNames 5442933
NOAA station: USC00055722 · MONTROSE #2
Station distance: 11.5 km from the place centre
Climate period: 1991–2020
Minimum month coverage: 29 usable years
Daylight: Calculated from latitude 38.39°, 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 MONTROSE #2 is what differs

Montrose→Fairview→Oak Grove→Uncompahgre→

Or put two places side by side: Vernal vs Montrose

Best time to visitVernal.

September

August

May

The whole year,without the guesswork.

Vernal runs +1.4°Con the 1961–1990 baseline.

Nearby, measured,and named.

Best time to visit
Vernal.

The whole year,
without the guesswork.

Vernal runs +1.4°C
on the 1961–1990 baseline.

Nearby, measured,
and named.